CN104563946A - Multilayer separate injection well step-by-step deblocking packer - Google Patents
Multilayer separate injection well step-by-step deblocking packer Download PDFInfo
- Publication number
- CN104563946A CN104563946A CN201310520883.4A CN201310520883A CN104563946A CN 104563946 A CN104563946 A CN 104563946A CN 201310520883 A CN201310520883 A CN 201310520883A CN 104563946 A CN104563946 A CN 104563946A
- Authority
- CN
- China
- Prior art keywords
- packer
- deblocking
- well
- piston
- ring
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 title abstract description 7
- 239000007924 injection Substances 0.000 title abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 19
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000011010 flushing procedure Methods 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 15
- 210000002445 nipple Anatomy 0.000 claims description 10
- 238000000151 deposition Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 238000011001 backwashing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 206010055018 Gingival cyst Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 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
- E21B33/122—Multiple string packers
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)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention discloses a step-by-step deblocking packer for a multilayer separate injection well, which is designed for realizing step-by-step deblocking of the packer and reducing the risk of tripping. The upper end and the lower end of a central tube of the packer are respectively connected with an upper joint and a lower joint, and the outer wall of the central tube is sleeved with a liner tube; the upper part of the central tube is connected with an unsealing piston, a sleeved spring, a well washing piston, a trapezoidal rubber ring, a rubber ring pressing cap and a pressing cap on a sleeved liner tube; the upper end and the lower end of the working barrel are respectively connected with an upper joint and a pressing cap; the liner tube is sleeved with an edge rubber spacer ring, a middle rubber cylinder and a locking ring hanger; the locking ring is sleeved with the locking ring hanger and connected with the seat seal piston. The upper end and the lower end of the lower working barrel are respectively connected with the locking ring hanger and the lower joint. This packer changes the transfer mode of deblocking position and deblocking power on conventional packer, makes a plurality of packers establish ties and uses to the deblocking step by step can satisfy the requirement that multilayer separated injection well tripping load is little, reduces the tripping risk. The packer adopts a hydraulic setting mode, is reliable in setting, and has the functions of setting self-locking and backwashing.
Description
Technical field
The present invention relates to a kind of depositing well gradually deblocking packer, belong to multilevel hierarchy water injection well development technique field.
Background technology
At present, along with the deep exploitation in oil field, meticulous seperated layer water injection improves one of most economical effective means of recovery ratio under a well pattern.Water injection well is multiple packer because depositing have employed, not easily deblocking, causes separate injection tubing string trip-out accident.Existing packer cannot meet the requirement of depositing gradually deblocking.
Summary of the invention
The object of the present invention is to provide a kind of depositing well gradually deblocking packer, the packer used to make series connection realizes gradually deblocking, reduces trip-out risk.
Concrete technology contents of the present invention is as follows:
The central tube tube wall of this packer is provided with down and sets pressure guide hole and lower well washing hole, and in the middle part of tube wall, cover is equiped with the bushing pipe of upper and lower well washing hole, and central tube upper external screw thread connects top connection, and lower end external screw thread connects lower contact, and is sealed by sealing ring.Central tube upper external thread is connected with the deblocking piston of interior exterior seal ring, and downwards by the well-flushing piston of exterior seal ring in pocketed springs and band.Well-flushing piston lower portion and trapezoidal cushion rubber are located in the cushion rubber pressure cap on suit bushing pipe, are the pressure cap on suit bushing pipe below cushion rubber pressure cap.The upper seating nipple upper end internal thread being provided with lower well washing hole connects top connection, and lower end internal thread connects pressure cap.Below pressure cap be on suit bushing pipe, by the limit packing element at spacer ring interval and middle packing element.Be on suit bushing pipe, to be provided with well washing hole lock ring extension below the packing element of limit, lock ring is sleeved on lock ring and hangs lower end and connect setting piston that supported by lower contact, the interior exterior seal ring of band.Lower seating nipple upper end connects lock ring extension by setting pin, and lower end internal thread connects lower contact.
This packer changes the transfer mode of deblocking position and deblocking power on conventional packer, multiple packer is connected and uses, and energy gradually deblocking, meet the requirement that depositing well trip-out load is little, reduce trip-out risk.This packer adopts hydraulic setting mode, sets reliable, also has concurrently and set self-locking and anti-flushing well function.
Accompanying drawing explanation
Fig. 1 is depositing well gradually deblocking packer structural representation.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
This packer mainly comprises top connection 1, upper seating nipple 2, deblocking pin 3, deblocking piston 4, spring 5, central tube 6, well-flushing piston 7, cushion rubber pressure cap 8, trapezoidal cushion rubber 9, pressure cap 10, limit packing element 11, spacer ring 12, middle packing element 13, bushing pipe 14, lower seating nipple 15, lock ring extension 16, lock ring 17, setting piston 18, lower contact 19 and sets pin 20, well-flushing pressure guide hole 22, O-ring seal 23, well washing hole 24, well-flushing through hole 26, O-ring seal 27
Central tube 6 tube wall is provided with down and sets pressure guide hole and lower well washing hole, and in the middle part of tube wall, cover is equiped with the bushing pipe 14 of upper and lower well washing hole, and central tube 6 upper external screw thread connects top connection 1, and lower end external screw thread connects lower contact 19, and is sealed by sealing ring.Central tube 6 upper external thread is connected with the deblocking piston 4 of interior exterior seal ring, and downwards by the well-flushing piston 7 of exterior seal ring in pocketed springs 5 and band.Well-flushing piston 7 bottom and trapezoidal cushion rubber 9 are located in the cushion rubber pressure cap 8 on suit bushing pipe 14, are the pressure cap 10 on suit bushing pipe 14 below cushion rubber pressure cap 8.The upper seating nipple 2 upper end internal thread being provided with lower well washing hole connects top connection 1, and lower end internal thread connects pressure cap 10.Below pressure cap 10 be on suit bushing pipe 14, by the limit packing element 11 at spacer ring 12 interval and middle packing element 13.Be be set with on bushing pipe 14, to be provided with well washing hole lock ring to hang 16 below limit packing element 11, lock ring 17 is sleeved on lock ring and hangs 16 lower ends and connect setting piston 18 that supported by lower contact 19, the interior exterior seal ring of band.Lower seating nipple 15 upper end connects lock ring extension 16 by setting pin 20, and lower end internal thread connects lower contact 19.
Operating principle of the present invention is as follows:
Set function: with oil pipe by this device G.I.H.During packer setting, exerted pressure outside pipe by the lower setting pressure guide hole on central tube 6, promote setting piston 18, lock ring hang 16 and lock ring 17 cut off to set on after pin 20 and move, compression limit packing element 11 and middle packing element 13, sealing oil sets annular space, and tightly set by the gingival cyst of mucous gland in the newborn padlock that lock ring is hung between 16 and lock ring 17, realize setting.
Anti-flushing well function: time setting, lock ring is hung well washing hole and bushing pipe 14 times well washing holes on 16 and is communicated with; During anti-flushing well, add hydraulic pressure from sleeve pipe, flushing fluid enters from upper seating nipple 2 times well washing holes, promotes cushion rubber pressure cap 8, trapezoidal cushion rubber 9 and well-flushing piston 7 move; Trapezoidal cushion rubber 9 moves and enters well washing hole on bushing pipe 14,, well washing hole and the well-flushing channel connection between bushing pipe 14 and central tube 6 on bushing pipe 14, hydraulic pressure conducts to oil jacket annular space downwards by the well-flushing passage between bushing pipe 14 and central tube 6, make hydraulic pressure walk around packing element, realize anti-flushing well function.
Gradually deblocking function: upper lifting pipe post, top connection 1 drives on upper seating nipple 2 and pressure cap 10 and moves, and the deblocking pin 3 on deblocking piston 4 is cut off, and packing element, by natural resiliency diastole, realizes deblocking.Pressure cap 10 drives on cushion rubber pressure cap 8, trapezoidal cushion rubber 9, well-flushing piston 7, spring 5 and deblocking piston 4 and moves simultaneously, and central tube 6 moves with on deblocking piston 4, thus realizes the gradually deblocking of multiple-string packer.
Claims (1)
1. a depositing well gradually deblocking packer, is characterized in that:
Central tube (6) tube wall is provided with down and sets pressure guide hole and lower well washing hole, in the middle part of tube wall, cover is equiped with the bushing pipe (14) of upper and lower well washing hole, central tube (6) upper external screw thread connects top connection (1), lower end external screw thread connects lower contact (19), and is sealed by sealing ring; Central tube (6) upper external thread is connected with the deblocking piston (4) of interior exterior seal ring, and downwards by the well-flushing piston (7) of exterior seal ring in pocketed springs (5) and band; Well-flushing piston (7) bottom and trapezoidal cushion rubber (9) are located in the cushion rubber pressure cap (8) on suit bushing pipe (14), and cushion rubber pressure cap (8) below is the pressure cap (10) on suit bushing pipe (14); Upper seating nipple (2) the upper end internal thread being provided with lower well washing hole connects top connection (1), and lower end internal thread connects pressure cap (10); Pressure cap (10) below be on suit bushing pipe (14), by the limit packing element (11) at spacer ring (12) interval and middle packing element (13); Limit packing element (11) below is on suit bushing pipe (14), to be provided with well washing hole lock ring extension (16), and lock ring (17) is sleeved on lock ring and hangs (16) lower end and connect setting piston (18) that supported by lower contact (19), the interior exterior seal ring of band; Lower seating nipple (15) upper end connects lock ring extension (16) by setting pin (20), and lower end internal thread connects lower contact (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310520883.4A CN104563946A (en) | 2013-10-29 | 2013-10-29 | Multilayer separate injection well step-by-step deblocking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310520883.4A CN104563946A (en) | 2013-10-29 | 2013-10-29 | Multilayer separate injection well step-by-step deblocking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104563946A true CN104563946A (en) | 2015-04-29 |
Family
ID=53080931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310520883.4A Pending CN104563946A (en) | 2013-10-29 | 2013-10-29 | Multilayer separate injection well step-by-step deblocking packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104563946A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529068A (en) * | 2019-08-14 | 2019-12-03 | 中国石油天然气股份有限公司 | Special packer for underground non-metal pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2929163Y (en) * | 2006-04-10 | 2007-08-01 | 中国石化股份胜利油田分公司孤东采油厂 | Hydropower compression type packer |
| CN101498204A (en) * | 2009-02-25 | 2009-08-05 | 大庆油田有限责任公司 | Balance type step-by-step releasable flushing packer |
| CN201546663U (en) * | 2009-11-11 | 2010-08-11 | 中国石油天然气股份有限公司 | Packer of high-efficient water injection washable well |
| CN202531090U (en) * | 2012-03-01 | 2012-11-14 | 中国石油天然气股份有限公司 | Well-flushing packer for separate injection of oil sleeve of casing water injection well |
| CN202810775U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | Large-pressure-difference well-washing packer |
| CN202810773U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | Balanced stage-by-stage unpacking washable well packer |
| RU2495227C1 (en) * | 2012-04-19 | 2013-10-10 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" | Packer equipment for isolating operations in well |
-
2013
- 2013-10-29 CN CN201310520883.4A patent/CN104563946A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2929163Y (en) * | 2006-04-10 | 2007-08-01 | 中国石化股份胜利油田分公司孤东采油厂 | Hydropower compression type packer |
| CN101498204A (en) * | 2009-02-25 | 2009-08-05 | 大庆油田有限责任公司 | Balance type step-by-step releasable flushing packer |
| CN201546663U (en) * | 2009-11-11 | 2010-08-11 | 中国石油天然气股份有限公司 | Packer of high-efficient water injection washable well |
| CN202531090U (en) * | 2012-03-01 | 2012-11-14 | 中国石油天然气股份有限公司 | Well-flushing packer for separate injection of oil sleeve of casing water injection well |
| RU2495227C1 (en) * | 2012-04-19 | 2013-10-10 | Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" | Packer equipment for isolating operations in well |
| CN202810775U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | Large-pressure-difference well-washing packer |
| CN202810773U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | Balanced stage-by-stage unpacking washable well packer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529068A (en) * | 2019-08-14 | 2019-12-03 | 中国石油天然气股份有限公司 | Special packer for underground non-metal pipe |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |