CN119062272A - A high temperature resistant retrievable downhole packer - Google Patents
A high temperature resistant retrievable downhole packer Download PDFInfo
- Publication number
- CN119062272A CN119062272A CN202411295347.3A CN202411295347A CN119062272A CN 119062272 A CN119062272 A CN 119062272A CN 202411295347 A CN202411295347 A CN 202411295347A CN 119062272 A CN119062272 A CN 119062272A
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- Prior art keywords
- wall
- fixedly connected
- pipe
- assembly shell
- plate
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- 229920001971 elastomer Polymers 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 238000004873 anchoring Methods 0.000 claims abstract description 50
- 230000000903 blocking effect Effects 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims 2
- 238000005086 pumping Methods 0.000 abstract description 8
- 239000003129 oil well Substances 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 235000019994 cava Nutrition 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 13
- 239000010720 hydraulic oil Substances 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 230000001427 coherent effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
Abstract
本发明公开了一种耐高温的可回收井下封隔器，包括第一组装壳体，所述第一组装壳体的内壁固定连接有第二组装壳体，所述第二组装壳体的内壁活动连接有输油管，所述第二组装壳体的外壁设置有卡瓦部，所述卡瓦部的底部外壁固定连接有多个封堵胶筒、耐高温胶筒和封隔板，其中，卡瓦部分为锚固结构及封堵结构，本发明中，将本发明下放至油井预定抽泵位置后，通过对封堵胶筒和耐高温胶筒进行加压完成对井下通道的分层封堵，并且可以同步展开锚固结构将本发明涨紧固定在井下通道，可以防止泵油时产生振动导致本发明在井下通道产生松脱，并且在锚固结构固定后，配合封堵结构形成二级分层封堵，进一步加强本发明的结构稳定性。
The present invention discloses a high-temperature resistant recoverable downhole sealer, comprising a first assembly shell, the inner wall of the first assembly shell is fixedly connected to a second assembly shell, the inner wall of the second assembly shell is movably connected to an oil pipeline, the outer wall of the second assembly shell is provided with a cava portion, the bottom outer wall of the cava portion is fixedly connected to a plurality of sealing rubber cylinders, high-temperature resistant rubber cylinders and sealing plates, wherein the cava portion is an anchoring structure and a sealing structure. In the present invention, after the present invention is lowered to a predetermined pumping position of the oil well, the layered sealing of the downhole channel is completed by pressurizing the sealing rubber cylinder and the high-temperature resistant rubber cylinder, and the anchoring structure can be simultaneously deployed to tighten and fix the present invention in the downhole channel, which can prevent the present invention from loosening in the downhole channel due to vibration generated during oil pumping, and after the anchoring structure is fixed, it cooperates with the sealing structure to form a secondary layered sealing, thereby further enhancing the structural stability of the present invention.
Description
Technical Field
The invention belongs to the technical field of packers, and particularly relates to a high-temperature-resistant recyclable downhole packer.
Background
The downhole packer refers to a downhole tool connected to a downhole tubular column and used for sealing the annular space between an oil-isolating pipe and an oil-gas well casing or an open hole well wall, the length of a rubber cylinder is shortened and the diameter of the rubber cylinder is enlarged through the action of external force to seal oil-ring space, and the upper and lower oil (gas and water) layers of the packer are separated, so that the layered test, layered oil extraction, layered transformation and water layer blocking of the oil and water well are realized. The method is widely applied to drilling, well cementation, testing and well completion, and can be used for oil and gas well production, water (gas) injection, interval packing, separate injection and separate production, multilayer testing, yield increase measure operation and the like.
For example, the utility model discloses a high temperature resistant and pressure resistant packer is adopted in oil drilling of national patent publication No. CN113236178A, including first kludge, the lower extreme fixedly connected with packing element of first kludge, the upper end sliding connection of first kludge has the pipe that applies pressure, the pressure is equipped with the pressure and is warp the component to the bottom of pipe, be provided with the supporting ring between pressure and warp the component and the packing element, the supporting ring has deformability, thereby can laminate the packing element more, thereby can improve the leakproofness of packing element, the pressure and warp the component after the deformation, drive fagging and interior sliding plate expansion through the inside elastomer of supporting ring, after fagging and interior sliding plate expansion, the diameter expansion of supporting ring grow, thereby along the folding groove expansion deformation of packing element, fix the packing element.
However, the conventional device has the following problems in use:
The conventional packer is usually fixed by directly propping against the inner wall of the underground passage by using a supporting structure, and when the well pipe pump vibrates up and down, the packer may be loosened and slipped, which affects the tightness, and the stability of the supporting structure is still to be enhanced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the high-temperature-resistant recyclable underground packer which has the advantages of further improving the stability and the overall tightness of a supporting structure.
The technical scheme is that the high-temperature-resistant recyclable underground packer comprises a first assembly shell, wherein the inner wall of the first assembly shell is fixedly connected with a second assembly shell, the inner wall of the second assembly shell is movably connected with an oil delivery pipe, the outer wall of the second assembly shell is provided with a slip part, the outer wall of the bottom of the slip part is fixedly connected with a plurality of blocking rubber barrels, high-temperature-resistant rubber barrels and a blocking plate, the slip part comprises an anchoring structure and a blocking structure, the anchoring structure comprises a blocking ring, a plurality of groups of anchoring plates, a pressing plate, a connecting bracket, a multistage threaded sleeve rod and a limiting roller, and the blocking structure comprises an elastic sealing rubber barrel and an elastic folding rubber ring.
Preferably, the second assembly shell comprises a pressing sleeve and a protection pipe, the inner wall outer wall of the sealing connecting ring is movably connected with the outer wall of the protection pipe, a plurality of groups of the outer walls of one side of the connecting support are fixedly connected with the outer wall of the periphery of the protection pipe respectively, a plurality of the top outer walls of the pressing plates are fixedly connected with the bottom outer wall of the sealing connecting ring, the outer walls of the periphery of the pressing plates are slidably clamped with the inner wall of the connecting support, one end outer wall of the multistage thread loop bar is fixedly connected with the outer wall of the pressing plates, one end outer wall of the multistage thread loop bar far away from the pressing plates is fixedly connected with the inner shaft sleeve of the limiting roller, a plurality of groups of the inner walls of the anchoring plates are provided with anticlockwise thread grooves, the inner walls of the anticlockwise thread grooves are movably connected with the outer walls of the limiting roller, and the inner walls of the anticlockwise thread grooves are provided with limiting clamping grooves.
Preferably, the outer wall of the anchoring plate is provided with clockwise thread grooves, the outer wall of the anchoring plate is provided with a plurality of groups of mutually coherent lines, the inner wall of the anchoring plate is provided with a plurality of groups of mutually coherent lines, the multi-stage thread loop bars are located on the pressing plate and are different in height from the height level of the counter-clockwise thread grooves on the opposite sides.
Preferably, the outer wall fixedly connected with connecting bearing of protecting tube, the inner axle sleeve of connecting bearing and the outer wall fixedly connected with of protecting tube, the outer axle sleeve top outer wall fixedly connected with of connecting bearing accepts the base, a plurality of spacing guide rails have been seted up to the top outer wall of accepting the base, the bottom outer wall fixedly connected with fixed block of anchor plate, the bottom outer wall fixedly connected with slider of fixed block, the outer wall and the inner wall sliding connection of spacing guide rail of slider.
Preferably, the outer walls of two sides of the elastic folding rubber ring are fixedly connected with the outer wall of one side of the adjacent side anchoring plate respectively, the outer walls of the anchoring plate and the elastic folding rubber ring are fixedly connected with the elastic sealing rubber cylinder, the outer walls of the tops of the anchoring plate and the elastic folding rubber ring are fixedly connected with the outer wall of the bottom of the sealing ring through the elastic sealing rubber cylinder, and the outer walls of the bottoms of the anchoring plate and the elastic folding rubber ring are fixedly connected with the outer wall of the protection tube through the elastic sealing rubber cylinder.
Preferably, the oil delivery pipe comprises a pipe body and a retention end, a first installation channel is formed in the outer wall of the top of the first assembly shell, the outer wall of the retention end is movably connected with the inner wall of the first installation channel, a second installation channel is formed in the outer wall of the bottom of the first installation channel, the outer wall of the pipe body is movably connected with the inner wall of the second installation channel, an installation inner cavity is formed in the outer wall of the bottom of the first assembly shell, and the outer wall of the second assembly shell is fixedly connected with the inner wall of the installation inner cavity.
Preferably, the outer wall of body and the inner wall swing joint of protection pipe, the hydraulic pressure chamber has been seted up to the bottom outer wall of sleeve pipe that applies pressure, the inner wall of hydraulic pressure chamber is provided with the bottom plate, the top outer wall fixedly connected with shutoff cushion of bottom plate, the outer wall of shutoff cushion and the inner wall sliding connection of hydraulic pressure chamber, the bottom outer wall fixedly connected with graphite ring plate of bottom plate, the bottom outer wall of graphite ring plate and the top outer wall swing joint of seal ring, the intercommunicating pore has all been seted up to the both sides outer wall of first equipment casing, place the chamber has been seted up to the inner wall of first equipment casing, the inner wall fixedly connected with first hydraulic pipe of intercommunicating pore, the one end inner wall of first hydraulic pipe is linked together with the inner wall of hydraulic pressure chamber through the sleeve pipe that applies pressure, the outer wall fixedly connected with first governing valve of first hydraulic pipe.
Preferably, the pressing sleeve and the bottom plate are both in a C-shaped structure, and a through channel is formed.
Preferably, the outer wall of the first assembly shell is fixedly connected with a second hydraulic pipe communicated with the inner wall of the elastic sealing rubber cylinder through a communication hole and a penetrating channel, and the outer wall of the second hydraulic pipe is fixedly connected with a second regulating valve.
Compared with the prior art, the invention has the beneficial effects that:
In the invention, after the invention is lowered to the preset pumping position of the oil well, the blocking rubber cylinder and the high-temperature resistant rubber cylinder are pressurized to complete the layered blocking of the underground passage, and the anchoring structure can be synchronously unfolded to fix the invention in the underground passage, so that the invention can be prevented from loosening in the underground passage due to vibration generated during pumping oil, the stability of the anchoring structure is ensured, and after the anchoring structure is fixed, the two-stage layered blocking is formed by matching with the blocking structure, thereby further enhancing the structural stability of the invention.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the first assembled housing of the present invention;
FIG. 3 is a schematic view of the internal structure of a second assembled housing according to the present invention;
FIG. 4 is a schematic view of the structure of the second assembled housing in the upper left direction;
FIG. 5 is a schematic view of the internal structure of the placement chamber of the present invention;
FIG. 6 is a schematic view of the internal structure of an anchorage plate of the present invention;
FIG. 7 is a schematic view of a multi-stage threaded shank configuration of the present invention;
FIG. 8 is a schematic diagram of an explosion of the structure of the present invention;
Fig. 9 is an exploded schematic view of a semi-sectional structure of the present invention.
In the figure:
1. a first assembly housing;
11. the device comprises a first mounting channel, a second mounting channel, a placing cavity, a 14, a mounting cavity, a 15, a communication hole, a 16, a second hydraulic pipe, a 17 and a second regulating valve, wherein the first mounting channel is connected with the second mounting channel;
2. a second assembly housing;
211. the device comprises a bottom plate, 212 plugging rubber gaskets, 213, a graphite annular plate, 22, a pressing sleeve, 23, a protection pipe, 24, a hydraulic cavity, 251, a first hydraulic pipe, 252 and a first regulating valve;
3. an oil delivery pipe;
31. 32, a retention end;
4. a slip section;
41. Sealing and connecting rings 421, elastic sealing rubber cylinders 422, elastic folding rubber rings 43, anchoring plates 431, anticlockwise thread grooves 432, limiting clamping grooves 44, pressing plates 45, connecting brackets 461, multistage thread loop bars 462, limiting rollers 47, connecting bearings 48, supporting bases 491, fixing blocks 492 and sliding blocks;
5. A sealing rubber cylinder, a high temperature resistant rubber cylinder and a sealing plate.
Detailed Description
In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
Example 1
Referring to fig. 1 to 9, the invention provides a technical scheme that a high temperature resistant recyclable downhole packer comprises a first assembled shell 1, and is characterized in that the inner wall of the first assembled shell 1 is fixedly connected with a second assembled shell 2, the inner wall of the second assembled shell 2 is movably connected with an oil delivery pipe 3, the outer wall of the second assembled shell 2 is provided with a slip part 4, the outer wall of the bottom of the slip part 4 is fixedly connected with a plurality of blocking rubber barrels 5, a high temperature resistant rubber barrel 6 and a blocking plate 7, wherein the slip part 4 is divided into an anchoring structure and a blocking structure, the anchoring structure comprises a blocking ring 41, a plurality of groups of anchoring plates 43, a pressing plate 44, a connecting bracket 45, a multi-stage thread sleeve 461 and a limiting roller 462, and the blocking structure comprises an elastic sealing rubber barrel 421 and an elastic folding rubber ring 422.
In the invention, after the invention is lowered to the preset pumping position of the oil well, the blocking rubber 5 and the high temperature resistant rubber 6 are pressurized to complete the layered blocking of the underground passage, and the anchoring structure can be synchronously unfolded to fix the invention in the underground passage, so that the invention can be prevented from loosening in the underground passage due to vibration generated during pumping oil, the stability of the anchoring structure is ensured, and after the anchoring structure is fixed, the two-stage layered blocking is formed by matching with the blocking structure, thereby further enhancing the structural stability of the invention.
Example two
On the basis of the first embodiment, the second assembly housing 2 comprises a pressing sleeve 22 and a protecting tube 23, the inner wall and the outer wall of the sealing and fixing ring 41 are movably connected with the outer wall of the protecting tube 23, one side outer wall of a plurality of groups of connecting brackets 45 is fixedly connected with the peripheral outer wall of the protecting tube 23, the top outer walls of a plurality of pressing plates 44 are fixedly connected with the bottom outer wall of the sealing and fixing ring 41, the peripheral outer walls of the pressing plates 44 are slidably clamped with the inner wall of the connecting brackets 45, one end outer wall of a multistage thread sleeve rod 461 is fixedly connected with the outer wall of the pressing plates 44, one end outer wall of the multistage thread sleeve rod 461 far away from the pressing plates 44 is fixedly connected with the inner shaft sleeve of the limiting roller 462, the inner walls of a plurality of groups of anchor plates 43 are provided with anticlockwise thread grooves 431, the inner walls of anticlockwise thread grooves 431 are movably connected with the outer walls of the limiting roller 462, the inner walls of anticlockwise thread grooves 431 are provided with limiting clamping grooves 432, the inner wall of the limit clamping groove 432 is in limit clamping connection with the outer wall of the limit roller 462, the outer wall of the anchor plate 43 is provided with clockwise thread grooves, the outer wall of the anchor plate 43 is provided with a plurality of groups of mutually coherent grains, the inner wall of the anchor plate 43 is provided with anticlockwise thread grooves 431 which are mutually coherent grains, the plurality of multistage thread loop bars 461 are positioned on the pressing plate 44 and have different heights from the heights of the anticlockwise thread grooves 431 on the opposite sides, the outer wall of the protection tube 23 is fixedly connected with the connecting bearing 47, the inner sleeve of the connecting bearing 47 is fixedly connected with the outer wall of the protection tube 23, the top outer wall of the outer sleeve of the connecting bearing 47 is fixedly connected with the bearing base 48, the top outer wall of the bearing base 48 is provided with a plurality of limit guide rails, the bottom outer wall of the anchor plate 43 is fixedly connected with the fixing block 491, the bottom outer wall of the fixing block 491 is fixedly connected with the sliding block 492, the outer wall of the slider 492 is slidably coupled to the inner wall of the curb rail.
In the invention, when the pressing plate 44 moves downwards, the multi-stage threaded sleeve rod 461 and the limiting roller 462 are driven to synchronously move downwards, because the anticlockwise threaded groove 431 of the anchoring plate 43 is provided with a certain inclination angle, the downwards pressing force of the limiting roller 462 on the inner wall of the anticlockwise threaded groove 431 can enable the limiting roller 462 to roll to drive the anchoring plate 43 to reversely rotate, meanwhile, the multi-stage threaded sleeve rod 461 is driven to rotate by the rolling of the limiting roller 462 to enable the multi-stage threaded sleeve rod 461 to roll out to extend to push the anchoring plate 43 to extend outwards, in this way, the anchoring plate 43 is pushed to the position of a downhole channel to prop against, and meanwhile, the outward extension of the anchoring plate 43 is combined with the reverse rotation of the anchoring plate, so that the anchoring plate 43 can be screwed on the inner wall of the downhole channel along with threads.
Example III
On the basis of the second embodiment, the outer wall of the pipe body 31 is movably connected with the inner wall of the protection pipe 23, the hydraulic cavity 24 is formed on the outer wall of the bottom of the pressure sleeve 22, the bottom plate 211 is arranged on the inner wall of the hydraulic cavity 24, the sealing rubber pad 212 is fixedly connected with the outer wall of the top of the bottom plate 211, the outer wall of the sealing rubber pad 212 is slidably connected with the inner wall of the hydraulic cavity 24, the bottom outer wall of the bottom plate 211 is fixedly connected with the graphite ring plate 213, the bottom outer wall of the graphite ring plate 213 is movably connected with the outer wall of the top of the sealing ring 41, the communication holes 15 are formed on the outer walls of the two sides of the first assembly shell 1, the placing cavity 13 is formed on the inner wall of the first assembly shell 1, the inner wall of the communication holes 15 is fixedly connected with the first hydraulic pipe 251, one end inner wall of the first hydraulic pipe 251 is communicated with the inner wall of the hydraulic cavity 24 through the pressure sleeve 22, the outer wall of the first hydraulic pipe 251 is fixedly connected with the first regulating valve 252, and the pressure sleeve 22 and the bottom plate 211 are of a C-shaped structure, so that a penetrating channel is formed.
The hydraulic pressure is pumped into the hydraulic pressure cavity 24 through the first hydraulic pipe 251, the bottom plate 211 is pushed downwards along the inner wall of the hydraulic pressure cavity 24 after being pressed, the graphite ring plate 213 is propped against the sealing ring 41 to drive the pressing plate 44 to be pushed downwards, and stretching and pushing of the anchoring plate 43 are completed.
Example IV
On the basis of the third embodiment, the outer walls of two sides of the elastic folding rubber ring 422 are fixedly connected with the outer wall of one side of the adjacent side anchor plate 43 respectively, the outer walls of the anchor plate 43 and the elastic folding rubber ring 422 are fixedly connected with the elastic sealing rubber cylinder 421, the top outer walls of the anchor plate 43 and the elastic folding rubber ring 422 are fixedly connected with the bottom outer wall of the sealing ring 41 through the elastic sealing rubber cylinder 421, the bottom outer walls of the anchor plate 43 and the elastic folding rubber ring 422 are fixedly connected with the outer wall of the protection pipe 23 through the elastic sealing rubber cylinder 421, the oil conveying pipe 3 comprises a pipe body 31 and a retention end head 32, the top outer wall of the first assembly shell 1 is provided with a first installation channel 11, the outer wall of the retention end head 32 is movably connected with the inner wall of the first installation channel 11, the bottom outer wall of the first installation channel 11 is provided with a second installation channel 12, the outer wall of the pipe body 31 is movably connected with the inner wall of the second installation channel 12, the bottom outer wall of the first assembly shell 1 is provided with an installation inner cavity 14, the outer wall of the second assembly shell 2 is fixedly connected with the inner wall of the installation inner cavity 14 through the elastic sealing rubber cylinder 421, the outer wall of the first assembly shell 1 is fixedly connected with the second hydraulic pressure regulating pipe 17 through 15 and the second hydraulic pressure regulating pipe 16 which is fixedly connected with the second hydraulic pressure regulating pipe 16.
In the invention, an installation channel is reserved for the second hydraulic pipe 16 through the structure of the C-shaped pressure sleeve 22, the elastic sealing rubber cylinder 421 and the elastic folding rubber ring 422 have certain rebound toughness, when the anchoring plate 43 stretches, hydraulic oil is injected into the stretching cavity of the anchoring plate 43 through the second hydraulic pipe 16, the hydraulic oil quantity guarantee can meet the elastic stretching of the elastic sealing rubber cylinder 421 and the elastic folding rubber ring 422, after the anchoring plate 43 is completely fixed in the underground channel, the elastic folding rubber ring 422 can also prop against the inner wall of the underground channel, the secondary sealing of the underground channel is completed through the sealing structure combined with the anchoring structure, the overall stability of the invention is further enhanced, and when the invention needs to be recovered, the invention and the underground channel can be loosened and recovered only by recovering each level of hydraulic oil through the second hydraulic pipe 16 and the first hydraulic pipe 251.
The working principle and the using flow of the invention are as follows: in the invention, after the invention is lowered to the preset pumping position of the oil well, the layered blocking of the underground passage is completed by pressurizing the blocking rubber cylinder 5 and the high temperature resistant rubber cylinder 6, and the invention can be fastened in the underground passage by synchronously expanding the anchoring structure, so that the invention can be prevented from loosening in the underground passage due to vibration generated during pumping oil, the stability of the supporting structure is ensured, and after the anchoring structure is fixed, the two-stage layered blocking is formed by matching with the blocking structure, so that the structural stability of the invention is further enhanced. Meanwhile, the multi-stage threaded sleeve rod 461 is driven by the rolling of the limit roller 462 to rotate so as to extend the multi-stage threaded sleeve rod 461, the anchoring plate 43 is pushed to extend outwards, in this way, the anchoring plate 43 is pushed to the position of the underground passage to be propped against, meanwhile, the outwards extending of the anchoring plate 43 is combined with the reverse rotation of the anchoring plate 43, so that the anchoring plate 43 can be screwed down on the inner wall of the underground passage along the threads, and by setting the threads to be screwed down, the invention can further screw down the anchoring plate 43 to be embedded into the inner wall of the underground passage while propping up, can effectively resist and be difficult to loosen when vibration is generated, has better stabilizing effect, pumps hydraulic oil into the hydraulic chamber 24 through the first hydraulic pipe 251, the bottom plate 211 is pushed downwards along the inner wall of the hydraulic chamber 24 after being pressed, the sealing and fixing ring 41 is propped against the sealing ring 41 through the graphite ring plate 213 to drive the pressing plate 44 to be pressed downwards, in the invention, an installation channel is reserved for the second hydraulic pipe 16 through the structure of the C-shaped pressure sleeve 22, the elastic sealing rubber cylinder 421 and the elastic folding rubber ring 422 have certain rebound toughness, when the anchor plate 43 stretches, hydraulic oil is injected into an internal stretching cavity of the anchor plate 43 through the second hydraulic pipe 16, the hydraulic oil quantity guarantee can meet the elastic stretching of the elastic sealing rubber cylinder 421 and the elastic folding rubber ring 422, after the anchor plate 43 is completely fixed in the underground channel, the elastic folding rubber ring 422 can also prop against the inner wall of the underground channel, the secondary sealing of the underground channel is completed through the sealing structure combined with the anchoring structure, the integral stability of the invention is further enhanced, and when the invention needs to be recovered, the invention can be loosened from the underground channel and recovered only by recovering each level of hydraulic oil through the second hydraulic pipe 16 and the first hydraulic pipe 251.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The high-temperature-resistant recyclable underground packer comprises a first assembly shell (1) and is characterized in that a second assembly shell (2) is fixedly connected to the inner wall of the first assembly shell (1), an oil conveying pipe (3) is movably connected to the inner wall of the second assembly shell (2), a slip part (4) is arranged on the outer wall of the second assembly shell (2), a plurality of blocking rubber barrels (5), high-temperature-resistant rubber barrels (6) and blocking plates (7) are fixedly connected to the outer wall of the bottom of the slip part (4), the slip part (4) is divided into an anchoring structure and a blocking structure, the anchoring structure comprises a blocking interlink (41), a plurality of groups of anchoring plates (43), pressing plates (44), connecting supports (45), a multi-stage thread loop bar (461) and limiting idler wheels (462), and the blocking structure comprises an elastic sealing rubber barrel (421) and an elastic folding rubber ring (422).
2. The high-temperature-resistant recyclable downhole packer is characterized in that the second assembling shell (2) comprises a pressing sleeve (22) and a protection pipe (23), the outer wall of the inner wall of the sealing connecting ring (41) is movably connected with the outer wall of the protection pipe (23), one side outer wall of the plurality of groups of connecting supports (45) is fixedly connected with the outer wall of the periphery of the protection pipe (23) respectively, the top outer wall of the plurality of pressing plates (44) is fixedly connected with the bottom outer wall of the sealing connecting ring (41), the outer wall of the periphery of the pressing plates (44) is slidably clamped with the inner wall of the connecting support (45), one end outer wall of the multistage threaded sleeve rod (461) is fixedly connected with the outer wall of the pressing plates (44), one end outer wall of the multistage threaded sleeve rod (461) far away from the pressing plates (44) is fixedly connected with the inner shaft sleeve of the limit roller (462), a plurality of groups of the inner shaft inner walls of the anchoring plates (43) are provided with anticlockwise threaded grooves (431), the inner walls of the anticlockwise threaded grooves (431) are movably connected with the outer walls of the limit roller (41), and the limit roller (432) are provided with limit grooves (462).
3. The recoverable downhole packer of claim 2, wherein the outer wall of the anchor plate (43) is provided with clockwise thread grooves, wherein the plurality of groups of the outer wall clockwise thread grooves of the anchor plate (43) are mutually consecutive lines, wherein the plurality of groups of the inner wall anticlockwise thread grooves (431) of the anchor plate (43) are mutually consecutive lines, wherein the plurality of multistage thread loop bars (461) are positioned on the pressing plate (44) at different heights and at the height level of the anticlockwise thread grooves (431) at opposite sides.
4. The high-temperature-resistant recyclable downhole packer is characterized in that a connecting bearing (47) is fixedly connected to the outer wall of the protective pipe (23), an inner sleeve of the connecting bearing (47) is fixedly connected with the outer wall of the protective pipe (23), a receiving base (48) is fixedly connected to the outer wall of the top of the outer sleeve of the connecting bearing (47), a plurality of limit guide rails are arranged on the outer wall of the top of the receiving base (48), a fixing block (491) is fixedly connected to the outer wall of the bottom of the anchoring plate (43), a sliding block (492) is fixedly connected to the outer wall of the bottom of the fixing block (491), and the outer wall of the sliding block (492) is in sliding connection with the inner wall of the limit guide rails.
5. The recoverable downhole packer of claim 1, wherein the outer walls of two sides of the elastic folding rubber ring (422) are fixedly connected with the outer walls of one side of the adjacent side anchor plate (43), the outer walls of the anchor plate (43) and the elastic folding rubber ring (422) are fixedly connected with the elastic sealing rubber cylinder (421), the top outer walls of the anchor plate (43) and the elastic folding rubber ring (422) are fixedly connected with the bottom outer wall of the sealing ring (41) through the elastic sealing rubber cylinder (421), and the bottom outer walls of the anchor plate (43) and the elastic folding rubber ring (422) are fixedly connected with the outer wall of the protecting pipe (23) through the elastic sealing rubber cylinder (421).
6. The high-temperature-resistant recyclable downhole packer is characterized in that the oil conveying pipe (3) comprises a pipe body (31) and a retention end head (32), a first installation channel (11) is formed in the outer wall of the top of the first assembly shell (1), the outer wall of the retention end head (32) is movably connected with the inner wall of the first installation channel (11), a second installation channel (12) is formed in the outer wall of the bottom of the first installation channel (11), the outer wall of the pipe body (31) is movably connected with the inner wall of the second installation channel (12), an installation inner cavity (14) is formed in the outer wall of the bottom of the first assembly shell (1), and the outer wall of the second assembly shell (2) is fixedly connected with the inner wall of the installation inner cavity (14).
7. The recoverable underground packer of claim 6, wherein the outer wall of the pipe body (31) is movably connected with the inner wall of the protection pipe (23), a hydraulic cavity (24) is formed in the outer wall of the bottom of the pressure sleeve (22), a bottom plate (211) is arranged on the inner wall of the hydraulic cavity (24), a sealing rubber pad (212) is fixedly connected to the outer wall of the top of the bottom plate (211), a graphite ring plate (213) is fixedly connected to the outer wall of the bottom plate (211) and is movably connected with the outer wall of the top of the sealing ring (41), communication holes (15) are formed in the outer walls of the two sides of the first assembly shell (1), a placing cavity (13) is formed in the inner wall of the first assembly shell (1), a first hydraulic pipe (251) is fixedly connected to the inner wall of the communication holes (15), one end inner wall of the first hydraulic pipe (251) is fixedly connected with the inner wall of the cavity (24) through the pressure sleeve (22), and a first hydraulic valve (252) is fixedly connected to the outer wall of the first hydraulic valve (251).
8. The recoverable downhole packer of claim 7, wherein said pressure jacket (22) and said bottom plate (211) are each of a "C" configuration forming a through passage.
9. The high-temperature-resistant recyclable downhole packer is characterized in that the outer wall of the first assembly shell (1) is fixedly connected with a second hydraulic pipe (16) communicated with the inner wall of the elastic sealing rubber cylinder (421) through a communication hole (15) and a through channel, and the outer wall of the second hydraulic pipe (16) is fixedly connected with a second regulating valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411295347.3A CN119062272A (en) | 2024-09-14 | 2024-09-14 | A high temperature resistant retrievable downhole packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411295347.3A CN119062272A (en) | 2024-09-14 | 2024-09-14 | A high temperature resistant retrievable downhole packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119062272A true CN119062272A (en) | 2024-12-03 |
Family
ID=93642353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411295347.3A Withdrawn CN119062272A (en) | 2024-09-14 | 2024-09-14 | A high temperature resistant retrievable downhole packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119062272A (en) |
-
2024
- 2024-09-14 CN CN202411295347.3A patent/CN119062272A/en not_active Withdrawn
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Application publication date: 20241203 |