RU84456U1 - LAYOUT CUTTING SYSTEM - Google Patents

Abstract

1. The shut-off system, lowered into the well on a pipe string consisting of upper and lower columns, containing a packer, a pump, a disconnector located above the packer, which can be placed in the well to the depth of the packer installation of the lower pipe string and replace the upper pipe string, and a nipple , made on the disconnector, characterized in that the system comprises a valve block comprising a shut-off valve and a locking device located in a nipple located on the bottom pipe string in the form of a shank, and connected to the device we have it for its installation (removal), equipped with a jar, with the ability to install the valve block in the nipple by means of a locking device, disconnect from it and lift from the well, containing a mounting collet, which is placed with a stop in the entrance chamfer of the pipe connecting the installation (removal) device with the lock a device containing a gripping collet located at the end of the nipple, and fixing the collet, spring-loaded with a spring relative to the axis of the valve-shutoff and having the ability to pair with the nipple, the system also contains ovitel mechanical impurities formed as a pipe with a partition in the middle and rows of holes in its upper and lower parts and provided in its upper portion a sealing rubber ring. ! 2. The system according to claim 1, characterized in that the shut-off valve is sealed with a sealant relative to the nipple. ! 3. The system according to claim 1, characterized in that the partition of the catcher of mechanical impurities is placed above the disconnector. ! 4. The system according to claim 1 or 3, characterized in that the trap of mechanical impurities is installed in the well after lifting

Description

The utility model relates to the oil and gas industry, and in particular to the configuration of equipment for the reservoir cutter during well operation.

Known well shut-off, including a housing, a piston interacting with a retainer, a valve with a seat and ball, a rod connected to the piston, and a packer, RU No. 2191253 C1, E21B 34/06, 2002.10.20.

Known borehole shutoff valve containing a housing located under the packer, equipped with a locking body in the form of a plunger with a check valve and a rigidly fixed node for locking the locking body, RU No. 2224087 C2, E21B 34/06, 2004.02.20.

Known shut-off valve comprising a housing with a seat, a locking member, a locking control assembly including a spring-loaded stem installed in the housing, when the housing and stem are composite, with the ability to reinstall and place the tubing in the nipple, RU No. 2311578 C1, E21B 34/06, 2007.11.27.

A known system for disconnecting two objects of a well, comprising a packer, valve devices including shutoff elements, a pipe string with a disconnector providing joint-separate interaction of auxiliary equipment with functional channels between valve devices and a packer, RU No. 2291286 C1, E21B 43/14, Е21В 34 / 06, 2007.01.10.

A known installation for the operation of the upper and lower layers in one well, comprising a pipe string consisting of upper and lower columns, a packer, a pump, a disconnector located above the packer, having the ability to place the lower pipe string packer in the well to the depth of installation of the packer and replace the upper pipe string , and the nipple made on the disconnector, RU No. 76968 U1, E21B 43/14, 2008.10.10.

This technical solution was adopted as the "closest analogue" of this utility model.

The installation of the "closest analogue" does not provide for the protection of equipment from mechanical impurities, which reduces the reliability of its operation.

The present utility model is based on solving a problem that allows protecting the cutter equipment from mechanical impurities, ensuring the reliability of its installation when the system is equipped, increasing the reliability of operation, and simplifying the breakdown and lifting of the system.

The technical result of this utility model is to implement a system with a valve block including a shut-off valve and a locking device, and installed in the nipple of the disconnector after installing the packer using a device for its installation (removal), as well as with a catcher of mechanical impurities, lowered into the well after lifting the installation (removal) device of the valve block and the subsequent lifting of the upper pipe string, reciprocal to the disconnector, but before the pump is lowered.

According to a utility model, this problem is solved due to the fact that the cutter system, lowered into the well on a pipe string consisting of upper and lower columns, contains a packer, a pump, a disconnector located above the packer, which can be placed in the well to the depth of installation of the packer of the lower column pipes and replacing the upper pipe string, and a nipple made on the disconnector.

The system comprises a valve block including a shut-off valve and a locking device located in a nipple located on the lower pipe string in the form of a shank and connected to a device for its installation (removal).

The device for installation (removal) is equipped with a jar and has the ability to install the valve block in the nipple by means of a locking device, disconnect from it and lift from the well.

The device for installation (removal) contains an installation collet, located with emphasis in the entrance chamfer of the pipe.

The pipe connects the installation (removal) device with the locking device.

The locking device contains a gripping collet located on the end of the nipple, and a fixing collet, spring-loaded with a spring relative to the axis of the valve-cutter and having the ability to pair with the nipple.

The system also contains a catcher of mechanical impurities, made in the form of a pipe with a partition in the middle part and rows of holes in its upper and lower parts and equipped with a sealing rubber ring in its upper part.

In addition, the shut-off valve is sealed relative to the nipple with a sealant.

In addition, the partition of the catcher of mechanical impurities is placed above the disconnector.

In addition, a catcher of mechanical impurities is installed in the well after lifting the valve block mounting device and then lifting the upper pipe string, but before the pump is lowered.

The applicant has not identified sources containing information about the technical solution that is identical to the characteristics given in the formula of this utility model, this determines, according to the applicant, the utility model meets the criterion of “novelty”.

The essence of the utility model is illustrated by drawings, which depict:

figure 1 - system cut-off, schematically;

figure 2 - Configuration of the system, schematically;

figure 3 - valve block, section;

figure 4 - adaptation of the installation (removal) of the valve block, section;

figure 5 - catcher of mechanical impurities, section.

The shut-off system is lowered into the well on a pipe string 1 consisting of upper 2 and lower 3 columns.

The cutter system contains:

Packer - 4.

Pump - 5.

Disconnector - 6,

nipple (on the disconnector) - 7.

Valve block - 8.

Clan-clapper (block 8) - 9,

body (valve 9) - 10,

a sealant (cases 10) - 11,

locking element (valve 9) - 12.

The locking device (block 8) - 13,

gripping collet (device 13) - 14,

fixing collet (device 13) - 15,

spring (for collet 15) - 16.

Adaptation of installation (removal) (for block 8) - 17,

installation collet (fixtures 17) - 18.

The pipe (for tool 17 and device 13) - 19.

Iass - 20.

Catcher of mechanical impurities - 21,

partition (catcher 21) - 22

holes in the upper part (trap 21) - 23,

holes in the lower part (catcher 21) - 24,

sealing rubber ring (catcher 21) - 25.

The shut-off system comprises a packer 4, a pump 5, a disconnector 6 with a nipple 7, a valve block 8, a mounting (removal) device 17 of the valve block 8 and a mechanical impurity trap 21.

The disconnector 6 is located above the packer 4 and limits the placement in the well to the depth of installation of the packer 4 of the lower pipe string 3 in the form of a shank. The upper pipe string 2 responds to the disconnector 6. The disconnector 6 allows the replacement of the upper pipe string 2.

The valve block 8 includes a shut-off valve 9 and a locking device 13.

The valve block 8 is installed in the nipple 7.

The shut-off valve 9 includes a housing 10 and a locking element 12. The housing 10 of the shut-off valve 9 is sealed relative to the nipple 7 by a sealant 11.

The locking device 13 includes a gripping collet 14 located at the end of the nipple 7, and a fixing collet 15, spring-loaded with a spring 16 relative to the axis of the valve-shutter 9. The gripping collet 14 is associated with the nipple 7.

The installation of the valve block 8 in the nipple 7 is carried out using the installation device 17 and the jar 20.

The device for installation (removal) 17 of the valve block 8 is connected to its locking device 13 by a pipe 19.

The device for installation (removal) 17 contains a mounting collet 18, which is located with emphasis in the entrance chamfer of the pipe 19.

The fixture for installation 17 is disconnected from the locking device 13 when lifting from the well.

The catcher of mechanical impurities 21 is made in the form of a pipe with a rubber sealing ring 25 in its upper part. In the middle part of the catcher 21 is a partition 22 and in the upper and lower parts there are rows of holes 23 and 24, respectively.

The partition 22 is placed above the disconnector 6. The catcher 21 is installed in the well after lifting the fixture of the installation 17 and the subsequent lifting of the upper string of pipes 2, but before the descent of the pump 5. The system operates as follows.

The packer 4 is lowered into the well on the pipe string 1. Unpacker 4 is unpacked. The installation is checked for leaks by pressure of the liquid through the annulus.

Assemble the valve block 8 and fixtures 17.

Set the shut-off valve 9 of the valve block 8 to the required pressure to open it.

The fixture of the installation 17 is introduced into the pipe 19. The mounting collet 18. resting against the entry chamfer of the pipe 19 (at its end), moves and deforms in the radial direction. In this case, the outer diameter of the mounting collet 18 is reduced, and it passes into the groove (not shown) of the pipe 19, then is expanded, restoring the diameter. There is a capture of the valve block 8. Fixation of the mounting collet 18 in the groove of the pipe 19 is carried out by the reverse movement of the installation fixture (removal) 17 in the axial direction.

Using cable technology, on the fixture of the installation 17, together with the jar 20, lower the valve block 8 and install in the nipple 7.

The impact of the jar 20 on the adaptation of the installation 17 carry out the landing of the valve-shutoff 9.

The outer diameter of the gripping collet 14 of the locking device 13 abuts against the end of the nipple 5, and the mounting device 17 moves the locking collet 15 in the axial direction, deforming the spring 16. The gripping collet 14 is compressed in the radial direction and enters the nipple 7. As the gripper moves in the nipple 7 collet 14 is expanded in the groove (not shown) of the nipple 7 and the valve-cutter 9 is grasped by the groove of the nipple 7. The installation fixture 17 is moved up. The locking collet 15 is returned to its original position, fixing the capture of the gripping collet 14 in the nipple 7.

By striking the jar 20, pins (not shown) are cut down. The housing of the installation fixture 17 abuts against the end of the pipe 19. The installation collet 18 is displaced, compressed and exits the pipe 19.

Raise the fixture installation 17 together with the jar 20 from the well. Disconnect the disconnector 6 from the packer 4 and lift the upper column 2 from the well.

The descent of the catcher of mechanical impurities 21 into the well is carried out by free discharge - upwardly mounted on the sealing rubber ring 25. Then pump 5 is lowered.

Liquid is pumped out over packer 4. The fluid level in the well decreases, and when the fluid pressure on the shutoff valve 9 (equal to the difference in the levels of static and dynamic pressures and plus the setting pressure of the shutoff valve 9) is less than the reservoir pressure, then the shut-off element 12 of the valve the shut-off device 9 will open and the produced fluid from under the packer 4 will flow to the pump 5.

If necessary, replace the pump 5 in the annulus serves killing fluid and add to the well, increasing the liquid level. At the end of the topping up, the pressure above the packer 4 is increased above the setting of the shut-off valve 9. The locking element 12 of the shut-off valve 9 is closed. After that, the depressurization of the well and the change of pump 5 are carried out. When pump 5 is started, the cycle is repeated.

If it is necessary to lift the packer 4 at the beginning, raise the pump 5, then lower the collet catcher (not shown) to raise the catcher of mechanical impurities 21. Then lower the upper column 2, the reciprocal of the disconnector 6, and connect it to the packer 4, jam the well, disrupt the packer 4 and lift it from the well.

The system is completed by installing packer 4, lowering the valve block 8 on the mounting fixture 17 with the jar 20, installing the valve block 8 in the nipple 7 on the disconnector 6, lifting the mounting fixture 17 with the jar 20, lifting the upper pipe string 2, installing the trap 21 and lowering the pump 5 increases the reliability and simplifies the stall and lift the system, if necessary.

The implementation of the valve block 8 with the locking device 13 and the valve shutoff 9, sealing the housing 10 of the valve shutoff 9 relative to the nipple 7 with a sealant 11, the connection of the locking device 13 with the installation (removal) device 17, the structural design of the locking device 13 ensure the reliability of the installation of the system.

The installation of the valve block 8 using the device 17 in the nipple 7 after the descent of the packer 4 into the well allows to protect the shut-off valve 9 from clogging with mechanical impurities during the descent of the system into the well.

The design and placement of the catcher of mechanical impurities 21 allows you to protect against mechanical impurities as the valve-shutter 9, and the "head" of the packer 4 increases the reliability of the system.

The proposed reservoir cutter system used equipment, devices, parts and assemblies that are widely used in the oil and gas industry, and pilot tests determine, in the applicant’s opinion, that it meets the criterion of “industrial applicability”.

Claims (4)

1. The shut-off system, lowered into the well on a pipe string consisting of upper and lower columns, containing a packer, a pump, a disconnector located above the packer, which can be placed in the well to the depth of the packer installation of the lower pipe string and replace the upper pipe string, and a nipple , made on the disconnector, characterized in that the system comprises a valve block comprising a shut-off valve and a locking device located in a nipple located on the bottom pipe string in the form of a shank, and connected to the device we have it for its installation (removal), equipped with a jar, with the ability to install the valve block in the nipple by means of a locking device, disconnect from it and lift from the well, containing a mounting collet, which is placed with a stop in the entrance chamfer of the pipe connecting the installation (removal) device with the lock a device containing a gripping collet located at the end of the nipple, and fixing the collet, spring-loaded with a spring relative to the axis of the valve-shutoff and having the ability to pair with the nipple, the system also contains ovitel mechanical impurities formed as a pipe with a partition in the middle and rows of holes in its upper and lower parts and provided in its upper portion a sealing rubber ring. 2. The system according to claim 1, characterized in that the shut-off valve is sealed with a sealant relative to the nipple. 3. The system according to claim 1, characterized in that the partition of the catcher of mechanical impurities is placed above the disconnector. 4. The system according to claim 1 or 3, characterized in that the catcher of mechanical impurities is installed in the well after lifting the installation device of the valve block and the subsequent lifting of the upper pipe string, but before the descent of the pump.