CN210948580U

CN210948580U - Rubber cylinder protection equipment

Info

Publication number: CN210948580U
Application number: CN201920954322.8U
Authority: CN
Inventors: 李志刚; 吕坤; 刘文豹; 王海涛; 俞榕
Original assignee: Tianjin New Territory Petroleum Technology Co ltd
Current assignee: Tianjin New Territory Petroleum Technology Co ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-07-07
Anticipated expiration: 2029-06-24

Abstract

The utility model provides a packing element protection equipment, including oil pipe, the packing element, positioner and protection device, positioner, protection device and packing element cup joint with oil pipe in proper order, positioner and protection device joint, protection device includes snap ring and shifting ring, snap ring fixedly connected with shell fragment, the shell fragment is provided with the fixture block, the snap ring is equipped with the cell body, fixedly connected with sliding shaft in the cell body, sliding connection has the third slider on the sliding shaft, fixedly connected with axis of rotation on the third slider, the axis of rotation rotates and is connected with the turning block, the first slider of turning block fixedly connected with, first slider is equipped with spout and draw-in groove, draw-in groove and fixture block looks adaptation, spout sliding connection has the second slider, second slider and shifting ring fixed connection, the utility model discloses have simple to operate, be difficult for the displacement, effectively protect the packing element, prevent that packing element shoulder from damaging because too outstanding, More adaptable to the needs of users, and the like.

Description

Rubber cylinder protection equipment

Technical Field

The utility model relates to an oil recovery machinery, concretely relates to packing element protection equipment.

Background

With the rapid development of national economy, the demand for primary energy sources such as petroleum and natural gas is increasing. The development focus of global oil and gas resources gradually turns to unconventional oil and gas reservoirs which are low in permeability and difficult to use, including compact sandstone oil and gas reservoirs, shale oil and gas reservoirs, coal bed gas and the like. Unconventional resources previously considered to have no economic value for exploitation are now being developed commercially on a large scale to meet the growing energy demand and to achieve considerable economic benefits, such as shale gas exploitation in north america. The development cost is greatly reduced, the single-well yield is improved, and the stable production period is prolonged by the technical progress, particularly the scale application of the horizontal well segmented reservoir transformation technology.

The packer is classified according to the setting mode, and the conventional reservoir transformation packer is divided into a mechanical setting type packer and a hydraulic setting type packer. The former can only be used for a vertical well, but not for a horizontal well and a highly deviated well. The latter structure is very complicated, and site operation has the risk of setting failure, and in the open hole environment meeting well diameter size requirement height, the position that the well diameter is bigger can not set, and the inside drift diameter is also little, is unfavorable for later stage downhole measure operation. The structures adopted by the packers for protecting and improving the integrity of the rubber cylinders are complex, and the capacity of bearing high differential pressure is limited.

In the production process, the working pressure difference born by the upper end and the lower end of the rubber sleeve is an alternating load, and the axial compression force formed by the working pressure difference is far greater than the setting load of the packer; therefore, when the packer is in a setting state, the rubber sleeve can be further compressed under the action of working pressure difference, so that the shoulder parts of the rubber sleeve at the two ends of the rubber sleeve flow to the annular space between the pressure bearing seat and the sleeve, the protruding deformation of the shoulder part of the rubber sleeve is aggravated, the shoulder part of the rubber sleeve is easily torn and damaged due to excessive extrusion, the sealing formed by the rubber sleeve can not bear high pressure, and the sealing performance of the packer is remarkably reduced. At present, the requirements of an oil-water well on the service performance of a packer are higher and higher, and it is more and more important to prevent a packer rubber cylinder from being deformed, torn and damaged and to improve the sealing performance of the rubber cylinder.

Disclosure of Invention

The to-be-solved problem of the utility model is to provide a simple to operate is difficult for taking place the displacement, effectively protects the packing element, prevents a packing element protection device of packing element shoulder owing to too outstanding and damage.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a packing element protection equipment, includes oil pipe, packing element, positioner and protection device, positioner, protection device and packing element in proper order with oil pipe cup joints, positioner with the protection device joint, protection device includes snap ring and shifting ring, snap ring fixedly connected with shell fragment, the shell fragment is provided with the fixture block, the snap ring is equipped with the cell body, fixedly connected with sliding shaft in the cell body, sliding connection has the third slider on the sliding shaft, fixedly connected with axis of rotation on the third slider, the axis of rotation rotates and is connected with the turning block, the first slider of turning block fixedly connected with, first slider is equipped with spout and draw-in groove, the draw-in groove with fixture block looks adaptation, spout sliding connection has the second slider, the second slider with shifting ring fixed connection.

Furthermore, the protection device is arranged at two ends of the rubber cylinder and clamped with the rubber cylinder.

Furthermore, the top surface of the first sliding block is a plane, a first inclined surface is arranged on the bottom surface of the first sliding block, and a second inclined surface matched with the first inclined surface is arranged on the clamping ring.

Furthermore, the cross sections of the clamping grooves and the clamping blocks are parallelogram.

Furthermore, the snap ring is provided with a supporting block, and the supporting block is arranged at the lower end of the second inclined plane.

Furthermore, the moving ring is provided with a positioning groove, and the positioning groove is matched with the supporting block.

Further, the third sliding block is perpendicular to the rotating shaft.

Furthermore, the cross section of the sliding groove is an arc taking the circle center position of the cross section of the third sliding block as the center.

Further, the cross section of the second sliding block is T-shaped.

Furthermore, the elastic sheet is made of elastic metal.

Compared with the prior art, the utility model has the advantages and positive effect be:

1. the utility model discloses a draw-in groove, the fixture block, the shell fragment, first slider, the second slider, first inclined plane, the second inclined plane, the snap ring, the setting of shift ring, it can be close to the snap ring to make the second slider transversely promote first slider, first slider is along the in-process of second inclined plane motion, first slider produces relative motion with the shell fragment, make the shell fragment supported by first slider, when first slider slides the highest point on second inclined plane, the fixture block card is gone into and is fixed with it in the draw-in groove, make first slider keep at operating condition, effectively protect the packing element, prevent that the packing element shoulder from excessively overflowing and causing the damage, the wholeness ability of whole device has been improved greatly, more can satisfy user's needs.

2. The utility model discloses a spout, the third slider, the second slider, the setting of first slider, make the second slider keep in the spout always at the rotation in-process of first slider, when the central point of first slider use third slider cross-section rotates as the centre of a circle, the tail end perk of first slider, the spout produces relative motion with the second slider, the second slider slides to the other end in the one end of spout, and the second slider can continuously extrude first slider along second inclined plane motion under the extrusion of shift ring, the wholeness ability of whole device has been improved greatly, more can satisfy user's needs.

3. The utility model discloses the setting of constant head tank and supporting shoe can provide the space of removal for the shifting ring, makes the shifting ring receive after the extrusion can produce relative motion with the snap ring to make the device work, and be unlikely to make protection device influence result of use too greatly, or cause the material extravagant, improved the wholeness ability of whole device greatly, more can satisfy user's needs.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a working state diagram of the present invention;

FIG. 4 is an enlarged view of the utility model at A;

FIG. 5 is an enlarged view of the utility model at B;

FIG. 6 is a packer construction diagram of the present invention;

FIG. 7 is a structural view of a third slider;

fig. 8 is an expanded view of the cartridge without the protective device.

In the figure: the device comprises an oil pipe-1, a rubber cylinder-2, a positioning device-3, a protection device-4, a snap ring-5, a moving ring-6, a spring sheet-7, a clamping block-8, a groove body-9, a sliding shaft-10, a third sliding block-11, a rotating block-12, a first sliding block-13, a sliding groove-14, a clamping groove-15, a second sliding block-16, a first inclined surface-17, a second inclined surface-18, a supporting block-19, a positioning groove-20, a hydraulic cylinder-21, a shear pin-22, a cone-23, a casing slip-24, a piston-25, a locking ring-26, a slip seat-27, a shear blade-28, a split claw-29 and a rotating shaft-30.

Detailed Description

For a better understanding of the present invention, the following further description is given in conjunction with the following embodiments and accompanying drawings.

As shown in fig. 1-8, a rubber sleeve protection device comprises an oil pipe 1, a rubber sleeve 2, a positioning device 3 and a protection device 4, wherein the positioning device 3, the protection device 4 and the rubber sleeve 2 are sequentially sleeved with the oil pipe 1, the positioning device 3 is clamped with the protection device 4, the positioning device 3 is used for fixedly connecting the oil pipe 1 with the oil pipe 1 above and below the oil pipe, the protection device 4 comprises a snap ring 5 and a moving ring 6, the snap ring 5 is fixedly connected with an elastic sheet 7, the elastic sheet 7 is made of elastic metal, the elastic sheet 7 can be bent under the extrusion of a first sliding block 13 and cannot be damaged due to bending stress, the elastic sheet 7 is provided with a clamping block 8, the snap ring 5 is provided with a groove body 9, a sliding shaft 10 is fixedly connected in the groove body 9, the sliding shaft 10 is matched with the first sliding block 9, the sliding shaft 10 can limit the third sliding block 11, thereby limiting the first sliding, the third sliding block 11 is also protected, the third sliding block 11 is prevented from being damaged due to collision, the sliding shaft 10 is connected with the third sliding block 11 in a sliding mode, the third sliding block 11 is fixedly connected with the rotating shaft 30, the third sliding block 11 is perpendicular to the rotating shaft 30, the rotating shaft 30 is connected with the rotating block 12 in a rotating mode, the rotating block 12 is fixedly connected with the first sliding block 13, the third sliding block 11 can enable the first sliding block 13 to move axially along the sliding shaft 10, the rotating block 12 is matched with the rotating shaft 30, the first sliding block 13 can enable the first sliding block 13 to rotate in the radial direction of the sliding shaft 10 while moving axially, the first sliding block 13 is provided with a sliding groove 14 and a clamping groove 15, the clamping groove 15 is matched with the clamping block 8, the sliding groove 14 is connected with the second sliding block 16 in a sliding mode, the second sliding block 16 is fixedly connected with the moving ring 6, during seating, the hydraulic cylinder 21 works to extrude the moving ring 6 while the rubber, the moving ring 6 is made to approach the snap ring 5, so that the second slider 16 laterally pushes the first slider 13, the top surface of the first slider 13 is a plane, the bottom surface is provided with a first inclined surface 17, the snap ring 5 is provided with a second inclined surface 18 matched with the first inclined surface 17, so that the first slider 13 moves along the second inclined surface 18, so that the third slider 11 horizontally moves along the sliding shaft 10, when the first slider 13 slides to the high position of the second inclined surface 18, the first slider 13 rotates around the central point of the section of the rotating shaft 30, so that the tail end of the first slider 13 tilts until the supporting block 19 completely enters the positioning groove 20, the first slider 13 slides to the highest position of the second inclined surface 18, during the movement of the first slider 13 along the second inclined surface 18, the first slider 13 and the elastic sheet 7 generate relative movement, so that the elastic sheet 7 is supported by the first slider 13, when the first slider 13 slides to the highest position of the second inclined surface 18, the clamping block 8 of the elastic sheet 7 is clamped into the clamping groove 15 of the first sliding block 13, and the cross sections of the clamping groove 15 and the clamping block 8 are parallelogram, so that the clamping groove 15 can be effectively fixed by the clamping block 8, the first sliding block 13 is kept in a working state, the rubber cylinder is effectively protected, and the damage caused by excessive overflow of the shoulder of the rubber cylinder is prevented.

Protection device 4 is located packing element 2 both ends, and protection device 4 can be followed upper and lower both ends protection packing element with 2 joint protection device 4 of packing element, prevents that the packing element from excessively spilling over because of the compression.

The snap ring 5 is provided with a supporting block 19, the supporting block 19 is arranged at the lower end of the second inclined plane 18, the moving ring 6 is provided with a positioning groove 20, the positioning groove 20 is matched with the supporting block 19, the supporting block 19 and the positioning groove 20 are arranged to provide a moving space for the moving ring 6, and the situation that the protective device greatly affects the use effect or causes material waste is avoided.

The cross section of the sliding groove 14 is an arc with the center position of the cross section of the third slider 11 as the center, so that the second slider 16 is always kept in the sliding groove 14 in the rotating process of the first slider 13, when the first slider 13 rotates around the center point of the cross section of the rotating shaft 10 under the action of the rotating block 12, the tail end of the first slider 13 tilts, the sliding groove 14 and the second slider 16 generate relative motion, the second slider 16 slides to the other end at one end of the sliding groove 14, and the second slider 16 can continuously extrude the first slider 13 to move along the second inclined surface 18 under the extrusion of the moving ring 6.

The second slider 16 has a T-shaped cross section to prevent the second slider 16 from falling off the chute 14.

The hydraulic cylinder 21 is sleeved with the oil pipe 1, a piston 25 is arranged in the hydraulic cylinder 21, a locking ring 26 is arranged on the piston 25, one end of the piston 25 is fixedly connected with the protection device 4, the other end of the piston 25 is fixedly connected with a split claw 29, the split claw 29 penetrates through the shell of the hydraulic cylinder 21 and is fixedly connected with the cone 23, the cone 23 is clamped with the casing slip 24, the casing slip 24 is a tool for preventing the drilling tool from sliding downwards when being buckled up or buckled down in the oil and natural gas drilling operation, the bottom end of the casing slip 24 is fixedly connected with a slip seat 27, a shear blade 28 is inserted in the slip seat 27, the shear blade 28 is fixedly connected with the oil pipe 1, the packer is conveyed to a designed well section by the oil pipe 1, the shear pin 22 is cut when the seat is sealed when the oil pipe 1 is pressurized, the piston 25 drives the shell of the hydraulic cylinder 21 to move upwards to compress the rubber cylinder 2, and the split claw 29 is released, under the push of piston 25, down promote centrum 23, strut sleeve pipe slips 24, bite the sleeve pipe wall, when pressure increases gradually, packing element 2 is compressed gradually, sealed oil jacket annular space, and hydraulic cylinder 21 casing is tightly locked by lock ring 26 this moment, makes packing element 2 can't rebound, is in airtight state all the time.

The working process of the utility model is as follows:

when the packer is used, the packer is conveyed to a designed well section by using the oil pipe 1, then the oil pipe 1 is pressurized, the shear pin 22 is prevented from being sheared during setting, the piston 25 drives the shell of the hydraulic cylinder 21 to ascend to compress the rubber cylinder 2, the split claw 29 is released, the cone 23 is pushed downwards under the pushing of the piston 25, the casing slip 24 is expanded to bite the casing wall, the rubber cylinder 2 is gradually compressed when the pressure is gradually increased, the moving ring 6 is extruded while the rubber cylinder 2 is compressed, the moving ring 6 is close to the snap ring 5, so that the second slide block 16 transversely pushes the first slide block 13, the first slide block 13 moves along the second inclined plane 18, the third slide block 11 horizontally moves along the sliding shaft 10 to drive the first slide block 13 to horizontally move along the sliding shaft 10, when the first slide block 13 slides to the high position of the second inclined plane 18, the center point of the section of the rotating shaft 30 of the first slide block 13 is rotated as the circle center, make the tail end perk of first slider 13, first slider 13 produces relative motion with shell fragment 7, make shell fragment 7 supported by first slider 13, until supporting shoe 19 enters into constant head tank 20 completely, first slider 13 slides the highest point on second inclined plane 18, fixture block 8 card of shell fragment 7 is gone into in draw-in groove 15 of first slider 13, make first slider 13 keep fixed, thereby protect the shoulder of packing element 2, prevent that packing element 2 from excessively overflowing when sealed oil jacket annular space, hydraulic cylinder 21 casing is tightly locked by lock ring 26 this moment, make packing element 2 can't rebound, be in airtight state all the time.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. A rubber cylinder protection equipment which characterized in that: comprises an oil pipe (1), a rubber sleeve (2), a positioning device (3) and a protection device (4), wherein the positioning device (3), the protection device (4) and the rubber sleeve (2) are sequentially sleeved with the oil pipe (1), the positioning device (3) is connected with the protection device (4) in a clamping manner, the protection device (4) comprises a clamping ring (5) and a moving ring (6), the clamping ring (5) is fixedly connected with an elastic piece (7), the elastic piece (7) is provided with a clamping block (8), the clamping ring (5) is provided with a groove body (9), a sliding shaft (10) is fixedly connected in the groove body (9), a third sliding block (11) is connected on the sliding shaft (10) in a sliding manner, a rotating shaft (30) is fixedly connected on the third sliding block (11), the rotating shaft (30) is rotatably connected with a rotating block (12), and the rotating block (12) is fixedly connected with a first sliding block (13, first slider (13) are equipped with spout (14) and draw-in groove (15), draw-in groove (15) with fixture block (8) looks adaptation, spout (14) sliding connection has second slider (16), second slider (16) with shift ring (6) fixed connection.

2. The cartridge protection apparatus of claim 1, wherein: protection device (4) are located packing element (2) both ends, protection device (4) with packing element (2) joint.

3. The cartridge protection apparatus of claim 1, wherein: the top surface of the first sliding block (13) is a plane, a first inclined surface (17) is arranged on the bottom surface of the first sliding block, and a second inclined surface (18) matched with the first inclined surface (17) is arranged on the clamping ring (5).

4. The cartridge protection apparatus of claim 1, wherein: the cross sections of the clamping groove (15) and the clamping block (8) are parallelogram.

5. A cartridge protection apparatus as claimed in claim 3, wherein: the snap ring (5) is provided with a supporting block (19), and the supporting block (19) is arranged at the lower end of the second inclined plane (18).

6. The cartridge protection apparatus of claim 5, wherein: the moving ring (6) is provided with a positioning groove (20), and the positioning groove (20) is matched with the supporting block (19).

7. The cartridge protection apparatus of claim 1, wherein: the third sliding block (11) is perpendicular to the rotating shaft (30).

8. The cartridge protection apparatus of claim 1, wherein: the cross section of the sliding chute (14) is an arc taking the circle center position of the cross section of the third sliding block (11) as the center.

9. The cartridge protection apparatus of claim 1, wherein: the cross section of the second sliding block (16) is T-shaped.

10. The cartridge protection apparatus of claim 1, wherein: the elastic sheet (7) is made of elastic metal.