CN111980608A - Fetching and delivering device of oil pipe plugging valve and replacing method of wellhead component - Google Patents

Abstract

The invention provides a fetching and delivering device of an oil pipe plugging valve and a replacing method of wellhead components, wherein the fetching and delivering device of the oil pipe plugging valve comprises a connecting rod; the connecting rod can be connected with a central pipe of the oil pipe plugging valve and used for driving the central pipe to rotate and lifting the oil pipe plugging valve through the central pipe; be provided with joint portion on the outer wall of connecting rod to make the connecting rod can pass through joint portion joint on external environment part. The invention has the advantages of reasonable design and simple operation, can prevent blowout during oil testing, and can prevent the oil pipe from blocking the valve and falling off, thereby reducing the safety risk of well control and ensuring the aging of oil testing.

Description

Fetching and delivering device of oil pipe plugging valve and replacing method of wellhead component

Technical Field

The invention relates to the technical field of petroleum and natural gas exploitation, in particular to a fetching and delivering device of an oil pipe plugging valve and a method for replacing a wellhead component.

Background

In the process of oil or natural gas exploitation, due to the particularity of the oil testing process, frequent wellhead replacing operation occurs during oil testing, the wellhead is in an open state during wellhead replacing, once blowout occurs, no means is available for controlling the blowout, and the wellhead replacing operation becomes the largest potential safety hazard during oil testing.

Chinese patent CN201460800U discloses a recoverable oil pipe plugging valve can realize blowout prevention in an oil pipe and provide temporary well control measures, but in the fetching and delivering process of the oil pipe plugging valve, there is a risk of falling into a well, which results in fishing operation, repeated wellhead replacement and repeated string tripping, and on the contrary, increases the safety risk of well control, labor intensity and oil testing time efficiency.

Disclosure of Invention

The invention aims to provide a fetching and delivering device of an oil pipe plugging valve and a replacing method of wellhead components, which can prevent the oil pipe plugging valve from falling off in the fetching and delivering process, thereby reducing the well control safety risk and ensuring the oil testing timeliness.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a fetching and delivering device of an oil pipe blocking valve comprises a connecting rod;

the connecting rod can be connected with a central pipe of the oil pipe plugging valve and used for driving the central pipe to rotate and pulling the oil pipe plugging valve through the central pipe;

be provided with joint portion on the outer wall of connecting rod, so that the connecting rod can pass through joint portion joint is on external environment part.

Preferably, the device also comprises a sleeve, a telescopic shaft and a positioning component;

the connecting rod is fixedly connected with the sleeve, the axes of the connecting rod and the sleeve are overlapped, and one end of the sleeve, far away from the connecting rod, is provided with an opening;

the telescopic shaft comprises a sliding part and a connecting part which are fixed together, the sliding part is positioned in the sleeve, the connecting part extends out of the opening of the sleeve and can be connected with a central pipe of the oil pipe plugging valve, and the sliding part can slide in the sleeve along the axial direction of the sleeve so as to change the distance between the connecting part and the opening;

the positioning member can fix the sliding portion within the sleeve when the sliding portion moves to a target position within the sleeve.

Preferably, the positioning member is a screw;

the side wall of the sleeve is provided with a positioning screw hole matched with the screw, the screw is in threaded connection with the positioning screw hole, and abuts against the surface of the sliding part through screwing in the positioning screw hole, and the sliding part is pressed against the inner wall of the sleeve.

Preferably, the number of the positioning screw holes is more than two, and the more than two positioning screw holes are sequentially distributed at intervals along the axial direction of the sleeve.

Preferably, a flat key is also included;

the outer wall of the sliding part is provided with a first key groove matched with the flat key, the inner wall of the sleeve is provided with a second key groove matched with the flat key, and the flat key is located in the first key groove and the second key groove so as to enable the sliding part and the sleeve to be relatively positioned along the circumferential direction of the sleeve.

Preferably, the device also comprises a connecting joint;

the connecting joint is detachably connected to the connecting part, and external threads are arranged on the outer wall of the connecting joint

The oil pipe plug valve comprises a connecting cylinder detachably connected to the central pipe, an internal thread matched with an external thread on the outer wall of the outer connecting joint is arranged on the inner wall of the connecting cylinder, and the connecting joint can be in threaded connection with the inside of the connecting cylinder so as to connect the connecting part with the central pipe together.

Preferably, the device further comprises an extension rod;

the extension rod is provided with a clamping groove, one end, far away from the oil pipe plugging valve, of the connecting rod is provided with a clamping hook, and the clamping hook can be clamped in the clamping groove, so that the extension rod can be clamped and fixed at one end of the oil pipe plugging valve of the connecting rod.

A method for replacing well head parts is used for replacing a blowout preventer arranged at the well head of an oil well with a Christmas tree, and a taking and delivering device of an oil pipe plugging valve with any technical characteristics is used;

the method comprises the following steps:

s200, extending an oil pipe plugging valve into an oil pipe, and enabling the oil pipe plugging valve to plug an inner cavity of the oil pipe by rotating a central pipe of the oil pipe plugging valve;

s300, connecting the oil pipe and the oil pipe hanger together through a connecting part, wherein the connecting part is provided with a receiving channel which can communicate an inner cavity of the oil pipe with an inner hole of the oil pipe hanger;

s600, extending the connecting rod into an inner hole of the tubing hanger, enabling the connecting rod to penetrate through a receiving channel in the connecting component to enter an inner cavity of the tubing to be connected with a central tube of the tubing plugging valve, and enabling a clamping part on the connecting rod in the taking and delivering device to be clamped on one side, far away from the tubing, of the tubing hanger;

s700, extending the oil pipe into the oil well from the inner hole of the blowout preventer, and setting the oil pipe hanger on the wellhead of the oil well through the inner hole of the blowout preventer;

s800, detaching the blowout preventer from the wellhead of the oil well, and then installing the Christmas tree on the wellhead of the oil well;

s900, driving the central pipe of the oil pipe plugging valve to rotate through the taking and delivering device, enabling the oil pipe plugging valve to remove plugging of the inner cavity of the oil pipe, and then pulling the oil pipe plugging valve out of the inner hole of the Christmas tree through the taking and delivering device.

Preferably, the taking and delivering device comprises a sleeve, a telescopic shaft and a positioning component;

the connecting rod is fixedly connected with the sleeve, the axes of the connecting rod and the sleeve are overlapped, and one end of the sleeve, far away from the connecting rod, is provided with an opening;

the telescopic shaft comprises a sliding part and a connecting part which are fixed together, the sliding part is positioned in the sleeve, the connecting part is positioned outside the opening of the sleeve and is connected with a central pipe of the oil pipe plugging valve, and the sliding part can slide in the sleeve along the axial direction of the sleeve so as to change the distance between the connecting part and the opening;

the positioning member is capable of fixing the sliding portion within the sleeve when the sliding portion moves within the sleeve to a target position;

step S600 is preceded by step S500: the position of the sliding part in the sleeve is adjusted, and then the sliding part is fixed in the sleeve by the positioning component.

Preferably, the taking and delivering device further comprises a connecting joint;

the connecting joint is detachably connected to the connecting part, and external threads are arranged on the outer wall of the connecting joint

The oil pipe blocking valve comprises a connecting cylinder detachably connected to the central pipe, an inner thread matched with an outer thread on the outer wall of the external connecting joint is arranged on the inner wall of the connecting cylinder, and the connecting joint can be in threaded connection in the connecting cylinder so as to connect the connecting part and the central pipe together;

step S200 is preceded by step S100 of connecting the connector cartridge with the central tube;

step S400 is included before step S500, the connecting joint is fixedly connected to the connecting part;

in the step S600, the connecting rod is screwed to the connecting cylinder connected to the central tube through the connecting joint connected to the connecting portion.

A method of replacing a wellhead component for replacing a christmas tree arranged at a wellhead of an oil well with a blowout preventer, the christmas tree having a tubing hanger in an inner bore thereof at the wellhead of the oil well, the oil well having an oil tube therein connected to the tubing hanger by a connecting member, wherein the connecting member has an access passage capable of communicating an inner cavity of the oil tube with the inner bore of the tubing hanger, characterized by:

the taking and delivering device of the oil pipe plugging valve with any technical characteristics is used;

the method comprises the following steps:

s100', connecting a connecting rod in the receiving device with a central pipe of an oil pipe plugging valve;

s200', the connecting rod drives the oil pipe plugging valve to extend into an inner hole of the Christmas tree and sequentially pass through the inner hole of the oil pipe hanger, the receiving channel enters an inner cavity of the oil pipe, and the clamping part on the connecting rod is clamped on the oil pipe hanger;

s300', driving the central pipe to rotate through the connecting pipe, and enabling the oil pipe plugging valve to plug the inner cavity of the oil pipe;

s400', detaching the Christmas tree from the wellhead of the oil well, and then installing the blowout preventer on the wellhead of the oil well;

s500', the oil pipe plugging valve together with the oil pipe, the connecting component and the tubing hanger is pulled out of the inner hole of the blowout preventer through the connecting pipe.

According to the oil pipe plugging valve taking and delivering device, the clamping portion is arranged on the outer wall of the connecting rod, so that the connecting rod can be clamped on an external environment component through the clamping portion, the connecting rod can be prevented from falling off in the oil pipe plugging valve taking and delivering process, the well control safety risk is further reduced, and the oil testing timeliness is guaranteed.

Drawings

FIG. 1 is a schematic structural diagram of a pickup device of a tubing plugging valve according to an embodiment;

FIG. 2 is a schematic view of the connection state between the pickup device of the tubing plug valve and the tubing plug valve in FIG. 1;

FIG. 3 is a flow chart of a method for replacing a wellhead component according to a second embodiment;

fig. 4 is a flow chart of a wellhead component replacement method in the third embodiment.

In the figure: 1-a connecting rod; 11-a snap-in part; 12-a hook; 2-a sleeve; 21-opening; 22-positioning screw holes; 23-a second keyway; 3-a telescopic shaft; 31-a sliding part; 311-a first keyway; 32-a connecting portion; 4-oil pipe blocking valve; 41-a central tube; 42-a connecting cylinder; 5-a flat bond; 6-connecting the joint.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the following describes in detail the pickup device of the oil pipe plugging valve and the method for replacing wellhead components according to the present invention with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

As shown in fig. 1 and 2, the fetching and delivering device of the oil pipe plugging valve comprises a connecting rod 1. The connecting rod 1 can be connected with a central tube 41 of the tubing plugging valve 4 to drive the central tube 41 to rotate and lift the tubing plugging valve 4 through the central tube 41. The outer wall of the connecting rod 1 is provided with a clamping part 11, so that the connecting rod 1 can be clamped on an external environment component through the clamping part 11, wherein the environment component can be an oil pipe hanger which is set at the mouth of an oil well and is discharged. In practical manufacturing, the clamping portion 11 may be a circular protrusion extending coaxially with the connecting rod. When the connecting rod 1 drives the central pipe 41 to rotate, the oil pipe plugging valve 4 can plug or unblock the oil pipe. By adopting the technical scheme, in the process of taking and delivering the oil pipe plugging valve 4, the connecting rod can be clamped and fixed on an external environment component (such as an oil pipe hanger) through the clamping portion 11, so that the phenomenon that the oil pipe plugging valve 4 falls off and falls into an oil well in the working process is avoided, the well control safety risk is reduced, and the oil testing timeliness is ensured.

Further, as shown in fig. 1 and 2, the telescopic shaft further comprises a sleeve 2, a telescopic shaft 3 and a positioning component (not shown). The connecting rod 1 is fixedly connected with the sleeve 2, the axes of the connecting rod 1 and the sleeve 2 are overlapped, and one end of the sleeve 2, which is far away from the connecting rod 1, is provided with an opening 21. Wherein connecting rod 1 and sleeve 2 fixed connection can be any realizable connected mode such as key-type connection or welding, no matter which connected mode is adopted, must guarantee that connecting rod 1 can drive sleeve 2 and rotate, connecting rod 1 can transmit the moment of torsion to sleeve 2 promptly. The telescopic shaft 3 comprises a sliding part 31 and a connecting part 32 which are fixed together, the sliding part 31 is positioned in the sleeve 2, the connecting part 32 extends out of the opening 21 of the sleeve 2 and can be connected with a central pipe 41 of the oil pipe plugging valve 4, and the sliding part 31 can slide in the sleeve 2 along the axial direction of the sleeve 2 so as to change the distance between the connecting part 32 and the opening 21. When the sliding portion 31 moves to a target position within the sleeve 2, the positioning member can fix the sliding portion 31 within the sleeve 2. Adopt such technical scheme, can be through adjusting the distance between the position control connecting portion 32 and the opening 21 of sliding part 31 within sleeve 2, can be in order to adjust this whole length who connects the device according to the actual work needs, the best effect is when connecting portion 32 and center tube 41 are connected fixedly the back, joint portion 11 just the joint on external environment part, can avoid oil pipe choke valve 4 to appear when the tenesmus joint portion 11 causes the impact to environment part like this. It should be noted that when the positioning member fixes the sliding portion 31 in the sleeve 2, the connecting rod 1 can transmit torque to the connecting portion 32 through the sleeve 2 to rotate the central tube 41. In actual manufacturing, any mode capable of achieving the purpose of the present invention, such as clamping or threaded connection, may be adopted between the connecting portion 32 and the central tube 41, as long as torque can be transmitted therebetween.

In particular, the positioning member is a screw. As shown in fig. 1, a positioning screw hole 22 matching with a screw is provided on the side wall of the sleeve 2, the screw is screwed into the positioning screw hole 22, and abuts on the surface of the sliding portion 31 by screwing in the positioning screw hole 22, and the sliding portion 31 is pressed against the inner wall of the sleeve 2. Further, the number of the positioning screw holes 22 is two or more, and the two or more positioning screw holes 22 are sequentially arranged at intervals along the axial direction of the sleeve 2.

As an alternative embodiment, as shown in fig. 1, a flat key 5 is further included. A first key groove 311 matched with the flat key 5 is arranged on the outer wall of the sliding part 31, a second key groove 23 matched with the flat key 5 is arranged on the inner wall of the sleeve 2, and the flat key 5 is positioned in the first key groove 311 and the second key groove 23 so as to relatively position the sliding part 31 and the sleeve 2 along the circumferential direction of the sleeve 2. This ensures a reliable transmission of torque between the sleeve 2 and the telescopic shaft 3.

Further, as shown in fig. 1 and 2, the connecting joint 6 is also included. The connection fitting 6 is detachably connected to the connection portion 32. Any connection mode such as key connection or welding can be used between the connection joint 6 and the connection portion 32, and no matter which connection mode is used, it must be ensured that the connection portion 32 can drive the connection joint 6 to rotate, that is, the connection portion 32 can transmit torque to the connection joint 6. Be provided with the external screw thread on the outer wall of attach fitting 6, oil pipe plug valve 4 is including dismantling the connecting cylinder 42 of connection on center tube 41, wherein can be any realizable connected mode such as key-type connection or welding between connecting cylinder and the center tube 41, no matter which connected mode is adopted, must guarantee that connecting cylinder 42 can drive center tube 41 and rotate, and connecting cylinder 42 can transmit the moment of torsion to center tube 41 promptly. An internal thread matched with the external thread on the outer wall of the outer connecting joint 6 is arranged on the inner wall of the connecting cylinder 42, and the connecting joint 6 can be screwed in the connecting cylinder 42 to connect the connecting part 32 and the central tube 41 together. Therefore, the receiving device can drive the connecting cylinder 42 to drive the central pipe 41 to rotate through the connecting joint 6 so as to realize the plugging or the unplugging of the oil pipe plugging valve 4 on the oil pipe.

Although the connection portion 32 and the center tube 41 are connected to each other easily by such a configuration, the center tube 41 is rotated only in one direction, and therefore, it is suitable for only the plugging operation or only the unsealing operation.

Preferably, still include the extension rod (not shown), be provided with the draw-in groove on the extension rod, the one end of keeping away from oil pipe plug valve 4 on connecting rod 1 is provided with the trip, and the trip can the joint in the draw-in groove to make the extension rod can block admittedly in the one end of oil pipe plug valve 4 of connecting rod 1, make the extension rod can drive connecting rod 1 and rotate. In this way, the connecting rod 1 can be rotationally driven at a position relatively distant from the connecting rod 1, and is more adaptable to work.

Example two

A method of replacing a wellhead member for replacing a blowout preventer installed at a wellhead of an oil well with a christmas tree, using the pick-and-place device (hereinafter, pick-and-place device) of the tubing plug valve described in the first embodiment;

as shown in fig. 3, includes the steps of: s200, extending the oil pipe plugging valve into the oil pipe, and enabling the oil pipe plugging valve to plug the inner cavity of the oil pipe by rotating a central pipe of the oil pipe plugging valve; s300, connecting the oil pipe and the oil pipe hanger together through a connecting part, wherein the connecting part is provided with a receiving channel capable of communicating an inner cavity of the oil pipe with an inner hole of the oil pipe hanger; s600, extending a connecting rod into an inner hole of the oil pipe hanger, enabling the connecting rod to penetrate through a receiving channel in a connecting component to enter an inner cavity of an oil pipe to be connected with a central pipe of an oil pipe plugging valve, and enabling a clamping part on the connecting rod in the taking and delivering device to be clamped on one side, far away from the oil pipe, of the oil pipe hanger; s700, extending an oil pipe into the oil well from the inner hole of the blowout preventer, and setting the oil pipe hanger on the wellhead of the oil well through the inner hole of the blowout preventer; s800, disassembling the blowout preventer from a wellhead of the oil well, and then installing the Christmas tree on the wellhead of the oil well; s900, driving a central pipe of the oil pipe plugging valve to rotate through the taking and delivering device, enabling the oil pipe plugging valve to remove plugging of an inner cavity of the oil pipe, and then pulling the oil pipe plugging valve out of an inner hole of the Christmas tree through the taking and delivering device.

The four-way valve is arranged at the wellhead of the oil well in actual work, the tubing hanger can be directly seated on the four-way valve in the step S700, the inner cavity of the tubing and the wellhead are sealed through the tubing plug valve, and the outer wall of the tubing and the wellhead are sealed through the seating of the tubing hanger, so that blowout can be prevented in the operation process. The invention is not the invention point of the invention but the prior art, the invention only utilizes the prior art, and does not intend to improve the prior art, so the specific mode of setting the tubing hanger is not detailed herein.

The clamping part on the connecting rod in the taking and delivering device is clamped on one side, away from the oil pipe, of the oil pipe hanger in the step S600, the phenomenon that the oil pipe blocking valve falls off and falls into an oil well can be avoided in the operation process, the well control safety risk is reduced, and the oil testing timeliness is guaranteed. It should be noted that in step S300, the connection between the connection component and the oil pipe and the tubing hanger may be a threaded connection, but is not limited thereto, and any other connection method may be adopted to achieve the purpose of the invention.

Further, the taking and delivering device comprises a sleeve, a telescopic shaft and a positioning component, the connecting rod is fixedly connected with the sleeve, the axes of the connecting rod and the sleeve are overlapped, and an opening is formed in one end, far away from the connecting rod, of the sleeve. The telescopic shaft comprises a sliding part and a connecting part which are fixed together, the sliding part is positioned in the sleeve, the connecting part is positioned outside the opening of the sleeve and is connected with the central tube of the oil tube plugging valve, and the sliding part can slide in the sleeve along the axial direction of the sleeve so as to change the distance between the connecting part and the opening. When the sliding part moves to a target position in the sleeve, the positioning component can fix the sliding part in the sleeve;

as shown in fig. 3, step S600 is preceded by step S500: the position of the sliding part in the sleeve is adjusted, and then the sliding part is fixed in the sleeve by a positioning component. The specific operation can be that the connecting portion of telescopic link stretches into in the oil pipe earlier, makes the position mark, then adjusts the position of sliding part in the sleeve according to the position mark to the requirement of the work of acceping is met.

As an embodiment, the taking and delivering device further comprises a connecting joint;

the connecting joint is detachably connected to the connecting part, and external threads are arranged on the outer wall of the connecting joint

The oil pipe blocking valve comprises a connecting cylinder detachably connected to the central pipe, an inner thread matched with an outer thread on the outer wall of the outer connecting joint is arranged on the inner wall of the connecting cylinder, and the connecting joint can be in threaded connection in the connecting cylinder so as to connect the connecting part and the central pipe together;

as shown in fig. 3, step S200 is preceded by step S100 of connecting the connector cartridge with the center tube; step S400 is included before step S500, the connecting joint is fixedly connected to the connecting part; in the step S600, the connection rod is screwed to the connection cylinder connected to the central tube through the connection joint connected to the connection portion. In this way, the connection between the connection part and the central pipe can be made simpler and faster, it should be noted that this technical solution can only drive the middle spool to be screwed in one direction, in this case, this solution is only used as an example to achieve the unsealing operation of the tubing plugging valve, and at this time, the plugging operation of the tubing plugging valve in step S200 can be performed by other tools.

EXAMPLE III

A method for replacing the components of well head features that the Christmas tree at the well head of oil well is replaced by a well sealer, a tubing hanger is arranged in the internal hole of Christmas tree, the oil tube is connected to said tubing hanger via a connecting part, the connecting part has a channel for connecting the internal cavity of oil tube to the internal hole of tubing hanger,

a transfer device (hereinafter, transfer device) using the oil pipe plugging valve described in example one;

as shown in fig. 4, includes the steps of: s100', connecting a connecting rod in the receiving device with a central pipe of an oil pipe plugging valve; s200', driving an oil pipe blocking valve to extend into an inner hole of the Christmas tree through a connecting rod, sequentially penetrating through the inner hole of an oil pipe hanger, receiving a channel, entering an inner cavity of the oil pipe, and enabling a clamping part on the connecting rod to be clamped on the oil pipe hanger; s300', driving a central pipe to rotate through a connecting pipe to enable an oil pipe plugging valve to plug an inner cavity of an oil pipe; s400', detaching the Christmas tree from the wellhead of the oil well, and then installing the blowout preventer on the wellhead of the oil well; s500', the oil pipe plugging valve together with the oil pipe, the connecting component and the tubing hanger is pulled out of the inner hole of the blowout preventer through a connecting pipe.

By adopting the technical scheme that the clamping part on the connecting rod is clamped on the tubing hanger in the step S200', the phenomenon that the tubing plug valve falls off and falls into an oil well can be avoided in the operation process, the well control safety risk is reduced, and the oil testing timeliness is ensured. It should be noted that in step S100', the connection rod and the central tube may be connected in a snap-fit manner or other connection manners, as long as the connection rod can drive the central tube to rotate, and the plugging operation of the oil tube plugging valve is realized.

The embodiment of the invention has the advantages of reasonable design, simple operation, and capability of preventing blowout during oil testing and preventing the oil pipe from blocking the valve and falling off, thereby reducing the safety risk of well control and ensuring the aging of oil testing.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The utility model provides a device is sent in getting of oil pipe plug valve which characterized in that:

comprises a connecting rod (1);

the connecting rod (1) can be connected with a central pipe (41) of the oil pipe plugging valve (4) and used for driving the central pipe (41) to rotate and pulling the oil pipe plugging valve (4) through the central pipe (41);

be provided with joint portion (11) on the outer wall of connecting rod (1), so that connecting rod (1) can pass through joint portion (11) joint is on external environment part.

2. The retrieving device of the tubing plugging valve according to claim 1, wherein:

the telescopic shaft further comprises a sleeve (2), a telescopic shaft (3) and a positioning component;

the connecting rod (1) is fixedly connected with the sleeve (2), the axes of the connecting rod and the sleeve are overlapped, and one end, far away from the connecting rod (1), of the sleeve (2) is provided with an opening (21);

the telescopic shaft (3) comprises a sliding part (31) and a connecting part (32) which are fixed together, the sliding part (31) is positioned in the sleeve (2), the connecting part (32) extends out of the opening (21) of the sleeve (2) and can be connected with a central pipe (41) of the oil pipe plugging valve (4), and the sliding part (31) can slide in the sleeve (2) along the axial direction of the sleeve (2) so as to change the distance between the connecting part (32) and the opening (21);

the positioning member is capable of fixing the sliding portion (31) within the sleeve (2) when the sliding portion (31) moves within the sleeve (2) to a target position.

3. The retrieving device of the tubing plugging valve according to claim 2, wherein:

the positioning component is a screw;

the side wall of the sleeve (2) is provided with a positioning screw hole (22) matched with the screw, the screw is in threaded connection with the positioning screw hole (22), and abuts against the surface of the sliding part (31) through screwing in the positioning screw hole (22), and the sliding part (31) is pressed against the inner wall of the sleeve (2).

4. The pickup device of the oil pipe plugging valve according to claim 3, wherein:

the number of the positioning screw holes (22) is more than two, and the positioning screw holes (22) are sequentially distributed at intervals along the axial direction of the sleeve (2).

5. The retrieving device of the tubing plugging valve according to claim 2, wherein:

also comprises a flat key (5);

the outer wall of the sliding portion (31) is provided with a first key groove (311) matched with the flat key (5), the inner wall of the sleeve (2) is provided with a second key groove (23) matched with the flat key (5), and the flat key (5) is located in the first key groove (311) and the second key groove (23) so as to enable the sliding portion (31) and the sleeve (2) to be located relatively along the circumferential direction of the sleeve (2).

6. The retrieving device of the tubing plugging valve according to claim 2, wherein:

also comprises a connecting joint (6);

the connecting joint (6) is detachably connected to the connecting part (32), and an external thread is arranged on the outer wall of the connecting joint (6);

the oil pipe plugging valve (4) comprises a connecting cylinder (42) detachably connected to the central pipe (41), an internal thread matched with an external thread on the outer wall of the outer connecting joint (6) is arranged on the inner wall of the connecting cylinder (42), the connecting joint (6) can be in threaded connection with the inside of the connecting cylinder (42), and the connecting part (32) is connected with the central pipe (41).

7. The retrieving device of the tubing plugging valve according to any one of claims 1 to 6, wherein:

the device also comprises an extension rod;

be provided with the draw-in groove on the extension rod keep away from on connecting rod (1) the one end of oil pipe plugging valve (4) is provided with trip (12), trip (12) can the joint in the draw-in groove to make the extension rod can block admittedly connecting rod (1) the one end of oil pipe plugging valve (4).

8. A method of replacing a wellhead component for replacing a blowout preventer provided at a wellhead of an oil well with a christmas tree, characterized by:

a delivery device using the oil pipe plugging valve according to any one of claims 1 to 6;

the method comprises the following steps:

s200, extending an oil pipe plugging valve into an oil pipe, and enabling the oil pipe plugging valve to plug an inner cavity of the oil pipe by rotating a central pipe of the oil pipe plugging valve;

s300, connecting the oil pipe and the oil pipe hanger together through a connecting part, wherein the connecting part is provided with a receiving channel which can communicate an inner cavity of the oil pipe with an inner hole of the oil pipe hanger;

s600, extending the connecting rod into an inner hole of the tubing hanger, enabling the connecting rod to penetrate through a receiving channel in the connecting component to enter an inner cavity of the tubing to be connected with a central tube of the tubing plugging valve, and enabling a clamping part on the connecting rod in the taking and delivering device to be clamped on one side, far away from the tubing, of the tubing hanger;

s700, extending the oil pipe into the oil well from the inner hole of the blowout preventer, and setting the oil pipe hanger on the wellhead of the oil well through the inner hole of the blowout preventer;

s800, detaching the blowout preventer from the wellhead of the oil well, and then installing the Christmas tree on the wellhead of the oil well;

s900, driving the central pipe of the oil pipe plugging valve to rotate through the taking and delivering device, enabling the oil pipe plugging valve to remove plugging of the inner cavity of the oil pipe, and then pulling the oil pipe plugging valve out of the inner hole of the Christmas tree through the taking and delivering device.

9. A method of replacing a wellhead component as claimed in claim 8 wherein:

the taking and delivering device comprises a sleeve, a telescopic shaft and a positioning component;

the connecting rod is fixedly connected with the sleeve, the axes of the connecting rod and the sleeve are overlapped, and one end of the sleeve, far away from the connecting rod, is provided with an opening;

the telescopic shaft comprises a sliding part and a connecting part which are fixed together, the sliding part is positioned in the sleeve, the connecting part is positioned outside the opening of the sleeve and is connected with a central pipe of the oil pipe plugging valve, and the sliding part can slide in the sleeve along the axial direction of the sleeve so as to change the distance between the connecting part and the opening;

the positioning member is capable of fixing the sliding portion within the sleeve when the sliding portion moves within the sleeve to a target position;

step S600 is preceded by step S500: the position of the sliding part in the sleeve is adjusted, and then the sliding part is fixed in the sleeve by the positioning component.

Preferably, the taking and delivering device further comprises a connecting joint;

the connecting joint is detachably connected to the connecting part, and external threads are arranged on the outer wall of the connecting joint

The oil pipe blocking valve comprises a connecting cylinder detachably connected to the central pipe, an inner thread matched with an outer thread on the outer wall of the external connecting joint is arranged on the inner wall of the connecting cylinder, and the connecting joint can be in threaded connection in the connecting cylinder so as to connect the connecting part and the central pipe together;

step S200 is preceded by step S100 of connecting the connector cartridge with the central tube;

step S400 is included before step S500, the connecting joint is fixedly connected to the connecting part;

in the step S600, the connecting rod is screwed to the connecting cylinder connected to the central tube through the connecting joint connected to the connecting portion.

10. A method of replacing a wellhead component for replacing a christmas tree arranged at a wellhead of an oil well with a blowout preventer, the christmas tree having a tubing hanger in an inner bore thereof at the wellhead of the oil well, the oil well having an oil tube therein connected to the tubing hanger by a connecting member, wherein the connecting member has an access passage capable of communicating an inner cavity of the oil tube with the inner bore of the tubing hanger, characterized by:

a delivery device using the oil pipe plugging valve according to any one of claims 1 to 6;

the method comprises the following steps:

s100', connecting a connecting rod in the receiving device with a central pipe of an oil pipe plugging valve;

s200', the connecting rod drives the oil pipe plugging valve to extend into an inner hole of the Christmas tree and sequentially pass through the inner hole of the oil pipe hanger, the receiving channel enters an inner cavity of the oil pipe, and the clamping part on the connecting rod is clamped on the oil pipe hanger;

s300', driving the central pipe to rotate through the connecting pipe, and enabling the oil pipe plugging valve to plug the inner cavity of the oil pipe;

s400', detaching the Christmas tree from the wellhead of the oil well, and then installing the blowout preventer on the wellhead of the oil well;

s500', the oil pipe plugging valve together with the oil pipe, the connecting component and the tubing hanger is pulled out of the inner hole of the blowout preventer through the connecting pipe.

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