CN202531093U - Expanding packer - Google Patents
Expanding packer Download PDFInfo
- Publication number
- CN202531093U CN202531093U CN2012200873023U CN201220087302U CN202531093U CN 202531093 U CN202531093 U CN 202531093U CN 2012200873023 U CN2012200873023 U CN 2012200873023U CN 201220087302 U CN201220087302 U CN 201220087302U CN 202531093 U CN202531093 U CN 202531093U
- Authority
- CN
- China
- Prior art keywords
- inwall
- packer
- central tube
- packing element
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012856 packing Methods 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 210000002445 nipple Anatomy 0.000 claims description 22
- 238000005987 sulfurization reaction Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004073 vulcanization Methods 0.000 abstract 2
- 230000007774 longterm Effects 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Images
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- Sealing Devices (AREA)
Abstract
The utility model discloses an expanding packer is designed for the purpose that realizes that its bearing capacity is good, the annular space of sleeve pipe pressurization deblocking and assurance operation success rate, mainly including the center tube of connecting upper and lower joint, the vulcanization of connecting the working barrel connect, connect the expansion packing element of upper and lower vulcanization joint, establish the sealing piston between center tube and last working barrel, establish pressure regulating nut, sheath and seal cover etc. between center tube and lower working barrel. The utility model discloses expanding packer adopts the one-way sealed seat of rubber to lead the pressure pore structure, can guarantee packer seat back center tube pressure release, and the packer is not the deblocking, realizes long-term layering water injection purpose. Different with conventional K344 packer, need the pressurization of sleeve pipe annular space during this expanding packer deblocking, the packer packing element kick-backs, can reduce the multilayer and divide the risk of digging a hole when annotating separately, reduces the fatigue damage of packing element, improves the development effect of separate layer water injection by a wide margin.
Description
Technical field
The utility model relates to a kind of inflatable packer, belongs to technical field of tools under the oil well.
Background technology
At present, domestic separated-zone water infection oil field adopts Y341 washing well packer to realize sealing layer position purpose, can satisfy four layers basically with the requirement of interior branch notes water injection technology.But,, need carry out multistage water injection in order further to improve vertically each substratum water drive development degree along with oil field development is goed deep into.For the directional well that increases year by year, deep-well and complicated well type; Adopt Y341 washing well packer to carry out multilevel hierarchy water filling operation meeting and increase the deblocking power that the later stage pulls out of hole greatly; Packing element can't be realized resilience before the operation of inspection string; Could deblocking when having only the load forces of upper lifting pipe post to reach a plurality of packer deblocking power sum, it is short that the branch of this decapsulator is annotated period of validity, and the later stage operating risk is big.Adopt present conventional K344 packer can not solve branch and annotate problems such as period of validity weak point; The data at home and abroad surface, after conventional K344 packer setting and the central tube pressure release, the automatic resilience of packing element; And receive that water injection well stops annotating, the influence of anti-flushing well and different operating modes such as water filling; The work of packing element meeting repeated multiple times causes the sealing period of validity to shorten, and can not realize meticulous layering.
Summary of the invention
The purpose of the utility model is to provide a kind of inflatable packer, and its load performance is good, can realize packer casing annulus pressurization deblocking, effectively guarantees the success rate of construction operation.
The concrete technical scheme of the utility model is following:
The top connection lower internal thread connects central tube, and external screw thread is connected with the upper joint sleeve that annular space is suppressed radial hole, and the joint face place is provided with sealing ring.Last seating nipple is ladder barrel shape, and it is provided with the first terrace inwall suit central tube of opening and following opening, outer wall suit packed-piston.The second terrace external screw thread connects upper joint sleeve, and internal thread connects goes up vulcanized joint.The 3rd terrace inwall suit expansion packing element.The packed-piston inwall is provided with the annular groove that can be communicated with opening and following opening; Packed-piston is located between upper joint sleeve and the last seating nipple; Be provided with sealing ring between joint face; Packed-piston inwall convex shoulder attaches central tube in last seating nipple top, and central tube is provided with radial pressure balance pipe, deblocking pressure guide hole and sets pressure guide hole.The inwall sulfuration of expansion packing element upper end connects goes up vulcanized joint, and inwall sulfuration in lower end connects vulcanized joint down, and three's inwall all attaches central tube, and expansion packing element lower end is sleeved on down in the seating nipple.
The following seating nipple inwall convex shoulder vulcanized joint that is threaded down, the suit lower contact of inwall lower end, and joint face is provided with the circle sealing.The lower contact inner thread connects central tube.In the space that seating nipple inwall convex shoulder, lower contact and central tube form down, ecto-entad is suit look nut, sheath and sealing shroud successively.
The utility model adopts macintoss to set the pressure guide hole structure to sealing, can guarantee the pipe pressure release of packer setting rear center, and packer is deblocking not, realizes long-acting seperated layer water injection purpose.Different with conventional K344 packer, need the casing annulus pressurization during deblocking, the packing element resilience, the trip-out risk in the time of reducing depositing reduces the fatigue damage of packing element, significantly improves the development effectiveness of seperated layer water injection.
Description of drawings
Fig. 1 and 2 is an inflatable packer upper and lower part structural representation;
Fig. 3 is an inflatable packer top partial structurtes sketch map;
Fig. 4 is an inflatable packer bottom partial structurtes sketch map;
Fig. 5 is inflatable packer packed-piston and inwall annular groove sketch map thereof.
The specific embodiment
Embodiment:
Embodiment referring to figs. 1 through 4 pairs of the utility model further specifies:
Top connection 1 lower internal thread connects central tube 17, and external screw thread is connected with the upper joint sleeve 3 that annular space is suppressed radial hole 12, and the joint face place is provided with sealing ring 2.Last seating nipple 14 is ladder barrel shape, and it is provided with the first terrace inwall suit central tube 17 of opening 8 and following opening 11, outer wall suit packed-piston 5.The second terrace external screw thread connects upper joint sleeve 3, and internal thread connects goes up vulcanized joint 15.The 3rd terrace inwall suit expansion packing element 16.Packed-piston 5 inwalls are provided with the annular groove 9 that can be communicated with opening 8 and following opening 11; Packed-piston 5 is located between upper joint sleeve 3 and the last seating nipple 14; The joint face place is provided with sealing ring 10 and sulfuration cushion rubber 13; Packed-piston 5 inwall convex shoulders attach central tube 17 in last seating nipple 14 tops, central tube 17 tube walls are provided with the radial pressure balance pipe 4 and deblocking pressure guide hole 7 to packed-piston 5, also are provided with and radially set pressure guide hole 22.The sulfuration of expansion packing element 16 upper end inwalls connects goes up vulcanized joint 15, and inwall sulfuration in lower end connects vulcanized joint 18 down, and three's inwall all attaches central tube 17, and expansion packing element 16 lower ends are sleeved on down in the seating nipple 19.
The following seating nipple 19 inwall convex shoulders vulcanized joint 18 that is threaded down, inwall lower end suit lower contact 25, and joint face is provided with circle sealing 24.Lower contact 25 inner threads connect central tube 17.In the space that seating nipple 19 inwall convex shoulders, lower contact 25 and central tube 17 form down, ecto-entad is suit look nut 20, sheath 23 and sealing shroud 21 successively.
The function declaration of inflatable packer critical piece is following:
The inlet of the annular space pressurizing port 12 of upper joint sleeve 3 annular fluid during as inflatable packer deblocking, well-flushing.In separating shut-in well and washing well process, the deblocking pressure guide hole 7 of central tube 17 interconnects with following opening 11 with the last opening 8 of last seating nipple 14, and outer fluid is communicated with in realizing, balance packer external and internal pressure reaches the release effect.The inlet that sets pressure guide hole 22 central tube 17 internal flows when setting of central tube 17 as inflatable packer.Look nut 20 is in order to control rubber sealing boot 21 compression degrees, and rubber sealing boot 21 compressions are apart from big more, and it is high more to set pressure in the oil pipe that setting force needs, and 3000m is adjusted to 12Mpa generally speaking with the pressure that sets of interior well.Upper and lower vulcanized joint 15 is connected with 16 sulfurations of expansion packing element with 18, can improve the sealing performance of expansion packing element 16, can make things convenient for again with the rigid thread of seating nipple to be connected.
Sketch the operating principle of novel expanded formula packer:
1. set process:
This packer is to adopt the packing element expansion to realize setting the novel expanded formula packer of function; After central tube 17 tube fluids set the space of pressure guide hole 22 entering look nuts 20 upper ends through it; Inwall along expansion packing element 17 upwards flows, when fluid arrives the following opening 11 of going up seating nipple 14, and O RunddichtringO 10 and the 13 fluid-encapsulated outlets of sulfuration cushion rubber; Fluid is increased at expansion packing element 16 inwalls gradually, and its hydraulic boosting expansion packing element 16 expansions set.Set the annular space of process medium fluid, for expansion packing element 16 provides back pressure through pressure compensation opening 4 entering packed-pistons 5 upper ends.When the oil pipe release, setting pressure guide hole 22 does not have the fluid inflow again, the last end spaces of fluid reflux to the look nut 20 in the expansion packing element 16, and compressing rubber sealing shroud 21 is blocked its radial dilatation and is set pressure guide hole 22, stops the fluid release.Look nut 20 can be adjusted the pressure that sets of packer through the decrement of control rubber sealing boot 21.
2, deblocking process: annular fluid enters into packed-piston 5 lower ends through annular distance pressurizing port 12; The liquid boosting packed-piston 5 and is moved upward; Its inwall annular groove 9 covers the last opening 8 and following opening 11 of seating nipple 14 simultaneously, and two holes are interconnected, and makes the packer internal and external pressure balance; Expansion packing element 16 is regained under elastic reaction, realizes packer release deblocking.
3, anti-flushing well process: can realize the anti-flushing well cyclic process under the deblocking condition.
Claims (1)
1. inflatable packer is characterized in that:
Top connection (1) lower internal thread connects central tube (17), and external screw thread is connected with annular space and suppresses the upper joint sleeve of radial hole (12) (3), and the joint face place is provided with sealing ring (2); Last seating nipple (14) is ladder barrel shape, and it is provided with the first terrace inwall suit central tube (17) of opening (8) and following opening (11), outer wall suit packed-piston (5); The second terrace external screw thread connects upper joint sleeve (3), and internal thread connects goes up vulcanized joint (15); The 3rd terrace inwall suit expansion packing element (16); Packed-piston (5) inwall is provided with the annular groove (9) that can be communicated with opening (8) and following opening (11); Packed-piston (5) is located between upper joint sleeve (3) and the last seating nipple (14); Be provided with sealing ring (10 and 13) between joint face; Packed-piston (5) inwall convex shoulder attaches central tube (17) in last seating nipple (14) top, and central tube (17) is provided with radial pressure balance pipe (4), deblocking pressure guide hole (7) and sets pressure guide hole (22); Expansion packing element (16) upper end inwall sulfuration connects goes up vulcanized joint (15), and inwall sulfuration in lower end connects vulcanized joint (18) down, and three's inwall all attaches central tube (17), and expansion packing element (16) lower end is sleeved on down in the seating nipple (19);
Following seating nipple (19) the inwall convex shoulder vulcanized joint (18) that is threaded down, inwall lower end suit lower contact (25), and joint face is provided with circle sealing (24); Lower contact (25) inner thread connects central tube (17); In the space that seating nipple (19) inwall convex shoulder, lower contact (25) and central tube (17) form down, ecto-entad is suit look nut (20), sheath (23) and sealing shroud (21) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200873023U CN202531093U (en) | 2012-03-09 | 2012-03-09 | Expanding packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200873023U CN202531093U (en) | 2012-03-09 | 2012-03-09 | Expanding packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531093U true CN202531093U (en) | 2012-11-14 |
Family
ID=47132283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200873023U Expired - Fee Related CN202531093U (en) | 2012-03-09 | 2012-03-09 | Expanding packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531093U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252834A (en) * | 2017-07-13 | 2019-01-22 | 中国石油化工股份有限公司 | The concentric long-acting layered water filler of binary channels and method |
| CN109681146A (en) * | 2018-04-16 | 2019-04-26 | 中国石油化工股份有限公司 | Double medium multistage amplificate packers and card encapsulation method |
| CN111827920A (en) * | 2019-04-22 | 2020-10-27 | 中国石油天然气股份有限公司 | Layered gas channeling plugging process for fireflooding production well |
-
2012
- 2012-03-09 CN CN2012200873023U patent/CN202531093U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252834A (en) * | 2017-07-13 | 2019-01-22 | 中国石油化工股份有限公司 | The concentric long-acting layered water filler of binary channels and method |
| CN109252834B (en) * | 2017-07-13 | 2024-05-24 | 中国石油化工股份有限公司 | Concentric double-channel long-acting layered water injection device and method |
| CN109681146A (en) * | 2018-04-16 | 2019-04-26 | 中国石油化工股份有限公司 | Double medium multistage amplificate packers and card encapsulation method |
| CN111827920A (en) * | 2019-04-22 | 2020-10-27 | 中国石油天然气股份有限公司 | Layered gas channeling plugging process for fireflooding production well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20210309 |