CN112664158A

CN112664158A - Compression hydraulic packer convenient to retrieve

Info

Publication number: CN112664158A
Application number: CN202110288809.9A
Authority: CN
Inventors: 高云东; 白东; 徐光平; 楚良允
Original assignee: Dongying Changrui Petroleum Machinery Fittings Co ltd
Current assignee: Dongying Changrui Petroleum Machinery Fittings Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-04-16
Anticipated expiration: 2041-03-18
Also published as: CN112664158B

Abstract

The utility model provides a compression hydraulic pressure packer convenient to retrieve, belong to oil well exploration production field, including the outer tube, the inside cover of outer tube is equipped with the inner tube, reserve gapped between inner tube periphery and the outer tube inner wall, the wall thickness increase of inner tube periphery lower extreme and with outer tube inner wall fixed connection, the fixed cover of outer tube upper end periphery is equipped with the top connection, the outer tube lower extreme then fixed mounting has the bottom connection, both sides fixed mounting has first fixed cover respectively about the outer tube periphery, first fixed cover has seted up first annular respectively in opposite directions one end, the sliding sleeve is equipped with to outer tube periphery sliding seal cooperation, the upper and lower both ends of sliding sleeve stretch into corresponding first annular respectively, the upper and lower both ends of sliding sleeve respectively with. The hydraulic packer disclosed by the invention not only realizes the well packing function of the existing packer, but also can realize the position fine adjustment of the packer and the autonomous escaping of the movement of simulating the 'wriggling' after being clamped, thereby greatly reducing the operation and recovery difficulty and being worthy of great popularization.

Description

Compression hydraulic packer convenient to retrieve

Technical Field

The invention belongs to the field of oil well exploration production, and particularly relates to a compression type hydraulic packer convenient to recover.

Background

Compression hydraulic pressure packer can often be used to the oil well in exploration and exploitation process, so that block the well and seal, because the well depth is many hundreds of meters even last kilometers when in actual use, hardly once put in its accurate preset position when putting in the packer, often need aboveground personnel to pump repeatedly oil pipe and carry out the position fine setting, and the heavy oil pipe that reaches hundreds of kilometers is difficult to the accurate transmission to the other end of the displacement of one end, make position adjustment work very difficult and slow, in addition when taking out the packer, the packer is because long-time fixed often can the card in the normal position, directly draw the light then lead to the packer to damage of oil pipe, heavy then directly pull off oil pipe or packer.

Disclosure of Invention

The invention provides a compression type hydraulic packer convenient to recover, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

a compression type hydraulic packer convenient to recover comprises an outer pipe, wherein an inner pipe is sleeved in the outer pipe, a gap is reserved between the periphery of the inner pipe and the inner wall of the outer pipe, the wall thickness of the lower end of the periphery of the inner pipe is increased and is fixedly connected with the inner wall of the outer pipe, an upper joint is fixedly sleeved on the periphery of the upper end of the outer pipe, a lower joint is fixedly installed at the lower end of the outer pipe, first fixing sleeves are fixedly installed on the upper side and the lower side of the periphery of the outer pipe respectively, first annular grooves are formed in opposite ends of the first fixing sleeves respectively, a sliding sleeve is installed on the periphery of the outer pipe in a sliding and sealing fit mode, the upper end and the lower end of the sliding sleeve respectively extend into the corresponding first annular grooves, first springs are fixedly connected between the upper end and the lower end of the sliding sleeve and the inner end face of the corresponding first annular grooves, the upper end and the lower end of the sliding sleeve are respectively provided with an oil inlet channel, the oil inlet channel at the lower side is communicated with the inner cavity of the rubber barrel at the lower side, the oil inlet channel at the upper side is communicated with the inner cavity of the rubber barrel at the upper side, the upper end and the lower end of the sliding sleeve are respectively provided with a pin hole towards one side of the outer pipe, the upper part of the outer pipe is transversely provided with a first through hole, a first bolt is arranged in the first through hole in a sliding sealing fit manner, the first bolt is connected with one end, facing towards the inner cavity of the outer pipe, of the first through hole through the inner pipe and the outer pipe and is communicated with a first ring groove at the lower side through a second spring, the second bolt is arranged in the second through hole in a sliding sealing fit manner, a third spring is fixedly connected between the second bolt and one end, close to the inner cavity of, the second oil inlet hole penetrates through the inner pipe and the outer pipe and is communicated with the inner cavity of the first ring groove at the lower side.

The compression type hydraulic packer convenient to recover comprises a first fixing sleeve, a second annular groove and an annular brush, wherein the first fixing sleeve is fixedly sleeved on the periphery of one opposite end of the first fixing sleeve, the second fixing sleeve is provided with the second annular groove at one opposite end of the second fixing sleeve, and the annular brush is fixedly arranged on one opposite side of an inner cavity of the second annular groove.

According to the compression type hydraulic packer convenient to recover, the periphery of the second fixing sleeve is fixedly provided with the plurality of rollers.

According to the compression type hydraulic packer convenient to recover, a plurality of ejector blocks are fixedly arranged on the periphery of the inner pipe.

The invention has the advantages that: when the hydraulic oil sealing device is used, a user puts the hydraulic oil sealing device into a preset sealing position, if the putting position of the hydraulic oil sealing device is correct, the user only needs to inject hydraulic oil with the same pressure into the inner cavities of the outer pipe and the inner pipe at the same time, the hydraulic oil is injected into the two rubber cylinders through the first oil inlet hole, the second oil inlet hole and the oil inlet channel at the same time, and the rubber cylinders expand to seal a well way, so that sealing is completed; if the position of the packer has slight error and needs to be finely adjusted downwards, a user independently injects hydraulic oil into the inner pipe, the rubber cylinder on the lower side firstly expands and clings to a well wall, along with the further increase of the hydraulic pressure in the first ring groove on the lower side, the sliding sleeve overcomes the elastic force of the first spring to slide upwards so as to reversely push the outer pipe and the inner pipe to move downwards for a short distance, the pin hole on the lower side can be aligned with the second bolt when the sliding sleeve slides upwards, the hydraulic pressure in the inner pipe overcomes the elastic force of the third spring to insert the second bolt into the pin hole on the lower side, so that the sliding sleeve can not move continuously is limited, at the moment, the user decompresses the inner pipe, the rubber cylinder firstly contracts and is disengaged from the well wall, then the third spring can pull the second bolt out of the pin hole, and finally the sliding sleeve is pulled by the first spring to restore the original position, the tension of the second spring and, the rubber cylinder is firstly reduced before the bolt retracts, and a user can continuously pull the invention downwards by means of the displacement of the rubber cylinder at the lower side only by repeating the actions for a plurality of times, so that the function of fine adjustment of the position downwards of the invention is realized; when the position of the invention needs to be finely adjusted upwards, or the invention is still clamped after the pressure relief of the two rubber cylinders is finished and can not be pulled out, a user independently injects hydraulic oil into the outer pipe, at the moment, the rubber cylinder on the upper side expands and clings to the well wall, then the sliding sleeve slides downwards to push the outer pipe and the inner pipe upwards for a short distance, and the user repeatedly performs the actions of pressing and relieving the pressure to the outer pipe to realize the fine adjustment of the upwards position or the independent 'creeping' escape; the hydraulic packer disclosed by the invention not only realizes the well packing function of the existing packer, but also can realize the position fine adjustment of the packer and the autonomous escaping of the movement of simulating the 'wriggling' after being clamped, thereby greatly reducing the operation and recovery difficulty and being worthy of great popularization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of section I of FIG. 1; fig. 3 is a partial enlarged view of ii of fig. 1.

Reference numerals: 1. the outer tube, 2, the inner tube, 3, first fixed cover, 4, the sliding sleeve, 5, the second fixed cover, 11, the top connection, 12, the lower clutch, 13, first through-hole, 14, first bolt, 15, the second spring, 16, first inlet port, 21, the kicking block, 22, the second through-hole, 23, the second bolt, 24, the third spring, 25, the second inlet port, 31, the first annular groove, 32, the first spring, 41, the crown plate, 42, the packing element, 43, the oil feed passageway, 44, the pinhole, 51, the second annular groove, 52, the annular brush, 53, the gyro wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

A compression type hydraulic packer convenient to recover is disclosed, as shown in figure 1, and comprises an outer pipe 1, an inner pipe 2 is sleeved in the outer pipe 1, a gap is reserved between the periphery of the inner pipe 2 and the inner wall of the outer pipe 1, the wall thickness of the lower end of the periphery of the inner pipe 2 is increased and is fixedly connected with the inner wall of the outer pipe 1, an upper joint 11 is fixedly sleeved on the periphery of the upper end of the outer pipe 1, a lower joint 12 is fixedly installed at the lower end of the outer pipe 1, first fixing sleeves 3 are respectively fixedly installed at the upper and lower sides of the periphery of the outer pipe 1, first annular grooves 31 are respectively arranged at the opposite ends of the first fixing sleeves 3, a sliding sleeve 4 is installed at the periphery of the outer pipe 1 in a sliding sealing fit manner, the upper and lower ends of the sliding sleeve 4 respectively extend into the corresponding first annular grooves 31, the upper and lower ends of the sliding sleeve 4, the first springs 32 on the upper and lower sides can provide opposite thrust to the sliding sleeve 4, three ring plates 41 distributed up and down are fixedly arranged on the periphery of the sliding sleeve 4, rubber cylinders 42 are respectively and fixedly arranged between two adjacent ring plates 41, each rubber cylinder 42 is annular, the upper and lower ends of each rubber cylinder 42 are respectively and fixedly connected with the corresponding ring plate 41, the upper and lower ends of the sliding sleeve 4 are respectively provided with an oil inlet channel 43, the lower oil inlet channel 43 is communicated with the inner cavity of the lower rubber cylinder 42, the upper oil inlet channel 43 is communicated with the inner cavity of the upper rubber cylinder 42, the upper and lower ends of the sliding sleeve 4 towards one side of the outer tube 1 are respectively provided with a pin hole 44, the upper part of the outer tube 1 is transversely provided with a first through hole 13, a first bolt 14 is arranged in the first through hole 13 in a sliding and sealing fit manner, the first bolt 14 and one end of the first through hole 13 towards the inner cavity of the, second spring 15 and retaining ring fixed connection, second through-hole 22 has transversely been seted up to inner tube 2 lower part, second through-hole 22 runs through inner tube 2 and outer tube 1 and communicates with each other with the first annular 31 of downside, sliding seal cooperation is equipped with second bolt 23 in second through-hole 22, fixedly connected with third spring 24 between second bolt 23 and the second through-hole 22 near the inner chamber one end of inner tube 2, the same fixed mounting of second through-hole 22 inner chamber towards inner tube 2 inner chamber one side has the retaining ring, third spring 24 and retaining ring fixed connection, first inlet port 16 has transversely been seted up to outer tube 1 upper end, first inlet port 16 communicates with each other with the first annular 31 inner chamber of upside, second inlet port 25 has been seted up to inner tube 2 lower extreme, second inlet port 25 runs through inner tube 2 and outer tube 1 and communicates with each other with the first annular 31 inner. When the hydraulic oil sealing device is used, a user puts the hydraulic oil sealing device into a preset sealing position, if the putting position of the hydraulic oil sealing device is correct, the user only needs to inject hydraulic oil with the same pressure into the inner cavities of the outer pipe 1 and the inner pipe 2 at the same time, the hydraulic oil is injected into the two rubber cylinders 42 through the first oil inlet hole 16, the second oil inlet hole 25 and the oil inlet channel 43 at the same time, and the rubber cylinders 42 expand to seal a well, so that sealing is completed; if the position of the packer has slight error and needs to be finely adjusted downwards, a user independently injects hydraulic oil into the inner pipe 2, the rubber sleeve 42 on the lower side firstly expands and clings to the well wall, along with the further increase of the hydraulic pressure in the first annular groove 31 on the lower side, the sliding sleeve 4 can overcome the elastic force of the first spring 32 to slide upwards, so that the outer pipe 1 and the inner pipe 2 are reversely pushed to move downwards for a short distance, the pin hole 44 on the lower side can be aligned with the second bolt 23 when the sliding sleeve 4 slides upwards, the hydraulic pressure in the inner pipe 2 can overcome the elastic force of the third spring 24 to insert the second bolt 23 into the pin hole 44 on the lower side, so that the sliding sleeve 4 is limited from continuing moving, at the moment, the user relieves the pressure on the inner pipe 2, the rubber sleeve 42 firstly contracts to be disengaged from the well wall, then the third spring 24 can pull the second bolt 23 out of the pin hole 44, and finally the sliding sleeve 4 is pulled by the first spring 32 to restore to the original position, the tension of the second spring, the rubber cylinder 42 is firstly shrunk before the bolt retracts, and a user can continuously pull the bolt downwards by means of the displacement of the lower rubber cylinder 42 only by repeating the actions for a plurality of times, so that the function of fine adjustment of the position downwards of the bolt is realized; when the position of the invention needs to be finely adjusted upwards, or the invention is still clamped after the pressure relief of the two rubber cylinders 42 is finished and can not be pulled out, a user independently injects hydraulic oil into the outer pipe 1, at the moment, the rubber cylinder 42 on the upper side expands and clings to the well wall, then the sliding sleeve 4 slides downwards to push the outer pipe 1 and the inner pipe 2 upwards for a short distance, and the user repeatedly performs the actions of pressing and pressure relief on the outer pipe 1 to realize the fine adjustment of the upwards position or the self-help creeping escape; the hydraulic packer disclosed by the invention not only realizes the well packing function of the existing packer, but also can realize the position fine adjustment of the packer and the autonomous escaping of the movement of simulating the 'wriggling' after being clamped, thereby greatly reducing the operation and recovery difficulty and being worthy of great popularization.

Specifically, as shown in fig. 1, the periphery of the opposite end of the first fixing sleeve 3 in this embodiment is respectively and fixedly sleeved with a second fixing sleeve 5, the opposite end of the second fixing sleeve 5 is provided with a second annular groove 51, the second annular groove 51 can accommodate the ring plate 41 and the rubber cylinder 42 to enter, and one opposite side of the inner cavity of the second annular groove 51 is respectively and fixedly provided with an annular brush 52. When the packing element 42 of upside expands, when the sliding sleeve 4 slided downwards, the packing element 42 that the downside is not expanded can slide into downside second ring groove 51, and annular brush 52 of downside can clean the grit on downside packing element 42 surface, avoids when follow-up this packing element 42 expands, and the packing element 42 surface is pressed against the wound by the grit, and when the sliding sleeve 4 slided upwards, annular brush 52 of upside can clean upside packing element 42 surface again on the same way.

Specifically, as shown in fig. 1, a plurality of rollers 53 are fixedly mounted on the periphery of the second fixing sleeve 5 in the embodiment. When the rubber sleeve is moved in the well, the second fixing sleeve 5 can play a role in guiding, collision and friction between the rubber sleeve 42 and the well wall are avoided, and the roller 53 can further reduce the friction force between the second fixing sleeve 5 and the well wall.

Further, as shown in fig. 1, a plurality of top blocks 21 are fixedly installed on the outer periphery of the inner tube 2 according to the present embodiment. The top block 21 serves to maintain a gap between the inner cavity of the outer tube 1 and the outer circumference of the upper portion of the inner tube 2.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a compression hydraulic pressure packer convenient to retrieve, includes outer tube (1), and the inside cover of outer tube (1) is equipped with inner tube (2), reserves gapped between inner tube (2) periphery and outer tube (1) inner wall, the wall thickness increase of inner tube (2) periphery lower extreme and with outer tube (1) inner wall fixed connection, the fixed cover in outer tube (1) upper end periphery is equipped with and connects (11), then fixed mounting has lower clutch (12), its characterized in that of outer tube (1) lower extreme: the upper side and the lower side of the periphery of the outer pipe (1) are respectively and fixedly provided with a first fixing sleeve (3), one opposite end of the first fixing sleeve (3) is respectively provided with a first annular groove (31), the periphery of the outer pipe (1) is provided with a sliding sleeve (4) in a sliding sealing fit manner, the upper end and the lower end of the sliding sleeve (4) respectively extend into the corresponding first annular groove (31), the upper end and the lower end of the sliding sleeve (4) are respectively in a sliding sealing fit manner with the inner cavity of the corresponding first annular groove (31), a first spring (32) is fixedly connected between the upper end and the lower end of the sliding sleeve (4) and the inner end surface of the corresponding first annular groove (31), three ring plates (41) which are distributed up and down are fixedly arranged on the periphery of the sliding sleeve (4), a rubber cylinder (42) is respectively and fixedly arranged between the two adjacent ring plates (41), the upper end and the lower end of the, an oil inlet channel (43) on the upper side is communicated with an inner cavity of an upper side rubber barrel (42), pin holes (44) are respectively formed in the upper end and the lower end of a sliding sleeve (4) towards one side of an outer pipe (1), a first through hole (13) is transversely formed in the upper portion of the outer pipe (1), a first bolt (14) is arranged in the first through hole (13) in a sliding sealing fit mode, the first bolt (14) and one end, facing towards the inner cavity of the outer pipe (1), of the first through hole (13) are connected through a second spring (15), a second through hole (22) is transversely formed in the lower portion of the inner pipe (2), the second through hole (22) penetrates through the inner pipe (2) and the outer pipe (1) and is communicated with a first ring groove (31) on the lower side, a second bolt (23) is arranged in the second through hole (22) in a sliding sealing fit mode, a third spring (24) is fixedly connected between the second bolt (23) and one end, close, the first oil inlet hole (16) is communicated with the inner cavity of the upper first ring groove (31), the lower end of the inner tube (2) is provided with a second oil inlet hole (25), and the second oil inlet hole (25) penetrates through the inner tube (2) and the outer tube (1) and is communicated with the inner cavity of the lower first ring groove (31).

2. A compressive hydraulic packer to facilitate recovery according to claim 1, wherein: the periphery of one end of the first fixed sleeve (3) in opposite directions is respectively fixedly sleeved with a second fixed sleeve (5), one end of the second fixed sleeve (5) in opposite directions is provided with a second annular groove (51), and one side of the inner cavity of the second annular groove (51) in opposite directions is respectively fixedly provided with an annular brush (52).

3. A compressive hydraulic packer to facilitate recovery according to claim 2, wherein: and a plurality of rollers (53) are fixedly arranged on the periphery of the second fixing sleeve (5).

4. A compressive hydraulic packer to facilitate recovery according to claim 1, wherein: the periphery of the inner pipe (2) is fixedly provided with a plurality of ejector blocks (21).