CN216665555U

CN216665555U - Double-acting hydraulic packer with closable circulation channel

Info

Publication number: CN216665555U
Application number: CN202220122824.6U
Authority: CN
Inventors: 吕亚楠; 徐淳; 张立坪; 黄德闯
Original assignee: Beijing Sairuihongye Energy Technology Service Co ltd
Current assignee: Beijing Sairuihongye Energy Technology Service Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-06-03
Anticipated expiration: 2032-01-18

Abstract

The utility model relates to the technical field of packers, in particular to a double-acting hydraulic packer with a closable circulating channel, which comprises a packer shell, a rubber ring and a packer central tube, wherein the left end of the packer shell is fixedly connected with the rubber ring, the right end of the packer shell is provided with the packer central tube, the outer side of the packer central tube is slidably connected with a limiting circular plate through a limiting block, the upper end and the lower end of the limiting circular plate are slidably connected with a bent rod through a through hole, and the two ends of the bent rod are fixedly connected with fixed rods through a limiting pin and a pin hole, has good practical value.

Description

Double-acting hydraulic packer with closable circulation channel

Technical Field

The utility model relates to the technical field of packers, in particular to a double-acting hydraulic packer with a closable circulation channel.

Background

The hydraulic expansion type packer is connected to the underground pipe column and used for sealing and isolating the annular space between an oil pipe and an oil and gas well casing or an open hole well wall, when the annular space between the oil pipe and the oil and gas well casing or the open hole well wall needs to be sealed and isolated, the packer is connected to the underground pipe column and is driven to a designed depth, the sealing part on the packer is enabled to expand and seal the annular space between the oil casing and the annular space through hydraulic driving and other modes, the starting mode and the unsealing mode of the packers are different, the hydraulic expansion type packer is pressurized from the inside of the oil pipe after being driven to the designed depth, high-pressure liquid acts on the inner cavity of the rubber sleeve through pressure transfer pores in the packer, the rubber sleeve expands and seals the annular space between the oil casing and the annular space under the action of throttling pressure difference, when the oil pressure is released and the pressure of the oil casing is balanced, the rubber sleeve contracts back to an original shape by self resilience force to realize unsealing, and the compression type packer is driven to the designed depth and is pressurized from the inside of the oil pipe, high-pressure liquid acts on a piston mechanism through a pressure transmission hole inside the packer, under the action of throttling pressure difference, a compression rubber sleeve expands to seal an oil sleeve annulus, when oil pressure is released, the rubber sleeve is unlocked by restoring the original state of the rubber sleeve by the resilience of the rubber sleeve after the pressure of the oil sleeve is balanced, and the application of the double-acting hydraulic packer with the closable circulating channel is more and more extensive, so that the demand on the double-acting hydraulic packer with the closable circulating channel is increased day by day.

Most of the packers on the market do not have protective setting in the process of idling and transportation, and the situation that rubber rings arranged on the packers are aged and collided to cause abrasion can be caused in the process of long-time placement and transportation of the packers, so that the situation that problems occur in the use process in the later period can be caused, and therefore, the double-acting hydraulic packer with the closable circulating channel is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a double acting hydraulic packer with a closable circulation channel, which solves the problems mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a double-acting hydraulic packer that circulation channel can close, includes packer shell, rubber circle and packer center tube, packer shell left end fixedly connected with rubber circle, the packer shell right-hand member is equipped with the packer center tube, there is spacing plectane in the packer center tube outside through stopper sliding connection, there is the knee in spacing plectane upper end and lower extreme through perforation sliding connection, the knee both ends are all through spacer pin and pinhole fixedly connected with dead lever, the position of dead lever left end is in the same place through fixing nut and protecting sheathing fixed connection, use external screw rod fixed connection through the protecting sheathing connecting hole between the protecting sheathing together.

Preferably, the number of the protective shells is two, the protective shells are arranged at the outer sides of the rubber rings in an arc shape, and the protective shells are connected with the fixed rods through the arranged limiting holes.

Preferably, the number of the fixed rods is two, the fixed rods are arranged in a vertically parallel mode, the left ends of the fixed rods are arranged in a threaded mode, pin holes are formed in the inner sides of the fixed rods, and limit washers are fixedly connected to the outer sides of the fixed rods.

Preferably, the bent rod is arranged in a U shape, and the top end of the bent rod is fixedly connected with a limiting pin.

Preferably, the inner side of the central tube of the packer is provided with a limiting groove, the middle position of the limiting circular plate is provided with a circular plate central hole, and the limiting circular plate and the central tube of the packer are connected together in a sliding manner through the limiting groove and a limiting block.

Preferably, the packer central pipe is arranged at the inner side of the packer shell, and the central point of the packer central pipe and the central point of the packer shell are arranged on the same horizontal plane.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the arranged protection shell, the protection shell connecting hole and the packer shell, the rubber ring arranged on the packer can be well protected through the arranged protection shell in the whole placing and transporting process of the packer, the rubber ring can be effectively prevented from being damaged in the transporting and carrying processes, and the packer has good practical value;

2. according to the packer, the relative position of the central pipe of the packer can be stably limited in the use process through the fixed rod, the limiting circular plate, the bent rod and the limiting block, the situation that the packer is abraded and damaged due to impact and shaking can be effectively prevented in the whole transportation process of the packer, the packer has good protection performance in the transportation process, and the packer is worthy of wide popularization and use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 at A according to the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 at B according to the present invention;

FIG. 4 is a schematic view of the structure of a limiting circular plate according to the present invention;

FIG. 5 is a schematic view of a central tube configuration of the packer of the present invention.

In the figure: 1-packer shell, 2-rubber ring, 3-packer center tube, 4-protective shell, 5-protective shell connecting hole, 6-fixing rod, 7-limiting washer, 8-limiting circular plate, 9-bent rod, 10-perforation, 11-fixing nut, 12-limiting hole, 13-limiting pin, 14-pin hole, 15-limiting groove, 16-circular plate center hole and 17-limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a double-acting hydraulic packer that circulation channel can close, including packer shell 1, rubber circle 2 and

packer center tube

3, 1 left end fixedly connected with rubber circle 2 of packer shell, 1 right-hand member of packer shell is equipped with packer center tube 3, there is spacing plectane 8 in the 3 outsides of packer center tube through stopper 17 sliding connection, there is knee 9 spacing plectane 8 upper end and lower extreme through perforation 10 sliding connection, knee 9 both ends are all through

spacer pin

13 and 14 fixedly connected with dead lever 6 of pinhole, the position of 6 left ends of dead lever is in the same place through

fixing nut

11 and 4 fixed connection of protecting sheathing, use external screw rod fixed connection together through protecting sheathing connecting hole 5 between the protecting sheathing 4.

The number of the protective shells 4 is two, the protective shells 4 are arranged at the outer sides of the rubber rings 2 in an arc shape, and the protective shells 4 and the fixed rods 6 are connected together through the limiting holes 12, so that the rubber rings 2 can be stably protected in the using process; the number of the fixing rods 6 is two, the fixing rods 6 are arranged in a vertical parallel mode, the left end of each fixing rod 6 is in a threaded mode, pin holes 14 are formed in the inner sides of the fixing rods 6, limiting washers 7 are fixedly connected to the outer sides of the fixing rods 6, and the connection stability between the fixing rods 6 and the protective shell 4 can be effectively improved in the installation process; the bent rod 9 is arranged in a U shape, the position of the top end of the bent rod 9 is fixedly connected with a limiting pin 13, the stability of the device in the installation process can be improved, and meanwhile, the bent rod 9 and the fixed rod 6 can be correspondingly adjusted according to actual requirements; the inner side of the central tube 3 of the packer is provided with a limiting groove 15, the middle position of the limiting circular plate 8 is provided with a circular plate central hole 16, the limiting circular plate 8 and the central tube 3 of the packer are connected together in a sliding way through the limiting groove 15 and a limiting block 17, and the connection stability between the limiting circular plate 8 and the central tube 3 of the packer is effectively improved; the packer center tube 3 is arranged at the inner side of the packer shell 1, and the central point of the packer center tube 3 and the central point of the packer shell 1 are arranged on the same horizontal plane, so that the stability of the whole structure of the device is effectively improved.

The working process is as follows: in the process of packaging and transporting a double-acting hydraulic packer with a closable circulation channel, an operator firstly needs to install a protective shell 4 at the position outside a rubber ring 2 through an external screw, so that the rubber ring 2 arranged on the packer can be well protected through the arranged protective shell 4 in the process of integrally placing and transporting the packer, the occurrence of the condition that the rubber ring 2 is damaged in the transporting and carrying processes can be effectively prevented, the practical value is good, after the installation is finished, the operator needs to install a limiting circular plate 8 at the position outside a central tube 3 of the packer through a limiting block 17 and a limiting groove 15, after the installation is finished, a bent rod 9 and a fixed rod 7 pass through a through hole 10 formed in the upper end and the lower end of the limiting circular plate 8 and are fixedly connected with the protective shell 4 through a limiting hole 12 by using a fixing nut 11, in the process of connecting, the staff can carry out corresponding regulation through spacer pin 13 and pinhole 14, such setting can improve the convenience in the installation effectively, can play spacing effect at the in-process of installation through the spacing packing ring 7 that sets up simultaneously, such setting can carry out stable restriction to the relative position of packer center tube 3 at the in-process that uses, such setting can prevent effectively that the packer from appearing striking and rocking the condition emergence that causes inner structure wearing and tearing and damage at the in-process that transports the packer wholly, good protectiveness has to the packer in the in-process of transportation, be worth carrying out extensive popularization and use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A double-acting hydraulic packer with a closable circulation channel comprises a packer shell (1), a rubber ring (2) and a packer central tube (3), and is characterized in that: packer shell (1) left end fixedly connected with rubber circle (2), packer shell (1) right-hand member is equipped with packer center tube (3), there is spacing plectane (8) in the packer center tube (3) outside through stopper (17) sliding connection, there is knee (9) spacing plectane (8) upper end and lower extreme through perforation (10) sliding connection, knee (9) both ends are all through spacer pin (13) and pinhole (14) fixedly connected with dead lever (6), the position of dead lever (6) left end is in the same place through fixation nut (11) and protecting sheathing (4) fixed connection, use external screw rod fixed connection together through protecting sheathing connecting hole (5) between protecting sheathing (4).

2. A double acting hydraulic packer with closable circulation channel according to claim 1, characterised in that: the number of the protective shells (4) is two, the positions of the protective shells (4) arranged on the outer side of the rubber ring (2) are arc-shaped, and the protective shells (4) and the fixing rods (6) are connected together through the limiting holes (12) formed in the positions.

3. A double acting hydraulic packer with closable circulation channel according to claim 1, characterised in that: the number of the fixing rods (6) is two, the fixing rods (6) are arranged in a vertically parallel mode, the left end of each fixing rod (6) is arranged in a threaded mode, the inner side of each fixing rod (6) is provided with a pin hole (14), and the outer side of each fixing rod (6) is fixedly connected with a limiting washer (7).

4. A double acting hydraulic packer with closable circulation channel according to claim 1, characterised in that: the bent rod (9) is arranged in a U shape, and the position of the top end of the bent rod (9) is fixedly connected with a limiting pin (13).

5. A double acting hydraulic packer with closable circulation channel according to claim 1, characterised in that: spacing groove (15) have been seted up to packer center tube (3) inboard, plectane centre bore (16) have been seted up to the position in the middle of spacing plectane (8), through spacing groove (15) and stopper (17) sliding connection together between spacing plectane (8) and packer center tube (3).

6. The double acting hydraulic packer with closable circulation channel according to claim 1, wherein: the packer central pipe (3) is arranged at the inner side of the packer shell (1), and the central point of the packer central pipe (3) and the central point of the packer shell (1) are arranged on the same horizontal plane.