Recyclable pumping sealing device

Abstract

The invention relates to the technical field of logging engineering, in particular to a recyclable pumping sealing device which comprises a connector assembly, a detection assembly and a setting assembly which are sequentially installed together from top to bottom. The detection assembly can obtain the underground position of the detection assembly according to the change of the materials of the adjacent casing and casing coupling in the well. The horizontal well setting device is reasonable and compact in structure and convenient to use, pumping force is provided through fracturing fluid, horizontal well setting is achieved, the fracturing work requirement is met, the setting assembly is pumped to the underground target position, then the fracturing fluid acts on the setting assembly, then the target position is sealed, the joint assembly is lifted by a winch after the setting assembly is well sealed, and the fracturing work requirement is met. The joint assembly can be separated from the setting assembly, so that the joint assembly and the detection assembly can be recycled, the detection assembly can measure the number of sleeve joint hoops used for connecting two adjacent sleeves in a well, the depth of the detection assembly entering the oil well is determined, and the underground position of the detection assembly can be conveniently detected.

Description

Technical Field

[0001] The invention relates to the technical field of well logging engineering and relates to a recoverable pumping sealing device. Background Art

[0002] A typical wellbore model in unconventional oil and gas production is to drill a long horizontal section at the required vertical depth, then run the casing and fix the casing with cement. In the completion stage, the channel to the reservoir is mainly established through the perforation process, and the channel is opened by fracturing to increase the contact area between the channel and the reservoir to achieve the purpose of increasing production. A more common process is to use a technology called "bridge plug perforation", which requires setting a plug to isolate a specific area, and then perforating the designed position of the area to allow the reservoir in the area to be stimulated. At the end of the stimulation, the plug is usually worn off and the well fluid can flow back and produce.

[0003] During stimulation, it is valuable to measure the amount of fluid and sand injected into each perforation cluster in each stage during the fracturing process in real time. Several well-known measurement methods can determine the amount of fluid injected into each cluster, but until now, there has been no method that can monitor the amount of fluid injected into each cluster in real time during stimulation due to deployment difficulties.

[0004] During the fracturing construction process, it is necessary to maintain the communication and connection between the downhole sealing equipment and the ground equipment to achieve bridge plug sealing. In fact, the solid components in the liquid used for fracturing may be deposited on the top of the sealing equipment, hindering the recovery of the device, which will cause the downhole to be complicated and increase the difficulty of the entire construction. Summary of the invention

[0005] The present invention provides a recyclable pumping sealing device, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that during the existing fracturing construction process, it is necessary to maintain communication and connection between the downhole sealing equipment and the ground equipment, and the solid components in the liquid used for fracturing may be deposited on the top of the sealing device, hindering the recovery of the device.

[0006] The technical solution of the present invention is achieved by the following measures: a recyclable pumping sealing device, comprising a joint assembly, a detection assembly and a setting assembly which are sequentially installed together from top to bottom; The detection component can obtain the position of the detection component in the well according to the change of the material of the adjacent casing and casing collar in the well; The joint assembly can connect the detection assembly and the ground equipment together; The sealing assembly can seal the target position, and when recovered, it can be separated from the detection assembly and remain in the well to maintain the sealing state of the target position. At the same time, after the fracturing fluid acts on the sealing assembly, the sealing assembly can drive the detection assembly and the joint assembly to move in the horizontal well.

[0007] The following are further optimizations and / or improvements to the above technical solutions: The above-mentioned sealing assembly may include a ball seat, an articulated cylinder, a thrust cylinder, a valve core mechanism, a center shaft, a sealing ball, a straightening tail seat and a leather cup. The upper end of the ball seat and the lower end of the detection assembly are sealed and fixedly installed together. The inner side of the lower part of the ball seat is provided with a hinge groove opening downward. The upper end of the articulated cylinder is fixed with an articulated ball hingedly installed in the articulated groove. The inner side of the lower end of the articulated cylinder and the outer side of the upper end of the thrust cylinder are fixedly installed together. The outer side of the upper part of the articulated cylinder corresponding to the position above the thrust cylinder is evenly spaced along the circumference with a plurality of liquid inlet holes connected inside and outside. The inner side of the thrust cylinder is provided with an upper A flow passage passes through the bottom, a valve core mechanism capable of opening and closing the flow passage is arranged at the upper end of the thrust cylinder, a hollow central shaft is sleeved on the inner side of the lower part of the flow passage, a second elastic reset member is arranged between the upper part of the central shaft and the lower part of the thrust cylinder, the lower end of the central shaft and the upper part of the setting ball are fixedly mounted together, a plurality of liquid outlet holes connected inside and outside are evenly distributed along the circumference at the outer side of the lower part of the central shaft corresponding to the position above the setting ball, a straightening tail seat is sleeved on the outer side of the lower part of the central shaft corresponding to the position above the liquid outlet hole, and the upper end of the straightening tail seat and the lower end of the thrust cylinder are mounted together A guide ring stage is fixed on the outer side of the lower part of the center shaft corresponding to the position below the thrust cylinder. The outer side of the lower part of the guide ring stage presents a conical outer guide surface with a larger upper part and a smaller lower part. A guide ring groove is provided on the outer side of the upper part of the straightening tailstock corresponding to the position of the guide ring stage. A plurality of radially penetrating inner guide mounting holes are evenly distributed along the circumference in the middle of the guide ring groove. A buckle ring is fixedly installed in the guide ring groove. A radially penetrating outer guide mounting hole is provided on the outer side of the buckle ring corresponding to the position of each inner guide mounting hole. A wedge block is slidably installed in each inner guide mounting hole. Each wedge block A guide column passing through the outer guide mounting hole at the corresponding position is fixed on the outside. The inner side of the upper part of the wedge block is a conical surface matching the outer guide surface. A first elastic reset member is provided between the outer side of the wedge block and the inner side of the buckle, which can make the inner side of the wedge block abut against the outer side of the guide ring platform. A lower pressure cover is installed on the outer side of the buckle corresponding to the upper side of the guide column, and an upper pressure cover is installed on the outer side of the upper part of the thrust cylinder corresponding to the position below the hinge cylinder. A number of annular partitions are arranged between the upper and lower pressure covers, and leather cups are installed on the upper and lower sides of each partition.

[0008] The above-mentioned flow passage may include a first straight hole, a second straight hole, a third straight hole, a fourth straight hole and a fifth straight hole which are connected in sequence from top to bottom, the inner diameters of the first straight hole, the second straight hole and the third straight hole decrease in sequence, and the inner diameters of the third straight hole, the fourth straight hole and the fifth straight hole increase in sequence, a plurality of slots opening inwards are evenly spaced on the step surface between the second straight hole and the third straight hole, the valve core mechanism includes a valve cover, a valve stem and a third elastic reset member, the outer side of the lower part of the valve cover is fixedly installed in the first straight hole, and a switch hole which passes through from top to bottom is provided in the center of the upper end of the valve cover A T-shaped valve stem with a larger upper portion and a smaller lower portion is mounted on the inner side of the valve cover, and the outer side of the lower portion of the valve stem is mounted in the third straight hole. A third elastic reset member is provided between the step surface between the second straight hole and the third straight hole and the outer side of the upper portion of the valve stem, which enables the upper end of the valve stem to be in sealing contact with the inner side of the upper portion of the valve cover. A first step surface is provided on the inner side of the upper portion of the straightening tail seat corresponding to the upper end position of the guide ring platform, and a limiting ring platform is fixed on the outer side of the upper portion of the center axis corresponding to the position of the first step surface. The second elastic reset member is installed between the step surface between the fourth straight hole and the fifth straight hole and the upper end of the limiting ring platform.

[0009] The outer side of the lower part of the straightening tailstock corresponding to the position below the above-mentioned buckling ring may be evenly spaced along the circumference with a plurality of radially penetrating check holes, each of which is threaded with a clamping screw, a check pin is installed in the check hole corresponding to the position between the clamping screw and the outer side of the center shaft, a fourth elastic reset member is provided between the clamping screw and the check pin to enable the end of the check pin to abut against the outer side of the center shaft, and a check ring groove is provided on the outer side of the center shaft between the check hole and the lower end of the straightening tailstock.

[0010] The first filter screw is detachably fixedly installed in the above-mentioned liquid inlet hole, a fixing groove opening upward is provided on the upper part of the sealing ball, the outer side of the lower part of the central shaft is fixedly installed in the fixing groove, a second step surface is provided on the inner side of the lower part of the central shaft corresponding to the position above the liquid outlet hole, a second filter screw with the upper end in contact with the second step surface is fixedly installed on the inner side of the lower part of the central shaft, and a filtering channel connected to the inner side of the central shaft is provided on the outer side of the lower part of the second filter screw corresponding to each liquid outlet hole position.

[0011] The above-mentioned hinge groove may include a first hinge hole, a second hinge hole and a third hinge hole which are connected in sequence from top to bottom, the inner wall of the second hinge hole is spherical, the hinge ball is hingedly installed in the second hinge hole, and a locking nut is fixedly installed on the inner side of the lower part of the third hinge hole, and the locking nut is mounted on the outer side of the upper part of the Y-shaped hinge tube with an inverted cross-section, an annular gasket is mounted on the inner side of the lower part of the first hinge hole, and a fifth elastic reset part is installed on the inner side of the upper part of the first hinge hole so that the inner side of the lower end of the annular gasket is abutted against the upper part of the hinge ball.

[0012] The above-mentioned detection component may include an outer tube, an upper magnetic steel, a lower magnetic steel, a coil assembly, a first connecting cable and a second connecting cable. The outer side of the upper end of the ball seat and the inner side of the lower end of the outer tube are sealed and fixed together, the upper end of the outer tube and the lower end of the joint assembly are sealed and fixed together, a hollow upper connecting rod is sleeved on the inner side of the upper end of the outer tube, an upper buffer sleeve is installed between the upper end of the upper connecting rod and the lower end of the joint assembly, an upper fixed ring platform is fixedly installed on the outer side of the upper part of the upper connecting rod, a coil sleeve is fixedly installed on the outer side of the lower part of the upper connecting rod, a coil ring groove is provided on the outer side of the middle part of the coil sleeve, sealing members are provided between the outer side of the coil sleeve and the inner side of the outer tube at the positions above and below the coil ring groove, a threading hole connected to the inner side of the coil sleeve is provided on the upper part of the coil ring groove, and a coil is installed in the coil ring groove. An assembly, an annular upper magnetic steel is installed on the outer side of the upper connecting rod corresponding to the position between the upper end of the coil sleeve and the lower end of the upper fixed ring platform, a lower connecting rod is fixedly installed on the inner side of the lower part of the coil sleeve, a lower buffer sleeve is provided between the lower end of the lower connecting rod and the upper end of the ball seat, a lower fixed ring platform is fixedly installed on the outer side of the lower part of the lower connecting rod, an annular lower magnetic steel is installed on the outer side of the lower connecting rod corresponding to the position between the lower end of the coil sleeve and the upper end of the lower fixed ring platform, the upper end of the lower magnetic steel and the lower end of the upper magnetic steel are both N poles, a welding piece is fixed on the outer side of the upper end of the upper fixed ring platform, the lower end of the joint assembly and one end of the coil assembly are electrically connected together through a first connecting cable that is sealed and penetrated through the interior of the upper connecting rod and the threading hole, and the other end of the coil assembly and the welding piece are electrically connected together through a second connecting cable.

[0013] The upper end of the coil sleeve may be provided with an upper mounting groove opening upward, the lower part of the upper magnetic steel is sleeved in the upper mounting groove, a plurality of vertically penetrating mounting slots are provided at intervals along the circumference on the outer side of the upper fixed ring platform, each of the slots is fixedly provided with an upper spring sheet whose inner side of the lower end abuts against the outer side of the upper part of the upper magnetic steel, the middle part of each upper spring sheet protrudes outward and abuts against the inner side of the outer tube, the lower end of the coil sleeve is provided with a lower mounting groove opening downward, the upper part of the lower magnetic steel is sleeved in the lower mounting groove.

[0014] A first insulating sleeve can be fixedly installed on the inner side of the upper end of the upper connecting rod, a wiring terminal can be fixedly installed on the inner side of the first insulating sleeve, the lower end of the wiring terminal is fixedly connected to the upper end of the first connecting cable, and the upper end of the wiring terminal is in contact with the connector assembly.

[0015] The above-mentioned connector assembly may include a salvaging head, a middle connector, a second insulating sleeve, a pin, a jack seat and a contact. The outer side of the lower end of the middle connector is sealed and fixedly installed on the inner side of the upper end of the outer tube. The upper end of the middle connector and the lower end of the salvaging head of the hollow structure are fixedly installed together. The pin is sealed and fixedly installed on the inner side of the upper part of the middle connector. The second insulating sleeve is fixedly installed on the inner side of the lower part of the middle connector corresponding to the position below the pin. The jack seat is installed on the inner side of the upper part of the second insulating sleeve. The inner side of the upper end of the jack seat and the outer side of the lower end of the pin are tightly fitted together. The contact is installed on the inner side of the lower part of the second insulating sleeve. A sixth elastic reset member is provided between the lower end of the jack seat and the contact, which can make the lower end of the contact and the upper end of the terminal abut against each other.

[0016] The above-mentioned joint assembly may also include a gland sleeve, a sealing socket, a third connecting cable, a fourth connecting cable, a locking mechanism and a straightening spring sheet. An outer ring groove is provided on the outer side of the upper part of the middle joint, and a connecting sleeve arranged in half is mounted in the outer ring groove. The outer side of the upper part of the connecting sleeve and the inner side of the lower end of the salvaging head are fixedly installed together. A gland is fixedly installed on the inner side of the upper part of the middle joint, and a sealing socket is mounted in the gland sleeve, which is tightly mounted on the inner side of the lower part and the outer side of the upper part of the pin. A wiring sleeve is mounted on the inner side of the middle part of the salvaging head, and the lower end of the wiring sleeve and the sealing socket are connected through the third connecting cable. A cable sleeve is fixedly installed on the upper end of the wiring sleeve, and a fourth connecting cable is fixedly installed on the upper end of the cable sleeve. The upper end of the fourth connecting cable is located above the salvaging head after passing through the salvaging head, and a locking mechanism capable of fixing the fourth connecting cable is installed on the inner side of the upper part of the salvaging head. The outer side of the salvage head is provided with an upper righting groove and a lower righting groove at intervals above and below, an upper sliding sleeve is mounted on the outer side of the upper part of the salvage head corresponding to the position of the upper righting groove, and a plurality of upper sliding blocks that can move up and down in the upper righting groove are fixedly installed on the inner side of the upper sliding sleeve along the circumference, an upper telescopic groove with an opening downward is formed between the outer side of the lower part of each upper sliding block and the inner side of the upper sliding sleeve, a lower sliding sleeve is mounted on the outer side of the lower part of the salvage head corresponding to the position of the lower righting groove, and a lower sliding block that can move up and down in the lower righting groove is fixedly installed on the inner side of the lower sliding sleeve corresponding to the position of each upper sliding block, a lower telescopic groove with an opening upward is formed between the outer side of the upper part of each lower sliding block and the inner side of the lower sliding sleeve, a righting spring is inserted in each upper telescopic groove, the lower end of each righting spring is inserted in the lower telescopic groove at the corresponding position, and the middle part of each righting spring is arched outward.

[0017] The locking mechanism may include a first cone sleeve, a second cone sleeve, a third cone sleeve, a locking sleeve and a compression sleeve. A threaded sleeve is fixedly installed on the inner side of the upper part of the salvage head. The outer side of the lower end of the threaded sleeve and the inner side of the upper end of the first cone sleeve are fixedly installed together. A plurality of anti-rotation grooves are evenly distributed along the circumference on the outer side of the middle of the first cone sleeve. Corresponding to the position of each anti-rotation groove, an anti-rotation screw hole connected inside and outside is provided on the outer side of the upper part of the salvage head. An anti-rotation screw whose end is located in the anti-rotation groove at the corresponding position is screwed in each anti-rotation screw hole. The inner side of the lower part of the first cone sleeve presents a conical surface with a small top and a large bottom. A second cone sleeve is mounted on the inner side of the lower part of the sleeve, and the outer side and inner side of the second cone sleeve are both conical surfaces matching the inner side of the first cone sleeve; a third cone sleeve is mounted on the inner side of the second cone sleeve, and the outer side of the third cone sleeve is a conical surface matching the inner side of the second cone sleeve; fixing parts whose upper ends are fixed to corresponding positions on the outer side of the fourth connecting cable are provided between the outer side of the second cone sleeve and the inner side of the first cone sleeve, and between the inner side of the second cone sleeve and the outer side of the third cone sleeve; a locking sleeve is fixedly installed on the outer side of the lower end of the first cone sleeve, and a compression sleeve whose upper end abuts against the lower end of the third cone sleeve is installed on the inner side of the lower part of the locking sleeve.

[0018] A fifth connecting cable may be fixedly connected between the lower end of the locking sleeve and the upper end of the middle joint.

[0019] An insulating layer may be provided between the outer side of the upper part of the third connecting cable and the outer side of the lower part of the fourth connecting cable, a wear-resistant base is provided on the inner side of the middle part of the righting spring sheet, a U-shaped wear-resistant block with an inward-opening cross-section is fixedly installed on the outer side of the wear-resistant base, a fixing hole is formed on the inner side of the wear-resistant block and the outer side of the wear-resistant base, and the outer side of the middle part of the righting spring sheet is fixedly installed in the fixing hole.

[0020] The invention has a reasonable and compact structure and is easy to use. The pumping force is provided by the fracturing fluid to achieve horizontal well sealing and meet the needs of fracturing work. The sealing assembly is pumped to the target position downhole, and then the target position is sealed after the fracturing fluid acts on the sealing assembly. After the sealing is complete, the joint assembly is lifted by the winch to achieve mutual separation from the sealing assembly, thereby recovering the joint assembly and the detection assembly. The detection assembly can measure the number of casing hoops used to connect two adjacent casings in the well, thereby determining the depth of the detection assembly lowered into the oil well, which is convenient for detecting the position of the detection assembly downhole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a schematic diagram of the main cross-sectional structure of the upper part of the first embodiment.

[0022] Attached Figure 2 It is a schematic diagram of the main cross-sectional structure of the middle part of the first embodiment.

[0023] Attached Figure 3 It is a schematic diagram of the main cross-sectional structure of the lower part of the embodiment.

[0024] Attached Figure 4 For attachment Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0025] Attached Figure 5 For attachment Figure 1 Schematic diagram of the enlarged cross-sectional structure of the righting spring at BB.

[0026] Attached Figure 6 For attachment Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0027] Attached Figure 7 For attachment Figure 2 Schematic diagram of the enlarged structure at D in the middle.

[0028] Attached Figure 8 For attachment Figure 3 Schematic diagram of the enlarged structure at E in the middle.

[0029] Attached Fig. 9 For attachment Figure 3 Schematic diagram of the enlarged structure at F in the middle.

[0030] Attached Fig.10 This is a connection block diagram of the coil assembly in Example 7.

[0031] The codes in the attached drawings are: 1 is a ball seat, 2 is an articulated cylinder, 3 is a thrust cylinder, 4 is a central axis, 5 is a sealing ball, 6 is a tail seat, 7 is a leather cup, 8 is a guide ring, 9 is an outer guide surface, 10 is a buckle, 11 is a wedge block, 12 is a guide column, 13 is a first elastic reset member, 14 is an articulated ball, 15 is a second elastic reset member, 16 is a liquid outlet, 17 is a lower pressure cover, 18 is an upper pressure cover, 19 is a partition, 20 is a first straight hole, 21 is a second straight hole, 22 is a third straight hole, 23 is a fourth straight hole, 24 is the fifth straight hole, 25 is the slot, 26 is the valve cover, 27 is the valve stem, 28 is the third elastic reset member, 29 is the limit ring platform, 30 is the switch hole, 31 is the clamping screw, 32 is the stop pin, 33 is the fourth elastic reset member, 34 is the stop ring groove, 35 is the first filter screw, 36 is the second filter screw, 37 is the filter channel, 38 is the annular gasket, 39 is the locking nut, 40 is the fifth elastic reset member, 41 is the outer tube, 42 is the upper magnetic steel, 43 is the lower magnetic steel, 44 is the coil assembly, 45 is the first a connecting cable, 46 is a second connecting cable, 47 is an upper connecting rod, 48 is an upper buffer sleeve, 49 is an upper fixing ring, 50 is a coil sleeve, 51 is a sealing member, 52 is a lower connecting rod, 53 is a lower buffer sleeve, 54 is a lower fixing ring, 55 is a welding piece, 56 is an upper spring sheet, 57 is a first insulating sleeve, 58 is a terminal, 59 is a middle joint, 60 is a second insulating sleeve, 61 is a pin, 62 is a socket seat, 63 is a contact, 64 is a sixth elastic reset member, 65 is a gland sleeve, 66 is a sealing socket, 67 is a sealing socket, 68 is a sealing socket, 69 is a sealing socket, 70 is a sealing socket, 71 is a sealing socket, 72 is a sealing socket, 73 is a sealing socket, 74 is a sealing socket, 75 is a sealing socket, 76 is a sealing socket, 77 is a sealing socket, 78 is a sealing socket, 79 is a sealing socket, 80 is a sealing socket, 81 is a sealing socket, 82 is a sealing socket, 83 is a sealing socket, 84 is a sealing socket, 85 is a sealing socket, 86 is a sealing socket, 87 is a sealing socket, 88 is a sealing socket, 89 is a sealing socket, 90 is a sealing socket, 91 is a sealing socket, 92 is a sealing socket, 93 is a sealing socket, 94 is a sealing socket, 95 is a sealing socket, 96 is a sealing socket, 97 is a sealing socket, 98 is a sealing socket, 99 is a sealing socket, 91 is a sealing socket, 99 is a sealing socket, 91 is a sealing socket, 91 is a sealing socket, 91 is a sealing socket, 92 is a sealing socket, 93 is a sealing socket, 94 is a sealing socket, 9 is the third connecting cable, 68 is the fourth connecting cable, 69 is the straightening spring clip, 70 is the connecting sleeve, 71 is the wiring sleeve, 72 is the cable sleeve, 73 is the upper sliding sleeve, 74 is the upper slider, 75 is the lower sliding sleeve, 76 is the lower slider, 77 is the salvage head, 78 is the first cone sleeve, 79 is the second cone sleeve, 80 is the third cone sleeve, 81 is the locking sleeve, 82 is the pressing sleeve, 83 is the threaded sleeve, 84 is the anti-rotation screw, 85 is the fixing part, 86 is the fifth connecting cable, 87 is the insulating layer, 88 is the wear-resistant base, and 89 is the wear-resistant block. DETAILED DESCRIPTION

[0032] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0033] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0034] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As shown in the attached Figures 1 to 3As shown, the recyclable pumping sealing device includes a joint assembly, a detection assembly and a setting assembly which are sequentially installed together from top to bottom; The detection component can obtain the position of the detection component in the well according to the change of the material of the adjacent casing and casing collar in the well; The joint assembly can connect the detection assembly and the ground equipment together; The sealing assembly can seal the target position, and when recovered, it can be separated from the detection assembly and remain in the well to maintain the sealing state of the target position. At the same time, after the fracturing fluid acts on the sealing assembly, the sealing assembly can drive the detection assembly and the joint assembly to move in the horizontal well.

[0035] During use, the fracturing fluid provides pumping force to achieve horizontal well sealing to meet the needs of fracturing work, and the sealing assembly is pumped to the target position downhole, and then the fracturing fluid acts on the sealing assembly to seal the target position. After the seal is complete, the drawworks lifts the joint assembly to achieve separation from the sealing assembly, thereby recovering the joint assembly and the detection assembly. Since the two adjacent casings are connected by a casing coupling, the materials of the casing and the casing coupling are different, and the detection assembly can measure the number of casing hoops used to connect the two adjacent casings in the well, thereby determining the depth of the detection assembly lowered into the oil well, which is convenient for detecting the position of the detection assembly downhole. The present invention has a reasonable and compact structure, is easy to use, and has the characteristics of safety, simplicity and high efficiency.

[0036] The above-mentioned recyclable pumping seal device can be further optimized and / or improved according to actual needs: Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 2 , 3As shown in Figures 7 and 9, the sealing assembly includes a ball seat 1, an articulated cylinder 2, a thrust cylinder 3, a valve core mechanism, a center shaft 4, a sealing ball 5, a straightening tail seat 6 and a leather cup 7. The upper end of the ball seat 1 and the lower end of the detection assembly are sealed and fixed together. The inner side of the lower part of the ball seat 1 is provided with a hinge groove opening downward. The upper end of the articulated cylinder 2 is fixed with an articulated ball 14 hingedly installed in the articulated groove. The inner side of the lower end of the articulated cylinder 2 and the outer side of the upper end of the thrust cylinder 3 are fixed together. The outer side of the upper part of the articulated cylinder 2 corresponding to the position above the thrust cylinder 3 is evenly spaced along the circumference with a plurality of liquid inlet holes connected inside and outside. The inner side of the thrust cylinder 3 is provided with an upper A flow passage passes through the bottom, a valve core mechanism capable of opening and closing the flow passage is provided at the upper end of the thrust cylinder 3, a hollow central shaft 4 is sleeved on the inner side of the lower part of the flow passage, a second elastic reset member 15 is provided between the upper part of the central shaft 4 and the lower part of the thrust cylinder 3, the lower end of the central shaft 4 and the upper part of the sealing ball 5 are fixedly installed together, a plurality of liquid outlet holes 16 connected inside and outside are evenly distributed along the circumference at intervals on the outer side of the lower part of the central shaft 4 corresponding to the position above the sealing ball 5, a straightening tailstock 6 is sleeved on the outer side of the lower part of the central shaft 4 corresponding to the position above the liquid outlet hole 16, the upper end of the straightening tailstock 6 and the lower end of the thrust cylinder 3 are installed together, corresponding to the thrust cylinder 3. A guide ring platform 8 is fixed to the outer side of the lower part of the central shaft 4 at the position below the force cylinder 3. The outer side of the lower part of the guide ring platform 8 is a conical outer guide surface 9 with a larger upper part and a smaller lower part. A guide ring groove is provided on the outer side of the upper part of the straightening tailstock 6 corresponding to the position of the guide ring platform 8. A plurality of radially penetrating inner guide mounting holes are evenly spaced along the circumference in the middle of the guide ring groove. A buckle ring 10 is fixedly installed in the guide ring groove. A radially penetrating outer guide mounting hole is provided on the outer side of the buckle ring 10 corresponding to each inner guide mounting hole position. A wedge block 11 is slidably installed in each inner guide mounting hole. A wedge block 11 is fixed on the outer side of each wedge block 11 through the corresponding position. A guide column 12 is arranged in the outer guide mounting hole, the inner side of the upper part of the wedge block 11 is a conical surface matching the outer guide surface 9, and a first elastic reset member 13 is arranged between the outer side of the wedge block 11 and the inner side of the buckle 10, which can make the inner side of the wedge block 11 abut against the outer side of the guide ring platform 8, a lower pressure cover 17 is installed on the outer side of the buckle 10 corresponding to the upper side of the guide column 12, and an upper pressure cover 18 is installed on the outer side of the upper part of the thrust cylinder 3 corresponding to the position below the hinge cylinder 2, and a plurality of annular partitions 19 are arranged between the upper and lower pressure covers 18 and the lower pressure cover 17, and each partition 19 is installed with leather cups 7 on both sides.

[0037] According to the requirements, the inner side of the lower end of the lower gland 17 and the upper side of the guide column 12 are both provided with chamfered structures. During use, through such a setting, when the sealing assembly is located in the horizontal well, the high-pressure fracturing fluid acts on the leather cup 7 and starts to push the leather cup 7 to move. The leather cup 7 acts on the lower gland 17 and the guide column 12, so that the thrust cylinder 3, the central axis 4, the straightening tail seat 6 and the sealing ball 5 move along the horizontal well as a whole, which can drive the detection assembly to move in the horizontal well. The pressurized fracturing fluid pushes the leather cup 7 to move to the target position, and the pressure continues to increase. After the leather cup 7 is squeezed and expanded, it seals the target position, and then the connecting assembly is lifted, and the thrust cylinder 3 and the straightening tail seat 6 are separated from each other, so that the leather cup 7 is separated from the detection assembly during recovery and remains in the well to maintain the sealing state of the target position.

[0038] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 3 , 8 As shown, the flow passage includes a first straight hole 20, a second straight hole 21, a third straight hole 22, a fourth straight hole 23 and a fifth straight hole 24 which are connected in sequence from top to bottom. The inner diameters of the first straight hole 20, the second straight hole 21 and the third straight hole 22 decrease in sequence, and the inner diameters of the third straight hole 22, the fourth straight hole 23 and the fifth straight hole 24 increase in sequence. A plurality of slots 25 opening inward are evenly spaced on the step surface between the second straight hole 21 and the third straight hole 22. The valve core mechanism includes a valve cover 26, a valve stem 27 and a third elastic reset member 28. The outer side of the lower part of the valve cover 26 is fixedly installed in the first straight hole 20. The center of the upper end of the valve cover 26 is provided with an opening which passes through from top to bottom. The closing hole 30 is provided, and a T-shaped valve stem 27 with a larger upper portion and a smaller lower portion is provided on the inner side of the valve cover 26. The outer side of the lower portion of the valve stem 27 is provided in the third straight hole 22. A third elastic reset member 28 is provided between the step surface between the second straight hole 21 and the third straight hole 22 and the outer side of the upper portion of the valve stem 27, which enables the upper end of the valve stem 27 to be in sealing contact with the inner side of the upper portion of the valve cover 26. A first step surface is provided on the inner side of the upper portion of the straightening tail seat 6 corresponding to the upper end position of the guide ring platform 8. A limiting ring platform 29 is fixed on the outer side of the upper portion of the center axis 4 corresponding to the position of the first step surface. The second elastic reset member 15 is installed between the step surface between the fourth straight hole 23 and the fifth straight hole 24 and the upper end of the limiting ring platform 29.

[0039] According to the requirements, the upper end of the valve stem 27 and the inner side of the upper part of the valve cover 26 are both tapered with a small top and a large bottom. A sealing ring is installed on the upper end of the valve stem 27, and the third elastic reset member 28 is an existing well-known technology, such as a compression spring. During use, through such an arrangement, when the sealing assembly is located in a horizontal well, the high-pressure fracturing fluid acts on the leather cup 7 and begins to push the leather cup 7 to move. Due to the second elastic reset member 15, the guide ring 8 and the wedge block 11 are abutted against each other, so that the guide column 12 is extended, so that the leather cup 7 acts on the lower pressure cover 17 and the guide column 12, so that the thrust cylinder 3, the center axis 4, the straightening tail seat 6 and the sealing ball 5 move as a whole along the horizontal well. If the pressure is too large, the fracturing fluid enters the inner side of the thrust cylinder 3 from the liquid inlet hole, and then acts on the upper end of the valve stem 27 through the switch hole 30. The valve stem 27 compresses the third elastic reset member 28 downward and enters the flow channel in the thrust cylinder 3, and then flows into the third straight hole 22 through the slot 25, and finally flows out of the liquid outlet 16 to release the pressure.

[0040] When the sealing ball 5 reaches the sealing position, it is blocked and no longer moves. At this time, the central axis 4 and the straightening tailstock 6 approach each other and squeeze the second elastic reset member 15. The liquid outlet 16 is blocked by the inner wall of the straightening tailstock 6. The wedge block 11 moves inward under the action of the first elastic reset member 13. At the same time, the guide column 12 retracts into the straightening tailstock 6. At this time, the pressurized fracturing fluid pushes the leather cup 7 to move to the target position and continues to increase the pressure. The leather cup 7 is squeezed and expanded to seal the target position. When the connecting assembly is lifted, the thrust cylinder 3 and the straightening tailstock 6 are separated from each other, so that the leather cup 7 and the sealing ball 5 are separated from the detection assembly during recovery and remain in the well to maintain a sealed state at the target position.

[0041] Embodiment 4: As an optimization of the above embodiment, as shown in the attached Figure 3 , 9 As shown, a plurality of radially penetrating check holes are evenly distributed along the circumference on the outer side of the lower part of the straightening tailstock 6 corresponding to the position below the retaining ring 10, and a clamping screw 31 is threaded in each check hole, and a check pin 32 is installed in the check hole corresponding to the position between the clamping screw 31 and the outer side of the center shaft 4, and a fourth elastic reset member 33 is provided between the clamping screw 31 and the check pin 32 so that the end of the check pin 32 abuts against the outer side of the center shaft 4, and a check ring groove 34 is provided on the outer side of the center shaft 4 between the check hole and the lower end of the straightening tailstock 6.

[0042] During use, such an arrangement can prevent the fourth elastic reset component 33 from failing after the center shaft 4 moves upward for too long, thereby ensuring the reliability of the center shaft 4 and the sealing ball 5 during use. According to needs, a safety groove is provided on the outer side of the center shaft 4 below the check ring groove 34, and a safety hole connected inside and outside is provided on the outer side of the lower part of the straightening tailstock 6 corresponding to the position of the safety groove. A safety pin with its end located in the safety groove is fixedly installed in the safety hole, so as to prevent malfunction caused by the up and down movement of the center shaft 4 during transportation. The fourth elastic reset component 33 is an existing well-known compression spring.

[0043] Embodiment 5: As an optimization of the above embodiment, as shown in the attached Figure 3 , 8 As shown, a first filter screw 35 is detachably fixedly installed in the liquid inlet hole, a fixing groove opening upward is provided on the upper part of the sealing ball 5, the outer side of the lower part of the central axis 4 is fixedly installed in the fixing groove, a second step surface is provided on the inner side of the lower part of the central axis 4 corresponding to the position above the liquid outlet hole 16, a second filter screw 36 whose upper end contacts the second step surface is fixedly installed on the inner side of the lower part of the central axis 4, and a filtering channel 37 connected to the inner side of the central axis 4 is provided on the outer side of the lower part of the second filter screw 36 corresponding to the position of each liquid outlet hole 16.

[0044] According to the requirements, the first filter screw 35 and the second filter screw 36 are both of the prior art and are hollow screws with a filter fixed inside the middle. During use, such a setting can prevent impurities in the well from entering the central shaft 4, the thrust cylinder 3 and the valve core mechanism, causing abnormal movements of the central shaft 4 and the valve core mechanism, thereby affecting the setting operation.

[0045] Embodiment 6: As an optimization of the above embodiment, as shown in the attached Figure 2 , 3 As shown in Figures 7 and 8, the hinge groove includes a first hinge hole, a second hinge hole and a third hinge hole which are connected in sequence from top to bottom. The inner wall of the second hinge hole is spherical, and the hinge ball 14 is hingedly installed in the second hinge hole. A locking nut 39 is fixedly installed on the inner side of the lower part of the third hinge hole. The locking nut 39 is mounted on the outer side of the upper part of the Y-shaped hinge tube 2 with an inverted cross-section. An annular gasket 38 is mounted on the inner side of the lower part of the first hinge hole, and a fifth elastic reset member 40 is installed on the inner side of the upper part of the first hinge hole so that the inner side of the lower end of the annular gasket 38 abuts against the upper part of the hinge ball 14.

[0046] According to the requirements, a positioning hole connected to the third hinge hole is provided on the outer side of the lower part of the ball seat 1, and a positioning groove is provided on the outer side of the locking nut 39 corresponding to the position of the positioning hole. A positioning pin with the end located in the positioning groove is installed in the positioning hole, so that the locking nut 39 can be prevented from loosening during use, so that the hinge ball 14 and the ball seat 1 can be separated from each other. An oil filling hole connected inside and outside is provided on the outer side of the ball seat 1 corresponding to the position of the first hinge hole, and an oil filling plug is sealed and screwed in the oil filling hole. Through such a setting, it is convenient to fill grease into the hinge groove, reducing the wear between the hinge ball 14 and the ball seat 1. The fifth elastic reset member 40 is an existing well-known technology, such as a top-to-top wave spring. During use, by setting the locking nut 39, the disassembly and assembly between the hinge ball 14 and the ball seat 1 is facilitated, and the maintenance cost is reduced.

[0047] Embodiment 7: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown in , 6, and 10, the detection component includes an outer tube 41, an upper magnetic steel 42, a lower magnetic steel 43, a coil assembly 44, a first connecting cable 45 and a second connecting cable 46. The outer side of the upper end of the ball seat 1 and the inner side of the lower end of the outer tube 41 are sealed and fixed together, the upper end of the outer tube 41 and the lower end of the joint assembly are sealed and fixed together, the inner side of the upper end of the outer tube 41 is sleeved with a hollow upper connecting rod 47, an upper buffer sleeve 48 is installed between the upper end of the upper connecting rod 47 and the lower end of the joint assembly, an upper fixed ring platform 49 is fixedly installed on the outer side of the upper part of the upper connecting rod 47, a coil sleeve 50 is fixedly installed on the outer side of the lower part of the upper connecting rod 47, a coil ring groove is provided on the outer side of the middle part of the coil sleeve 50, a sealing member 51 is provided between the outer side of the coil sleeve 50 and the inner side of the outer tube 41 at the corresponding positions above and below the coil ring groove, a threading hole connected to the inner side of the coil sleeve 50 is provided on the upper part of the coil ring groove, and a coil assembly is installed in the coil ring groove. 44, an annular upper magnetic steel 42 is installed on the outer side of the upper connecting rod 47 corresponding to the position between the upper end of the coil sleeve 50 and the lower end of the upper fixed ring platform 49, a lower connecting rod 52 is fixedly installed on the inner side of the lower part of the coil sleeve 50, a lower buffer sleeve 53 is provided between the lower end of the lower connecting rod 52 and the upper end of the ball seat 1, a lower fixed ring platform 54 is fixedly installed on the outer side of the lower part of the lower connecting rod 52, an annular lower magnetic steel 43 is installed on the outer side of the lower connecting rod 52 corresponding to the position between the lower end of the coil sleeve 50 and the upper end of the lower fixed ring platform 54, the upper end of the lower magnetic steel 43 and the lower end of the upper magnetic steel 43 are both N poles, a welding piece 55 is fixed on the outer side of the upper end of the upper fixed ring platform 49, the lower end of the joint assembly and one end of the coil assembly 44 are electrically connected together through a first connecting cable 45 sealed and passed through the interior of the upper connecting rod 47 and the threading hole, and the other end of the coil assembly 44 and the welding piece 55 are electrically connected together through a second connecting cable 46.

[0048] According to the requirements, the seal 51 is a known seal ring. During use, through such a setting, when the coil assembly 44 passes through the adjacent casing and the casing coupling for connecting the two casings, the magnetic field of the upper magnetic steel 42 and the magnetic field of the lower magnetic steel 43 change, so that a potential difference is generated at both ends of the coil assembly 44, and a current is generated in the coil assembly 44, and then the signal is transmitted upward through the first connecting cable 45. The ground equipment can obtain the number of casings passed by the coil assembly 44 according to the number of changes in the current, and the depth of the coil assembly 44 in the well can be obtained by accumulating the length of the casing passed. The lower end of the joint assembly and one end of the coil assembly 44 are electrically connected together through the first connecting cable 45 that is sealed and penetrated inside the upper connecting rod 47 and the threading hole, and the other end of the coil assembly 44 and the welding piece 55 are electrically connected together through the second connecting cable 46, so that the connection of the coil can form a loop.

[0049] Embodiment 8: As an optimization of the above embodiment, as shown in the attached Figure 2 , 6 As shown, the upper end of the coil sleeve 50 is provided with an upper mounting groove opening upward, and the lower part of the upper magnetic steel 42 is sleeved in the upper mounting groove. The outer side of the upper fixed ring platform 49 is provided with a plurality of vertically penetrating mounting slots at intervals along the circumference. An upper spring piece 56 is fixedly installed in each slot, and the inner side of the lower end abuts against the outer side of the upper part of the upper magnetic steel 42. The middle part of each upper spring piece 56 protrudes outward and abuts against the inner side of the outer tube 41. The lower end of the coil sleeve 50 is provided with a lower mounting groove opening downward, and the upper part of the lower magnetic steel 43 is sleeved in the lower mounting groove.

[0050] During use, such a setting can limit the upper magnetic steel 42 and the lower magnetic steel 43, thereby preventing the upper magnetic steel 42 and the lower magnetic steel 43 from shaking during use and affecting the measurement results.

[0051] Embodiment 9: As an optimization of the above embodiment, as shown in the attached Figure 2 , 6 As shown in 10, a first insulating sleeve 57 is fixedly installed on the inner side of the upper end of the upper connecting rod 47, and a wiring terminal 58 is fixedly installed on the inner side of the first insulating sleeve 57. The lower end of the wiring terminal 58 is fixedly connected to the upper end of the first connecting cable 45, and the upper end of the wiring terminal 58 is in contact with the connector assembly.

[0052] During use, such a configuration can achieve reliable connection between the first connecting cable 45 and the wiring terminal 58, while improving the insulation performance at the connection between the first connecting cable 45 and the wiring terminal 58. According to needs, the existing well-known Corning RTV3140 glue can be poured outside the connection between the wiring terminal 58 and the first connecting cable 45 to further improve the insulation performance.

[0053] Embodiment 10: As an optimization of the above embodiment, as shown in the attached Figure 1 ,4 As shown in Figure 5, the connector assembly includes a salvage head 77, a middle connector 59, a second insulating sleeve 60, a pin 61, a jack seat 62 and a contact 63. The outer side of the lower end of the middle connector 59 is sealed and fixedly installed on the inner side of the upper end of the outer tube 41. The upper end of the middle connector 59 and the lower end of the salvage head 77 with a hollow structure are fixedly installed together. The pin 61 is sealed and fixedly installed on the inner side of the upper part of the middle connector 59. The second insulating sleeve 60 is fixedly installed on the inner side of the lower part of the middle connector 59 corresponding to the position below the pin 61. The jack seat 62 is installed on the inner side of the upper part of the second insulating sleeve 60. The inner side of the upper end of the jack seat 62 and the outer side of the lower end of the pin 61 are tightly fitted together. The contact 63 is installed on the inner side of the lower part of the second insulating sleeve 60. A sixth elastic reset member 64 is provided between the lower end of the jack seat 62 and the contact 63, which can make the lower end of the contact 63 and the upper end of the terminal 58 abut against each other.

[0054] According to the requirements, the sixth elastic reset member 64 is an existing well-known technology, such as a compression spring. The lower end surface of the contact 63 is spherical. The second insulating sleeve 60 includes a lower insulating sleeve and a large insulating sleeve that are mounted together from top to bottom. The inner side of the lower part of the middle joint 59 is provided with an elastic retaining ring whose upper end is in contact with the lower end of the large insulating sleeve. The inner side of the lower end of the large insulating sleeve is fixed with an inner ring platform mounted on the outer side of the contact 63. This can prevent the contact 63 and the second insulating sleeve 60 from separating from each other. The inner side of the upper end of the jack seat 62 and the outer side of the lower end of the pin 61 can be welded to enhance the connection strength. Through such an arrangement, a reliable connection between the contact 63 and the terminal 58 can be achieved, which is convenient for uploading the detection component signal, and can improve the insulation performance, thereby reducing the failure rate.

[0055] Embodiment 11: As an optimization of the above embodiment, as shown in the attached Figure 1 , 4As shown in Figure 5, the connector assembly also includes a gland sleeve 65, a sealing socket 66, a third connecting cable 67, a fourth connecting cable 68, a locking mechanism and a straightening spring piece 69. An outer ring groove is provided on the upper outer side of the middle connector 59, and a connecting sleeve 70 arranged in half is sleeved in the outer ring groove. The upper outer side of the connecting sleeve 70 and the inner side of the lower end of the salvaging head 77 are fixedly installed together. A gland sleeve 65 is fixedly installed on the upper inner side of the middle connector 59, and a sealing socket 66 whose lower inner side is tightly sleeved with the upper outer side of the pin 61 is sleeved in the gland sleeve 65. A wiring sleeve 71 is sleeved on the inner side of the middle part of the salvaging head 77, and the lower end of the wiring sleeve 71 and the sealing socket 66 are connected through the third connecting cable 67. A cable sleeve 72 is fixedly installed on the upper end of the wiring sleeve 71, and a fourth connecting cable 68 is fixedly installed on the upper end of the cable sleeve 72. The upper end of the fourth connecting cable 68 passes through the salvaging head 77 and is located above the salvaging head 77. A cable sleeve 72 is fixedly installed on the upper end of the wiring sleeve 71, and a fourth connecting cable 68 is fixedly installed on the upper end of the cable sleeve 72. The upper end of the fourth connecting cable 68 passes through the salvaging head 77 and is located above the salvaging head 77. The locking mechanism of the fourth connecting cable 68 is determined by the upper and lower intervals of the outer side of the salvage head 77, and the upper and lower righting grooves are provided with upper and lower righting grooves at intervals. The upper outer side of the salvage head 77 corresponding to the position of the upper righting groove is covered with an upper sliding sleeve 73, and a plurality of upper sliding blocks 74 that can move up and down in the upper righting groove are fixedly installed on the inner side of the upper sliding sleeve 73 along the circumference. An upper telescopic groove opening downward is formed between the lower outer side of the lower part of each upper sliding block 74 and the inner side of the upper sliding sleeve 73. A lower sliding block 76 that can move up and down in the lower righting groove is fixedly installed on the inner side of the lower sliding sleeve 75 corresponding to the position of each upper sliding block 74. A lower telescopic groove opening upward is formed between the upper outer side of each lower sliding block 76 and the inner side of the lower sliding sleeve 75. A righting spring piece 69 is inserted in each upper telescopic groove, and the lower end of each righting spring piece 69 is inserted in the lower telescopic groove at the corresponding position, and the middle part of each righting spring piece 69 is arched outward.

[0056] According to the needs, a limit block is fixed on the upper end of the middle joint 59, and a limit groove matching the limit block is provided on the inner side of the lower part of the salvage head 77. The limit block is installed in the limit groove. In this way, the middle joint 59 and the salvage head 77 can be prevented from rotating relative to each other, and the distance between the upper end of the middle joint 59 and the lower end of the locking mechanism can be ensured. The connecting sleeve 70 arranged in half is fixed together by screws, and the upper outer side of the connecting sleeve 70 and the lower inner side of the salvage head 77 are screwed together. The lower outer side of the salvage head 77 is provided with a glue injection hole connected inside and outside. The glue injection hole is sealed and screwed with a glue injection screw, which is convenient for filling grease in the salvage head 77 to improve the insulation performance of the third connecting cable 67 and the fourth connecting cable 68. The upper straightening groove and the lower straightening groove are arranged at intervals along the circumference. In this embodiment, the number of upper straightening grooves is four.

[0057] The cam 76 is provided with a plurality of connecting sleeves 70, and the cam 76 is provided with a plurality of connecting sleeves 71. The cam 76 is provided with a plurality of connecting sleeves 72, and the cam 76 is provided with a plurality of connecting sleeves 73. The cam 76 is provided with a plurality of connecting sleeves 71 and 72. The cam 76 is provided with a plurality of connecting sleeves 71 and 72. The cam 76 is provided with a plurality of connecting sleeves 71 and 72.

[0058] Embodiment 12: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, the locking mechanism includes a first cone sleeve 78, a second cone sleeve 79, a third cone sleeve 80, a locking sleeve 81 and a pressing sleeve 82. A threaded sleeve 83 is fixedly installed on the inner side of the upper part of the fishing head 77. The outer side of the lower end of the threaded sleeve 83 and the inner side of the upper end of the first cone sleeve 78 are fixedly installed together. A plurality of anti-rotation grooves are evenly distributed along the circumference on the outer side of the middle part of the first cone sleeve 78. Corresponding to each anti-rotation groove position, the outer side of the upper part of the fishing head 77 is provided with an anti-rotation screw hole connected inside and outside. Each anti-rotation screw hole is threaded with an anti-rotation screw 84 whose end is located in the anti-rotation groove at the corresponding position. The inner side of the lower part of the first cone sleeve 78 is a conical surface with a small top and a large bottom. A second cone sleeve 79 is sleeved on the side, and the outer and inner sides of the second cone sleeve 79 are both conical surfaces matching the inner side of the first cone sleeve 78. A third cone sleeve 80 is sleeved on the inner side of the second cone sleeve 79, and the outer side of the third cone sleeve 80 is a conical surface matching the inner side of the second cone sleeve 79. A fixing piece 85 whose upper end is fixed to the corresponding position of the outer side of the fourth connecting cable 68 is provided between the outer side of the second cone sleeve 79 and the inner side of the first cone sleeve 78, and between the inner side of the second cone sleeve 79 and the outer side of the third cone sleeve 80. A locking sleeve 81 is fixedly installed on the outer side of the lower end of the first cone sleeve 78, and a compression sleeve 82 whose upper end abuts against the lower end of the third cone sleeve 80 is installed on the inner side of the lower part of the locking sleeve 81.

[0059] According to the requirements, the fixing member 85 is an insulating layer and a protective layer on the outside of the fourth connecting cable 68. During use, by rotating the locking sleeve 81, the locking sleeve 81 causes the pressing sleeve 82 to move upward, so that the first cone sleeve 78, the second cone sleeve 79 and the third cone sleeve 80 are close to each other and clamp the fixing member 85, so that the fourth connecting cable 68 can be reliably fixed. By setting the anti-rotation screw 84, the fourth connecting cable 68 can be prevented from rotating relative to the fishing head 77 during use, and the fourth connecting cable 68 is prevented from being twisted off. The conical surfaces of the first cone sleeve 78, the second cone sleeve 79 and the third cone sleeve 80 can increase the contact area with the fixing member 85, thereby ensuring that the fourth connecting cable 68 and the fishing head 77 are firmly fixed.

[0060] Embodiment 13: As an optimization of the above embodiment, as shown in the attached Figure 1 , 4 As shown, a fifth connecting cable 86 is fixedly connected between the lower end of the locking sleeve 81 and the upper end of the middle connector 59. During use, such an arrangement can improve the safety performance of the locking sleeve 81 during use.

[0061] Embodiment 14: As an optimization of the above embodiment, as shown in the attached Figure 1 , 5 As shown, an insulating layer 87 is provided between the upper outer side of the third connecting cable 67 and the lower outer side of the fourth connecting cable 68, a wear-resistant base 88 is provided on the inner side of the middle part of the straightening spring 69, and a U-shaped wear-resistant block 89 with an inward-opening cross-section is fixedly installed on the outer side of the wear-resistant base 88, a fixing hole is formed on the inner side of the wear-resistant block 89 and the outer side of the wear-resistant base 88, and the outer side of the middle part of the straightening spring 69 is fixedly installed in the fixing hole.

[0062] According to the requirements, the insulating layer 87 is a known technology, such as a high-voltage self-adhesive tape wrapped around the outside of the third connecting cable 67 and the outside of the fourth connecting cable 68. During use, the wear-resistant base 88 and the wear-resistant block 89 are provided to facilitate the disassembly and assembly of the straightening spring 69. The provision of the wear-resistant block 89 can also improve the wear resistance and extend the service life of the straightening spring 69.

[0063] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A recyclable pumping seal device, characterized in that It includes a joint assembly, a detection assembly and a setting assembly which are installed together in sequence from top to bottom; The detection component can obtain the position of the detection component in the well according to the change of the material of the adjacent casing and casing collar in the well; The joint assembly can connect the detection assembly and the ground equipment together; The sealing assembly can seal the target position, and when recovered, it can be separated from the detection assembly and remain in the well to maintain the sealing state of the target position. At the same time, after the fracturing fluid acts on the sealing assembly, the sealing assembly can drive the detection assembly and the joint assembly to move in the horizontal well.

2. The recyclable pumping seal device according to claim 1, characterized in that The sealing assembly includes a ball seat, an articulated cylinder, a thrust cylinder, a valve core mechanism, a center shaft, a sealing ball, a straightening tail seat and a leather cup. The upper end of the ball seat and the lower end of the detection assembly are sealed and fixedly installed together. The inner side of the lower part of the ball seat is provided with an articulated groove opening downward. The upper end of the articulated cylinder is fixed with an articulated ball articulated in the articulated groove. The inner side of the lower end of the articulated cylinder and the outer side of the upper end of the thrust cylinder are fixedly installed together. The outer side of the upper part of the articulated cylinder corresponding to the position above the thrust cylinder is evenly spaced along the circumference with a number of inlet holes connected inside and outside. The inner side of the thrust cylinder is provided with an upper and lower through hole. A flow passage is provided, and a valve core mechanism capable of opening and closing the flow passage is provided at the upper end of the thrust cylinder. A hollow central shaft is sleeved on the inner side of the lower part of the flow passage, and a second elastic reset member is provided between the upper part of the central shaft and the lower part of the thrust cylinder. The lower end of the central shaft and the upper part of the seating ball are fixedly mounted together, and a plurality of liquid outlets connected inside and outside are evenly distributed along the circumference at the outer side of the lower part of the central shaft corresponding to the position above the seating ball, and a straightening tailstock is sleeved on the outer side of the lower part of the central shaft corresponding to the position above the liquid outlet hole, and the upper end of the straightening tailstock and the lower end of the thrust cylinder are mounted together. A guide ring stage is fixed on the outer side of the lower part of the center shaft corresponding to the position below the thrust cylinder. The outer side of the lower part of the guide ring stage presents a conical outer guide surface with a larger upper part and a smaller lower part. A guide ring groove is provided on the outer side of the upper part of the straightening tailstock corresponding to the position of the guide ring stage. A plurality of radially penetrating inner guide mounting holes are evenly spaced along the circumference in the middle of the guide ring groove. A buckle ring is fixedly installed in the guide ring groove. A radially penetrating outer guide mounting hole is provided on the outer side of the buckle ring corresponding to the position of each inner guide mounting hole. A wedge block is slidably installed in each inner guide mounting hole. Each wedge block A guide column passing through the outer guide mounting hole at the corresponding position is fixed on the outside. The inner side of the upper part of the wedge block is a conical surface matching the outer guide surface. A first elastic reset member is provided between the outer side of the wedge block and the inner side of the buckle, which can make the inner side of the wedge block abut against the outer side of the guide ring platform. A lower pressure cover is installed on the outer side of the buckle corresponding to the upper side of the guide column, and an upper pressure cover is installed on the outer side of the upper part of the thrust cylinder corresponding to the position below the hinge cylinder. A number of annular partitions are arranged between the upper and lower pressure covers, and leather cups are installed on the upper and lower sides of each partition.

3. The recyclable pumping seal device according to claim 2, characterized in that The flow passage comprises a first straight hole, a second straight hole, a third straight hole, a fourth straight hole and a fifth straight hole which are connected in sequence from top to bottom. The inner diameters of the first straight hole, the second straight hole and the third straight hole decrease in sequence, and the inner diameters of the third straight hole, the fourth straight hole and the fifth straight hole increase in sequence. A plurality of slots opening inward are evenly spaced on the step surface between the second straight hole and the third straight hole. The valve core mechanism comprises a valve cover, a valve stem and a third elastic reset member. The outer side of the lower part of the valve cover is fixedly installed in the first straight hole. A switch hole which passes through from top to bottom is provided in the center of the upper end of the valve cover. The valve A T-shaped valve stem with a larger upper portion and a smaller lower portion is mounted on the inner side of the cover, the outer side of the lower portion of the valve stem is mounted in the third straight hole, a third elastic reset member is provided between the step surface between the second straight hole and the third straight hole and the outer side of the upper portion of the valve stem, which enables the upper end of the valve stem to be in sealing contact with the inner side of the upper portion of the valve cover, a first step surface is provided on the inner side of the upper portion of the straightening tail seat corresponding to the upper end position of the guide ring platform, a limiting ring platform is fixed on the outer side of the upper portion of the central axis corresponding to the position of the first step surface, and a second elastic reset member is installed between the step surface between the fourth straight hole and the fifth straight hole and the upper end of the limiting ring platform; Or / and, a plurality of radially penetrating check holes are evenly distributed along the circumference on the outer side of the lower part of the straightening tailstock corresponding to the position below the buckle ring, a clamping screw is threaded in each check hole, a check pin is sleeved in the check hole corresponding to the position between the clamping screw and the outer side of the central shaft, a fourth elastic reset member is provided between the clamping screw and the check pin so that the end of the check pin abuts against the outer side of the central shaft, and a check ring groove is provided on the outer side of the central shaft corresponding to the position between the check hole and the lower end of the straightening tailstock; Or / and, a first filter screw is detachably fixedly installed in the liquid inlet hole, a fixing groove opening upward is provided on the upper part of the sealing ball, the outer side of the lower part of the central shaft is fixedly installed in the fixing groove, a second step surface is provided on the inner side of the lower part of the central shaft corresponding to the position above the liquid outlet hole, a second filter screw whose upper end contacts the second step surface is fixedly installed on the inner side of the lower part of the central shaft, and a filtering channel communicating with the inner side of the central shaft is provided on the outer side of the lower part of the second filter screw corresponding to each liquid outlet hole position; Or / and, the hinge groove includes a first hinge hole, a second hinge hole and a third hinge hole which are connected in sequence from top to bottom, the inner wall of the second hinge hole is spherical, the hinge ball is hingedly installed in the second hinge hole, a locking nut is fixedly installed on the inner side of the lower part of the third hinge hole, the locking nut is sleeved on the outer side of the upper part of the Y-shaped hinge cylinder with an inverted cross-section, an annular gasket is sleeved on the inner side of the lower part of the first hinge hole, and a fifth elastic reset part is installed on the inner side of the upper part of the first hinge hole so that the inner side of the lower end of the annular gasket is abutted against the upper part of the hinge ball.

4. The recyclable pumping seal device according to claim 1, 2 or 3, characterized in that The detection component includes an outer tube, an upper magnetic steel, a lower magnetic steel, a coil assembly, a first connecting cable and a second connecting cable. The outer side of the upper end of the ball seat and the inner side of the lower end of the outer tube are sealed and fixed together, the upper end of the outer tube and the lower end of the joint assembly are sealed and fixed together, a hollow upper connecting rod is sleeved on the inner side of the upper end of the outer tube, an upper buffer sleeve is installed between the upper end of the upper connecting rod and the lower end of the joint assembly, an upper fixed ring platform is fixedly installed on the outer side of the upper part of the upper connecting rod, a coil sleeve is fixedly installed on the outer side of the lower part of the upper connecting rod, a coil ring groove is provided on the outer side of the middle part of the coil sleeve, sealing members are provided between the outer side of the coil sleeve and the inner side of the outer tube at the positions above and below the coil ring groove, a threading hole connected to the inner side of the coil sleeve is provided on the upper part of the coil ring groove, and a coil assembly is installed in the coil ring groove An annular upper magnetic steel is installed on the outer side of the upper connecting rod corresponding to the position between the upper end of the coil sleeve and the lower end of the upper fixed ring platform, a lower connecting rod is fixedly installed on the inner side of the lower part of the coil sleeve, a lower buffer sleeve is provided between the lower end of the lower connecting rod and the upper end of the ball seat, a lower fixed ring platform is fixedly installed on the outer side of the lower part of the lower connecting rod, an annular lower magnetic steel is installed on the outer side of the lower connecting rod corresponding to the position between the lower end of the coil sleeve and the upper end of the lower fixed ring platform, the upper end of the lower magnetic steel and the lower end of the upper magnetic steel are both N poles, a welding piece is fixed on the outer side of the upper end of the upper fixed ring platform, the lower end of the joint assembly and one end of the coil assembly are electrically connected together through a first connecting cable sealed and passed through the interior of the upper connecting rod and the threading hole, and the other end of the coil assembly and the welding piece are electrically connected together through a second connecting cable.

5. The recyclable pumping seal device according to claim 4, characterized in that An upper mounting groove with an upward opening is provided at the upper end of the coil sleeve, and the lower part of the upper magnetic steel is sleeved in the upper mounting groove. A plurality of vertically penetrating mounting slots are provided at intervals along the circumference of the outer side of the upper fixed ring platform, and an upper spring sheet whose inner side of the lower end abuts against the outer side of the upper part of the upper magnetic steel is fixedly installed in each slot. The middle part of each upper spring sheet protrudes outward and abuts against the inner side of the outer tube. A lower mounting groove with a downward opening is provided at the lower end of the coil sleeve, and the upper part of the lower magnetic steel is sleeved in the lower mounting groove. Or / and, a first insulating sleeve is fixedly installed on the inner side of the upper end of the upper connecting rod, a wiring terminal is fixedly installed on the inner side of the first insulating sleeve, the lower end of the wiring terminal is fixedly connected to the upper end of the first connecting cable, and the upper end of the wiring terminal is in contact with the connector assembly.

6. The recyclable pumping seal device according to claim 5, characterized in that The connector assembly includes a salvaging head, a middle connector, a second insulating sleeve, a pin, a jack seat and a contact. The outer side of the lower end of the middle connector is sealed and fixedly installed on the inner side of the upper end of the outer tube. The upper end of the middle connector and the lower end of the salvaging head of the hollow structure are fixedly installed together. The pin is sealed and fixedly installed on the inner side of the upper part of the middle connector. The second insulating sleeve is fixedly installed on the inner side of the lower part of the middle connector corresponding to the position below the pin. The jack seat is installed on the inner side of the upper part of the second insulating sleeve. The inner side of the upper end of the jack seat and the outer side of the lower end of the pin are tightly fitted together. The contact is installed on the inner side of the lower part of the second insulating sleeve. A sixth elastic reset member is provided between the lower end of the jack seat and the contact, which can make the lower end of the contact and the upper end of the terminal abut against each other.

7. The recyclable pumping seal device according to claim 6, characterized in that The joint assembly also includes a gland sleeve, a sealing socket, a third connecting cable, a fourth connecting cable, a locking mechanism and a straightening spring piece. An outer ring groove is provided on the upper outer side of the middle joint, and a connecting sleeve arranged in half is sleeved in the outer ring groove. The upper outer side of the connecting sleeve and the inner side of the lower end of the salvaging head are fixedly installed together. A gland is fixedly installed on the upper inner side of the middle joint, and a sealing socket is sleeved in the gland sleeve, which is tightly sleeved with the inner side of the lower part and the upper outer side of the pin. A wiring sleeve is sleeved on the inner side of the middle of the salvaging head, and the lower end of the wiring sleeve and the sealing socket are connected through the third connecting cable. A cable sleeve is fixedly installed on the upper end of the wiring sleeve, and a fourth connecting cable is fixedly installed on the upper end of the cable sleeve. The upper end of the fourth connecting cable passes through the salvaging head and is located above the salvaging head. A locking mechanism capable of fixing the fourth connecting cable is installed on the inner side of the upper part of the salvaging head. An upper righting groove and a lower righting groove are arranged at intervals on the upper and lower sides of the outer side of the salvage head; an upper sliding sleeve is mounted on the outer side of the upper portion of the salvage head corresponding to the position of the upper righting groove; a plurality of upper sliding blocks capable of moving up and down in the upper righting groove are fixedly installed on the inner side of the upper sliding sleeve along the circumference; an upper telescopic groove opening downward is formed between the outer side of the lower portion of each upper sliding block and the inner side of the upper sliding sleeve; a lower sliding sleeve is mounted on the outer side of the lower portion of the salvage head corresponding to the position of the lower righting groove; a lower sliding block capable of moving up and down in the lower righting groove is fixedly installed on the inner side of the lower sliding sleeve corresponding to the position of each upper sliding block; a lower telescopic groove opening upward is formed between the outer side of the upper portion of each lower sliding block and the inner side of the lower sliding sleeve; a righting spring is inserted in each upper telescopic groove; the lower end of each righting spring is inserted in the lower telescopic groove at the corresponding position; and the middle part of each righting spring is arched outward.

8. The recyclable pumping seal device according to claim 7, characterized in that The locking mechanism includes a first cone sleeve, a second cone sleeve, a third cone sleeve, a locking sleeve and a compression sleeve. A threaded sleeve is fixedly installed on the inner side of the upper part of the salvage head. The outer side of the lower end of the threaded sleeve and the inner side of the upper end of the first cone sleeve are fixedly installed together. A plurality of anti-rotation grooves are evenly distributed along the circumference on the outer side of the middle part of the first cone sleeve. An anti-rotation screw hole connected inside and outside is provided on the outer side of the upper part of the salvage head corresponding to each anti-rotation groove position. An anti-rotation screw whose end is located in the anti-rotation groove at the corresponding position is screwed in each anti-rotation screw hole. The inner side of the lower part of the first cone sleeve presents a conical surface with a small top and a large bottom. The first cone sleeve A second cone sleeve is mounted on the inner side of the lower part, and the outer side and inner side of the second cone sleeve are both cone surfaces matching the inner side of the first cone sleeve; a third cone sleeve is mounted on the inner side of the second cone sleeve, and the outer side of the third cone sleeve is a cone surface matching the inner side of the second cone sleeve; fixing parts whose upper ends are fixed to corresponding positions on the outer side of the fourth connecting cable are provided between the outer side of the second cone sleeve and the inner side of the first cone sleeve, and between the inner side of the second cone sleeve and the outer side of the third cone sleeve; a locking sleeve is fixedly installed on the outer side of the lower end of the first cone sleeve, and a compression sleeve whose upper end abuts against the lower end of the third cone sleeve is installed on the inner side of the lower part of the locking sleeve.

9. The recyclable pumping seal device according to claim 8, characterized in that A fifth connecting cable is fixedly connected between the lower end of the locking sleeve and the upper end of the middle joint.

10. The recyclable pumping seal device according to claim 7, 8 or 9, characterized in that An insulating layer is provided between the outer side of the upper part of the third connecting cable and the outer side of the lower part of the fourth connecting cable, a wear-resistant base is provided on the inner side of the middle part of the righting spring piece, a U-shaped wear-resistant block with an inward-opening cross-section is fixedly installed on the outer side of the wear-resistant base, a fixing hole is formed on the inner side of the wear-resistant block and the outer side of the wear-resistant base, and the outer side of the middle part of the righting spring piece is fixedly installed in the fixing hole.

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