CN201221335Y - Water injection packer - Google Patents
Water injection packer Download PDFInfo
- Publication number
- CN201221335Y CN201221335Y CNU2008200255405U CN200820025540U CN201221335Y CN 201221335 Y CN201221335 Y CN 201221335Y CN U2008200255405 U CNU2008200255405 U CN U2008200255405U CN 200820025540 U CN200820025540 U CN 200820025540U CN 201221335 Y CN201221335 Y CN 201221335Y
- Authority
- CN
- China
- Prior art keywords
- well
- packing element
- rubber cylinder
- joint
- water injection
- 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
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a water injection packer, which comprises an upper joint, an inner tube and a lower joint, which are linked in sequence. A sheath is sleeved outside the upper joint; a well cleaning piston is arranged between the sheath and the inner tube; the lower part of the sheath is linked with an upper rubber cylinder; a rubber cylinder is arranged in the upper rubber cylinder joint and the lower rubber cylinder joint; a rubber cylinder liner tube is positioned in the rubber cylinder; the upper part of the rubber cylinder liner tube is linked with the upper rubber cylinder joint, and the lower part is linked with the upper part of the well cleaning joint; the lower part of the well cleaning joint is connected with the upper part of a check valve; the lower part of the check valve is arranged outside the lower joint; a pressure transmission hole is positioned at the upper part of the inner tube; a well cleaning channel is arranged between the inner tube and the rubber cylinder liner tube; the well cleaning joint is provided with a packing linkage hole and a well cleaning linkage hole; and a liquid feeding linkage hole is arrange at the lower part of the inner tube. The lower part of the check valve is fixed on the lower joint by an unblocking pin. A necking section is arranged at the lower part of the inner tube. When the water injection into the well is stopped, the packing can not be unblocked, and the rubber cylinder can not be repeatedly shrinked and expanded. When the requirement that the packing is not unblocked after the water injection is stopped is satisfied, the inverse well-flushing can be realized; the water injection period of the water injection well can be prolonged; the times for well workover can be reduced; and the economic benefits can be improved.
Description
One, technical field
The present invention is the laminated distributor under well water filling instrument that oil-field flooding is used, and is a kind of water injection packer.
Two, background technology
The expanding water injection packer that oil-field flooding is used is that packing element expands outwardly when the packing element internal pressure is higher than the packing element external pressure, realizes the purpose of sealing oil casing annular space.In the time will in well, tripping out the expanding water injection packer, need the packing element internal pressure to be equal to or less than the packing element external pressure, packing element is shunk.For the packing element external and internal pressure is changed, the expanding water injection packer is provided with the injection channel.But the injection channel of present expanding water injection packer is two-way, and after well stopped to annotate for some reason, the packing element internal pressure descended, and packing element shrinks.When recovering water filling, the packing element internal pressure rises, the packing element expansion.If when stopping for some reason to annotate often, packing element shrinks repeatedly, just expands and damage easily, cause the separated-zone water infection oil field well can not quantitative injection, make its layer water injection rate that has exceed the injection allocation amount, the layer water injection rate that has is not enough, becomes and shorts layer, does not reach the reasonable benefit of water flooding.Chinese patent application 00202259.1 (pressure reduction expand envelope backwash desealed water injection packer), the injection channel is unidirectional when not having anti-flushing well, and after can avoiding stopping for some reason annotating, packing element shrinks, and the problem of expanding again during water filling can avoid packing element to damage again.But it seals up the sleeve pipe annular space all the time, does not have the well-flushing passage, can not carry out anti-flushing well, causes the water injection well working time short, influences field produces.
Three, summary of the invention
The water injection packer that the purpose of this invention is to provide a kind of back-washable well.
The object of the present invention is achieved like this: by top connection, sheath, the well-flushing piston, gluing socket joint head, interior pipe, packing element, the packing element bushing pipe, Flush coupling, the lower rubber cylinder joint, ball-and-seat, lower contact is formed, thread connection on screw thread and the interior pipe under the top connection, thread connection in screw thread and the lower contact under the interior pipe, the outer suit sheath of top connection, the well-flushing piston is installed between sheath and the interior pipe under the top connection, connect gluing socket joint head under the sheath, packing element top is installed in the gluing socket joint head, the packing element bottom is installed in the lower rubber cylinder joint, the packing element bushing pipe is arranged in the packing element, packing element bushing pipe top connects with gluing socket joint head, packing element bushing pipe bottom connects with Flush coupling top, the Flush coupling bottom connects with ball-and-seat top, the ball-and-seat bottom is in outside the lower contact, and pressure transmission hole is arranged at interior pipe top, between interior pipe and the packing element bushing pipe well-flushing passage is arranged, seat envelope linked hole and well-flushing linked hole are arranged on the Flush coupling, and the feed liquor linked hole is arranged at interior pipe bottom.
The ball-and-seat bottom by the deblocking dowel fixes in lower contact.
The undergauge section is arranged at interior pipe bottom.
The invention has the beneficial effects as follows: deblocking not when well stops annotating, packing element can not shrink repeatedly, expand, so packing element can not damage, and the packer life-span is long.The present invention is provided with the well-flushing passage, not under the requirement of deblocking, can realize anti-flushing well when satisfying well and stop annotating, and can prolong the water injection cycle of water injection well, reduces the well workover number of times, increases economic efficiency.
Four, description of drawings
Accompanying drawing is a structure assembling drawing of the present invention.
Five, the specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated.
Embodiments of the invention are by top connection 1, sheath 2, well-flushing piston 3, gluing socket joint head 4, interior pipe 5, packing element 6, packing element bushing pipe 7, Flush coupling 8, lower rubber cylinder joint 9, ball-and-seat 10, lower contact 12 is formed, thread connection on 1 time screw thread of top connection and the interior pipe 5, thread connection in 5 times screw threads of interior pipe and the lower contact 12, top connection 1 outer suit sheath 2, well-flushing piston 3 is installed between sheath 2 and the interior pipe 5 under the top connection 1, connect gluing socket joint head 4 under the sheath 2, packing element 6 tops are installed in the gluing socket joint head 4, packing element 6 bottoms are installed in the lower rubber cylinder joint 9, packing element bushing pipe 7 is arranged in the packing element 6, packing element bushing pipe 7 tops connect with gluing socket joint head 4, packing element bushing pipe 7 bottoms connect with Flush coupling 8 tops, Flush coupling 8 bottoms connect with ball-and-seat 10 tops, ball-and-seat 10 bottoms are in outside the lower contact 12, and pressure transmission hole 13 is arranged at interior pipe 5 tops, between interior pipe 5 and the packing element bushing pipe 7 well-flushing passage 14 is arranged, seat envelope linked hole 15 and well-flushing linked hole 17 are arranged on the Flush coupling 8, and feed liquor linked hole 16 is arranged at interior pipe 5 bottoms.Ball-and-seat 10 bottoms are fixed in the lower contact 12 by deblocking pin 11.Undergauge section 18 is arranged at interior pipe 5 bottoms.
During water filling, under the effect of pressure transmission hole 13, well-flushing piston 3 is in closed condition, and well-flushing passage 14 is closed, and injects water and enters between packing element 6, the packing element bushing pipe 7 through feed liquor linked hole 16, ball-and-seat 10, seat envelope linked hole 15, makes packing element 6 expansion back Seal Oil sleeve pipes.When stopping annotating, the valve ball on the ball-and-seat 10 resets under spring action, and the water in the packing element 6 can not flow out, and therefore, packing element 6 can not shrink yet after water injection well stops to annotate for some reason, and packing element 8 can not shrink repeatedly, expand and damage.
During anti-flushing well, well-flushing water is squeezed into from sleeve pipe, on the sheath 2 sieve aperture is arranged, and well-flushing piston 3 is up, and well-flushing passage 14 is opened, and well-flushing water flows to the packer bottom through well-flushing passage 14, well-flushing linked hole 17, upwards flows out through interior pipe, thereby realizes circulation well cleanup.
During deblocking, on carry water injection string, packing element 6 expansion is producing frictional force between back and the sleeve pipe on the sleeve pipe, deblocking pin 11 is cut off, in pipe 5 up, interior pipe 5 bottom undergauge sections 18 are sealed linked hole 15 and feed liquor linked hole 16 UNICOMs with seat, pressure releases realize deblockings in the packing element 6.
Claims (3)
1, a kind of water injection packer, it is characterized in that: by top connection (1), sheath (2), well-flushing piston (3), gluing socket joint head (4), interior pipe (5), packing element (6), packing element bushing pipe (7), Flush coupling (8), lower rubber cylinder joint (9), ball-and-seat (10), lower contact (12) is formed, screw thread and interior pipe (5) are gone up thread connection under the top connection (1), thread connection is gone up in screw thread and lower contact (12) under the interior pipe (5), the outer suit sheath of top connection (1) (2), well-flushing piston (3) is installed between sheath (2) and the interior pipe (5) under the top connection (1), connect gluing socket joint head (4) under the sheath (2), packing element (6) top is installed in the gluing socket joint head (4), packing element (6) bottom is installed in the lower rubber cylinder joint (9), packing element bushing pipe (7) is arranged in the packing element (6), packing element bushing pipe (7) top connects with gluing socket joint head (4), packing element bushing pipe (7) bottom connects with Flush coupling (8) top, Flush coupling (8) bottom connects with ball-and-seat (10) top, ball-and-seat (10) bottom is in outside the lower contact (12), pressure transmission hole (13) is arranged at interior pipe (5) top, between interior pipe (5) and the packing element bushing pipe (7) well-flushing passage (14) is arranged, seat envelope linked hole (15) and well-flushing linked hole (17) are arranged on the Flush coupling (8), and feed liquor linked hole (16) is arranged at interior pipe (5) bottom.
2, water injection packer according to claim 1 is characterized in that: ball-and-seat (10) bottom is fixed in the lower contact (12) by deblocking pin (11).
3, water injection packer according to claim 1 is characterized in that: undergauge section (18) is arranged at interior pipe (5) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200255405U CN201221335Y (en) | 2008-07-08 | 2008-07-08 | Water injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200255405U CN201221335Y (en) | 2008-07-08 | 2008-07-08 | Water injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221335Y true CN201221335Y (en) | 2009-04-15 |
Family
ID=40574844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200255405U Expired - Fee Related CN201221335Y (en) | 2008-07-08 | 2008-07-08 | Water injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221335Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN105507846A (en) * | 2016-01-22 | 2016-04-20 | 东营市兆鑫工贸有限责任公司 | Expandable fracture packer for preventing midway setting |
| CN108361000A (en) * | 2018-05-21 | 2018-08-03 | 中国石油化工股份有限公司 | Ultradeep well seperated layer water injection open hole packer |
-
2008
- 2008-07-08 CN CNU2008200255405U patent/CN201221335Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN101915070B (en) * | 2010-08-23 | 2013-01-23 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN105507846A (en) * | 2016-01-22 | 2016-04-20 | 东营市兆鑫工贸有限责任公司 | Expandable fracture packer for preventing midway setting |
| CN108361000A (en) * | 2018-05-21 | 2018-08-03 | 中国石油化工股份有限公司 | Ultradeep well seperated layer water injection open hole packer |
| CN108361000B (en) * | 2018-05-21 | 2024-05-07 | 中国石油化工股份有限公司 | Open hole packer for ultra-deep well separate layer water injection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 |