CN202850934U - Water injection separated layer packer - Google Patents
Water injection separated layer packer Download PDFInfo
- Publication number
- CN202850934U CN202850934U CN 201220514487 CN201220514487U CN202850934U CN 202850934 U CN202850934 U CN 202850934U CN 201220514487 CN201220514487 CN 201220514487 CN 201220514487 U CN201220514487 U CN 201220514487U CN 202850934 U CN202850934 U CN 202850934U
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- CN
- China
- Prior art keywords
- control valve
- valve seat
- packing element
- rubber sleeve
- connector
- Prior art date
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- Expired - Fee Related
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Abstract
A water injection separated layer packer comprises an upper connector, an upper control valve seat, an isolation control piston, a cylinder sleeve, a spring, a rubber sleeve retraction control valve, a lower control valve seat, a rubber sleeve connector, a rubber sleeve, a rubber sleeve sheath, a lower connector, a rubber sleeve expansion control valve and a central tube. The exterior of the upper connector is connected with the cylinder sleeve, the rubber sleeve, the rubber sleeve sheath and the lower connector in sequence. The interior of the upper connector is connected with the upper control valve seat, the lower control valve seat, the central tube and the lower connector in sequence. The isolation control piston is arranged in an annular space between the upper control valve seat and the cylinder sleeve. The spring and the rubber sleeve retraction control valve are arranged between the upper control valve seat and the lower control valve seat in sequence. An annular space is formed between the rubber sleeve connector, the rubber sleeve, the rubber sleeve sheath and the central tube. The water injection separated layer packer has the advantages of being high in layering reliability, convenient and simple in technique implementation, capable of separating layers, unblocked in well washing, free of scaling on a well washing valve, tight in closing, and capable of being opened, having no layer cross flow phenomenon when injection is stopped, and the like, and is widely applied to separated layer water injection technology in oil exploitation.
Description
Technical field
The utility model relates to the oil exploitation layered water injection tool, particularly a kind of water filling layer separating packer.
Background technology
The common tool of at present seperated layer water injection has well packer capable of flushing well, adopt the flushing valve structure, the well packer capable of flushing well of this structure, for effect has been brought into play in seperated layer water injection, but it exists following shortcoming and defect simultaneously: 1. in use, flushing valve fouling or damaged causes fitting badly, not opening; When 2. stopping annotating, the pipe internal and external pressure balance, there is pressure reduction in interlayer, and layer is altered; 3. layering reliability is low; 4. process implementing is complicated, inconvenient operation; 6. can not satisfy that layering is separated, well-flushing is washed De Tong and the requirement of high flow rate washover.
Summary of the invention
Order of the present utility model provides a kind of improved water filling layer separating packer, and employing two puts the structure of control valve seat, isolated controlling piston, spring, lower control valve seat, the shortcoming and defect that effectively overcomes or avoid existing in the above-mentioned prior art.
Water filling layer separating packer described in the utility model comprises top connection, upper control valve seat, isolated controlling piston, cylinder sleeve, spring, packing element retraction control valve, lower control valve seat, packing element connector, packing element, packing element sheath, lower contact, packing element expansion control valve, central tube.Described top connection is connected with cylinder sleeve, packing element, packing element sheath, lower contact outward in turn, be connected with upper control valve seat, lower control valve seat, central tube, lower contact in turn in the top connection, the isolated controlling piston is installed in the annular space between upper control valve seat, the cylinder sleeve, spring, packing element retraction control valve are installed between upper control valve seat and the lower control valve seat in turn, are provided with annular space between packing element connector, packing element, packing element sheath and the central tube.
Wherein, described upper control valve seat, isolated controlling piston, spring, lower control valve seat are two covers, are divided into the both sides between top connection, lower contact and the central tube.Described packing element expansion control valve is installed on the upper end of the spring of another side.The two ends of described packing element are equipped with the packing element connector.
The utility model has following advantage compared with prior art:
1, layering reliability is high, and process implementing is simple and convenient, can satisfy layering and separate, and well-flushing is washed logically, high flow rate washover.
2, in use, flushing valve is without fouling or meet with to damage phenomenon, Guan Deyan, beats to such an extent that open.
When 3, stopping annotating, the pipe internal and external pressure balance though interlayer has pressure reduction, is altered without layer.
Description of drawings
Fig. 1 is a kind of example structure schematic diagram of the present utility model.
The specific embodiment
Consult Fig. 1, a kind of water filling layer separating packer, comprise top connection 1, upper control valve seat 2, isolated controlling piston 3, cylinder sleeve 4, spring 5, packing element retraction control valve 6, lower control valve seat 7, packing element connector 8, packing element 9, packing element sheath 10, lower contact 11, packing element expansion control valve 12, central tube 13, it is characterized in that described top connection 1 outer in turn with cylinder sleeve 4, packing element 9, packing element sheath 10, lower contact 11 is connected, in the top connection 1 in turn with upper control valve seat 2, lower control valve seat 7, central tube 13, lower contact 11 is connected, upper control valve seat 2, isolated controlling piston 3 is installed in the annular space between the cylinder sleeve 4, between upper control valve seat 2 and the lower control valve seat 7 spring 5 is installed in turn, packing element retraction control valve 6, packing element connector 8, packing element 9, be provided with annular space between packing element sheath 10 and the central tube 13.
Upper control valve seat 2, isolated controlling piston 3, spring 5, lower control valve seat 7 are two covers, are divided into the both sides between top connection 1, lower contact 11 and the central tube 13.Packing element expansion control valve 12 is installed on the upper end of the spring 4 of another side.The two ends of packing element 9 are equipped with packing element connector 8.
During use, fill first certain hydraulic oil with at isolated controlling piston 3 and the inner chamber of packing element 9; During seperated layer water injection, water injection pressure acts on the isolated controlling piston 3, make descent of piston, hydraulic fluid pressure in the piston acts on the packing element expansion control valve 12, the packing element expansion control valve 12 descending passages of opening, hydraulic oil in the chamber opens packing element, set packer by in the annular space that is pressed onto the packing element inner chamber in the piston; When stopping annotating, packing element expansion control valve 12 sets back under the effect of spring 5, blocks oil flow channel, and packer keeps setting state.
During well-flushing, when water injection well needs well-flushing, by anti-flushing well, to suppress from the oil jacket annular space, pressure-acting is in the outside of packing element, hydraulic oil in the compression packing element 9, act on packing element retraction control valve 6, the hydraulic oil in the packing element flows back in the control piston 3 removing seal for packer, packing element reclaims, and can realize large discharge capacity anti-flushing well technique.
Claims (4)
1. water filling layer separating packer, comprise top connection, upper control valve seat, the isolated controlling piston, cylinder sleeve, spring, packing element retraction control valve, lower control valve seat, the packing element connector, packing element, the packing element sheath, lower contact, packing element expansion control valve, central tube, it is characterized in that described top connection outward in turn with cylinder sleeve, packing element, the packing element sheath, lower contact is connected, in the top connection in turn with upper control valve seat, lower control valve seat, central tube, lower contact is connected, upper control valve seat, the isolated controlling piston is installed in the annular space between the cylinder sleeve, between upper control valve seat and the lower control valve seat spring is installed in turn, packing element retraction control valve, the packing element connector, packing element, be provided with annular space between packing element sheath and the central tube.
2. water filling layer separating packer according to claim 1 is characterized in that described upper control valve seat, isolated controlling piston, spring, lower control valve seat are two covers, is divided into the both sides between top connection, lower contact and the central tube.
3. water filling layer separating packer according to claim 1 is characterized in that described packing element expansion control valve is installed on the upper end of the spring of another side.
4. water filling layer separating packer according to claim 1 is characterized in that the two ends of described packing element are equipped with the packing element connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514487 CN202850934U (en) | 2012-10-09 | 2012-10-09 | Water injection separated layer packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514487 CN202850934U (en) | 2012-10-09 | 2012-10-09 | Water injection separated layer packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202850934U true CN202850934U (en) | 2013-04-03 |
Family
ID=47982144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220514487 Expired - Fee Related CN202850934U (en) | 2012-10-09 | 2012-10-09 | Water injection separated layer packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202850934U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452524A (en) * | 2013-08-27 | 2013-12-18 | 中国海洋石油总公司 | Electrically-flushable packer and electrically-flushable insert seal for flooding well |
| CN107916910A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Independent hydraulic control packer pressure valve |
-
2012
- 2012-10-09 CN CN 201220514487 patent/CN202850934U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452524A (en) * | 2013-08-27 | 2013-12-18 | 中国海洋石油总公司 | Electrically-flushable packer and electrically-flushable insert seal for flooding well |
| CN103452524B (en) * | 2013-08-27 | 2016-02-10 | 中国海洋石油总公司 | Water injection well with can electric well flushing packer and can electric well flushing insert sealing |
| CN107916910A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Independent hydraulic control packer pressure valve |
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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: 20130403 Termination date: 20131009 |