RU21931U1 - PACKER SYSTEM ASSEMBLY - Google Patents

Description

PACKER SYSTEM ASSEMBLY

The utility model relates to the oil and gas industry, namely to packer systems designed to seal tubing or drill pipe in a well casing.

Known packer system having a sleeve with a pipe connection for connecting with a pipe string, a packer with a housing, a barrel and a seal and a retainer with a sleeve, see US Pat. No. 3,603,388 for cells. E 21 B 33/12, publ. 1971

This system does not provide reliable operation, since the latch has a detachable design.

Known packer system containing a packer with a body having a threaded thread, a sealing element, slips, and pushers having a thread for cutting the body, see USSR copyright certificate

No. 751 961 by class E 21 B 33/12, publ. 1978 G. This system is not reliable in operation, since it is possible to lower the slips spontaneously before installing it in the well.

Known packer system containing an installation device having a barrel with quick couplings, a packer device with a fixing unit in the initial position when lowering into the well, see USSR author's certificate No. 1 667 637 according to class. E 21 33/12, publ. 1987 year

MPK7 E 21 V 33/12 This system is complex in constructive implementation, and this

has an impact on its operation.

A known packer system comprising a packer including a packer barrel, an emphasis for it and a packer collet, a locking device with locking cams and a mounting device including a mounting barrel and a locking assembly, see application for the issuance of a certificate of the Russian Federation for utility model No. 2 001 118 794 ( the decision to issue a certificate of August 3, 2001) dated July 2, 2001 under class. E 21 B 33/12.

This technical solution is taken as a prototype of this utility model.

The disadvantage of the prototype system is that the reliability of the fixation of the packer and the installation device of the prototype system depends on the hydraulic pressure inside the system, which reduces its reliability when lowering into the well and the likelihood of the system remaining as a single building block until it is installed.

The basis of this model is the solution to the problem of increasing the reliability of the packer system during operation by assembling the packer with installation and locking devices into a single assembly unit and reducing the possibility of displacement or disintegration of nodes and individual elements when the system is lowered into the well.

2 According to the utility model, this problem is solved due to the fact that

the fixing unit has a housing with a key that interacts, on the one hand, with a nut located in the upper part of the installation trunk, and on the other hand, is placed on it; , which holds the locking cams by means of a cam lock, in addition, a tip is made in the lower part of the mounting barrel, the groove of which is placed in the packer collet.

The applicant has not identified any sources of information containing information about a technical solution identical to the characteristics given in the formula of this utility model. This determines, according to the applicants, the suitability of the utility model for the criterion of “novelty. The essence of the utility model is illustrated by drawings:

FIG. 1. The packer system assembly (section).

FIG. 2. Node A in FIG. 1.

FIG. 3. Node B in FIG. 1. Packer system consists of:

packer - 1,

locking device - 2,

installation device - 3. Packer 1 includes:

SLO

3

OJ /

Stopper Ustano Stopper packer barrel - 4, stops of the lower part of the barrel) -5, holes (at the stop 5) - 6, packer collet (inside the barrel 4 with the ability to move relative to the holes 6 in the stop 5) - 7. The new device 2 includes: stop cams (for example, four pieces) -8, the mounting device 3 includes: an installation barrel -9, a tip (in the lower part of the barrel 9) - 10, a groove (in the tip 10) - 11, a nut (in the upper part of the barrel) - 12. fixing unit - 13, case-14, key (on case 14) - 15 cam lock (on case 14) - 16, mounting threaded collet (on barrel 9) - 17, the stupa (on the collet 17) - 18, the groove (in the collet 17) - 19, the mechanical latch (in the groove 19) - 20. The second 2 and installation 3 nodes work only assembled with the packer 1.

The packer barrel 4 is screwed on to the packer 1 with the mounting collet 17 of the mounting device 3. During the make-up process, the tip 10 biases the packer collet 7 until the holes 6 in the stop 5 are opposite the slots in the collet, through which fluid from the well will enter the barrel 9 when the system is lowered into the well, and the ledges on the petals of the collet will enter the groove 11 of the tip 10. On the ledge 18 of the mounting collet 17, the cams 8 are installed, while the mechanical latch 20 is opposite the groove 19. The locking unit 13 is axially displaced along the shaft Ola 9 on the cams 8 until it stops with the cam latch 16. During the movement, the latch 20 is recessed into the groove 19. To prevent reverse axial movement of the locking unit 13, it rotates several revolutions (8). In this case, the nut 12, fixed with a pin 15, is screwed onto the barrel 9 until it stops. A downward movement along the barrel 9 of the collet 17, screwed with the packer 1, and the fixing unit 13 is prevented by the latch 20, and a nut 12 is displaced upward along the barrel 9 of the fixing unit, the nut 12. The packer system is ready to be launched into the well.

After the descent into the well, the barrel 9 is rotated to the required depth, and the fixing unit 13 remains stationary due to the spring centralizer. The nut 12 is screwed from the barrel 9 and frees up the possibility of axial movement of the barrel 9 and collet 17 down. With this movement

past the fixed locking unit 13, the cams 8 exit from under the cam latch 16, and the spring-loaded latch 20 is released and falls out of the groove 19. The cams 8, which are not held in any way, fall apart to the walls of the casing. Collet 17 together with the packer on it receives the possibility of axial movement along the axis of the barrel 9 up and down. After that, pulling the barrel 9 upwards, you can cut the cams into the casing, seal it with the packer 1, and then, having made the necessary number of turns with the barrel 9, unscrew the collet 17 from the installed packer L. 7 to the initial position, in which the holes 6 will be blocked by the solid part of the collet 7.

The packer system used structural elements and parts that are widely used for the manufacture of packers and systems for installing them in the oil and gas industry, which determines, according to the applicant, his compliance with the criterion of “industrial applicability.

Claims (1)

An assembled packer system comprising a packer including a packer barrel, an abutment for it and a packer collet, a locking device with locking cams and an installation device including an installation barrel and a fixing assembly, characterized in that the fixing assembly has a housing with a key that cooperates on one side with a nut located in the upper part of the installation barrel, and on the other hand there is a cam lock, an installation threaded collet connected to the packer barrel and made with a ledge, which holding There are locking cams by means of a cam lock, in addition, a tip is made in the lower part of the mounting barrel, the groove of which is located in the packer collet.