WO2014190707A1

WO2014190707A1 - System for injecting and retrieving cable

Info

Publication number: WO2014190707A1
Application number: PCT/CN2013/088562
Authority: WO
Inventors: 张弭; 姚宇翔; 单代伟; 夏宏克; 胡晓君; 钟萍萍; 张波
Original assignee: 四川宏华石油设备有限公司
Priority date: 2013-05-28
Filing date: 2013-12-05
Publication date: 2014-12-04
Also published as: CN103247975A; CN103247975B

Abstract

A system for injecting and retrieving a cable, comprising a cable reel (1) and a coiled tubing reel (2), wherein a cable (3) is provided on the cable reel, and coiled tubing (4) is coiled on the coiled tubing reel; and an injection device (5) is arranged between the cable reel and the coiled tubing reel, an injection chamber is arranged inside the injection device. The injection chamber is provided with a cable lead-out port (6), a cable injection port (7) and a fluid inlet (8) which are in communication with the outside; and the cable lead-out port is provided with a connector (9), and an abutting end of the coiled tubing is in communication with the injection chamber via the connector. The system for injecting and retrieving a cable can realize the injection and the retrieval of a cable without the need to let out the coiled tubing from the coiled tubing reel and flattening same; and a pressure consumption tube (26) and an overflow tube (28) are adopted in the injection device, which greatly reduces the frictional resistance force between a seal ring in a sealed tube (27) and the surface of the cable, so that the cable can be fed in and pulled out with a small feeding-in force and pulling-out force. The system for injecting and retrieving a cable has a simple structure and is convenient to operate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of oil drilling equipment, and more particularly to a cable injection recovery system in which a coiled tubing can be injected into a cable without flattening. BACKGROUND OF THE INVENTION With the continuous development of continuous tube related technologies, continuous tubes and related equipment have been increasingly applied to drilling and logging of horizontal wells and directional wells, since the continuous tubes are continuous sections of thin-walled tubes, Conventional drill pipe, in the process of operation, does not need to be connected to the joint, which constitutes a continuous channel connecting the ground equipment and the downhole tool. Therefore, the electric power drilling and logging is carried out by constructing the underground power and signal channel by penetrating the cable in the continuous pipe. It has higher feasibility and better advantages than electric drilling and logging under conventional drill pipe. In the prior art, in order to penetrate a cable into a continuous pipe, the cable is often injected into the continuous pipe from the cable drum in the following two ways, or the cable is retracted from the continuous pipe on the drum to the cable drum. One is to completely discharge the continuous pipe from the reel, into a well that has been hit, and then use gravity to insert the cable into the continuous pipe; the other is to flatten the continuous pipe to the ground, forming a very Long straight pipe, using the principle of crawling mechanism or hydraulic cylinder piston rod to insert the cable into the continuous pipe. The disadvantages of the above two methods are: In both ways, the continuous pipe must be discharged from the reel to form a straight After the pipe, the cable is injected using a crawling mechanism or a piston-like mechanism, and the cable cannot be directly injected into the continuous pipe wound around the reel. Due to such limitation, the actual operation is very inconvenient and requires a large amount of manpower and material resources. At the same time, it also has an impact on the life of the continuous tube. Summary of the invention SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-discussed deficiencies of the prior art and to provide a cable injection recovery system capable of injecting a cable into a continuous tube while the continuous tube is being held in a roll. In order to achieve the above object, the present invention provides the following technical solutions: A cable injection recovery system includes a cable reel and a continuous tube reel, the cable reel is provided with a cable, and the continuous tube reel is wound There is a continuous tube, an injection device is disposed between the cable reel and the continuous tube reel, and an injection chamber is disposed inside the injection device, and the injection chamber is provided with a cable outlet, a cable injection port and a fluid connected to the outside The cable outlet is provided with a connector, and the butt end of the continuous pipe communicates with the injection cavity through the connector; the cable is inserted into the injection cavity through the cable injection port, and the front end of the cable passes through the cable outlet Extending into the interior of the continuous tube; a three-way valve is disposed between the cable outlet and the cable injection port, the first branch of the three-way valve is connected to the cable outlet, and the second branch of the three-way valve and the cable inlet The third branch of the three-way valve is connected to the pumping device through a fluid inlet, and the angle between the third branch and the first branch is greater than 90°. Preferably, the pumping device comprises a drilling pump, and the inlet end of the drilling pump is provided with a suction manifold, and the suction pipe connects the water inlet end of the drilling pump to the water storage tank, and the water of the drilling pump An injection manifold is disposed between the end and the third branch of the three-way valve, and a return manifold is disposed between the end of the continuous tube and the water storage tank. Preferably, an side of the injection chamber near the cable injection port is provided with an overflow pipe sink, and the overflow pipe meets the injection cavity and the water storage tank. Preferably, a cable pulling mechanism is disposed between the cable reel and the cable injection port, the cable pulling mechanism includes a base, and the base is coupled with a driving wheel assembly and a driven wheel assembly, the driving wheel assembly and The gap between the driven wheel assemblies is an annular traction channel, and the cable is threaded into the annular traction channel. With such a structure, a frictional thrust is applied to the cable sandwiched therein through the annular traction passage, thereby generating a traction force on the cable surface in the tangential direction of the circumference of the drive pulley, overcoming the resistance of the cable when moving in the injection device, and continuously It is fed into the injection device, and the cable is driven to move smoothly to the cable outlet. Preferably, the driving wheel assembly comprises a driving wheel frame and a driving pulley connected to the driving wheel frame via a rotating shaft, the driving wheel frame is fixedly connected with the base, the driven wheel assembly comprises a driven wheel frame, and passes through a rotating pulley connected to the driven pulley on the driven wheel carrier; a pin shaft disposed between the driving wheel carrier and the driven wheel carrier, the driving wheel carrier and the driven wheel carrier being connected by a hinge on one side, the driving wheel frame and the slave The movable wheel frame is connected on the other side by a pressing bolt set and a self-locking nut, one end of the pressing bolt set is connected to the driving wheel frame, and the other end of the pressing bolt set is sleeved with a self-locking nut, the slave The moving wheel frame is connected to the pressing bolt set by a self-locking nut. With such a structure, the relative position of the driving pulley and the driven pulley can be adjusted, so that the pressing force can be controlled within a certain range, thereby improving the reliability of the cable pulling motion, and facilitating the continuous feeding of the cable into the injection device. In addition, it is convenient to adjust the pressing force according to the actual situation, to avoid excessive pressure damage to the cable, or insufficient pressing force. Preferably, the hinge of the hinge is a pin sensor. With such a structure, the pin sensor is used as a rotating shaft of the hinge, and functions to detect the pressure between the driving wheel frame and the driven wheel frame in real time, and the pressing force applied to the surface of the cable can be converted at any time, so that the pressing force is pressed. The force can be controlled within a certain range to help protect the cable. Preferably, the driving pulley and the driven pulley are both composed of a steel inner ring and a rubber outer ring. Since the rubber outer ring on the driving pulley and the driven pulley has a certain elasticity compared with the metal outer ring, and can increase the friction coefficient with the cable surface, the pressing force applied to the cable surface can provide sufficient pressure when pressed against the cable surface. The frictional force, and the deformation of the rubber increases the contact area with the cable surface, reducing the damage to the cable. Preferably, the cable traction mechanism further includes a closed channel, the closed channel includes a guide wheel, and a limit bar disposed above the guide wheel, and a gap between the limit bar and the guide wheel is greater than a single The diameter of the cable and less than the sum of the diameters of the two cables. With such a structure, a closed passage for a single cable is formed on the side of the injection device near the cable hoist, so that when the cable moves left and right on the cable hoist, the cable segment after the closed passage formed by the guide wheel and the shift lever The center can always maintain a basic coincidence with the center of the annular traction channel formed by the drive pulley and the driven pulley, further protecting the cable and the reliability of cable traction. Preferably, a counting sensor is disposed on a driving shaft of the cable drum. With such a mechanism, a counter mounted on the drive shaft can be recorded and converted to obtain the injection length of the cable. Preferably, the cable injection port of the injection device and the second branch pipe of the three-way valve are connected by a pressure-consuming tube, and the inner diameter of the pressure-consuming tube is larger than the diameter of the cable by 1 mm to 2 mm.

Compared with the prior art, the invention has the beneficial effects that: the cable injection and recovery system does not need to release the continuous tube from the continuous tube reel, thereby realizing the injection and recovery of the cable, and in the injection device. The consumption tube and the overflow tube are adopted, so that the frictional resistance between the sealing ring and the cable surface in the sealing tube is greatly reduced, so that the feeding and pulling out of the cable can be realized with a small feeding and pulling force, and the structure is simple and the operation is convenient. . BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an injection condition of a cable injection and recovery system of the present invention; FIG. 2 is a schematic view of a continuous tube and a mother of the present invention; FIG. 4 is a perspective structural view of the injection device in the cable injection and recovery system of the present invention; FIG. 5 is a perspective view of the perspective structure of FIG. 4; FIG. 6 is a side view of the end structure of FIG. Schematic diagram of connection. Marked in the figure: cable reel one 1; continuous tube reel one 2; cable one 3; continuous tube one 4; injection device one 5; cable outlet one 6; cable injection port one 7; fluid inlet one 8; A 9; a three-way valve - 10; a first pipe - 10a; a second pipe - 10b; a third pipe - 10c; a drilling pump 11; a suction pipe sink 12; a water storage tank 13; Return pipe sink 1 15; overflow pipe sink 1 16; cable traction mechanism 17; base 18; drive wheel assembly 19; drive wheel frame 19a; drive pulley 19b; driven wheel assembly 20; 20a; driven pulley 20b; annular traction channel 21; pin shaft 22; compression bolt set one 23; self-locking nut one 24; closed channel one 25; guide wheel one 25a; limit bar one 25b; Tube one 26; sealed tube one 27; overflow tube one 28. BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be further described in detail below in conjunction with the test examples and specific embodiments. However, the scope of the above-mentioned subject matter of the present invention should not be construed as being limited to the following embodiments, and the technology implemented based on the present invention is within the scope of the present invention.

Example 1

As shown in FIG. 1 to FIG. 7, a cable injection and recovery system of the present embodiment includes a cable reel 1 and a continuous tube reel 2, and a drive shaft of the cable reel 1 is connected with a cable 3 hoist, and the cable reel 1 is disposed. There is a cable 3, a continuous tube 4 is wound on the continuous tube reel 2, and an injection device 5 is arranged between the cable reel 1 and the continuous tube reel 2, the injection device 5 is tubular, and an injection chamber is arranged inside the injection device 5, Injection chamber setting There are a cable outlet 6 connected to the outside, a cable injection port 7 and a fluid inlet 8; a cable outlet 6 and a cable injection port 7 are provided at both ends of the injection device 5, and a fluid inlet 8 is provided at the side wall of the injection device 5. And the opening on the inner side of the injection device 5 faces the cable outlet 6, and the cable outlet 6 is provided with a connector 9. In this embodiment, the connector 9 is a female connector for sealing the continuous pipe 4, and the remaining implementation In the manner, a sealing joint of other structure may also be used, and the butt end of the continuous pipe 4 is connected to the injection cavity through the joint 9; the cable 3 is inserted into the injection cavity by the cable injection port 7, and the cable 3 is before the injection work starts. The front end of the cable extends through the cable outlet 6 to a predetermined distance inside the continuous pipe 4 to ensure that the cable can be injected into the continuous pipe 4 under the action of the thrust;

A three-way valve 10 is disposed between the cable outlet 6 and the cable injection port 7, the first branch 10a of the three-way valve 10 is connected to the cable outlet 6, and the second branch 10b of the three-way valve 10 is connected to the cable injection port 7, The third branch pipe 10c of the three-way valve 10 is connected to the pumping device through the fluid inlet 8, and the angle between the third branch pipe 10c and the first branch pipe 10a is greater than 90 °, that is, most of the liquid injected by the third branch pipe 10c faces the cable outlet. 6 launched.

In order to ensure that the cable 3 can be smoothly injected into the continuous pipe 4, a floating head is provided at the end of the cable 3, and the radial width of the floating head is larger than the diameter of the cable 3. With such a structure, the fluid pushes the floating head, thereby making it smoother. The cable 3 is moved forward, and the cable 3 can be pushed into the continuous pipe 4 more smoothly under the action of the thrust of the floating head.

The working principle of this embodiment is as follows: a high-speed fluid (generally clean water) is pumped into the continuous pipe 4 by means of a pumping device (such as a drilling pump 11) to wash the surface of the cable 3, due to the speed difference between the high-speed fluid and the surface of the cable 3, The surface of the cable 3 produces a viscous frictional force in the direction of travel of the high velocity fluid which is sufficient to overcome the movement of the cable 3 in the continuous tube 4 when the speed difference between the surface of the cable 3 and the continuous tube 4 is sufficiently large. The resistance received during the operation causes the cable 3 to continuously travel in the continuous tube 4 and continues to be injected by the pumping device to compensate for the loss of resistance of the high speed fluid as it passes through the continuous tube 4. Example 2

As shown in FIG. 1 to FIG. 7, in the present embodiment, the pumping device includes a drilling pump 11, and the inlet end of the drilling pump 11 is provided with a suction manifold 12, and the suction manifold 12 connects the inlet end of the drilling pump 11 with The water storage tanks 13 are connected, and an injection manifold 14 is disposed between the water outlet end of the drilling pump 11 and the third branch pipe 10c of the three-way valve 10, and a return manifold 15 is disposed between the end of the continuous pipe 4 and the water storage tank 13. The suction pipe 12, the injection pipe 14 and the return pipe 15 constitute a circulation passage for water storage and water injection, which is beneficial to avoid fluid waste and has the beneficial effects of energy saving and environmental protection.

Please refer to Example 1 for the rest of the structure.

Example 3

As shown in FIGS. 1 to 7, in the present embodiment, although most of the fluid returns to the water storage tank 13 along the circulation passage formed by the continuous pipe 4, in order to avoid high pressure backlash of the high pressure liquid at the cable injection port 7, An overflow manifold 16 is disposed on a side of the injection chamber adjacent to the cable injection port 7, and the overflow manifold 16 communicates the injection chamber with the water storage tank 13 so that the fluid flowing back to the cable injection port 7 can be retracted along the overflow pipe. Return to the water storage tank 13.

In order to further ensure the connection strength of the cable injection port 7, the overflow pipe 28 and the cable injection port 7 are connected by a sealing pipe 27, and the inner wall of the sealing pipe 27 is provided with an annular sealing ring, the sealing pipe 27 and the cable 3 inlet. The overflow tube 28 is screwed such that the annular sealing ring in the sealing tube 27 deforms and compresses the outer surface of the cable 3 to seal the fluid.

In order to prevent the pressure at the cable injection port 7 from being too high and affecting the connection strength, the cable injection port 7 of the injection device 5 and the second branch pipe 10b of the three-way valve 10 communicate with each other through the pressure pipe 26, and the inner diameter of the pressure pipe 26 is exhausted. Larger than the diameter of cable 3 lmn! ~ 2mm, the function of the pressure consuming tube is to reduce the pressure of the fluid along the stroke, and the pressure and pressure relief of the fluid through the pressure consuming tube 26, so that the fluid pressure on the side of the sealing tube 27 is very low, the sealing tube 27 and the overflow tube 28 The connecting thread can be achieved by simply maintaining a proper tightness. Therefore, the cable injection port 7 of the injection device 5 has a suitable feeding force against the frictional resistance of the annular seal ring and the surface of the cable 3 in the sealing tube 27 and the frictional resistance generated on the surface of the cable 3 when the fluid flows in the above-mentioned annular gap. The cable 3 can be fed into the injection device 5, and the cable 3 has been passed through the three-way valve 10 into the continuous pipe 4, and the traction power is generated by the high-speed fluid flushing.

Please refer to Example 2 for the rest of the structure.

Example 4

As shown in FIG. 3 to FIG. 6, in this embodiment, in order to smoothly feed the cable 3, a cable pulling mechanism 17 is disposed between the cable reel 1 and the cable injection port 7, and the cable pulling mechanism 17 includes a base 18, and the base 18 The drive wheel assembly 19 and the driven wheel assembly 20 are coupled, and the gap between the drive wheel assembly 19 and the driven wheel assembly 20 is an annular traction passage 21 through which the cable 3 is passed through the annular traction passage 21 21 applies a frictional frictional force to the cable 3 interposed therebetween, thereby generating a traction force on the surface of the cable 3 in the tangential direction of the circumference of the driving pulley 19b, overcoming the resistance of the cable 3 in the movement of the injection device 5, and continuously feeding the cable 3 In the injection device 5, the cable 3 is driven to move smoothly to the cable outlet 6.

Therefore, the cable injection port 7 of the injection device 5 generates an appropriate feeding force through the cable pulling mechanism 17 to overcome the frictional resistance of the annular seal ring and the surface of the cable 3 in the sealing tube 27 and the surface of the cable 3 when the fluid flows in the above-mentioned annular gap. The resulting frictional resistance allows the cable 3 to be fed into the injection device 5 and has passed through the three-way valve 10 into the cable section 3 of the continuous tube 4, the traction power being generated by the high velocity fluid flushing.

The drive wheel assembly 19 includes a drive wheel carrier 19a and a drive pulley 19b coupled to the drive wheel carrier 19a via a rotating shaft. The drive wheel carrier 19a is fixedly coupled to the base 18, and the driven wheel assembly 20 includes a driven wheel carrier. 20a, and a driven pulley 20b connected to the driven carrier 20a via a rotating shaft; a pin 22 is disposed between the driving carrier 19a and the driven carrier 20a, and the driving carrier 19a and the driven carrier 20a are hinged at one side, The drive wheel carrier 19a and the driven wheel carrier 20a are connected on the other side by the pressing bolt set 23 and the self-locking nut 24, and one end of the pressing bolt group 23 is connected to the driving wheel frame 19a, and the other end of the pressing bolt group 23 is sleeved. There is a self-locking nut 24, and the driven wheel carrier 20a is connected to the pressing bolt group 23 through the self-locking nut 24. With such a structure, the pressing force can be controlled by adjusting the relative positions of the driving pulley 19b and the driven pulley 20b. Within a certain appropriate range, the reliability of the traction movement of the cable 3 is improved, and the cable 3 is continuously fed into the injection device 5, and the pressing force can be conveniently adjusted according to actual conditions to avoid excessive pressure damage. Cable 3, or insufficient pressing force.

The driving pulley 19b and the driven pulley 20b are both composed of a steel inner ring and a rubber outer ring, since the rubber outer ring on the driving pulley 19b and the driven pulley 20b has a certain elasticity compared to the metal outer ring, and can be enlarged with the surface of the cable 3. The coefficient of friction, when pressed against the surface of the cable 3, the pressing force applied to the surface of the cable 3 provides sufficient friction and increases the contact area with the surface of the cable 3 by the deformation of the rubber, thereby reducing the damage to the cable 3.

In order to precisely control the pressure acting on the cable 3, the hinge of the hinge is the pin 22 sensor, and the pin 22 sensor serves as the hinge of the hinge, and functions to detect the pressure between the drive carrier 19a and the driven carrier 20a in real time. The pressing force applied to the surface of the cable 3 can be converted at any time, so that the pressing force can be controlled within a certain range, which is advantageous for protecting the cable 3.

The cable traction mechanism 17 further includes a closed passage 25 including a guide wheel 25a and a limit lever 25b disposed above the guide wheel 25a. The gap between the limit lever 25b and the guide wheel 25a is larger than a single cable. The diameter of 3, and the sum of the diameters of the two cables 3, with such a structure, a closed passage 25 for the passage of a single cable 3 is formed on the side of the injection device 5 near the hoist of the cable 3, so that the cable 3 is on the cable 3 When the hoist moves left and right, it is formed by the guide wheel 25a and the lever The center of the cable 3 section behind the closed passage 25 can always substantially coincide with the center of the annular traction passage 21 formed by the drive pulley 19b and the driven pulley 20b, further enter the protection cable 3, and the reliability of the cable 3 traction motion.

The drive shaft of the cable reel 1 is provided with a counting sensor. With such a mechanism, a counter mounted on the drive shaft can record and convert the injection length of the cable 3 to provide the operator with the pressure applied to the cable 3 as needed. Make adjustments and take a look at the protective cable 3.

See Example 3 for the rest of the structure.

When the cable 3 is in the working condition, the cable 3 is first discharged from the cable 3 hoisting machine for a suitable length, and passes through the cable pulling mechanism 17, the sealing pipe 27, the overflow pipe 28, the pressure pipe, and the transfer. The annular passage formed by the short section and the three-way valve 10 enters the inside of the continuous pipe 4, and the length of the cable 3 extending into the continuous pipe 4 is several meters, the drilling pump 11 is started, and the injection pipe 14 is injected into the injection device 5 The three-way valve 10 pumps the high-speed fluid, starts the cable 3 hoist, releases the cable 3 outward, and then starts the cable pulling mechanism 17, applies a certain feeding force on the surface of the cable 3 to overcome the above frictional resistance, and continuously sends the cable to the string. Into the cable 3, the incoming cable 3 is advanced in the direction of fluid travel under the traction of the viscous friction generated by the high velocity fluid. At this time, the inlet of the high-speed fluid is at the three-way valve 10, and most of the fluid is returned to the water storage via the passage formed by the injection manifold 14-three-way valve 10-continuous tube 4-continuous tube reel 2-return manifold 15. The tank 13, a small part of the fluid is returned to the water storage tank 13 via the injection manifold 14-three-way-switching nipple-compression tube-overflow tube 28-overflow manifold 16, the water storage tank 13 Fluid enters the drilling pump 11 through the suction manifold 12, thereby forming a circulation of fluid.

When the cable is in the recovery condition of the cable 3, the injection condition is different from the injection condition, in which the inlet of the high-speed fluid is connected to the reel manifold on the continuous tube reel 2, that is, the pumping device is connected to the return manifold 15 . Most of the fluid is returned to the water storage tank 13 via the return line manifold 15-continuous tube reel 2-continuous tube 4-three-way valve 10-injection manifold 14 and a small portion of the fluid is passed through the return line-continuous tube reel 2-continuous tube 4-three-way valve The door 10 - the consumption pipe - the overflow pipe 28 - the passage formed by the overflow pipe 16 is returned to the water storage tank 13. At the time of recovery, the drilling pump 11 is started, and the high-speed fluid is pumped through the injection manifold 14 to the return manifold 15 of the continuous tube reel 2, and the cable 3 is advanced in the direction of fluid travel under the traction of the viscous friction generated by the high-speed fluid, starting The cable pulling mechanism 17 pulls the cable 3 out of the string, activates the cable 3 hoist, and retracts the cable 3 to the cable 3 hoist.

The cable pulling mechanism 17 herein is not limited to the specific form given herein, the purpose of which is to inject the cable 3 to provide a feeding force for the cable 3 against the frictional resistance of the string; to provide a tensile force to overcome the string when the cable 3 is recovered The frictional resistance of the segment pulls the cable 3 out. The functions of the cable pulling mechanism 17 can be realized by the human and the liquid cylinder clamping push and pull, and will not be described here.

The above embodiment provides a cable 3 injection and recovery system, which does not require the continuous tube 4 to be released from the continuous tube reel 2, thereby enabling the injection and recovery of the cable 3, and the pressure is applied in the injection device 5. The consumption pipe and the overflow pipe 28 greatly reduce the frictional resistance of the sealing ring and the surface of the cable 3 in the sealing pipe 27, so that the feeding and pulling out of the cable 3 can be realized with a small feeding and pulling force, and the structure is simple. Easy to operate.

Claims

claims

1. A cable injection and recovery system, including a cable reel and a coiled tube reel, the cable reel is provided with a cable, and the coiled tube reel is coiled with a coiled tube, characterized by: the cable reel An injection device is provided between the drum and the coiled tube reel. An injection chamber is provided inside the injection device. The injection chamber is provided with a cable outlet, a cable injection port and a fluid inlet that are connected to the outside; the cable guide The outlet is provided with a connector, and the butt end of the continuous tube is connected to the injection cavity through the connector; the cable is connected to the injection cavity through the cable injection port, and the front end of the cable passes through the injection cavity. The cable outlet extends into the coiled pipe; a three-way valve is provided between the cable outlet and the cable injection port, and the first branch of the three-way valve is connected to the cable outlet, so The second branch pipe of the three-way valve is connected to the cable injection inlet, the third branch pipe of the three-way valve is connected to the pumping device through the fluid inlet, and the angle between the third branch pipe and the first branch pipe is greater than 90°.

2. The cable injection recovery system according to claim 1, characterized in that: the pumping device includes a drilling pump, the water inlet end of the drilling pump is provided with a suction manifold, and the suction manifold connects the drilling well The water inlet end of the pump is connected to the water storage tank. An injection manifold is provided between the water outlet end of the drilling pump and the third branch pipe of the three-way valve. There is an injection manifold between the end of the continuous pipe and the water storage tank. A return manifold is provided.

3. The cable injection and recovery system according to claim 2, characterized in that: an overflow manifold is provided on one side of the injection chamber close to the cable injection port, and the overflow manifold connects the injection chamber and The water storage tank is connected.

4. The cable injection and recovery system according to claim 3, characterized in that: a cable traction mechanism is provided between the cable reel and the cable injection port, the cable traction mechanism includes a base, and the base is connected to The driving wheel assembly and the driven wheel assembly, the gap between the driving wheel assembly and the driven wheel assembly is an annular traction channel, and the cable is threaded in the annular traction channel.

5. The cable injection and recovery system according to claim 4, characterized in that: the driving wheel assembly includes a driving wheel frame, and a driving pulley connected to the driving wheel frame through a rotating shaft, the driving wheel assembly Claim that the book wheel frame is fixedly connected to the base, the driven wheel assembly includes a driven wheel frame, and a driven pulley connected to the driven wheel frame through a rotating shaft; the driving wheel frame and the driven wheel frame are There is a pin shaft between them, the driving wheel frame and the driven wheel frame are connected by a hinge on one side, and the driving wheel frame and the driven wheel frame are connected by a compression bolt set and a self-locking nut on the other side, One end of the compression bolt group is connected to the driving wheel frame, the other end of the compression bolt group is sleeved with the self-locking nut, and the driven wheel frame is connected to the compression wheel frame through the self-locking nut. Bolt set connection.

6. The cable injection and recovery system according to claim 5, characterized in that: the rotating shaft of the hinge is a pin sensor.

7. The cable injection and recovery system according to claim 5, characterized in that: the driving pulley and the driven pulley are composed of a steel inner ring and a rubber outer ring.

8. The cable injection and recovery system according to any one of claims 4 to 7, characterized in that: the cable traction mechanism further includes a closed channel, the closed channel includes a guide wheel, and is disposed above the guide wheel. The gap between the limit stop rod and the guide wheel is larger than the diameter of a single cable and smaller than the sum of the diameters of the two cables.

9. The cable injection and recovery system according to any one of claims 4 to 7, characterized in that: a counting sensor is provided on the driving shaft of the cable drum.

10. The cable injection and recovery system according to any one of claims 4 to 7, characterized in that: the cable injection port of the injection device and the second branch pipe of the three-way valve are connected through a pressure consumption pipe, so The inner diameter of the pressure-consuming pipe is larger than the diameter of the cable lmn! ~2mm.