Novel horizontal well water exploration instrument for oil field and use method of novel horizontal well water exploration instrument

Abstract

The invention discloses a novel horizontal well water exploration instrument for an oil field and a using method, and belongs to the technical field of oil field water exploration equipment. A novel horizontal well water exploration instrument for an oil field comprises a stretching column and further comprises a sealing structure, an umbrella-shaped connecting rod mechanism and a pushing and stretching protection mechanism. The upper end of the sealing structure is connected with the bottom surface of the extending column through a transverse slide rail mechanism; the upper end of the umbrella-shaped connecting rod mechanism is connected with the bottom surface of the stretching-in column, and the lower end is connected with the pushing-stretching protection mechanism; the tail end of an umbrella rib of the umbrella-shaped connecting rod mechanism is connected with the sealing structure; and a water sensor is embedded in the lower end of the pushing and stretching protection mechanism. The water sensor is effectively protected, meanwhile, the sensing accuracy of water finding is guaranteed, and the service life of the water sensor is prolonged.

Description

Technical Field

[0001] This invention relates to the field of oilfield water-finding equipment technology, and more specifically, to a novel oilfield horizontal well water-finding instrument and its usage method. Background Technology

[0002] A horizontal well is a well whose borehole trajectory reaches a horizontal angle (approximately 90 degrees) and then extends for a certain length (generally more than six times the thickness of the oil-bearing layer). With continuous advancements in science and technology, horizontal well production technology has been increasingly widely applied in oilfield exploration, and a production technology system adapted to different types of reservoirs has been established. Compared with traditional oil production techniques, horizontal wells have advantages such as longer penetration into the oil-bearing layer, larger drainage area, and higher economic benefits. As oilfield development deepens and reservoir development enters the medium-to-high water-cut stage, water-finding technology in oil wells becomes a crucial aspect of monitoring during oilfield development. Currently, domestic oilfields mainly rely on annular and gas-lift testing technologies and mechanical water-finding technologies for vertical well water-finding.

[0003] Publication (Announcement) No.: CN211038627U discloses a water-finding tubing string for oil and gas field development, comprising a drill bit, tubing string, water sensor, quick-connect device, and cylinder. The right end of the drill bit is mechanically connected to the left end of the tubing string, and the water sensor is fixedly connected to the left end of the tubing string. The end of the tubing string away from the drill bit is mechanically connected to the quick-connect device, and the end of the quick-connect device away from the tubing string is mechanically connected to the cylinder. The quick-connect device consists of a quick-connect body, a rotating cylinder, a sliding rod, a collar, a connecting mechanism, a rotating shaft, and a half-gear. The rotating cylinder is fitted into a groove in the quick-connect body and is movably connected. The sliding rod passes through the quick-connect body, and its right end is embedded in the left end of the connecting mechanism. The sliding rod has four rods evenly arranged around the central axis of the rotating shaft. This prior art uses a quick-connect device to quickly connect the tubing string and the cylinder, achieving self-locking, which can extend the tubing string length and increase the water-finding depth.

[0004] Publication (Announcement) No.: CN108397186A discloses a horizontal well temperature-induced water-finding device and method, including a plug, a water-finding unit, tubing, and a pumping device. The upper half of the tubing is a vertical tubing, and the lower half is a horizontal tubing. The pumping device is connected inside the vertical tubing. The water-finding unit and the plug are connected to the horizontal tubing from left to right. This method solves the problems of long water-finding cycles and high construction intensity in existing methods, and further shortens the water-finding cycle, improves water-finding efficiency, and reduces the labor intensity of on-site construction personnel. The method is convenient to construct, simple to operate, and can effectively reduce testing costs.

[0005] Publication No. CN210509154U discloses a novel horizontal well water-finding device. It includes a cable head, a rotating sub, a pressure and temperature probe, a magnetic positioning sensor, and a tail cone arranged sequentially. Between the magnetic positioning sensor and the instrument guide claw, a first gamma probe, a second gamma probe, a tracer fluid injector, and the instrument guide claw are also arranged sequentially. The tracer fluid injector has a tracer fluid nozzle. The guide claw is used to adjust the direction of the entire horizontal well water-finding device as it passes through the instrument guide section of the test tubing, thereby aligning the tracer fluid nozzle with the injection groove on the test tubing. This effectively eliminates the occurrence of the instrument getting stuck downhole, allowing the pumping unit to operate without stopping during testing, eliminating the need for a coiled tubing truck, and reducing testing costs.

[0006] The aforementioned existing technologies all involve placing the pipeline directly into the oil well and then sensing the water using a water sensor. However, during the insertion process, the water sensor is always exposed, which can lead to collisions, damage to the sensor, and affect the water-finding results. To solve this problem, a new type of horizontal well water-finding instrument for oil fields and its usage method are proposed. Summary of the Invention

[0007] 1. Technical problems to be solved

[0008] The purpose of this invention is to provide a new type of water-finding instrument for horizontal wells in oil fields and its usage method, solving the problem that the water sensor in the prior art is exposed and easily damaged by collision.

[0009] 2. Technical Solution

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A novel water-finding instrument for horizontal wells in oilfields includes an insertion column, a sealing structure, an umbrella-shaped linkage mechanism, and a push-out protection mechanism.

[0012] The upper end of the sealing structure is connected to the bottom surface of the extending column via a transverse slide rail mechanism;

[0013] The upper end of the umbrella-shaped linkage mechanism is connected to the bottom surface of the column, and the lower end is connected to the push-out protection mechanism; the end of the umbrella rib of the umbrella-shaped linkage mechanism is connected to the sealing structure.

[0014] A water sensor is embedded in the lower end of the push-out protection mechanism.

[0015] As an optional solution to the technical solution of this application, the sealing structure includes a sealing arc, and there are multiple sealing arcs. The sealing arcs are in the form of an elliptical arc structure, and the multiple sealing arcs are aggregated together to form half of the elliptical structure, which is used to cover the outside of the push-out protective mechanism.

[0016] As an optional solution to the technical solution of this application, the transverse slide rail mechanism includes a first trapezoidal groove, and a first trapezoidal block is fixedly provided at the upper end of the sealing arc. The number of the first trapezoidal grooves is the same as the number of sealing arcs, and the first trapezoidal block is slidably connected to the first trapezoidal groove.

[0017] As an optional solution to the technical solution of this application, the umbrella-shaped linkage mechanism includes a limiting plate, umbrella ribs, and telescopic rod;

[0018] A circular cavity is provided at the center of the bottom surface of the extension column, the telescopic rod is embedded in the circular cavity, the movable end of the telescopic rod is connected and fixed to the limiting plate, and the lower end of the limiting plate is connected to the extension protection mechanism.

[0019] The lower circumferential outer wall of the limiting plate is provided with a ring-shaped, equally spaced square groove. The number of square grooves is the same as the number of sealing arcs. One end of the umbrella rib is rotatably connected to the square groove.

[0020] A hinge seat is fixedly provided on the inner wall of the sealing arc. The inner wall of the hinge seat is connected to the other end of the umbrella rib via a pin. The number of umbrella ribs is the same as the number of sealing arcs.

[0021] As an optional solution to the technical solution of this application, the push-out protection mechanism includes a protective box, a primary extension box, and a secondary extension box. The primary extension box is slidably disposed in the protective box, the secondary extension box is slidably disposed in the primary extension box, and the water sensor is disposed in the secondary extension box.

[0022] As an optional solution to the technical solution of this application, the upper end of the protective box is fixedly connected to the limiting plate;

[0023] The upper wall of the protective box has a square cavity and a machine cavity inside;

[0024] A worm gear is rotatably connected to the square cavity via a rotating shaft. A motor is installed inside the cavity. The output shaft of the motor extends through the inner wall of the cavity into the square cavity and is fixedly connected to a worm. The worm gear meshes with the worm.

[0025] The protective box is rotatably connected to a lead screw. The upper end of the lead screw passes through the inner wall of the protective box, extends into the square cavity, and is fixedly connected to the worm gear. The lead screw is threadedly connected to the first-stage extension box and is used to drive the first-stage extension box to move relative to the protective box.

[0026] As an optional solution to the technical solution of this application, the inner wall of the protective box is provided with a second trapezoidal groove, and the first-stage protrusion is fixedly provided with a second trapezoidal block on the outer wall of the box, and the second trapezoidal groove and the second trapezoidal block are slidably connected;

[0027] A baffle is fixed to the top of the first-stage extension box, and a threaded hole is opened in the middle of the baffle, which is threadedly connected to the lead screw.

[0028] As an optional solution to the technical solution of this application, two square slots are symmetrically arranged on both sides of the first-stage extension box. The two square slots are located at the upper and lower parts of the first-stage extension box, respectively. A sprocket is rotatably connected inside each square slot through a rotating shaft. A chain is provided on the outer side of the two sprockets on the same side. The chain is meshed with the sprocket. A first fixing block is fixedly provided on the part of the chain outside the first-stage extension box. The first fixing block is connected and fixed to the inner wall of the protective box.

[0029] As an optional solution to the technical solution of this application, the inner wall of the first-stage extension box is provided with a third trapezoidal groove, the outer side of the second-stage extension box is fixedly connected with a third trapezoidal block, the third trapezoidal block is slidably connected with the third trapezoidal groove, and the outer wall of the second-stage extension box is fixedly connected with a second fixing block, which is connected and fixed to the chain.

[0030] As an optional solution to the technical solution of this application, the lower end of the protective box is connected to a door via a hinge. A spring is provided on the inner side of the door, and hooks are hung at both the upper and lower ends of the spring. The spring is set in an inclined structure, and the hooks are divided into an upper hook and a lower hook. The upper hook is engaged with the inner wall of the protective box, and the lower hook is engaged with the door.

[0031] As an optional solution to the technical solution of this application, a pump body is embedded inside the inserted column;

[0032] The pump body input end is connected to the cavity formed by multiple sealing arcs through a first hose, and the pump body output end is connected to the outside through a second hose.

[0033] As an optional solution to the technical solution of this application, the telescopic rod, motor, water sensor, and pump body are connected to the controller through wiring holes. The controller is located outside the well and can control the start and stop of the telescopic rod, motor, and pump body, and can receive signal data from the water sensor.

[0034] As an optional solution to the technical solution of this application, a sealing rubber is fixedly provided on the outer wall at the edge of the sealing arc.

[0035] As an optional solution to the technical solution of this application, both the protective box and the barrier door are fixedly connected with rings. The rings are divided into upper hanging rings and lower hanging rings. The upper hanging ring is fixedly connected to the protective box and engages with the upper hook. The lower hanging ring is fixedly connected to the barrier door and engages with the lower hook.

[0036] A method for using a new type of water-finding instrument for horizontal wells in oilfields includes the following steps:

[0037] S1. Steps for using a combined horizontal well water finding instrument;

[0038] S2. Steps for lowering a water-finding instrument into a horizontal well;

[0039] S3. Release the seal;

[0040] S4. Steps to extend the water sensor;

[0041] S5. Steps for retrieving and sealing the water sensor;

[0042] S6. Vacuuming and corrosion prevention steps.

[0043] The specific steps are as follows:

[0044] S1. Combined horizontal well water finding instrument: A new type of horizontal well water finding instrument for oilfields is assembled so that the secondary extension box is stored in the primary extension box, and the primary extension box is stored in the protective box. The gate is in the closed state, and the sealing structure is in the retracted state. The initial position of the limit plate is set. When the limit plate is above the hinge seat, the telescopic rod is pushed outward to release the seal. When the limit plate is below the hinge seat, the telescopic rod is pulled inward to release the seal.

[0045] S2. Lower the tubing string and extend it into the well to reach the desired water-finding location.

[0046] S3. Release the seal. Drive the telescopic rod to extend or retract via the controller, allowing the umbrella ribs to be pulled inward or pushed outward, causing the sealing arc to move along the first trapezoidal groove, opening the sealing arc and exposing the equipment inside. When the seal is released by pushing outward, the protective box will push forward; when the seal is released by pulling inward, the protective box will retract.

[0047] S4. Extend the water sensor. The controller drives the motor output shaft to rotate, which in turn drives the worm gear to rotate, causing the lead screw to rotate. This causes the first-stage extension box to move outward. The movement of the first-stage extension box causes the chain to shift, which in turn causes the second-stage extension box to extend, thus exposing the sensor to the outside for operation.

[0048] S5. Retract and seal the water sensor. When the water search is completed or it is necessary to continue to search for water, the reverse operation is performed to retract the sensor. The controller drives the motor to rotate in the opposite direction, causing the secondary extension box and the primary extension box to retract. After retracting into the protective box, the spring closes the door, protecting the sensor. The controller drives the telescopic rod to extend and retract, restoring the umbrella ribs to their initial state and driving the sealing structure back to the sealed state.

[0049] S6. Vacuuming and corrosion prevention: The pump body is activated by the controller to output the liquid inside the sealed structure.

[0050] 3. Beneficial effects

[0051] Compared with the prior art, the advantages of this invention are:

[0052] 1. It effectively protects the sensors from damage, while ensuring the accuracy of water detection and extending its service life.

[0053] 2. Use sealing rubber to ensure a high degree of sealing, preventing liquid from entering during penetration.

[0054] 3. The water sensor can be self-locked by its threads after it extends.

[0055] 4. A barrier is provided to protect the sensor in case there are hard materials inside after the sealing arc is closed.

[0056] 5. When the device is closed and stowed after use, the internal liquid can be discharged through the pump body, reducing the corrosion of the sensor by the liquid or prolonged immersion, thus extending its service life. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the structure of a novel horizontal well water-finding instrument for oilfields according to the present invention;

[0058] Figure 2 This is a schematic diagram of the structure of the lower end of the insertion column of a novel horizontal well water-finding instrument for oilfields according to the present invention. Figure 1 ;

[0059] Figure 3 This is a schematic diagram of the structure of the lower end of the insertion column of a novel horizontal well water-finding instrument for oilfields according to the present invention. Figure 2 ;

[0060] Figure 4 This is a half-sectional schematic diagram of the square box and the gate of a new type of horizontal well water-finding instrument for oil fields according to the present invention.

[0061] Figure 5 This is a schematic diagram of the secondary frame and the protruding block of a novel horizontal well water-finding instrument for oilfields according to the present invention;

[0062] Figure 6 This invention relates to a novel water-finding instrument for horizontal wells in oilfields. Figure 3 Enlarged view of the structure at point A in the middle;

[0063] Figure 7 This invention relates to a novel water-finding instrument for horizontal wells in oilfields. Figure 4 Enlarged view of the structure at point B in the middle;

[0064] Explanation of the numbers in the diagram: 1. Insertion column; 101. Circular cavity; 102. First trapezoidal groove; 2. Umbrella-shaped linkage mechanism; 201. Limiting plate; 202. Square groove; 203. Umbrella rib; 204. Telescopic rod; 3. Sealing structure; 301. Sealing arc; 302. Hinge seat; 303. Sealing rubber; 304. First trapezoidal block; 4. Push-out protection mechanism; 401. Protective box; 402. Square cavity; 403. Machine cavity; 404. Motor; 405. Worm gear; 40 6. Worm gear; 407. Lead screw; 408. Second trapezoidal groove; 409. First-stage extension box; 4010. Second trapezoidal block; 4011. Baffle; 4012. Threaded hole; 5. Square groove; 501. Sprocket; 502. Chain; 503. Trapezoidal groove C; 504. Second-stage extension box; 505. Second fixing block; 506. Third trapezoidal block; 507. Gate; 508. Spring; 509. Hook; 5010. Ring; 5011. First fixing block. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] Example 1

[0067] Please see Figures 1 to 7 This invention provides a technical solution:

[0068] A novel water-finding instrument for horizontal wells in oilfields includes an insertion column 1, a sealing structure 3, an umbrella-shaped connecting rod mechanism 2, and a push-out protection mechanism 4.

[0069] The upper end of the sealing structure 3 is connected to the bottom surface of the extending column 1 via a transverse slide rail mechanism;

[0070] The upper end of the umbrella-shaped linkage mechanism 2 is connected to the bottom surface of the extension column 1, and the lower end is connected to the push-out protection mechanism 4; the end of the umbrella rib 203 of the umbrella-shaped linkage mechanism 2 is connected to the sealing structure.

[0071] The lower end of the push-out protection mechanism 4 is embedded with a water sensor, and a pump body is embedded inside the column 1.

[0072] In this embodiment, during the process of the water sensor being inserted into the oil well, the water sensor is always sealed inside the sealing structure 3 and will not be subject to collision. At the same time, other substances or liquids will not enter or adhere to it, thereby effectively protecting the sensor from damage, ensuring the accuracy of water detection, and extending its service life.

[0073] The sealing structure 3 includes a sealing arc 301, and there are multiple sealing arcs 301. The sealing arcs 301 are in the shape of an elliptical arc structure. Multiple sealing arcs 301 are aggregated together to form half of the elliptical structure, which is used to cover the outside of the push-out protective mechanism 4.

[0074] In this embodiment, after the water sensor moves to the designated position inside the oil well, the multiple sealing arcs 301 can move outward to release the cover on the push-out protection mechanism 4, so that the push-out protection mechanism 4 can send the water sensor into the oil well.

[0075] The transverse slide rail mechanism includes a first trapezoidal groove 102, and a first trapezoidal block 304 is fixedly provided at the upper end of the sealing arc 301. The number of first trapezoidal grooves 102 and sealing arcs 301 is the same, and the first trapezoidal block 304 is slidably connected to the first trapezoidal groove 102.

[0076] In this embodiment, the sealing arc 301 can move along the first trapezoidal groove 102 via the first trapezoidal block 304 to achieve stable opening and closing of the sealing arc 301.

[0077] The umbrella-shaped linkage mechanism 2 includes a limiting plate 201, umbrella ribs 203, and telescopic rod 204;

[0078] A circular cavity 101 is provided at the center of the bottom surface of the column 1. The telescopic rod 204 is embedded in the circular cavity 101. The movable end of the telescopic rod 204 is connected and fixed to the limiting plate 201. The lower end of the limiting plate 201 is connected to the push-out protection mechanism 4.

[0079] The lower circumferential outer wall of the limiting plate 201 is provided with a ring-shaped, equally spaced square grooves 202. The number of square grooves 202 is the same as the number of sealing arcs 301. One end of the umbrella rib 203 is rotatably connected to the square groove 202.

[0080] A hinge seat 302 is fixedly provided on the inner wall of the sealing arc 301. The inner wall of the hinge seat 302 is connected to the other end of the umbrella rib 203 by a pin. The number of umbrella ribs 203 is the same as the number of sealing arcs 301.

[0081] In this embodiment, the extension and retraction of the telescopic rod 204 drives the vertical movement of the limiting plate 201, thereby enabling the multiple umbrella ribs 203 to be pulled inward or pushed outward. The inner end of the umbrella rib 203 is movably connected to the hole in the inner wall of the square groove 202 via a pin, and the lower end of the telescopic rod 204 extends through the inner wall of the circular cavity 101 to the outside and is fixedly connected to the upper center of the limiting plate 201. This allows the telescopic rod 204 to drive the limiting plate 201 to move up and down, thereby causing the angle of the umbrella ribs 203 to change, thus realizing the movement of the umbrella ribs 203. Through the design of the hinge seat 302, the umbrella ribs 203 can change their angle when pulled, so that the sealing arc 301 can move linearly inward and outward along the first trapezoidal groove 102, and can only move linearly. By setting all the sealing arcs 301 to form half of an elliptical structure, it can form an arc-shaped outer shell, effectively dispersing external forces and protecting the internal equipment.

[0082] The extension protection mechanism 4 includes a protection box 401, a primary extension box 409, and a secondary extension box 504. The primary extension box 409 is slidably disposed in the protection box 401, the secondary extension box 504 is slidably disposed in the primary extension box 409, and the water sensor is disposed in the secondary extension box 504.

[0083] The upper end of the protective box 401 is connected and fixed to the limiting plate 201; the upper wall of the protective box 401 has a square cavity 402 and a machine cavity 403; a worm gear 406 is rotatably connected to the square cavity 402 through a rotating shaft, and a motor 404 is installed in the machine cavity 403. The output shaft of the motor 404 extends through the inner wall of the machine cavity 403 into the square cavity 402 and is fixedly connected to a worm 405. The worm gear 406 is meshed with the worm 405; a lead screw 407 is rotatably connected inside the protective box 401. The upper end of the lead screw 407 extends through the inner wall of the protective box 401 into the square cavity 402 and is fixedly connected to the worm gear 406. The lead screw 407 is threadedly connected to the first-stage extension box 409 and is used to drive the first-stage extension box 409 to move relative to the protective box 401. The inner wall of the protective box 401 is provided with a second trapezoidal groove 408, and the outer wall of the first-stage extension box 409 is fixedly provided with a second trapezoidal block 4010. The second trapezoidal groove 408 and the second trapezoidal block 4010 are slidably connected. The top of the first-stage extension box 409 is fixedly provided with a baffle 4011, and a threaded hole 4012 is provided in the middle of the baffle 4011. The threaded hole 4012 is threadedly connected to the lead screw 407.

[0084] In this embodiment, the first-stage extension box 409 moves up and down along the second trapezoidal groove 408 by rotating the lead screw 407, thereby extending it out of the protective box 401. The movement of the protective box 401 is self-locking thanks to the transmission of the worm gear 406 and worm 405.

[0085] The first-stage extension box 409 has two square slots 5 on both sides with a symmetrical structure. The two square slots 5 are located at the upper and lower parts of the first-stage extension box 409, respectively. The inside of each square slot 5 is rotatably connected to a sprocket 501 through a rotating shaft. The two sprockets 501 on the same side are provided with a chain 502 on their outer sides. The chain 502 is meshed with the sprocket 501. The part of the chain 502 located outside the first-stage extension box 409 is fixedly provided with a first fixing block 5011. The first fixing block 5011 is connected and fixed to the inner wall of the protective box 401.

[0086] In this embodiment, during the up-and-down movement of the first-stage extension box 409, because the first fixed block 5011 remains stationary, the gear 501 rotates, and the chain 502 and the first-stage extension box 409 undergo relative displacement. The chain 502 can strengthen the connection between the first-stage extension box 409 and the first-stage extension box 409.

[0087] The inner wall of the first-stage extension box 409 is provided with a third trapezoidal groove 503. The outer side of the second-stage extension box 504 is fixedly connected with a third trapezoidal block 506. The third trapezoidal block 506 is slidably connected to the third trapezoidal groove 503. The outer wall of the second-stage extension box 504 is fixedly connected with a second fixing block 505. The second fixing block 505 is connected and fixed to the chain 502.

[0088] In this embodiment, the chain 502 is unfolded, and the distance between the first fixing block 5011 and the second fixing block 505 is half the length of the chain; the front end of the protruding block 504 is provided with a third trapezoidal block 506; the chain 502 is connected and fixed by the second fixing block B505, so that when the chain 502 rotates, it can drive the protruding block 504 to extend along the third trapezoidal groove 503, thereby exposing the water sensor to the outside for operation.

[0089] The lower end of the protective box 401 is connected to a door 507 via a hinge. A spring 508 is provided inside the door 507. Hooks 509 are hung at both the upper and lower ends of the spring 508. The spring 508 is set in an inclined structure. The hooks 509 are divided into upper hooks and lower hooks. The upper hook is engaged with the inner wall of the protective box 401, and the lower hook is engaged with the door 507.

[0090] In this embodiment, after the water sensor is retracted into the square box by the spring 508, the stop door 507 automatically closes, which avoids the situation where there are hard materials inside the multiple sealing arcs 301 after the sealing arcs 301 are closed, effectively protecting the sensor. In addition, the spring 508 is set with an inclined structure, so that its force is oblique, thereby smoothly pulling the stop door 507.

[0091] The pump body inlet is connected to the cavity formed by all the sealing arcs 301 via a first hose, and the pump body outlet is connected to the outside via a second hose. The pump body is designed to output internal liquid when closed and stowed after use, reducing liquid corrosion of the sensor or prolonged immersion and extending its service life.

[0092] The telescopic boom 204, motor 404, water sensor, and pump body are connected to the controller through wiring holes. The controller is located outside the well and can control the start and stop of the telescopic boom 204, motor 404, and pump body, and can receive signal data from the water sensor.

[0093] The number of the first trapezoidal groove 102, square groove 202, umbrella rib 203, and sealing structure 3 are all the same, and there are at least two of them.

[0094] Example 2

[0095] Please see Figure 3 A sealing rubber 303 is fixedly provided on the outer wall of the edge of the sealing arc 301. The sealing rubbers 303 on both sides of the sealing arc 301 are in close contact with the adjacent sealing rubbers 303. The sealing rubber 303 at the upper end is in contact with the bottom surface of the inserted column 1 and can slide. Through the design of the sealing rubber 303, it can have a high sealing performance, and no liquid will enter during the insertion process.

[0096] Please see Figure 7 Both the protective box 401 and the barrier door 507 are fixedly connected with a ring 5010. The ring 5010 is divided into an upper hanging ring and a lower hanging ring. The upper hanging ring is fixedly connected to the protective box 401 and is engaged with the upper hook. The lower hanging ring is fixedly connected to the barrier door 507 and is engaged with the lower hook, so that the barrier door 507 can close quickly and evenly.

[0097] Based on all embodiments, a method for using a novel water-finding instrument for horizontal wells in oilfields includes the following steps:

[0098] S1. A combined horizontal well water finding instrument is assembled, with the secondary extension box 504 retracted into the primary extension box 409, and the primary extension box 409 retracted into the protective box 401. The stop door 507 is in the closed state, and the sealing structure 3 is in the retracted state. The initial position of the limiting plate 201 is set. When the limiting plate 201 is above the hinge seat 302, the telescopic rod 204 is pushed outward to release the seal. When the limiting plate 201 is below the hinge seat 302, the telescopic rod 204 is pulled inward to release the seal.

[0099] S2. Lower the tubing string and extend the extension string 1 into the oil well to reach the required water-finding location;

[0100] S3. Release the seal. Drive the telescopic rod 204 to extend or retract via the controller, so that the umbrella rib 203 can be pulled inward or pushed outward, so that the sealing arc 301 moves along the first trapezoidal groove 102, opening the sealing arc 301 and exposing the equipment inside. When the seal is released by pushing outward, the protective box 401 will push forward; when the seal is released by pulling inward, the protective box 401 will retract.

[0101] S4. Extend the water sensor. The controller drives the output shaft of the motor 404 to rotate, which drives the worm gear 406 to rotate, causing the lead screw 407 to rotate. This causes the first-stage extension box 409 to move outward. The movement of the first-stage extension box 409 causes the chain 502 to shift, which in turn causes the second-stage extension box 504 to extend, thus exposing the sensor to the outside for operation.

[0102] S5. Retract and seal the water sensor. When the water search is completed or it is necessary to continue to search for water, the reverse operation is performed to retract it. The controller drives the motor 404 to rotate in the opposite direction, causing the secondary extension box 504 and the primary extension box 409 to retract. After retracting into the protective box 401, the spring 508 closes the stop door 507 to protect the sensor. The controller drives the telescopic rod 204 to extend and retract, so that the umbrella rib 203 returns to its initial state, and drives the sealing structure 3 back to the sealed state.

[0103] S6. Vacuuming and corrosion prevention: The pump body is activated by the controller to output the liquid inside the sealed structure 3.

[0104] It should be noted that the controller can be a PLC, microcontroller, or other control product that can be purchased from the market and then directly connected for use; the water sensor can also be purchased directly from the market; the pump body is an existing water pump such as a plunger pump, which is clear to those skilled in the art.

[0105] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0106] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0107] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0108] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0109] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A novel water-finding instrument for horizontal wells in oilfields, comprising an insertion column (1), characterized in that: It also includes a sealing structure (3), an umbrella-shaped linkage mechanism (2), and a push-out protection mechanism (4); The upper end of the sealing structure (3) is connected to the bottom surface of the extending column (1) via a transverse slide rail mechanism; The upper end of the umbrella-shaped linkage mechanism (2) is connected to the bottom surface of the extension column (1), and the lower end is connected to the push-out protection mechanism (4); the end of the umbrella rib (203) of the umbrella-shaped linkage mechanism (2) is connected to the sealing structure (3); A water sensor is embedded in the lower end of the push-out protection mechanism (4).

2. The novel water-finding instrument for horizontal wells in oilfields according to claim 1, characterized in that, The sealing structure (3) includes a sealing arc (301), and there are multiple sealing arcs (301). The sealing arcs (301) are in the shape of an elliptical arc structure. The multiple sealing arcs (301) are aggregated together to form half of the elliptical structure, which is used to cover the outside of the push-out protective mechanism (4).

3. The novel water-finding instrument for horizontal wells in oilfields according to claim 2, characterized in that, The transverse slide rail mechanism includes a first trapezoidal groove (102), and a first trapezoidal block (304) is fixedly provided at the upper end of the sealing arc (301). The number of the first trapezoidal groove (102) and the sealing arc (301) are the same, and the first trapezoidal block (304) is slidably connected to the first trapezoidal groove (102).

4. The novel water-finding instrument for horizontal wells in oilfields according to claim 2, characterized in that, The umbrella-shaped linkage mechanism (2) includes a limiting plate (201), umbrella ribs (203), and telescopic rod (204); A circular cavity (101) is provided at the center of the bottom surface of the insertion column (1), and the telescopic rod (204) is embedded in the circular cavity (101). The movable end of the telescopic rod (204) is connected and fixed to the limiting plate (201), and the lower end of the limiting plate (201) is connected to the push-out protection mechanism (4). The lower circumferential outer wall of the limiting plate (201) is provided with a plurality of square grooves (202) at equal intervals in a ring shape. The number of square grooves (202) is the same as the number of sealing arcs (301). One end of the umbrella rib (203) is rotatably connected in the square groove (202). The inner wall of the sealing arc (301) is fixedly provided with a hinge seat (302), and the inner wall of the hinge seat (302) is connected to the other end of the umbrella rib (203) by a pin. The number of umbrella ribs (203) is the same as the number of sealing arcs (301).

5. The novel water-finding instrument for horizontal wells in oilfields according to claim 4, characterized in that, The push-out protective mechanism (4) includes a protective box (401), a primary extension box (409), and a secondary extension box (504). The primary extension box (409) is slidably disposed in the protective box (401), the secondary extension box (504) is slidably disposed in the primary extension box (409), and the water sensor is disposed in the secondary extension box (504).

6. The novel water-finding instrument for horizontal wells in oilfields according to claim 5, characterized in that, The upper end of the protective box (401) is connected and fixed to the limiting plate (201); The upper wall of the protective box (401) is provided with a square cavity (402) and a machine cavity (403); A worm gear (406) is rotatably connected to the square cavity (402) via a rotating shaft. A motor (404) is installed in the machine cavity (403). The output shaft of the motor (404) extends through the inner wall of the machine cavity (403) into the square cavity (402) and is fixedly connected to a worm (405). The worm gear (406) meshes with the worm (405). The protective box (401) is rotatably connected to a lead screw (407). The upper end of the lead screw (407) passes through the inner wall of the protective box (401) and extends into the square cavity (402), where it is connected and fixed to the worm gear (406). The lead screw (407) is threadedly connected to the first-stage extension box (409) to drive the first-stage extension box (409) to move relative to the protective box (401).

7. A novel water-finding instrument for horizontal wells in oilfields according to claim 6, characterized in that, The inner wall of the protective box (401) is provided with a second trapezoidal groove (408), and the outer wall of the first-stage extension box (409) is fixedly provided with a second trapezoidal block (4010). The second trapezoidal groove (408) and the second trapezoidal block (4010) are slidably connected. A baffle (4011) is fixedly provided on the top of the first-stage extension box (409), and a threaded hole (4012) is provided in the middle of the baffle (4011), which is threadedly connected to the lead screw (407).

8. A novel water-finding instrument for horizontal wells in oilfields according to claim 7, characterized in that, The first-stage extension box (409) has two square slots (5) on both sides in a symmetrical structure. The two square slots (5) are located at the upper and lower parts of the first-stage extension box (409) respectively. The square slots (5) are rotatably connected to sprockets (501) through a rotating shaft. The two sprockets (501) on the same side are provided with chains (502) on their outer sides. The chains (502) are meshed with the sprockets (501). The part of the chain (502) located outside the first-stage extension box (409) is fixedly provided with a first fixing block (5011). The first fixing block (5011) is connected and fixed to the inner wall of the protective box (401).

9. A novel water-finding instrument for horizontal wells in oilfields according to claim 8, characterized in that, The inner wall of the first-stage extension box (409) is provided with a third trapezoidal groove (503). The outer side of the second-stage extension box (504) is fixedly connected with a third trapezoidal block (506). The third trapezoidal block (506) is slidably connected to the third trapezoidal groove (503). The outer wall of the second-stage extension box (504) is fixedly connected with a second fixing block (505). The second fixing block (505) is connected and fixed to the chain (502).

10. A novel water-finding instrument for horizontal wells in oilfields according to claim 6, characterized in that, The lower end of the protective box (401) is connected to a door (507) via a hinge. A spring (508) is provided on the inner side of the door (507). Hooks (509) are hung on both the upper and lower ends of the spring (508). The spring (508) is set in an inclined structure. The hooks (509) are divided into upper hooks and lower hooks. The upper hook is engaged with the inner wall of the protective box (401), and the lower hook is engaged with the door (507).

11. A novel water-finding instrument for horizontal wells in oilfields according to claim 10, characterized in that, A pump body is embedded inside the inserted column (1); The pump body input end is connected to the cavity formed by multiple sealing arcs (301) through a first hose, and the pump body output end is connected to the outside through a second hose.

12. A novel water-finding instrument for horizontal wells in oilfields according to claim 11, characterized in that, The telescopic rod (204), motor (404), water sensor, and pump body are connected to the controller through wiring holes. The controller is located outside the well and can control the start and stop of the telescopic rod (204), motor (404), and pump body, and can receive signal data from the water sensor.

13. A novel water-finding instrument for horizontal wells in oilfields according to claim 2, characterized in that, A sealing rubber (303) is fixedly provided on the outer wall at the edge of the sealing arc (301).

14. A novel water-finding instrument for horizontal wells in oilfields according to claim 10, characterized in that, Both the protective box (401) and the barrier door (507) are fixedly connected with a ring (5010). The ring (5010) is divided into an upper hanging ring and a lower hanging ring. The upper hanging ring is fixedly connected to the protective box (401) and is engaged with the upper hook. The lower hanging ring is fixedly connected to the barrier door (507) and is engaged with the lower hook.

15. A method for using a new type of water-finding instrument for horizontal wells in oilfields, characterized in that, The method of using a novel water-finding instrument for oilfield horizontal wells as described in any one of claims 1-14 includes the following steps: S1. Steps for using a combined horizontal well water finding instrument; S2. Steps for lowering a water-finding instrument into a horizontal well; S3. Steps to remove the seal; S4. Steps to extend the water sensor; S5. Steps for retrieving and sealing the water sensor; S6. Vacuuming and corrosion prevention steps.

16. The method of using a novel water-finding instrument for horizontal wells in oilfields according to claim 15, characterized in that, The specific steps are as follows: S1. Combined horizontal well water finding instrument: Assemble a new type of horizontal well water finding instrument for oilfields, so that the secondary extension box (504) is stored in the primary extension box (409), and the primary extension box (409) is stored in the protective box (401), the stop door (507) is in the closed state, and the sealing structure (3) is in the retracted state; set the initial position of the limiting plate (201), if the limiting plate (201) is above the hinge seat (302), the telescopic rod (204) is pushed outward to release the seal, and if the limiting plate (201) is below the hinge seat (302), the telescopic rod (204) is pulled inward to release the seal; S2. Lower the tubing string and insert the extension string (1) into the oil well to reach the required water-finding position; S3. Release the seal. Drive the telescopic rod (204) to extend or retract via the controller, so that the umbrella rib (203) can be pulled inward or pushed outward, so that the sealing arc (301) moves along the first trapezoidal groove (102), opening the sealing arc (301) and exposing the equipment inside; when the seal is released by pushing outward, the protective box (401) will be pushed forward; when the seal is released by pulling inward, the protective box (401) will retract. S4. Extend the water sensor. The controller drives the output shaft of the motor (404) to rotate, which drives the worm gear (406) to rotate, causing the lead screw (407) to rotate, thereby driving the first-stage extension box (409) to move outward. The movement of the first-stage extension box (409) causes the chain (502) to shift, driving the second-stage extension box (504) to extend, thereby exposing the sensor to the outside for operation. S5. Retract and seal the water sensor. When the water search is completed or it is necessary to continue to search for water, the reverse operation is performed to retract the sensor. The controller drives the motor (404) to rotate in the opposite direction, causing the secondary extension box (504) and the primary extension box (409) to retract. After retracting into the protective box (401), the spring (508) closes the door (507) to protect the sensor. The controller drives the telescopic rod (204) to extend and retract, so that the umbrella rib (203) returns to the initial state, and drives the sealing structure (3) back to the sealed state. S6. Evacuation and corrosion prevention: The pump body is operated by the controller to output the liquid inside the sealed structure (3).

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