Wire line coring drilling tool fisher with in-hole jam releasing function

Abstract

The utility model discloses a wire-line coring drilling tool fisher with an in-hole jam releasing function, which comprises a fishing frame, a fishing hook, a reset spring, a jam releasing mechanism, a connecting sleeve, a lifting shaft, a differential part, a ball valve seat, a rubber ring adjusting mechanism and a lifting assembly, the lifting assembly, the rubber ring adjusting mechanism, the ball valve seat connector, the differential part, the connecting sleeve and the fishing frame are sequentially and coaxially connected, and an unfreezing mechanism is arranged in the connecting sleeve. The jam releasing mechanism comprises an ejector rod, a sliding rail sleeve and a rotating piece. The jam releasing mechanism realizes jam releasing through mutual matching of sawteeth of all parts; the upper end of the stepped shaft is embedded in a groove in the bottom of the rotating piece, the rotating piece and the fishing frame are of a tubular structure, two installation grooves are formed in the side wall of the fishing frame, a fishing hook is hinged into each installation groove, and the upper end of each fishing hook is tightly attached to the conical face of the boss II. The device is simple in structure, safe separation of the fisher and the inner pipe assembly can be achieved when lifting is abnormal, the risk of drilling accidents is reduced, reliability is high, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a rope coring drilling tool salvage device with the function of releasing jams in a hole. Background Art

[0002] With the rapid development of my country's economy, the demand for mining and geological exploration of mineral resources has become more urgent, and rope coring drills have played a very important role in this. Rope coring drills mainly include three parts: outer tube assembly, inner tube assembly, and salvage device. The salvage device is mainly used to launch and salvage the inner tube assembly. If there is a jam during the salvage process, the salvage device cannot smoothly pull the inner tube assembly to the hole mouth. The existing solution is mainly to launch a card receiving cylinder at the hole mouth. The card receiving cylinder hits the outer end of the claw under the action of gravity, forcing the card receiving claw to be in an open state, releasing the spearhead, and realizing the separation of the salvage device and the inner tube assembly. However, this method has the following shortcomings: First, if the card receiving cylinder successfully forces the claw to be in an open state, the salvage device needs to be recovered to the hole mouth, and the claw can only be reset after the card receiving cylinder is manually removed, and the next salvage work can be carried out. Second, if the card receiving cylinder fails to successfully force the claw to be in an open state, the subsequent remedial plan cannot be implemented, that is, the card receiving cylinder can only be used to release the card once. In addition, when the card collecting tube is used to release the card, the claws of the salvage device are in a leaky state during operation, which also increases the risk of malfunction of the claws during the recovery process. Near-horizontal drilling salvage devices generally use fluid or air as the medium for transportation. When transporting in this way, it is usually necessary to set a sealing ring for sealing the drill pipe string and the annular gap of the salvage device to form a closed space to achieve the transportation conditions. Its structure is significantly different from that of vertical drilling salvage devices. It is not possible to achieve a set of salvage devices on site to meet the salvage needs of both vertical and horizontal drilling. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a salvage device for rope coring drill tools for geological exploration with simple structure and high reliability. It is suitable for both horizontal and vertical drilling and can automatically unstuck the drill tool when it encounters a jam, thereby reducing accident losses.

[0004] The technical solution adopted by the utility model is: a rope coring drill tool salvage device with an in-hole unblocking function, comprising a salvage frame, a salvage hook, a reset spring, an unblocking mechanism, a connecting sleeve, a lifting shaft, a differential, a ball valve seat, a rubber ring adjustment mechanism and a lifting assembly, wherein the lower end of the lifting assembly is connected to the upper end of the rubber ring adjustment mechanism, the lower end of the rubber ring adjustment mechanism is connected to the ball valve seat, the ball valve seat is connected to the differential, the connecting sleeve is tubular, the lower end of the differential is located in the inner hole of the connecting sleeve, a long straight hole is provided on the side wall of the connecting sleeve, the length direction of the long straight hole is arranged along the axis of the connecting sleeve, a pin is provided at the lower end of the differential, and the pin is inserted in the long straight hole; the lower end of the connecting sleeve is connected to the salvage frame; the unblocking mechanism is provided in the connecting sleeve;

[0005] The release mechanism comprises a push rod, a slide rail sleeve, and a rotating member; the slide rail sleeve is fixed in the connecting sleeve, a plurality of slide grooves are arranged on the slide rail sleeve, the push rod is placed in the slide rail sleeve, the upper end of the push rod is higher than the lower end of the long straight hole, a plurality of protrusions are arranged on the side wall of the lower end of the push rod, and the plurality of protrusions are respectively placed in the plurality of slide grooves, the bottom of the push rod is serrated, the lower part of the push rod is sleeved with a rotating member capable of rotating, and a plurality of serrated protrusions are arranged on the outer side wall of the rotating member; the bottom of the push rod cooperates with the serrated protrusions, and the rotating member can rotate when the push rod is pressed down; a plurality of triangular embedding grooves are arranged at the bottom of the side wall of the slide rail sleeve, and the plurality of serrated protrusions are respectively embedded in the plurality of triangular embedding grooves;

[0006] The upper end of the stepped shaft is embedded in the groove at the bottom of the rotating part, the upper part of the stepped shaft is placed in the connecting sleeve, a flange is provided on the stepped shaft, and a spring is provided between the flange and the bottom of the connecting sleeve; the lower end of the stepped shaft is placed in the salvage frame, and a boss II is provided at the lower end of the stepped shaft, and the boss II is a cone with a larger top and a smaller bottom; the salvage frame is a tubular structure, and two mounting grooves are provided on the side wall of the salvage frame, and a salvage hook is hinged in the mounting groove, and the upper end of the salvage hook is close to the conical surface of the boss II.

[0007] In the above-mentioned rope coring drill salvage device with multiple in-hole unjamming function, the rubber ring adjustment mechanism includes a rubber ring seat, a rubber ring sleeve, a rubber ring, a slider and a base; the rubber ring seat is a hollow shaft structure, a shaft shoulder is provided in the middle of the rubber ring seat, a base and a slider are provided at the upper end of the shaft shoulder, and a plurality of key grooves are provided on the upper end surface of the base; a boss I matching with the key groove is provided on the lower end surface of the slider; a conical surface I is provided on the upper end surface of the slider; the rubber ring adjustment sleeve is threaded on the rubber ring seat and is located above the slider; a conical surface II matching with the conical surface I is provided at the lower end of the rubber ring adjustment sleeve; the rubber ring is sleeved on the outside of the base and the slider.

[0008] In the above-mentioned rope coring drill fishing device with the function of multiple in-hole unstuck, the upper end of the rubber ring seat is screwed to the pulling assembly, and the lower end is screwed to the upper end of the ball valve seat.

[0009] The above-mentioned rope coring drill fishing device with the function of multiple in-hole unblocking also includes a counterweight block; the lower end of the ball valve seat is connected to the upper end of the differential member through the counterweight block.

[0010] In the above-mentioned rope coring drill fishing device with the function of multiple unjamming in the hole, a reset spring is arranged between the two fishing hooks, and the reset spring is located below the hinged pair between the fishing frame and the fishing hook.

[0011] In the above-mentioned rope coring drill salvage device with the function of multiple unjamming in the hole, the ball valve seat is provided with an axial hole I and a radial hole I which are interconnected; a bushing is provided in the axial hole I, and a steel ball is provided in the bushing; the pulling assembly is provided with radial holes II and axial holes II which are interconnected; the axial hole I is connected with the axial hole II through the center hole of the rubber ring seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1) The utility model has a simple structure. If the inner tube assembly cannot be lifted to the hole mouth due to a jam during the salvage process, or the lifting is abnormal, the salvage device and the inner tube assembly can be separated and recaptured at the bottom of the hole without the need to separately release the card collection tube and without manual intervention. The separation and capture actions at the bottom of the hole can be repeated, which reduces the risk of drilling accidents, has high reliability, and improves work efficiency. The salvage device of the utility model is suitable for both vertical and horizontal drilling conditions, and has strong compatibility with working conditions.

[0014] 2) The unblocking mechanism of the utility model is easy to switch between the two states and is easy to operate. The unblocking and capturing functions can be achieved by only using the wire rope to lift the differential and the parts above it to hit the top rod. The wire rope does not need to bear excessive load during the entire unblocking process. In addition, the salvage hook is opened and closed without being affected by the gravity of the inner tube assembly during the unblocking process. Therefore, the opening and closing action of the salvage hook is more flexible, which improves the success rate and reliability of the unblocking action, and also extends the overall service life of the salvage device.

[0015] 3) The rubber ring adjustment mechanism of the utility model can change the outer diameter of the rubber ring. When the rubber ring is not needed, the rubber ring adjustment sleeve does not contact the slider, and the rubber ring is in a state of minimum outer diameter. When the rubber ring is needed, the outer diameter of the rubber ring can be expanded by simply screwing down the rubber ring adjustment sleeve. At the same time, the rubber ring adjustment sleeve can be replaced according to different outer diameter requirements, so that the rubber ring has different maximum outer diameters, thereby meeting the needs of various working environments and having high convenience and compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the utility model.

[0017] Figure 2 It is a cross-sectional view of the card releasing mechanism of the utility model.

[0018] Figure 3 It is an exploded view of the card releasing mechanism of the utility model.

[0019] Figure 4 It is a schematic diagram of the motion condition 1 of the card release mechanism of the utility model.

[0020] Figure 5 It is a schematic diagram of the motion situation 2 of the card release mechanism of the utility model.

[0021] Figure 6 This is a schematic diagram of the installation of the rubber ring adjustment mechanism of the utility model; Figure 6(a) is a structural diagram of the rubber ring adjustment mechanism of the utility model when the rubber ring is in a state of minimum outer diameter. Figure 6 (b) is a structural diagram of the rubber ring adjustment mechanism of the utility model when the rubber ring is in a state of maximum outer diameter.

[0022] Figure 7 It is a structural diagram of the rubber ring adjusting mechanism of the utility model.

[0023] Figure 8 It is a cross-sectional view of the salvage hook of the utility model; Figure 8 (a) is a cross-sectional view of the salvage hook of the utility model when it is opened; Figure 8 (b) is a cross-sectional view of the salvage hook of the utility model when it hooks the spearhead.

[0024] Fig. 9 It is a cross-sectional view of the utility model when it is used in a horizontal drilling state.

[0025] In the figure: 1-salvage frame; 2-reset spring; 3-salvage hook; 4-rotating pin; 5-spring; 6-step shaft; 7-rotating member; 8-slide rail sleeve; 9-mandrel; 10-connecting sleeve; 11-pin shaft; 12-differential member; 13-counterweight; 14-ball valve seat; 15-bushing; 16-steel ball; 17-rubber ring seat; 18-base; 19-rubber ring; 20-slider; 21-rubber ring adjustment sleeve; 22-lifting assembly; 301-step shaft outer diameter surface; 302-boss II; 701-serrated convex block; 801-slide groove; 802-embedded groove; 901-mandrel bottom; 902-convex block I; 1801-keyway; 2001-conical surface I; 2002-boss I; 2101-conical surface II; 2102-rubber ring adjustment sleeve outer diameter surface. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figure 1-8 As shown, the utility model includes a salvage frame 1, a reset spring 2, a salvage hook 3, a rotating pin 4, a stepped shaft 6, a spring 5, a rotating member 7, a slide rail sleeve 8, a push rod 9, a connecting sleeve 10, a pin shaft 11, a differential member 12, a counterweight 13, a ball valve seat 14, a bushing 15, a steel ball 16, a rubber ring adjustment mechanism and a lifting assembly 22.

[0028] The lower end of the lifting assembly 22 is connected to the upper end of the rubber ring adjustment mechanism, and the lower end of the rubber ring adjustment mechanism is connected to the ball valve seat 14. The rubber ring adjustment mechanism includes a rubber ring seat 17, a base 18, a rubber ring 19, a slider 20 and a rubber ring adjustment sleeve 21. The rubber ring seat 17 is a hollow shaft structure, and a shaft shoulder is provided in the middle of the rubber ring seat 17. The upper end of the shaft shoulder is provided with a base 18 and a slider 20, and the slider 20 is located above the base. The upper end surface of the base 18 is provided with a plurality of key grooves 1801; the lower end surface of the slider 20 is provided with a boss 2002 that matches the key grooves 1801. The upper end surface of the slider is provided with a conical surface I 2001. The rubber ring adjustment sleeve 21 is screwed on the rubber ring seat 17 and is located above the slider 20. The lower end of the rubber ring adjustment sleeve 21 is provided with a conical surface II 2101 that matches the conical surface I. The rubber ring 19 is sleeved on the outside of the base 18 and the slider 20. The ball valve seat 14 is provided with an axial hole I and a radial hole I that are interconnected; a bushing 15 is provided in the axial hole I, and a steel ball 16 is provided in the bushing 15. The lifting assembly 22 is provided with a radial hole II and an axial hole II that are interconnected; the axial hole I is connected to the axial hole II through the center hole of the rubber ring seat 17.

[0029] The ball valve seat 14 is connected to the differential member 12 through the counterweight 13. The connecting sleeve 10 is tubular. The lower end of the differential member 12 is located in the inner hole of the connecting sleeve 10. A long straight hole is provided on the side wall of the connecting sleeve 10. The length direction of the long straight hole is arranged along the axis of the connecting sleeve 10. A pin shaft 11 is provided at the lower end of the differential member 12. The pin shaft 11 is inserted in the long straight hole. The lower end of the connecting sleeve 10 is connected to the salvage frame 1. A release mechanism is provided in the connecting sleeve 10, and the release mechanism includes a push rod 9, a slide rail sleeve 8, and a rotating member 7. The rail sleeve 8 is screwed into the connecting sleeve 10, and the rail sleeve 8 is provided with a plurality of slide grooves 801. The push rod 9 is placed in the rail sleeve, and the upper end of the push rod 9 is higher than the lower end of the long straight hole. The side wall of the lower end of the push rod 9 is provided with a plurality of protrusions I, and the plurality of protrusions I are respectively placed in the plurality of slide grooves 801. The bottom 901 of the push rod is sawtooth-shaped, and the lower part of the push rod 9 is provided with a rotating member 7 capable of rotation, and the outer side wall of the rotating member 7 is provided with a plurality of sawtooth-shaped protrusions 701; the bottom 901 of the push rod cooperates with the sawtooth-shaped protrusions 701, and the rotating member 7 can rotate when the push rod 9 is pressed down. The bottom of the side wall of the rail sleeve 8 is provided with a plurality of triangular embedded grooves 802, and the plurality of sawtooth-shaped protrusions 701 are respectively embedded in the plurality of embedded grooves 802.

[0030] The upper end of the stepped shaft 6 is embedded in the groove at the bottom of the rotating member 7. The upper part of the stepped shaft 6 is placed in the connecting sleeve. The stepped shaft 6 is provided with a flange. A spring 5 is provided between the flange and the bottom of the connecting sleeve 10. The lower end of the stepped shaft 6 is placed in the salvage frame. The lower end of the stepped shaft 6 is provided with a boss II. The boss II is a cone with a larger top and a smaller bottom. The salvage frame 1 is a tubular structure. Two mounting grooves are provided on the side wall of the salvage frame 1. A salvage hook 3 is hinged in the mounting groove. The upper end of the salvage hook 3 is close to the conical surface of the boss II. A reset spring 2 is provided between the two salvage hooks 3. The reset spring 2 is located below the hinged pair between the salvage frame 1 and the salvage hook 3.

[0031] The specific use method of the utility model is as follows:

[0032] Before the salvage device is deployed, if the drilling is vertical, the salvage device is lifted up with a wire rope, and then the release mechanism is adjusted to a state where the sawtooth-shaped protrusion 701 and the embedding groove 802 are in contact with each other. Figure 4 As shown in the first left figure, the tail of the salvage hook 3 contacts the outer diameter surface 301 of the stepped shaft, the salvage hook 3 is in the open state, the pin shaft 11 passing through the pin hole of the differential 12 contacts the upper end of the long straight hole on the connecting sleeve 10, and then the salvage device can be lowered for salvage until the salvage frame 1 contacts the salvage spear head, as shown in FIG. Figure 8 As shown in the left picture.

[0033] After the salvage device 3 contacts the salvaging spearhead, the differential 12 and its upper end parts will continue to move downward. Under the action of the counterweight 13, the lower end of the differential 12 will hit the upper end of the push rod 9, causing the push rod 9 to move downward. At this time, the bottom 901 of the push rod will contact the sawtooth shaped protrusion 701 of the rotating member, and the push rod 9 drives the rotating member 7 to overcome the elastic force of the spring 5 and move downward a certain distance. Since the bottom 901 of the push rod is located in the middle of the sawtooth shaped protrusion 701, after the bottom 901 of the push rod moves to the lower end of the slide rail sleeve 8, the sawtooth shaped protrusion 701 will continue to move a certain distance to the upper left along the bottom 901 of the push rod, and the rotating member 7 will also rotate a certain distance to the left at the same time. Then use the wire rope to pull the differential 12 and the parts above it until the lifting shaft 11 contacts the upper end of the long straight hole of the connecting sleeve 10 and stops. At this time, the spring 6 will rebound after losing the upper end pressure. The elastic force acts on the stepped shaft 6 and drives the rotating part 7 to move upward. Since the rotating part 7 has moved to the left for a distance, the rotating part serration 701 will move upward along the slide 801 together with the bottom 901 of the push rod until the protrusion 902 moves to the top of the slide 801. In this process, the tail of the salvage hook 3 will slowly slide from the initial contact with the outer diameter surface 301 of the stepped shaft to the contact with the bottom of the boss II 302. The salvage hook 3 changes from the open state to the closed state. After hooking the salvage spear head, the salvage device can be lifted upward to the hole mouth. Figure 8As shown. If the salvage device encounters a jam during the lifting process, which makes it impossible to smoothly lift the salvage device to the hole mouth, it is necessary to separate the salvage device from the salvage spearhead. At this time, it is only necessary to remove the tension of the wire rope, and under the action of gravity, use the lower end of the differential 12 to hit the mandrel 9 again. Since the bottom 901 of the mandrel is still located in the middle of the sawtooth-shaped protrusion 701, after the bottom 901 of the mandrel moves to the bottom of the slide rail sleeve, the rotating sawtooth-shaped protrusion 701 will rotate to the left again for a short distance, and the rotating member sawtooth-shaped protrusion 701 will enter the embedded groove 802 again. At this time, the tail of the salvage hook 3 contacts the outer diameter surface 301 of the stepped shaft, and the salvage hook 3 is in an open state, so that the salvage hook 3 is separated from the salvage spearhead. If it is necessary to salvage again, it is only necessary to repeatedly use the wire rope to control the differential 10 and its upper parts to hit the mandrel 9, so that the rotating member 7 repeatedly rotates clockwise, so as to switch the opening and closing states of the salvage device, and achieve the purpose of repeated salvage in the hole.

[0034] If it is horizontal drilling, the counterweight 13 needs to be removed first. Since the upper and lower ends of the counterweight 13 are screwed in the same way, after removing the counterweight 13, it is only necessary to screw the ball valve seat 14 to the differential 12. Then adjust the state of the rubber ring adjustment mechanism. Since the sealing function of the rubber ring 19 is not needed in most cases during vertical drilling, the outer diameter of the rubber ring needs to be adjusted in the horizontal drilling rig so that the rubber ring 19 can block the annular gap between the rubber ring 19 and the drill pipe. At this time, it is only necessary to twist the rubber ring adjustment sleeve 21 so that the conical surface II 2101 of the rubber ring adjustment sleeve contacts the conical surface I 2001. Then the rubber ring adjustment sleeve 22 can smoothly slide the slider 20 along the key groove 1801 until the outer diameter of the rubber ring 19 reaches the maximum when the outer diameter surface 2102 of the rubber ring adjustment sleeve contacts the concave surface 2003 of the slider. Then use the power of the fluid medium or air medium to replace the gravity, repeat the operation during vertical drilling, and a series of actions of salvaging and unblocking can be completed.

Claims

1. A rope coring drill fishing device with an in-hole unblocking function, comprising a fishing frame, a fishing hook, an unblocking mechanism, a connecting sleeve, a lifting shaft, a differential, a ball valve seat, a rubber ring adjusting mechanism and a lifting assembly, wherein the lower end of the lifting assembly is connected to the upper end of the rubber ring adjusting mechanism, the lower end of the rubber ring adjusting mechanism is connected to the ball valve seat, the ball valve seat is connected to the differential, the connecting sleeve is tubular, the lower end of the differential is located in the inner hole of the connecting sleeve, a long straight hole is provided on the side wall of the connecting sleeve, the length direction of the long straight hole is arranged along the axis of the connecting sleeve, a pin is provided at the lower end of the differential, and the pin is inserted in the long straight hole; the lower end of the connecting sleeve is connected to the fishing frame; the unblocking mechanism is provided in the connecting sleeve; Its characteristics are: The release mechanism comprises a push rod, a slide rail sleeve, and a rotating member; the slide rail sleeve is fixed in the connecting sleeve, a plurality of slide grooves are arranged on the slide rail sleeve, the push rod is placed in the slide rail sleeve, the upper end of the push rod is higher than the lower end of the long straight hole, a plurality of protrusions are arranged on the side wall of the lower end of the push rod, and the plurality of protrusions are respectively placed in the plurality of slide grooves, the bottom of the push rod is serrated, the lower part of the push rod is sleeved with a rotating member capable of rotating, and a plurality of serrated protrusions are arranged on the outer side wall of the rotating member; the bottom of the push rod cooperates with the serrated protrusions, and the rotating member can rotate when the push rod is pressed down; a plurality of triangular embedding grooves are arranged at the bottom of the side wall of the slide rail sleeve, and the plurality of serrated protrusions are respectively embedded in the plurality of triangular embedding grooves; The upper end of the stepped shaft is embedded in the groove at the bottom of the rotating part, the upper part of the stepped shaft is placed in the connecting sleeve, a flange is provided on the stepped shaft, and a spring is provided between the flange and the bottom of the connecting sleeve; the lower end of the stepped shaft is placed in the salvage frame, and a boss II is provided at the lower end of the stepped shaft, and the boss II is a cone with a larger top and a smaller bottom; the salvage frame is a tubular structure, and two mounting grooves are provided on the side wall of the salvage frame, and a salvage hook is hinged in the mounting groove, and the upper end of the salvage hook is close to the conical surface of the boss II at the lower end of the stepped shaft.

2. The rope coring drill fishing device with in-hole unstuck function according to claim 1 is characterized by: The rubber ring adjustment mechanism comprises a rubber ring seat, a rubber ring sleeve, a rubber ring, a slider and a base; the rubber ring seat is a hollow shaft structure, a shaft shoulder is provided in the middle of the rubber ring seat, a base and a slider are provided at the upper end of the shaft shoulder, and a plurality of key slots are provided on the upper end surface of the base; a boss I matching with the key slots is provided on the lower end surface of the slider; a conical surface I is provided on the upper end surface of the slider; the rubber ring adjustment sleeve is threadedly connected to the rubber ring seat and is located above the slider; a conical surface II matching with the conical surface I is provided at the lower end of the rubber ring adjustment sleeve; the rubber ring is sleeved on the outside of the base and the slider.

3. The rope coring drill fishing device with in-hole unstuck function according to claim 2 is characterized by: The upper end of the rubber ring seat is threadedly connected to the lifting assembly, and the lower end is threadedly connected to the upper end of the ball valve seat.

4. The rope coring drill fishing device with in-hole unstuck function according to claim 2 is characterized by: It also includes a counterweight block; the lower end of the ball valve seat is connected to the upper end of the differential member through the counterweight block.

5. The rope coring drill fishing device with in-hole unstuck function according to claim 1 is characterized by: A return spring is arranged between the two salvage hooks, and the return spring is located below the hinged pair between the salvage frame and the salvage hook.

6. The rope coring drill fishing device with in-hole unstuck function according to claim 2 is characterized by: The ball valve seat is provided with an axial hole I and a radial hole I which are interconnected; a bushing is provided in the axial hole I, and a steel ball is provided in the bushing; the lifting assembly is provided with a radial hole II and an axial hole II which are interconnected; the axial hole I is connected to the axial hole II through the center hole of the rubber ring seat.

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