RU54392U1 - HOUR PACKER - Google Patents

Abstract

The utility model relates to the oil and gas industry and can be used in any well cased

This utility model is based on a solution to a problem that allows to increase the reliability of the packer when working with high pressure.

The watch packer contains a hollow shaft, a mechanical anchor, seals, a locking mechanism.

The hollow shaft has upper and lower sections with multidirectional threads - left and right, respectively, and with a smooth surface between them, and the locking mechanism contains a transport nut with a right thread, a counter thread of the lower portion of the hollow shaft, and a lock nut with a left thread, a counter thread its upper section, installed between the ring, in the openings of which compression springs are placed, each having an even number of segments, at least four with a trailing spring, and provided with retaining elements, for example p, screws located in the holes of the outer sleeve of the locking mechanism with the possibility of moving them within the holes, while in the ring of each pair of segments there corresponds a hole for the compression spring.

Description

The utility model relates to the oil and gas industry and can be used in any cased wells.

Known packer containing a hollow barrel, anchor device, seals, hydraulic drive with a locking unit in the form of a pair of interacting gear racks, RU No. 2105131 C1, E 21 B 33/12, 1998.02.20.

Known packer comprising a hollow barrel with ratchet teeth in the form of a left-hand thread, anchor elements, seal, retainer, RU No. 20111794 C1, E 21 B 33/12, 1994.04.30.

Known packer containing sub, anchor elements, seal, upper and lower rods, rigidly interconnected, a differential rod connected to the upper and lower rods, and a differential sleeve with the possibility of fixing - meshing it with a differential rod, RU No. 2179228 C2, E 21 B 33/12, 2002.02.10.

The constructive implementation of known packers does not ensure the reliability of their work.

Known mechanical packer system containing the upper and lower packers, interconnected by pipes, each of which has a hollow shaft, anchor, seals, and locking mechanisms - transport in the lower packer and locking in the upper, RU No. 226604 C1, E 21 B 33 / 12, 2005.02.20.

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

However, it has disadvantages.

The prototype packers are equipped with fixing elements, which, when working with the packer, do not withstand high pressure, which reduces the reliability of working with them.

This utility model is based on a solution to a problem that allows to increase the reliability of the packer when working with high pressure.

According to a utility model, this problem is solved due to the fact that the watch packer contains a hollow shaft, a mechanical anchor, seals, and a locking mechanism.

The hollow shaft has upper and lower sections with multidirectional threads - left and right, respectively, and with a smooth surface between them, and the locking mechanism contains a transport nut with a right thread, a counter thread of the lower portion of the hollow shaft, and a lock nut with a left thread, a counter thread its upper section, installed between the ring, in the openings of which compression springs are placed, each having an even number of segments, at least four with a trailing spring, and provided with retaining elements, for example p, screws located in the holes of the outer sleeve of the locking mechanism with the possibility of moving them within the holes, while in the ring of each pair of segments there corresponds a hole for the compression spring.

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 - Watch packer (section).

figure 2 - Node And figure 1.

figure 3 - Section BB in figure 2.

Watch packer contains:

Hollow shaft 1,

- lower section (shaft 1) 2,

- right-hand thread (section 2) 3,

- upper section (shaft 1) 4,

- left-hand thread (section 4) 5,

- smooth surface (on shaft 1 between threads 3 and 5) 6,

- ledge (on shaft 1) 7.

Sub 8.

The locking mechanism 9,

- transport nut with right-hand thread (mechanism 9) 10,

- lock nut with left-hand thread (mechanism 9) 11,

- ring (between nuts 10 and 11) 12,

- holes (in ring 12) 13,

- compression springs (in holes 13) 14,

- holding elements in the form of screws (in nuts 10 and 11) 15,

- segments (in nuts 10 and 11) 16,

- closing springs (segments 16) 17.

The outer sleeve (mechanism 9) 18,

- holes (in sleeve 18 for screws 15) 19.

Cam 20,

- screws (cam 20) 21.

Cam 22.

Seals 23.

Sleeve 24,

- grooves (bushings 24) 25.

Mechanical anchor 26,

- spring-loaded dies (anchors 26) 27,

- upper cone (anchors 26) 28,

- lower cone (anchors 26) 29,

- pin (lower cone 29) 30,

- shirt (anchors 26) 31,

- groove (in shirt 31) 32.

Spring loaded brake 33.

The watch packer contains a hollow shaft 1, a mechanical armature 26, seals 23, a locking mechanism 9, cams 20 and 22, a sleeve 24, a sub 8 and a spring-loaded brake 33.

The hollow shaft 1 has upper 4 and lower 2 sections with multidirectional threads - left 5 and right 3, respectively. Between the right 3 and left 5 threads on the hollow shaft 1, a smooth surface 6 is made.

A sleeve 24 is mounted on the hollow shaft 1. The packer is equipped with cams 20 and 22. The cam 20 has screws 21. The grooves 25 are made in the sleeve 24. The screws 21 are able to interact with the grooves 25. Seals 23 are located between the cams 20 and 22.

The hollow shaft 1 is interfaced with a sub 8 and a spring-loaded brake 33. A step 7 is made on the hollow shaft 1 to interact with the sleeve 24.

The mechanical anchor 26 consists of spring-loaded dies 27, upper 28 and lower 29 cones and a shirt 31. The lower cone 29 has a pin 30. A groove 32 is made in the shirt 31. The pin 30 is able to interact with the groove 32 of the shirt 31.

The locking mechanism 9 comprises a transport nut with a right-hand thread 10 and a lock nut with a left-hand thread 11. The thread of the transport nut 10 is responsive to the right-hand thread 3 of the lower portion 2 of the hollow shaft 1. The thread of the lock nut 11 is responsive to the left thread 5 of the upper portion 4 of the hollow shaft 1. Between the transport nut 10 and lock nut 11 installed

ring 12. In ring 12, holes 13 are made for accommodating compression springs 14. Each of the nuts 10 and 11 has an even number of segments 16. The best option is to make four segments 16. Each pair of segments 16 in ring 12 has one hole 13 for compression spring 14 Each four segments 16 are provided with a closing spring 17. Each of the nuts 10 and 11 has retaining elements in the form of screws 15. The locking mechanism 9 limits the outer sleeve 18. The holes 18 are made in the sleeve 18. tapping them within the holes 19.

Work with the packer is as follows.

Sub 8 is screwed with a pipe (not shown). On the pipe, the packer is lowered into the well to the required depth. Installation is carried out while rotating and lowering the pipe. In this case, the hollow shaft 1 carries out axial movement downward. The spring-loaded brake 33 and screw 15 hold the transport nut 10 from rotation, and the hollow shaft 1 is screwed along the right-hand thread 3 of its lower section 2. After the transport nut 10 is on the threadless surface of the hollow shaft 1, it will move down under the weight of the pipe. The sub 8 will abut against the cam 22, which will compress the seals 23, and the upper 28 and lower 29 cones will insert the spring-loaded dies 27 into the casing (not shown). At the same time, the locking nut 11 will be on the left-hand thread 5 of the upper section 4 and will be closed by a closing spring 17, preventing the hollow shaft 1 from moving backward.

To remove the packer from the well, the pipe is lifted while its rotation. In this case, the hollow shaft 1 carries out axial movement upward. The spring-loaded brake 33 and screw 15 hold the lock nut 11 from rotation, and the hollow shaft 1 is screwed along the left-hand thread 5 of its upper section 4, releasing the sub 8 and releasing the seals 23. With further movement, the hollow shaft 1 rests against the sleeve 7 with the shoulder 7

24, moving it together with the screw 21 of the cam 20 and the upper cone 28 of the mechanical armature 26 from its spring-loaded dies 27. Having screwed the left-hand thread 5 with the lock nut 11, the hollow shaft 1 enters the transport nut 10 with the right-hand thread 3. After that, apply force pipe down. Through sub 8 and right-hand thread 3 of the lower section 2 of the hollow shaft 1, the force is transmitted to the transport nut 10, the spring-loaded brake 33, the outer sleeve 18 of the locking mechanism 9, releasing the lower cone 29 of the mechanical armature 26 and releasing the spring-loaded dies 27.

When the locking mechanism 9 is moved upward along the left-hand thread 5, the segments 16 of the transport 10 and the locking 11 nuts are unclenched and jump over it like ratchet devices. When the locking mechanism 9 is moved down along the right-hand thread 3, the segments 16 are unclenched and jump over it like ratchet devices.

The locking mechanism with multidirectional threads in the proposed watch packer increases the reliability of its operation under high pressure.

The proposed watch packer is manufactured industrially at the Izmeren factory and this, according to the applicant, determines its compliance with the criterion of “industrial applicability”.

Claims (1)

A clock packer containing a hollow shaft, an anchor, seals, a locking mechanism, characterized in that the hollow shaft has upper and lower sections with multidirectional threads - left and right, respectively, and with a smooth surface between them, and the locking mechanism contains a transport nut with a right a thread, a mating thread of the lower portion of the hollow shaft, and a lock nut with a left thread, a mating thread of its upper portion, installed between the ring, in the openings of which are placed compression springs having each even number of segments There are at least four entrances with a closing spring, and equipped with retaining elements, for example, screws, located in the holes of the outer sleeve of the locking mechanism with the possibility of moving them within the holes, while in the ring of each pair of segments there corresponds a hole for the compression spring.