CN103821494A - Large-flow offshore downhole oil-water separator provided with lifting tubing - Google Patents
Large-flow offshore downhole oil-water separator provided with lifting tubing Download PDFInfo
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- CN103821494A CN103821494A CN201410096073.5A CN201410096073A CN103821494A CN 103821494 A CN103821494 A CN 103821494A CN 201410096073 A CN201410096073 A CN 201410096073A CN 103821494 A CN103821494 A CN 103821494A
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Abstract
The invention relates to the technical field of offshore oil exploration and discloses a large-flow offshore downhole oil-water separator provided with lifting tubing. The large-flow offshore downhole oil-water separator provided with the lifting tubing is especially applicable to downhole oil-water separation and single well integral injection/production of a large-flow oil well with a large offshore casing pipe dimension (seven inches and above). The technical problems to be solved include the spatial arrangement modes of an electric pump unit, a multi-stage cyclone separator, a lifting tubular column, an overflow oil pipeline and a water injection tubular column and pipeline, the connecting modes between all the parts, and the design of an internal flow channel structure. The large-flow offshore downhole oil-water separator solves the problems that the water content of produced liquid is high, oil production cost is high, the scale of production is limited, production efficiency is low, and the environment is polluted. The large-flow offshore downhole oil-water separator has the advantages that as the electric pump unit is arranged on a two-stage cyclone, top production and bottom injection are achieved; due to the arrangement of the overflow oil pipeline, the cyclone with a larger outer diameter can be matched, and the treatment power of the large-flow offshore downhole oil-water separator is greatly strengthened. Besides, the large-flow offshore downhole oil-water separator is reasonable in structural arrangement, stable in structure, high in operation reliability and high in separation efficiency.
Description
Technical field
Patent of the present invention relates to marine oil field production technique field, is specially adapted to the downhole oil-water separation same well production-injection of the large flow oil well of marine large casing size (7 cun and more than), is that one is furnished with lifting oil pipe formula marine with large flow downhole separation system device.
Background technology
Shaft bottom oil-water cyclone isolation technics is a brand-new technology, is development trend from now on, and the report of exploitation, field experiment is less at home.From development, the research work of domestic liquid-liquid cyclone for separating can proceed to down-hole very soon by ground.The basic principle of this technology is: in a bite high water-cut well, cyclone is installed in down-hole, and double fluid pump combination, realize Produced Liquid and separate fast in shaft bottom, make the water after separating be recycled into target zone, oil pump is arrived to ground.
Along with the exploitation of offshore oilfield, the height of Produced Liquid displays gradually containing water problems, and the high water problems that contains has improved cost for oil production, has limited production scale, has reduced production efficiency, and environment has been caused to many negative effects.Downhole oil-water separation technology can effectively must address these problems, this technology can realize in wellbore casing carries out water-oil separating to Produced Liquid, isolated purifying waste water is recycled into the non-producing horizon of same well, only isolated enriched oil being lifted to ground, is an environmental protection, energy-conservation advantage technology.The exploitation of offshore oilfield mostly is large flow oil well (flow Q=1000m
3/ d), need to configure the electric pump unit that external diameter is larger, but how down-hole oil well limited space improves separator, disposal ability, becomes the current marine key with large flow oil water separator.The present invention is intended to address the above problem, and proposes one and be applicable to the large flow downhole oil-water separation device of sea or land large scale sleeve pipe (7 cun and more than), apparatus structure connection and reasonable arrangement, and operational reliability is high, multiple-stage separator series connection, separative efficiency is high.
Summary of the invention
The technical problem to be solved in the present invention is: the space arrangement of electric pump unit, multistage cyclonic fluid separator, lifting tubing string, overflow oil pipeline, water injection string pipeline, the design of the connected mode between each several part and inner flow passage structure.
It is marine with large flow downhole separation system device, by oil pipeline that one is furnished with lifting oil pipe formula, producing zone, overflow lift tube, tee junction, underflow stream lift tube, filling pipe joint, packer, oil pipeline joint, electric pump unit, unit joint, upper intersection runner, first order cyclone assembly, second level cyclone assembly, one way valve, water filling layer, overflow oil connection, middle oil overflow union, underflow stream oil connection, middle intersection runner, filling pipe, described oil pipeline is threaded connection and is plugged in oil pipeline joint, oil pipeline joint lower end is connected by flange with electric pump unit, electric pump unit is connected by flange with unit joint, unit joint is plugged in the runner screwed hole of intersection, termination first order cyclone assembly under the runner of upper intersection, under first order cyclone assembly, connect middle intersection runner, under the runner of middle intersection, connect second level cyclone assembly, under the cyclone assembly of the second level, connect filling pipe joint, filling pipe upper end is plugged in filling pipe joint, and centre is threaded connection, in filling pipe, be provided with one way valve, prevent the refluence of water filling layer water.
Above-mentioned producing zone is positioned at the place of oil pipeline and oil pipeline joint handing-over, and water filling layer is below filling pipe joint, and packer is separated producing zone and water filling layer.
Above-mentioned overflow oil pipeline assembly is by overflow oil connection, overflow lift tube, tee junction, middle oil overflow union, underflow stream lift tube, underflow stream oil connection, described oil overflow union right-hand member is threaded connection and is plugged in oil pipeline joint, left end is threaded connection with overflow lift tube upper end and is connected, overflow lift tube lower end is threaded connection with tee junction upper end and is connected, tee junction left end is threaded connection with middle oil overflow union left end and is connected, middle oil overflow union right-hand member is threaded connection and is plugged in the hole of establishing on the runner left side, intersection, tee junction lower end is threaded connection with underflow stream lift tube upper end and is connected, underflow stream lift tube lower end is threaded connection with underflow stream oil connection left end and is connected, underflow stream oil connection) right-hand member is threaded connection and is plugged in the hole of establishing in the middle of middle intersection runner.
On above-mentioned oil pipeline joint, have a runner and b runner, described upper intersection runner is provided with c runner, d runner and e runner, and middle intersection runner is provided with f runner, g runner and h runner.
Tool of the present invention has the following advantages: electric pump unit be placed on twin-stage cyclone and with package unit coaxial line, can reduce the vibrations that unit produces when eccentric, protection unit, improves security performance and operational reliability; The configuration of overflow oil pipeline assembly, can configure the cyclone that external diameter is larger, the enhancing greatly of device disposal ability; Install the reasonable Arrangement of each structure, realized adopting pouring down, Stability Analysis of Structures, separative efficiency is high.
Accompanying drawing explanation
Fig. 1: the general structure schematic diagram of apparatus of the present invention;
Fig. 2: the general structure sectional view of apparatus of the present invention;
Fig. 3: A-A sectional view in Fig. 2;
Fig. 4: B-B sectional view in Fig. 2;
Fig. 5: C-C sectional view in Fig. 2;
Fig. 6: D-D sectional view in Fig. 2;
Fig. 7: E-E sectional view in Fig. 2.
Symbol description
1. oil pipeline, 2. producing zone, 3. overflow lift tube, 4. tee junction, 5. underflow stream lift tube, 6. filling pipe joint, 7. packer, 8. oil pipeline joint, 9. electric pump unit, 10. unit joint, intersection runner on 11., 12. first order cyclone assemblies, 13. second level cyclone assemblies, 14. one way valves, 15. water filling layers, 16. overflow oil connections, oil overflow union in 17., 18. underflow stream oil connections, intersection runner in 19., 20. filling pipes; A is flow channel for liquids to h.
The specific embodiment
Below in conjunction with accompanying drawing and example, the invention will be further described:
As shown in Fig. 1-7, it is marine with large flow downhole separation system device, by oil pipeline (1) that one is furnished with lifting oil pipe formula, producing zone (2), overflow lift tube (3), tee junction (4), underflow stream lift tube (5), filling pipe joint (6), packer (7), oil pipeline joint (8), electric pump unit (9), unit joint (10), upper intersection runner (11), first order cyclone assembly (12), second level cyclone assembly (13), one way valve (14), water filling layer (15), overflow oil connection (16), middle oil overflow union (17), underflow stream oil connection (18), middle intersection runner (19), filling pipe (20), described oil pipeline (1) is threaded connection and is plugged in oil pipeline joint (8), oil pipeline joint (8) lower end is connected by flange with electric pump unit (9), electric pump unit (9) is connected by flange with unit joint (10), unit joint (10) is plugged in intersection runner (11) screwed hole, the lower termination first order cyclone assembly (12) of upper intersection runner (11), under first order cyclone assembly (12), connect middle intersection runner (19), under middle intersection runner (19), connect second level cyclone assembly (13), under second level cyclone assembly (13), connect filling pipe joint (6), filling pipe (20) upper end is plugged in filling pipe joint (6), centre is threaded connection, in filling pipe (20), be provided with one way valve (14), prevent the refluence of water filling layer (15) water.
Preferred producing zone (2) is positioned at the place of oil pipeline (1) and oil pipeline joint (8) handing-over, and water filling layer (15) is in filling pipe joint (6) below, and packer (7) is separated producing zone (2) and water filling layer (15).
Preferred overflow oil pipeline assembly is by overflow oil connection (16), overflow lift tube (3), tee junction (4), middle oil overflow union (17), underflow stream lift tube (5), underflow stream oil connection (18), described oil overflow union (16) right-hand member is threaded connection and is plugged in oil pipeline joint (8), left end is threaded connection with overflow lift tube (3) upper end and is connected, overflow lift tube (3) lower end is threaded connection with tee junction (4) upper end and is connected, tee junction (4) left end is threaded connection with middle oil overflow union (17) left end and is connected, middle oil overflow union (17) right-hand member is threaded connection and is plugged in the hole of establishing on intersection runner (11) left side, tee junction (4) lower end is threaded connection with underflow stream lift tube (5) upper end and is connected, underflow stream lift tube (5) lower end is threaded connection with underflow stream oil connection (18) left end and is connected, underflow stream oil connection (18) right-hand member is threaded connection and is plugged in the hole of establishing in the middle of middle intersection runner (19).
On preferred oil pipeline joint (8), have a runner and b runner, described upper intersection runner (11) is provided with c runner, d runner and e runner, and middle intersection runner (19) is provided with f runner, g runner and h runner.
As shown in Fig. 1-7, workflow is, filled arrows is oil water mixture and the flow direction that separates water outlet, modest arrow is to separate fuel-displaced flow direction, the course of work is that mixture of oil, water and gas from producing zone (2) is after electric pump unit (9) supercharging, pass through successively unit joint (10), the e runner of upper intersection runner (11), enter first order cyclone assembly (12) water-oil separating, isolated gently mutually oil pass through successively d runner, c runner, middle oil overflow union (17), overflow lift tube (3), a runner, be lifted to ground by oil pipeline (1), oil water mixture after separation enters h runner, enter second level cyclone assembly (13) water-oil separating, the second level separate after gently mutually oil pass through successively f runner, g runner, after underflow stream lift tube (5), with the first order isolated gently mutually oil after converging, be lifted to ground, the isolated heavy phase water in the second level is injected into water filling layer (15) through filling pipe (20), complete the separation of oil water mixture.
Claims (4)
1. is furnished with lifting oil pipe formula marine with a large flow downhole separation system device, by oil pipeline (1), producing zone (2), overflow lift tube (3), tee junction (4), underflow stream lift tube (5), filling pipe joint (6), packer (7), oil pipeline joint (8), electric pump unit (9), unit joint (10), upper intersection runner (11), first order cyclone assembly (12), second level cyclone assembly (13), one way valve (14), water filling layer (15), overflow oil connection (16), middle oil overflow union (17), underflow stream oil connection (18), middle intersection runner (19), filling pipe (20), described oil pipeline (1) is threaded connection and is plugged in oil pipeline joint (8), oil pipeline joint (8) lower end is connected by flange with electric pump unit (9), electric pump unit (9) is connected by flange with unit joint (10), unit joint (10) is plugged in intersection runner (11) screwed hole, the lower termination first order cyclone assembly (12) of upper intersection runner (11), under first order cyclone assembly (12), connect middle intersection runner (19), under middle intersection runner (19), connect second level cyclone assembly (13), under second level cyclone assembly (13), connect filling pipe joint (6), filling pipe (20) upper end is plugged in filling pipe joint (6), centre is threaded connection, in filling pipe (20), be provided with one way valve (14), prevent the refluence of water filling layer (15) water.
It is 2. according to claim 1 that to be furnished with lifting oil pipe formula marine with large flow downhole separation system device, it is characterized in that producing zone (2) is positioned at the place of oil pipeline (1) and oil pipeline joint (8) handing-over, water filling layer (15) is in filling pipe joint (6) below, and packer (7) is separated producing zone (2) and water filling layer (15).
It is 3. according to claim 1 that to be furnished with lifting oil pipe formula marine with large flow downhole separation system device, it is characterized in that overflow oil pipeline assembly is by overflow oil connection (16), overflow lift tube (3), tee junction (4), middle oil overflow union (17), underflow stream lift tube (5), underflow stream oil connection (18), described oil overflow union (16) right-hand member is threaded connection and is plugged in oil pipeline joint (8), left end is threaded connection with overflow lift tube (3) upper end and is connected, overflow lift tube (3) lower end is threaded connection with tee junction (4) upper end and is connected, tee junction (4) left end is threaded connection with middle oil overflow union (17) left end and is connected, middle oil overflow union (17) right-hand member is threaded connection and is plugged in the hole of establishing on intersection runner (11) left side, tee junction (4) lower end is threaded connection with underflow stream lift tube (5) upper end and is connected, underflow stream lift tube (5) lower end is threaded connection with underflow stream oil connection (18) left end and is connected, underflow stream oil connection (18) right-hand member is threaded connection and is plugged in the hole of establishing in the middle of middle intersection runner (19).
It is 4. according to claim 1 that to be furnished with lifting oil pipe formula marine with large flow downhole separation system device, it is characterized in that having on described oil pipeline joint (8) a runner and b runner, described upper intersection runner (11) is provided with c runner, d runner and e runner, and middle intersection runner (19) is provided with f runner, g runner and h runner.
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| CN201410096073.5A CN103821494A (en) | 2014-03-15 | 2014-03-15 | Large-flow offshore downhole oil-water separator provided with lifting tubing |
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| CN201410096073.5A CN103821494A (en) | 2014-03-15 | 2014-03-15 | Large-flow offshore downhole oil-water separator provided with lifting tubing |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989369A (en) * | 2015-06-10 | 2015-10-21 | 中国海洋石油总公司 | High-flow-rate underground oil-water separation and annular space testing and regulating system |
| 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 |
| CN109538178A (en) * | 2019-01-15 | 2019-03-29 | 西南石油大学 | Spontaneous CO in a kind of layer2Inflating medium system preferred embodiment |
| CN109915082A (en) * | 2019-03-12 | 2019-06-21 | 东北石油大学 | A kind of device and method for exploiting Offshore Heavy Oil Field oil reservoir |
| CN110407347A (en) * | 2019-08-03 | 2019-11-05 | 中国石油大学(华东) | A kind of oil water separator |
| CN110984952A (en) * | 2019-10-18 | 2020-04-10 | 中国船舶重工集团公司第七一九研究所 | Underground oil-water separator |
| CN111206913A (en) * | 2020-03-13 | 2020-05-29 | 中国科学院力学研究所 | Underground double-vortex type rotational flow oil-water separator |
| CN111946299A (en) * | 2020-08-27 | 2020-11-17 | 中国石油天然气股份有限公司 | Same-well same-layer self-injection-production underground fluid separation self-driving well and production method |
| CN111946300A (en) * | 2020-08-27 | 2020-11-17 | 中国石油天然气股份有限公司 | Same-well same-layer multi-lateral self-injection-production downhole fluid separation self-driving well and production method |
| CN111963119A (en) * | 2020-08-27 | 2020-11-20 | 中国石油天然气股份有限公司 | Same-well multi-layer self-injection-production underground fluid separation self-driving well and production method |
| CN111963120A (en) * | 2020-08-27 | 2020-11-20 | 中国石油天然气股份有限公司 | Same-well same-layer self-injection-production underground fluid separation self-driving well and production method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2308995A (en) * | 1996-01-12 | 1997-07-16 | Vortoil Separation Systems Ltd | Downhole separation apparatus |
| EP0830494B1 (en) * | 1995-06-07 | 2000-03-29 | Centre For Engineering Research Inc. | Method for downhole cyclone separation |
| WO2001065065A1 (en) * | 2000-03-03 | 2001-09-07 | Pancanadian Petroleum Limited | Downhole separation of produced water in hydrocarbon wells, and simultaneous downhole injection of separated water and surface water |
| EP1266122A1 (en) * | 2000-03-03 | 2002-12-18 | EnCana Corporation | Downhole separation and injection of produced water |
| 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 |
| CN203239315U (en) * | 2013-05-17 | 2013-10-16 | 韩凯 | Downhole oil-water separation device |
| CN103362490A (en) * | 2012-04-01 | 2013-10-23 | 北京化工大学 | Production-injection device for downhole oil-water separation |
| CN203702122U (en) * | 2014-03-12 | 2014-07-09 | 中国石油大学(华东) | Large-flow underground oil-water separator used at sea and equipped with lifting oil tubes |
-
2014
- 2014-03-15 CN CN201410096073.5A patent/CN103821494A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0830494B1 (en) * | 1995-06-07 | 2000-03-29 | Centre For Engineering Research Inc. | Method for downhole cyclone separation |
| GB2308995A (en) * | 1996-01-12 | 1997-07-16 | Vortoil Separation Systems Ltd | Downhole separation apparatus |
| WO2001065065A1 (en) * | 2000-03-03 | 2001-09-07 | Pancanadian Petroleum Limited | Downhole separation of produced water in hydrocarbon wells, and simultaneous downhole injection of separated water and surface water |
| EP1266122A1 (en) * | 2000-03-03 | 2002-12-18 | EnCana Corporation | Downhole separation and injection of produced water |
| EP1266122B1 (en) * | 2000-03-03 | 2006-05-31 | EnCana Corporation | Downhole separation and injection of produced water |
| CN103362490A (en) * | 2012-04-01 | 2013-10-23 | 北京化工大学 | Production-injection device for downhole oil-water separation |
| 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 |
| CN203239315U (en) * | 2013-05-17 | 2013-10-16 | 韩凯 | Downhole oil-water separation device |
| CN203702122U (en) * | 2014-03-12 | 2014-07-09 | 中国石油大学(华东) | Large-flow underground oil-water separator used at sea and equipped with lifting oil tubes |
Non-Patent Citations (1)
| Title |
|---|
| 姜建平等: "《海上油田井下油水分离系统的优化设计》", 《长春理工大学学报（自然科学版）》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989369A (en) * | 2015-06-10 | 2015-10-21 | 中国海洋石油总公司 | High-flow-rate underground oil-water separation and annular space testing and regulating system |
| CN104989369B (en) * | 2015-06-10 | 2017-09-12 | 中国海洋石油总公司 | A kind of huge discharge downhole oil-water separation annular space measuring and adjusting system |
| 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 |
| CN109538178A (en) * | 2019-01-15 | 2019-03-29 | 西南石油大学 | Spontaneous CO in a kind of layer2Inflating medium system preferred embodiment |
| CN109915082A (en) * | 2019-03-12 | 2019-06-21 | 东北石油大学 | A kind of device and method for exploiting Offshore Heavy Oil Field oil reservoir |
| CN110407347A (en) * | 2019-08-03 | 2019-11-05 | 中国石油大学(华东) | A kind of oil water separator |
| CN110984952A (en) * | 2019-10-18 | 2020-04-10 | 中国船舶重工集团公司第七一九研究所 | Underground oil-water separator |
| CN111206913A (en) * | 2020-03-13 | 2020-05-29 | 中国科学院力学研究所 | Underground double-vortex type rotational flow oil-water separator |
| CN111946299A (en) * | 2020-08-27 | 2020-11-17 | 中国石油天然气股份有限公司 | Same-well same-layer self-injection-production underground fluid separation self-driving well and production method |
| CN111946300A (en) * | 2020-08-27 | 2020-11-17 | 中国石油天然气股份有限公司 | Same-well same-layer multi-lateral self-injection-production downhole fluid separation self-driving well and production method |
| CN111963119A (en) * | 2020-08-27 | 2020-11-20 | 中国石油天然气股份有限公司 | Same-well multi-layer self-injection-production underground fluid separation self-driving well and production method |
| CN111963120A (en) * | 2020-08-27 | 2020-11-20 | 中国石油天然气股份有限公司 | Same-well same-layer self-injection-production underground fluid separation self-driving well and production method |
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Application publication date: 20140528 |