CN115788353A - External packer for casing - Google Patents
External packer for casing Download PDFInfo
- Publication number
- CN115788353A CN115788353A CN202310074012.8A CN202310074012A CN115788353A CN 115788353 A CN115788353 A CN 115788353A CN 202310074012 A CN202310074012 A CN 202310074012A CN 115788353 A CN115788353 A CN 115788353A
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- Prior art keywords
- plates
- annular
- cylinder
- external casing
- plate
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- 238000012856 packing Methods 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000008093 supporting effect Effects 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 13
- 210000001503 joint Anatomy 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Pipe Accessories (AREA)
Abstract
The invention belongs to the technical field of oil-gas drilling, well completion, well cementation or well logging, and relates to a casing external packer which comprises a central tube, wherein a packing casing is arranged on the outer side of the central tube, two first annular plates are symmetrically arranged on the outer side of the packing casing, two second annular plates are symmetrically arranged between the two first annular plates in a sliding manner, two third annular plates are symmetrically arranged between the two second annular plates in a sliding manner, abutting plates are rotatably arranged on the opposite sides of the second annular plates and the nearest third annular plate in a circumferential array manner, abutting seats are rotatably arranged at the other ends of the two abutting plates, a rubber cylinder is arranged between the two third annular plates, a filling cylinder is arranged on the outer side of the rubber cylinder, connecting annular holes are linearly arranged on the outer cylinder layer of the filling cylinder in an array manner, and the outer cylinder layer of the filling cylinder is divided into a plurality of cylinder annular blocks by the connecting annular holes. The connection stability between the rubber cylinder and the inner wall of the packing pipeline is ensured through the abutting plate, and the sealing property of the pipeline to be packed is ensured through the non-structural adhesive inside the filling cylinder.
Description
Technical Field
The invention belongs to the technical field of oil and gas drilling, well completion, well cementation or well logging, and particularly relates to an external casing packer.
Background
The packer is a downhole tool which is connected to a downhole tubular column and used for packing and isolating an oil pipe and an oil and gas well casing or an open hole well wall annular space.
The Chinese patent with publication number CN111791457A discloses a casing outer packer, which comprises a central tube, a rubber tube and a rubber tube fixing ring, wherein the rubber tube is sleeved outside the central tube, the rubber tube fixing ring is fixed on the central tube and fixedly connected with two ends of the rubber tube, an annular space is reserved between the rubber tube and the central tube, the rubber tube comprises an inner tube made of an elastic material which does not expand when meeting liquid and an outer tube made of an elastic material which expands when meeting oil, a first flow passage leading to the annular space is arranged on the rubber tube fixing ring, a sealing valve core is arranged at an inlet of the first flow passage, the inner tube comprises an inner tube body, a radial through hole is arranged at the axial center of the inner tube body, a fracturable sealing membrane is arranged at one end of the through hole facing the central tube, and a finger-shaped reed is arranged at the connection part of the rubber tube and the rubber tube fixing ring in a surrounding manner.
However, the above patents still have some drawbacks: 1. the well hole is completely sealed through expansion of the rubber cylinder, the connection stability between the rubber cylinder and the inner wall of the well hole is insufficient, and when the central tube moves, a gap is easy to appear between the rubber cylinder and the inner wall of the well hole, so that the sealing effect is influenced; 2. when the rubber tube expands the well, if the inner wall of the well has uneven parts or solid impurities, a tiny gap still exists between the rubber tube and the inner wall of the well, and the packing effect is poor.
Disclosure of Invention
The invention aims to provide an outer packer of a casing, which aims to solve the technical problems that in the prior art, a borehole is completely packed through expansion of a rubber cylinder, the connection stability between the rubber cylinder and the inner wall of the borehole is insufficient, a gap is easy to appear between the rubber cylinder and the inner wall of the borehole when a central pipe moves, the packing effect is influenced, and when the rubber cylinder expands the borehole, if the inner wall of the borehole has rugged parts or solid sundries, a tiny gap still exists between the rubber cylinder and the inner wall of the borehole, and the packing effect is poor.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a bushing outer packer which comprises a central tube, wherein a packing bushing is arranged on the outer side of the central tube, two first ring plates are symmetrically arranged on the outer side of the packing bushing, two second ring plates are symmetrically arranged between the two first ring plates in a sliding manner, electric telescopic rods are arranged on the two first ring plates in a circumferential array manner, the second ring plates are arranged at the output ends of the electric telescopic rods, two third ring plates are symmetrically arranged between the two second ring plates in a sliding manner, abutting plates are arranged on the opposite sides of the second ring plates and the nearest third ring plate in a circumferential array manner in a rotating manner, abutting seats are arranged at the other ends of the two abutting plates in a rotating manner, a rubber tube is arranged between the two third ring plates, a filling tube is arranged on the outer side of the rubber tube, connecting ring holes are arranged on the outer side tube layer of the filling tube in a linear array manner, the outer side tube layer of the filling tube is divided into a plurality of tube ring blocks by the connecting ring holes, and connecting ring blocks are arranged inside the connecting ring holes.
Preferably, the second annular plate and the nearest third annular plate are provided with a rotary locking piece on opposite sides, and one end of the abutting plate is rotatably arranged on the locking end of the rotary locking piece.
Preferably, the inner side of the third annular plate is provided with a sliding locking piece, the outer side of the packing sleeve is provided with a locking groove, and the locking groove is matched with the locking end of the sliding locking piece.
Preferably, the inside of butt joint seat is equipped with the chamber that resets, the outside activity of butt joint seat is equipped with the backup pad, the outside of backup pad is equipped with the protection pad, the inboard of backup pad is equipped with the supporting shoe, the other end of supporting shoe extends to the inside in chamber that resets, just the supporting shoe extends to be equipped with the reset block on the tip in the intracavity that resets, the inboard of reset block is equipped with the spring.
Preferably, be equipped with pressure sensor on the inner wall in chamber that resets, pressure sensor's response portion with the spring is connected, rotate the locking piece with slip locking piece all with pressure sensor transmission is connected.
Preferably, the inside of rubber tube is equipped with liquid silica gel, the section of thick bamboo in situ portion of rubber tube is equipped with a plurality of cushion chambers, and is a plurality of all be equipped with the through-hole between the cushion chamber.
Preferably, the filling cylinder is internally provided with a non-structural adhesive.
Preferably, a deformation cavity is arranged inside the cylinder ring block.
Preferably, the inside of the connecting ring block is provided with a curing agent, and the inner side and the outer side of the connecting ring block are both concave structures.
Preferably, a protective net is arranged outside the filling cylinder.
Compared with the prior art, the invention has the beneficial effects that:
the external casing packer comprises a rubber cylinder, a packing cylinder, a rubber cylinder, a supporting plate, a sealing plate and a non-structural adhesive.
Secondly, according to the external casing packer disclosed by the invention, the protection pad is kept in butt joint with the inner wall of the pipeline to be packed under the elastic acting force of the spring, so that the inner wall of the pipeline to be packed can not be damaged by friction through the protection pad, the protection pad can have enough butt joint acting force on the inner wall of the pipeline to be packed, and the connection stability between the packing casing and the inner wall of the pipeline to be packed is ensured.
Thirdly, the liquid silica gel is arranged in the rubber cylinder, the plurality of buffer cavities are arranged in the cylinder layer of the rubber cylinder, and the through holes are formed among the plurality of buffer cavities, so that the situation that the surface of the rubber cylinder is cracked due to the extrusion action force of the rubber cylinder can be avoided under the condition that the rubber cylinder has enough tensile strength, and meanwhile, the rubber cylinder can be protected from being damaged due to direct friction between the rubber cylinder and the inner wall of the pipeline to be sealed and isolated by the filling cylinder.
Fourthly, the casing pipe external packer completely seals the pipeline to be sealed after the non-structural adhesive inside the filling cylinder and the curing agent inside the connecting ring block are fully mixed, and the sealing performance of the pipeline to be sealed is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic perspective view of an external casing packer of the present invention;
FIG. 2 is a schematic perspective view of an abutting plate according to the present invention;
FIG. 3 is a schematic cross-sectional view of the external casing packer of the present invention;
FIG. 4 is an enlarged view of point A of FIG. 3 according to the present invention;
fig. 5 is an enlarged schematic view of point B in fig. 3 according to the present invention.
In the figure:
1. a central tube; 2. packing the sleeve; 3. a first ring plate; 31. an electric telescopic rod; 4. a second ring plate; 41. rotating the locking member; 5. a third ring plate; 51. a slide lock member; 6. a butt joint plate; 61. a butting seat; 62. a reset chamber; 63. a support plate; 64. a protection pad; 65. a supporting block; 66. a reset block; 67. a spring; 68. a pressure sensor; 7. a rubber cylinder; 71. liquid silica gel; 72. a buffer chamber; 73. a through hole; 8. a filling cylinder; 81. a barrel ring block; 82. connecting the ring blocks; 83. a non-structural adhesive; 84. a deformation chamber; 85. a curing agent; 86. and (4) a protective net.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1 to 5, the present invention provides a bushing outer packer, which includes a central tube 1, a packing bushing 2 is disposed on an outer side of the central tube 1, two first ring plates 3 are symmetrically disposed on an outer side of the packing bushing 2, two second ring plates 4 are symmetrically slidably disposed between the two first ring plates 3, electric telescopic rods 31 are disposed on the two first ring plates 3 in a circumferential array, the second ring plates 4 are disposed on output ends of the electric telescopic rods 31, two third ring plates 5 are symmetrically slidably disposed between the two second ring plates 4, abutting plates 6 are rotatably disposed on opposite sides of the second ring plates 4 and a nearest third ring plate 5 in a circumferential array, abutting seats 61 are rotatably disposed at other ends of the two abutting plates 6, a rubber tube 7 is disposed between the two third ring plates 5, a packing tube 8 is disposed on an outer side of the rubber tube 7, connecting ring holes are linearly disposed on an outer tube layer of the packing tube 8, the outer tube layer of the packing tube 8 is divided into a plurality of tube ring blocks 81 by the connecting ring holes, and a connecting block 82 is disposed inside the connecting ring holes.
When the invention works, the two second annular plates 4 are driven to move oppositely through the electric telescopic rods 31 on the two first annular plates 3, at the same time, the second annular plates 4 can push the abutting plates 6 connected with the second annular plates to rotate towards the inner wall direction of the pipeline to be sealed, and simultaneously, the abutting plates 6 connected with the third annular plates 5 are driven to synchronously rotate towards the inner wall direction of the pipeline to be sealed, so that the abutting seats 61 move towards the inner wall direction of the pipeline to be sealed, as shown in a combined graph of figure 2 and figure 4, the opposite sides of the second annular plates 4 and the nearest third annular plate 5 are respectively provided with a rotating locking piece 41, one end of the abutting plates 6 is rotatably arranged on the locking end of the rotating locking piece 41, the inner side of the third annular plate 5 is provided with a sliding locking piece 51, the outer side of the sealing sleeve 2 is provided with a locking groove, the locking groove is matched with the locking end of the sliding locking piece 51, the inner part of the abutting seat 61 is provided with a resetting cavity 62, the outer side of the seat 61 is movably provided with a supporting plate 63, the outside of backup pad 63 is equipped with protection pad 64, the inboard of backup pad 63 is equipped with supporting shoe 65, the other end of supporting shoe 65 extends to the inside that resets chamber 62, and supporting shoe 65 extends to and is equipped with reset block 66 on the tip in resetting chamber 62, the inboard of reset block 66 is equipped with spring 67, be equipped with pressure sensor 68 on the inner wall of resetting chamber 62, pressure sensor 68's response portion is connected with spring 67, it all is connected with pressure sensor 68 transmission to rotate locking piece 41 and slide locking piece 51, when butt seat 61 drives protection pad 64 butt on the inner wall of the pipeline of waiting to seal, butt seat 61 can make supporting shoe 65 on the backup pad 63 to the inside activity of butt seat 61 under the supporting effort of the pipeline inner wall of waiting to seal, reset block 66 on supporting shoe 65 can exert effort to spring 67 at this moment and make spring 67 deformation, spring 67 can conduct the supporting effort of the pipeline inner wall of waiting to seal to the response of pressure sensor 68 when deformation When the pressure monitored by the pressure sensor 68 reaches a preset value, the rotation locking piece 41 on the second annular plate 4 and the third annular plate 5 can be transmitted, the signal is transmitted to the sliding locking piece 51 on the third annular plate 5 at the same time, the rotation locking piece 41 locks the butt joint plate 6 between the second annular plate 4 and the third annular plate 5 at the moment, the locking state is relieved by the sliding locking piece 51 at the same time, so that the electric telescopic rod 31 drives the two second annular plates 4 to continuously move in opposite directions, and meanwhile, the second annular plate 4 drives the two third annular plates 5 to move in opposite directions, so that the rubber cylinder 7 is extruded through the two third annular plates 5, and the rubber cylinder 7 is deformed towards the inner wall direction of a pipeline to be sealed.
Further, at two second crown plates 4 of electric telescopic handle 31 drive and continue activity in opposite directions, simultaneously second crown plate 4 drives two third crown plates 5 when moving in opposite directions, certain loss appears in protection pad 64 can with the condition that produces friction between the inner wall of waiting to seal the pipeline, reset block 66 can drive supporting shoe 65 to the inner wall direction activity of waiting to seal the pipeline under the effort that spring 67 resumeed deformation this moment, simultaneously supporting shoe 65 can drive protection pad 64 on the backup pad 63 and keep the butt on waiting to seal the inner wall of separating the pipeline, not only can protect the inner wall of waiting to seal the pipeline through protection pad 64 can not by the friction damage, can also make protection pad 64 have sufficient butt effort to the inner wall that seals the pipeline, guarantee to seal the stability of being connected between sleeve pipe 2 and the inner wall of packing the pipeline.
It should be added that the rotation locking member 41 is a device having the functions of a pivot and a locking pivot, and the sliding locking member 51 is a device having the functions of a latch and a retractable latch, which will not be described herein.
When the rubber tube 7 deforms towards the inner wall direction of the pipeline to be sealed, as shown in fig. 3 and fig. 5, liquid silica gel 71 is arranged inside the rubber tube 7, a plurality of buffer cavities 72 are arranged inside the tube layer of the rubber tube 7, through holes 73 are formed between the buffer cavities 72, a non-structural adhesive 83 is arranged inside the filling tube 8, a deformation cavity 84 is arranged inside the tube ring block 81, a curing agent 85 is arranged inside the connecting ring block 82, both the inner side and the outer side of the connecting ring block 82 are of a concave structure, a protective net 86 is arranged outside the filling tube 8, the rubber tube 7 can extrude the filling tube 8, so that the filling tube 8 synchronously deforms towards the inner wall direction of the pipeline to be sealed, when the traditional filling material deforms and abuts against the inner wall of the pipeline to be sealed, the situation that the epidermis cracks easily occur due to the self extrusion acting force and the friction acting force of the inner wall of the pipeline to be sealed is easily generated, therefore, liquid silica gel 71 is arranged inside the rubber tube 7, the situation that the inner wall of the rubber tube 7 is stretched and the inner wall of the rubber tube 7 can be directly protected from the damaged due to the self friction acting force, and the situation that the inner wall of the rubber tube 7 can not be damaged.
Further, when the filling cylinder 8 deforms towards the inner wall direction of the pipeline to be sealed, the filling cylinder 8 drives the protective net 86 to move towards the inner wall direction of the pipeline to be sealed synchronously, when the protective net 86 abuts against the inner wall of the pipeline to be sealed, an acting force is applied to the outer side of the filling cylinder 8 under the supporting action of the inner wall of the pipeline to be sealed, at the moment, the filling cylinder 8 is under the bidirectional extrusion of the rubber cylinder 7 and the protective net 86, the non-structural adhesive 83 inside the filling cylinder 8 breaks through the connecting ring 82 and is filled between the protective net 86 and the inner wall of the pipeline to be sealed, because the inner side and the outer side of the connecting ring 82 are both concave structures, the non-structural adhesive 83 conveniently breaks through the connecting ring 82, when the non-structural adhesive 83 breaks through the connecting ring 82, the non-structural adhesive 83 is mixed with the curing agent 85 inside the connecting ring 82, the curing speed of the non-structural adhesive 83 is effectively increased, the protective net 83 needs to be supplemented, because the connecting ring 86 is connected with the plurality of cylinder rings 81, the connecting ring 82 at one position is broken by the non-structural adhesive 83, the connecting ring 82, the non-structural adhesive 83 is completely blocked by the connecting ring 82, and the non-structural adhesive 83, the connecting ring 82, and the non-structural adhesive can be prevented from being pressed by the connecting ring 82, and the non-structural adhesive 83, and the non-structural adhesive 82, and the connecting ring 82, and the connecting structure adhesive can be completely sealed.
When the pipeline packing state is released, the two second annular plates 4 are driven to move to the original positions by the electric telescopic rods 31 on the two first annular plates 3, at the moment, the two second annular plates 4 can drive the two third annular plates 5 to move to the original positions, so that the rubber cylinder 7 and the protective net 86 are pulled to the original positions by the two third annular plates 5, the protective net 86 is connected with the plurality of cylinder annular blocks 81, the pipeline to be packed can be completely sealed after the non-structural adhesive 83 and the curing agent 85 are fully mixed, and the pipeline to be packed is connected to the protective net 86 at the same time, and the protective net 86 can drive the solidified non-structural adhesive 83 to be separated from the inner wall of the pipeline to be packed, so that subsequent recycling work is facilitated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a packer outside sleeve pipe, includes center tube (1), its characterized in that: the outside of center tube (1) is equipped with seals and separates sleeve pipe (2), the outside of sealing and separating sleeve pipe (2) is the symmetry and is equipped with two first crown plates (3), two it slides and is equipped with two second crown plates (4), two to be the symmetry between first crown plate (3) and slide and be equipped with two third crown plates (5) all to be the circumference array on first crown plate (3), second crown plate (4) are located a plurality of on the output of electric telescopic handle (31), two it slides and is equipped with two third crown plates (5) to be the symmetry between second crown plate (4), second crown plate (4) and nearest one third crown plate (5) one side in opposite directions all is the circumference array and rotates and is equipped with butt joint board (6), two the other end of butt joint board (6) rotates and is equipped with butt joint seat (61), two be equipped with rubber tube (7) between third crown plate (5), the outside of rubber tube (7) is equipped with packing section of thick bamboo (8), it is equipped with linear array on the section of thick bamboo layer to fill a plurality of rings hole on the section of thick bamboo layer (8), the connecting ring hole (81) will fill a plurality of ring and separate into a plurality of ring piece (8) the inside ring block (82).
2. The external casing packer of claim 1, wherein: the opposite sides of the second annular plate (4) and the nearest third annular plate (5) are provided with rotating locking pieces (41), and one end of the abutting plate (6) is rotatably arranged on the locking end of each rotating locking piece (41).
3. The external casing packer of claim 2, wherein: the inner side of the third annular plate (5) is provided with a sliding locking piece (51), the outer side of the packing sleeve (2) is provided with a locking groove, and the locking groove is matched with the locking end of the sliding locking piece (51).
4. The external casing packer of claim 3, wherein: the inside of butt joint seat (61) is equipped with chamber (62) that resets, the outside activity of butt joint seat (61) is equipped with backup pad (63), the outside of backup pad (63) is equipped with protection pad (64), the inboard of backup pad (63) is equipped with supporting shoe (65), the other end of supporting shoe (65) extends to the inside in chamber (62) resets, just supporting shoe (65) extend to be equipped with reset block (66) on the tip in chamber (62) resets, the inboard of reset block (66) is equipped with spring (67).
5. The external casing packer of claim 4, wherein: be equipped with pressure sensor (68) on the inner wall of chamber (62) resets, the response portion of pressure sensor (68) with spring (67) are connected, rotate locking piece (41) with slip locking piece (51) all with pressure sensor (68) transmission is connected.
6. The external casing packer of claim 1, wherein: the rubber tube is characterized in that liquid silica gel (71) is arranged inside the rubber tube (7), a plurality of buffer cavities (72) are arranged inside a tube layer of the rubber tube (7), and through holes (73) are formed between the buffer cavities (72).
7. The external casing packer of claim 1, wherein: and a non-structural adhesive (83) is arranged in the filling cylinder (8).
8. The external casing packer of claim 1, wherein: and a deformation cavity (84) is formed in the barrel ring block (81).
9. The external casing packer of claim 1, wherein: the interior of the connecting ring block (82) is provided with a curing agent (85), and the inner side and the outer side of the connecting ring block (82) are both concave structures.
10. The external casing packer of claim 1, wherein: and a protective net (86) is arranged on the outer side of the filling cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310074012.8A CN115788353B (en) | 2023-02-07 | 2023-02-07 | External casing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310074012.8A CN115788353B (en) | 2023-02-07 | 2023-02-07 | External casing packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115788353A true CN115788353A (en) | 2023-03-14 |
| CN115788353B CN115788353B (en) | 2023-04-25 |
Family
ID=85430233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310074012.8A Active CN115788353B (en) | 2023-02-07 | 2023-02-07 | External casing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115788353B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0057531A2 (en) * | 1981-01-29 | 1982-08-11 | Mono Pumps Limited | Well packer |
| US4403660A (en) * | 1980-08-08 | 1983-09-13 | Mgc Oil Tools, Inc. | Well packer and method of use thereof |
| CN102134976A (en) * | 2011-03-04 | 2011-07-27 | 中南大学 | Tunnel drilling hydraulic power reverse-circulation dual-walled drilling tool |
| CN102953704A (en) * | 2012-11-26 | 2013-03-06 | 中国石油集团渤海石油装备制造有限公司 | Thick-oil thermal recovery device in oil fieldSelf-sealing type thermal recovery packer. |
| CN211851763U (en) * | 2019-12-25 | 2020-11-03 | 中国石油天然气股份有限公司 | External packer for casing |
| CN212225164U (en) * | 2020-05-12 | 2020-12-25 | 大庆宏远华星科技有限公司 | Stable and durable packer |
| CN215332758U (en) * | 2021-07-18 | 2021-12-28 | 菲哲石油装备(辽宁)有限公司 | Differential pressure type oil extraction packer |
-
2023
- 2023-02-07 CN CN202310074012.8A patent/CN115788353B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403660A (en) * | 1980-08-08 | 1983-09-13 | Mgc Oil Tools, Inc. | Well packer and method of use thereof |
| EP0057531A2 (en) * | 1981-01-29 | 1982-08-11 | Mono Pumps Limited | Well packer |
| CN102134976A (en) * | 2011-03-04 | 2011-07-27 | 中南大学 | Tunnel drilling hydraulic power reverse-circulation dual-walled drilling tool |
| CN102953704A (en) * | 2012-11-26 | 2013-03-06 | 中国石油集团渤海石油装备制造有限公司 | Thick-oil thermal recovery device in oil fieldSelf-sealing type thermal recovery packer. |
| CN211851763U (en) * | 2019-12-25 | 2020-11-03 | 中国石油天然气股份有限公司 | External packer for casing |
| CN212225164U (en) * | 2020-05-12 | 2020-12-25 | 大庆宏远华星科技有限公司 | Stable and durable packer |
| CN215332758U (en) * | 2021-07-18 | 2021-12-28 | 菲哲石油装备(辽宁)有限公司 | Differential pressure type oil extraction packer |
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| Publication number | Publication date |
|---|---|
| CN115788353B (en) | 2023-04-25 |
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Denomination of invention: Casing outer packer Effective date of registration: 20231106 Granted publication date: 20230425 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: Shandong Huaguan Energy Technology Co.,Ltd. Registration number: Y2023980064188 |