CN202165055U - Same-well underground oil-water separating extraction and injection device with surface driving single-screw pump - Google Patents
Same-well underground oil-water separating extraction and injection device with surface driving single-screw pump Download PDFInfo
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- CN202165055U CN202165055U CN2011200189496U CN201120018949U CN202165055U CN 202165055 U CN202165055 U CN 202165055U CN 2011200189496 U CN2011200189496 U CN 2011200189496U CN 201120018949 U CN201120018949 U CN 201120018949U CN 202165055 U CN202165055 U CN 202165055U
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Abstract
The utility model relates to a same-well underground oil-water separating extraction and injection device with a surface driving single-screw pump. The same-well underground oil-water separating extraction and injection device with the surface driving single-screw pump is composed by connecting an improved well head device, a double-flow channel single-screw pump device, an oil-water hydrocyclone separation device and an underground setting technical pipe string in series. A well head cross joint and an oil transferring pipeline are communicated by the improved well head device to close the discharge gate of a well head tee joint, and an annular oil sleeve is utilized as a lifting flow channel for rich oil liquid after separating; and the double-flow channel single-screw pump device is provided with an outer part flow channel composed by an outer layer shell and a single-screw pump. The machine set of the device is simpler, and the cost is low, therefore, problems of high production cost, environmental pollution and the like due to over much produced water of an oil well can be effectively solved.
Description
Technical field
The utility model relates to underground oil-water and separates the same well production-injection device, relates in particular to a kind of surface drive single screw pump underground oil-water and separates the same well production-injection device.
Background technology
Along with the continuation of field produces and deeply, produce get into the middle and later periods after, oil well produces water becomes a serious problem.Aquifer yield constantly increases, and the scale that the surface water is handled is increasing, and the water treatment expense is increasingly high, and the high yield water yield becomes one of principal element of restriction field produces.The traditional mode of production mode that oil-water mixture extraction ground is separated again even surpassed the limit of oilfield economic exploitation makes some oil wells stop production too early or closes that substantial oil is stayed underground, has caused the waste of resource.Oily water separation technique under present existing underground oil-water isolation technics such as the electric immersible pump well; Solved the problem that oil well produces dilutional hyponatremia to a certain extent; But because the restriction of conditions down-hole, systematic comparison is complicated, and the likelihood ratio that breaks down is not easy diagnosis than big and fault.The surface drive single screw pump unit is simple, and equipment cost is low, is used for the underground oil-water piece-rate system and will significantly reduces cost of production.
Summary of the invention
The high problem of cost of production that causes in order to overcome present oil field product dilutional hyponatremia; The utility model provides a kind of novel underground oil-water to separate the same well production-injection device; This device has not only reduced the lifting and the disposal cost of output water; Greatly reduce cost of production, and with electric immersible pump well under oil-water separation system to compare the down-hole unit comparatively simple, reduced the investment of devices cost.
The described surface drive single screw pump underground oil-water of the utility model separates the same well production-injection device and comprises that wellhead assembly, dual channel single-screw (single screw) pump device, oil-water cyclone separator and down-hole after the improvement set process pipe string.Wellhead assembly after the improvement mainly contains polished rod clamp, reduction box, seal box, well head threeway and well head four-way and forms; Dual channel single-screw (single screw) pump device comprises single-screw (single screw) pump; Constitute the outer shell of outside runner with single-screw (single screw) pump; Connect dual channel single-screw (single screw) pump and oil pipe and also can make liquid after the pressurization return the joint of turning back of oil-water cyclone separator intake, and with the joining pump coupling head of oil-water cyclone separator; The oil-water cyclone separator comprises top three cross-channel bodies, middle part three cross-channel bodies, first order oil-water cyclone separator, second level oil-water cyclone separator and external shell; The down-hole set process pipe string by interpolation pipe, outer tube, back-off sub, packer, sliding sleeve switch, one way valve, suppress ball seat, screen casing and plug and form.
The innovation part of the utility model has been creatively to solve sealing and the runner Layout Problem that surface drive single screw pump is used for the underground oil-water piece-rate system.The utility model does not seal sucker rod in the down-hole, but use the sealing of ground wellhead assembly to polished rod dexterously, will seal from the down-hole and transfer to well head, thereby solve the sealing problem that surface drive single screw pump is used for the underground oil-water piece-rate system; Arrange through carrying out special structure design and runner, solved the runner Layout Problem that surface drive single screw pump is used for the underground oil-water piece-rate system.These innovations successfully are used for the underground oil-water piece-rate system with surface drive single screw pump, have simplified the complexity of down-hole unit greatly, have reduced cost of production.
Description of drawings
Fig. 1 is that the surface drive single screw pump underground oil-water separates same well production-injection entire system schematic flow sheet;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the B-B profile of Fig. 1;
Fig. 4 is the C-C profile of Fig. 1;
Fig. 5 is dual channel single-screw (single screw) pump device and oil pipe draw bail sketch map;
Fig. 6 is dual channel single-screw (single screw) pump device and oil-water cyclone separator draw bail sketch map.
In the drawings, 1. the polished rod clamp, 2. reduction box, 3. seal box, 4. well head threeway, 5. the well head four-way, 6. sleeve pipe, 7. oil pipe, 8. turn back joint, 9. outer shell, 10. single-screw (single screw) pump, 11. pump coupling heads, 12. tops, three cross-channel bodies, 13. first order oil-water cyclone separators, 14. external shells, 15. middle parts, three cross-channel bodies, 16. second level oil-water cyclone separators, 17. interpolation pipes, 18. outer tubes, 19. back-off subs, 20.Y441 packer, 21. sliding sleeve switches, 22.Y341 packer, 23. one way valves, 24. are suppressed ball seat, 25. screen casings, 26. plugs; A, the up runner of d. stratum production fluid, b, the e. oily-water seperating equipment sucks runner, c, f. overflow runner.
The specific embodiment
Fig. 1 is the overall structure sketch map of this system, and wellhead assembly, dual channel single-screw (single screw) pump device, oil-water cyclone separator, down-hole after improving from top to bottom set process pipe string and be cascaded.Wellhead assembly after the improvement is that well head four-way (5) is communicated with pipeline road, closes the discharge gate of well head threeway (4), and the oil jacket annular space is as the lifting runner that separates back rich oil liquid.Seal box (3) can adopt packing_seal that polished rod is sealed, and is enclosed in the highly pressurised liquid of down-hole after by single-screw (single screw) pump (10) supercharging.The turn back two ends of joint (8) link with the outlet opening of oil pipe (7), single-screw (single screw) pump (10) respectively through sealing thread; Outer shell (9) joins with the joint of turning back (8), top three cross-channel bodies (12) respectively and adds the sealing of O RunddichtringO; One end of pump coupling head (11) connects with the intake of single-screw (single screw) pump (10) through sealing thread, and the other end connects and add the sealing of O RunddichtringO through screw thread and top three cross-channel bodies (12).The oil-water cyclone separator mainly is made up of top three cross-channel bodies (12), first order oil-water cyclone separator (13), middle part three cross-channel bodies (15), second level oil-water cyclone separator (16) and external shell (14).Connect below the oil-water cyclone separator and set process pipe string, by interpolation pipe (17), outer tube (18), back-off sub (19), Y441 packer (20), sliding sleeve switch (21), Y341 packer (22), one way valve (23), suppress ball seat (24), screen casing (25) and plug (26) and form.
The highly aqueous liquid of producing zone extraction; Through sliding sleeve switch (21), the annular space of interpolation pipe (17), outer tube (18), the outside runner d of oil-water cyclone separator, a are upwards; Get into the intake of single-screw (single screw) pump (10); After single-screw (single screw) pump (10) supercharging, returned by the joint of turning back (8), through sucking the flow inlet of runner b entering first order oil-water cyclone separator (13), the rich oil liquid after the separation gets into the oil jacket annular space through overflow runner c and gives rise to ground again.The isolated water that contains micro oil gets into second level oil-water cyclone separator (16) through runner e; Rich oil liquid after the separation gets into the tubing and casing annular space through overflow runner f and gives rise to ground, isolated water then through interpolation pipe (17), sliding sleeve switch (21), one way valve (23), suppress ball seat (24), screen casing (25) is injected into the water filling layer.Top three cross-channel bodies (12), middle part three cross-channel bodies (15) have guaranteed separation, lifting, inject each process is independent of each other simultaneously.So far, underground oil-water separates and the completion of same-well injection water process.
This utility model compared with prior art has the following advantages:
1, carries out water-oil separating in the down-hole, significantly reduced the lifting and the disposal cost of output water, practiced thrift cost of production;
2, surface drive single screw pump is used for underground oil-water and separates, simplified the complexity of down-hole unit greatly, reduced the one-time investment cost of equipment;
3, with electric immersible pump well under water-oil separating compare, do not had the parts of rapid wears such as cable, protector, motor, easy fault in the unit of down-hole, the probability that breaks down significantly reduces, the enhancing of set steady property.
Claims (2)
1. a surface drive single screw pump underground oil-water separates the same well production-injection device, sets process pipe string by wellhead assembly, dual channel single-screw (single screw) pump device, oil-water cyclone separator and down-hole after improving and forms; Dual channel single-screw (single screw) pump device comprises single-screw (single screw) pump (10), outer shell (9), the joint of turning back (8) and pump coupling head (11); The oil-water cyclone separator comprises top three cross-channel bodies (12), middle part three cross-channel bodies (15), first order oil-water cyclone separator (13), second level oil-water cyclone separator (16) and external shell (14); The down-hole set process pipe string by interpolation pipe (17), outer tube (18), back-off sub (19), Y441 packer (20), sliding sleeve switch (21), Y341 packer (22), one way valve (23), suppress ball seat (24), screen casing (25) and plug (26) and form; It is characterized in that dual channel single-screw (single screw) pump device, oil-water cyclone separator and down-hole set process pipe string and be cascaded; Wellhead assembly after the improvement is that well head four-way (5) is communicated with petroleum pipeline; Close the discharge gate of well head threeway (4), the oil jacket annular space is as the lifting runner that separates back rich oil liquid.
2. surface drive single screw pump underground oil-water according to claim 1 separates the same well production-injection device, it is characterized in that described dual channel single-screw (single screw) pump device has the outside runner that is made up of outer shell (9) and single-screw (single screw) pump (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200189496U CN202165055U (en) | 2011-01-17 | 2011-01-17 | Same-well underground oil-water separating extraction and injection device with surface driving single-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200189496U CN202165055U (en) | 2011-01-17 | 2011-01-17 | Same-well underground oil-water separating extraction and injection device with surface driving single-screw pump |
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| CN202165055U true CN202165055U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200189496U Expired - Fee Related CN202165055U (en) | 2011-01-17 | 2011-01-17 | Same-well underground oil-water separating extraction and injection device with surface driving single-screw pump |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784728A (en) * | 2012-08-16 | 2012-11-21 | 中国石油天然气股份有限公司 | Underground two-stage cyclone separator |
| CN102996103A (en) * | 2012-12-12 | 2013-03-27 | 中国石油大学(华东) | Co-well extracting-pouring device adopting downhole oil-water separation for large-dimension sleeve of offshore oil well |
| CN103055549A (en) * | 2013-01-23 | 2013-04-24 | 中国石油大学(华东) | Bottom-drawing-in-type underground multistage oil-water separating device |
| CN103742124A (en) * | 2013-12-28 | 2014-04-23 | 中国石油天然气股份有限公司 | Method for re-separating produced liquid of underground oil-water separation co-well injection and production well |
| CN106640032A (en) * | 2017-03-13 | 2017-05-10 | 中国石油大学(华东) | Underground oil-water separation device of ground driving screw rod pump applicable to single packer pipe column |
| CN106837291A (en) * | 2017-02-17 | 2017-06-13 | 中国石油大学(华东) | Oil jacket annular space gas-liquid separation device in non-conventional gas well head |
| CN106884641A (en) * | 2017-03-13 | 2017-06-23 | 中国石油大学(华东) | A kind of screw-pump downhole oil-water separation device of the double runner layout of single suction |
| CN107060724A (en) * | 2017-03-13 | 2017-08-18 | 中国石油大学(华东) | Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well |
| CN107473329A (en) * | 2017-10-12 | 2017-12-15 | 大庆油田有限责任公司 | Underground three swirler separator |
| CN108533219A (en) * | 2017-03-01 | 2018-09-14 | 中国石油化工股份有限公司 | Executive device |
| CN111065792A (en) * | 2017-07-27 | 2020-04-24 | 沙特阿拉伯石油公司 | System, device and method for downhole water separation |
-
2011
- 2011-01-17 CN CN2011200189496U patent/CN202165055U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102784728A (en) * | 2012-08-16 | 2012-11-21 | 中国石油天然气股份有限公司 | Underground two-stage cyclone separator |
| CN102996103A (en) * | 2012-12-12 | 2013-03-27 | 中国石油大学(华东) | Co-well extracting-pouring device adopting downhole oil-water separation for large-dimension sleeve of offshore oil well |
| CN103055549A (en) * | 2013-01-23 | 2013-04-24 | 中国石油大学(华东) | Bottom-drawing-in-type underground multistage oil-water separating device |
| CN103055549B (en) * | 2013-01-23 | 2016-08-17 | 中国石油大学(华东) | Introduction-type down-hole multilevel oily-water seperating equipment bottom one |
| CN103742124A (en) * | 2013-12-28 | 2014-04-23 | 中国石油天然气股份有限公司 | Method for re-separating produced liquid of underground oil-water separation co-well injection and production well |
| CN106837291A (en) * | 2017-02-17 | 2017-06-13 | 中国石油大学(华东) | Oil jacket annular space gas-liquid separation device in non-conventional gas well head |
| CN108533219A (en) * | 2017-03-01 | 2018-09-14 | 中国石油化工股份有限公司 | Executive device |
| CN106640032A (en) * | 2017-03-13 | 2017-05-10 | 中国石油大学(华东) | Underground oil-water separation device of ground driving screw rod pump applicable to single packer pipe column |
| CN106884641A (en) * | 2017-03-13 | 2017-06-23 | 中国石油大学(华东) | A kind of screw-pump downhole oil-water separation device of the double runner layout of single suction |
| CN107060724A (en) * | 2017-03-13 | 2017-08-18 | 中国石油大学(华东) | Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well |
| CN106884641B (en) * | 2017-03-13 | 2019-04-09 | 中国石油大学(华东) | A kind of screw-pump downhole oil-water separation device of the double runner layout of single suction |
| CN111065792A (en) * | 2017-07-27 | 2020-04-24 | 沙特阿拉伯石油公司 | System, device and method for downhole water separation |
| CN107473329A (en) * | 2017-10-12 | 2017-12-15 | 大庆油田有限责任公司 | Underground three swirler separator |
| CN107473329B (en) * | 2017-10-12 | 2020-08-14 | 大庆油田有限责任公司 | Underground three-stage cyclone separation device |
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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 |
Granted publication date: 20120314 Termination date: 20150117 |
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| EXPY | Termination of patent right or utility model |