CN103835694A - Marine large-flow downhole oil-water separator with parallel type whirlcones - Google Patents
Marine large-flow downhole oil-water separator with parallel type whirlcones Download PDFInfo
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- CN103835694A CN103835694A CN201410118777.8A CN201410118777A CN103835694A CN 103835694 A CN103835694 A CN 103835694A CN 201410118777 A CN201410118777 A CN 201410118777A CN 103835694 A CN103835694 A CN 103835694A
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Abstract
The invention relates to downhole oil-water separation same-well exploitation and injection equipment in the technical field of marine oilfield exploitation, in particular to a marine large-flow downhole oil-water separator with parallel type whirlcones. The marine large-flow downhole oil-water separator is suitable for exploitation of marine high-flow oil wells. The whole oil-water separator is divided to three layers which are arranged in parallel. The oil-water separator has the advantages that the small-flow whirlcones are arranged in parallel, so that separation efficiency of the separator is greatly promoted; downhole finite space is combined with structural features of a single whirlcone, a tail pipe end of a first-stage whirlcone and a cylindrical end of a second-stage whirlcone are on the same plane, the tail pipe end of the first-stage whirlcone and a tail pipe end of the second-stage whirlcone are on the same plane with a cylindrical end of a third-stage whirlcone, and accordingly the number of small-flow whirlcones is increased and processing capacity of the whole separator is improved; the whole separator is formed in a sleeved mode layer by layer, so that reliability is higher, the structure is stable, safety performance is high and space is saved.
Description
Technical field
The present invention relates to the downhole oil-water separation same well production-injection equipment in marine oil field production technique field, particularly a kind of cyclone is parallel marine with large flow downhole separation system.
Background technology
Along with offshore oilfield exploitation enters high water-cut stage, add the strategy of " the wide-spaced well high yield " taked early stage, cause the contradiction between cost of production and crude output in offshore oilfield manufacturing process to be increasingly sharpened.In order to keep the oil production of offshore oilfield every day constant, only have to increase and adopt liquid measure, if these Produced Liquids are all given rise to offshore platform and process, re-injection more afterwards, has increased the burden of water processing establishment and lifting technology greatly, and energy consumption also increases greatly, simultaneously due to ocean platform limited space, more water processing establishment can not be installed, and therefore in the present circumstance, the research and development that can improve the novel technical method that device separative efficiency and disposal ability start are extremely urgent.Correlative study both at home and abroad shows, by use oily-water seperating equipment in down-hole, in increasing crude output, can also greatly reduce surface water rate.
Although downhole oil-water separation technology is the application of comparative maturity on land, traditional downhole oil-water separation system is all the downhole hydraulic cyclone of configuration single-stage or plural serial stage form, can meet to a certain extent separative efficiency requirement.But for land or the high oil well of offshore oilfield production fluid amount, the problem of single-stage or plural serial stage hydrocyclone disposal ability deficiency starts to manifest, on the one hand, for adapting to the high liquid measure of processing, must configure the downhole hydraulic cyclone of large nominal diameter; On the other hand, the separative efficiency of hydrocyclone can decline along with the increase of nominal diameter.Consider, the hydrocyclone group of single-stage or plural serial stage is also not suitable for the oil well of high yield liquid measure.
There is the downhole oil-water separation device of cyclone parallel connection in current domestic patent, but down-hole limited space, the cylindrical end of a cluster cyclone of this parallel connection all in one plane, the quantity that causes down-hole to be furnished with cyclone is very restricted, waste to a great extent space, down-hole, reduced separative efficiency and the disposal ability of system.Based on above-mentioned, a kind of cyclone is proposed parallel marine with large flow downhole separation system, it is very big takes full advantage of the confined space of down-hole, is applicable to oil well (the processing flow Q=1000m of the marine large flow of exploitation
3/ d), produce beneficial effect.
Summary of the invention
The technical problem to be solved in the present invention is:, the connected mode between the distribution of three level cyclone separator groups, configuration, the each several part of overflow lifting oil pipe and the design of inner flow passage structure, the technical scheme of employing is as follows:
A kind of cyclone is parallel marine with large flow downhole separation system, by oil transportation oil pipe, electric pump unit, intersection runner joint, intersection runner, bipyramid cyclone A, middle overflow lifting oil pipe, bipyramid cyclone B, underflow stream lifting oil pipe, bipyramid cyclone C, producing zone, water filling layer, overflow conflux disk, upper shunting disk, upper shell, upper connection housing, middle shell, lower support dish, lower house, positioning support support plate, positioning support stay tube, upper supporting disk, middle overflow conflux disk, middle shunting disk, middle supporting disk, underflow stream conflux disk, lower shunting disk, bipyramid cyclone D composition, it is characterized in that described electric pump unit is plugged in the runner of opening runner joint upper left side, intersection, oil transportation oil pipe is plugged in the runner of opening runner joint upper right side, intersection, intersection runner shell is threaded connection and is plugged in the runner of opening runner joint lower end, intersection, runner lower end, intersection is connected by flange with upper shell, and the housing of described package unit is followed successively by upper shell from top to bottom, upper connection housing, middle shell, lower house, is threaded connection between mutually, and the inner separator of described package unit comprises three layers: first floor eliminator assembly, second layer cyclone assembly, the 3rd layer of cyclone assembly, described package unit outside is provided with producing zone and water filling layer.
Above-mentioned upper shell, middle shell, lower house, these three housing inner chambers are provided with stair-stepping projection.
Above-mentioned first floor eliminator assembly comprises bipyramid cyclone A, middle overflow lifting oil pipe, overflow conflux disk, upper shunting disk, upper supporting disk, described first floor a cluster cyclone is made up of single bipyramid cyclone A, install with upper shell coaxial line, described upper shell inner chamber is followed successively by overflow conflux disk on from top to bottom, upper shunting disk, upper supporting disk, left side has annular poroid runner b, runner e, runner f, three annular channel coaxial line alignment are installed, described overflow conflux disk has the annular space runner d of two circular arcs, described bipyramid cyclone A cylindrical end is inserted in the hole of opening in the middle of supporting disk, described middle overflow lifting oil pipe is threaded connection and is inserted in the hole that shunting disk left end opens, lower end is threaded connection and is inserted in the hole that middle overflow conflux disk left end opens, in middle hole of opening through upper supporting disk left end, described overflow conflux disk upper end cylinder runner is communicated with runner lower end, intersection cylinder runner.
Above-mentioned second layer eliminator assembly comprises bipyramid cyclone B, underflow stream lifting oil pipe, middle overflow conflux disk, middle shunting disk, middle supporting disk, described second layer a cluster cyclone is composed in parallel by four bipyramid cyclone B, described middle shell inner chamber is followed successively by middle overflow conflux disk on from top to bottom, middle shunting disk, middle supporting disk, cylindrical end is inserted in the hole that middle supporting disk opens, described underflow stream lifting oil pipe upper end is threaded connection and is inserted in the hole that middle shunting disk left end opens, lower end is threaded connection and is inserted in the hole that underflow stream conflux disk left end opens, in middle hole of opening through middle supporting disk left end.
The 3rd layer of above-mentioned eliminator assembly comprises bipyramid cyclone C, lower support dish, underflow stream conflux disk, lower shunting disk, bipyramid cyclone D, described the 3rd layer of a cluster cyclone composed in parallel by four bipyramid cyclone C and four bipyramid cyclone D, cylindrical end is inserted in the hole that lower support dish opens, described lower housing cavity is followed successively by underflow stream conflux disk on from top to bottom, described lower shunting disk and all have 13 holes above lower support dish.
Above-mentioned lower housing cavity lower end is provided with positioning support support plate and positioning support stay tube, supports a whole set of interior arrangement, has 13 holes on described positioning support support plate.
Above-mentioned a whole set of a cluster cyclone is composed in parallel by bipyramid cyclone A, bipyramid cyclone B, bipyramid cyclone C, bipyramid cyclone D, the entrance of three layers of cyclone is interconnected in same annular space pipeline, and described a whole set of bipyramid a cluster cyclone tail pipe end face is on a plane.
Tool of the present invention has the following advantages: adopt the parallel connection of low discharge cyclone, promoted greatly the separative efficiency of device; It combines the design feature of the confined space of down-hole and single cyclone, the tail pipe end of first order cyclone and the cylindrical end of second level cyclone are on a plane, the cylindrical end of the tail pipe of the first order and second level cyclone and the cyclone of the third level is on a plane, so arrange, increase the quantity of low discharge cyclone, increased the disposal ability of package unit; Package unit is nested together layer by layer, and reliability is higher, Stability Analysis of Structures, security performance are high, save space.
Brief description of the drawings
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;
Fig. 8: F-F sectional view in Fig. 2;
Fig. 9: G-G sectional view in Fig. 2;
Figure 10: H-H sectional view in Fig. 2;
Figure 11: I-I sectional view in Fig. 2;
Figure 12: J-J sectional view in Fig. 2;
Figure 13: K-K sectional view in Fig. 2;
Figure 14: L-L sectional view in Fig. 2;
Figure 15: M-M sectional view in Fig. 2;
Figure 16: N-N sectional view in Fig. 2;
Figure 17: O-O sectional view in Fig. 2.
Symbol description
1. oil transportation oil pipe, 2. electric pump unit, 3. intersection runner joint, 4. intersection runner, 5. bipyramid cyclone A, 6. overflow lifting oil pipe in, 7. bipyramid cyclone B, 8. underflow stream lifting oil pipe, 9. bipyramid cyclone C, 10. producing zone, 11. water filling layers, 12. overflow conflux disks, shunting disk on 13., 14. upper shells, 15. upper connection housings, 16. middle shells, 17. lower support dishes, 18. lower houses, 19. positioning support support plates, 20. stay pipes, supporting disk on 21., overflow conflux disk in 22., shunting disk in 23., supporting disk in 24., 25. underflow stream conflux disks, 26. times shunting disks, 27. bipyramid cyclone D.
A-o is flow channel for liquids.
detailed description of the invention
Below in conjunction with accompanying drawing and example, the invention will be further described:
As shown in Fig. 1-17, a kind of cyclone is parallel marine with large flow downhole separation system, by oil transportation oil pipe 1, electric pump unit 2, intersection runner joint 3, intersection runner 4, bipyramid cyclone A5, middle overflow lifting oil pipe 6, bipyramid cyclone B7, underflow stream lifting oil pipe 8, bipyramid cyclone C9, producing zone 10, water filling layer 11, overflow conflux disk 12, upper shunting disk 13, upper shell 14, upper connection housing 15, middle shell 16, lower support dish 17, lower house 18, positioning support support plate 19, positioning support stay tube 20, upper supporting disk 21, middle overflow conflux disk 22, middle shunting disk 23, middle supporting disk 24, underflow stream conflux disk 25, lower shunting disk 26, bipyramid cyclone D27 composition, it is characterized in that described electric pump unit 1 is plugged in the runner of opening runner joint 3 upper left sides, intersection, oil transportation oil pipe 1 is plugged in the runner of opening runner joint 3 upper right sides, intersection, runner 4 shells in intersection are threaded connection and are plugged in the runner of opening runner joint 3 lower ends, intersection, runner 4 lower ends in intersection are connected by flange with upper shell 14, and the housing of described package unit is followed successively by upper shell 14 from top to bottom, upper connection housing 15, middle shell 16, lower house 18, is threaded connection between mutually, and the inner separator of described package unit comprises three layers: first floor eliminator assembly, second layer cyclone assembly, the 3rd layer of cyclone assembly, described package unit outside is provided with producing zone 10 and water filling layer 11.
Preferred upper shell 14, middle shell 16, lower house 18, these three housing inner chambers are provided with stair-stepping projection.
Preferred first floor eliminator assembly comprises bipyramid cyclone A5, middle overflow lifting oil pipe 6, overflow conflux disk 12, upper shunting disk 13, upper supporting disk 21, described first floor a cluster cyclone is made up of single bipyramid cyclone A5, install with upper shell 14 coaxial lines, described upper shell 14 inner chambers are followed successively by overflow conflux disk 12 on from top to bottom, upper shunting disk 13, upper supporting disk 21, left side has annular poroid runner b, runner e, runner f, three annular channel coaxial line alignment are installed, described overflow conflux disk 12 has the annular space runner d of two circular arcs, described bipyramid cyclone A5 cylindrical end is inserted in the hole of opening in the middle of supporting disk 21, described middle overflow lifting oil pipe 6 is threaded connection and is inserted in the hole that shunting disk 13 left ends open, lower end is threaded connection and is inserted in the hole that middle overflow conflux disk 22 left ends open, in middle hole of opening through upper supporting disk 21 left ends, described overflow conflux disk 12 upper end cylinder runners are communicated with intersection runner 4 lower end cylinder runners.
Preferred second layer eliminator assembly comprises bipyramid cyclone B7, underflow stream lifting oil pipe 8, middle overflow conflux disk 22, middle shunting disk 23, middle supporting disk 24, described second layer a cluster cyclone is composed in parallel by four bipyramid cyclone B7, described middle shell 16 inner chambers are followed successively by middle overflow conflux disk 22 on from top to bottom, middle shunting disk 23, middle supporting disk 24, cylindrical end is inserted in the hole that middle supporting disk 24 opens, described underflow stream lifting oil pipe 8 upper ends are threaded connection and are inserted in the hole that middle shunting disk 23 left ends open, lower end is threaded connection and is inserted in the hole that underflow stream conflux disk 25 left ends open, in middle hole of opening through middle supporting disk 24 left ends.
Preferred the 3rd layer of eliminator assembly comprises bipyramid cyclone C9, lower support dish 17, underflow stream conflux disk 25, lower shunting disk 26, bipyramid cyclone D27, described the 3rd layer of a cluster cyclone composed in parallel by four bipyramid cyclone C9 and four bipyramid cyclone D27, cylindrical end is inserted in the hole that lower support dish 17 opens, described lower house 18 inner chambers are followed successively by underflow stream conflux disk 25 on from top to bottom, and described lower shunting disk 26 and lower support dish 17 all have 13 holes above.
Preferred lower house 18 inner chamber lower ends are provided with positioning support support plate 19 and positioning support stay tube 20, support a whole set of interior arrangement, have 13 holes on described positioning support support plate 19.
Preferred a whole set of a cluster cyclone is composed in parallel by bipyramid cyclone A5, bipyramid cyclone B7, bipyramid cyclone C9, bipyramid cyclone D27, the entrance of three layers of cyclone is interconnected in same annular space pipeline, and described a whole set of bipyramid a cluster cyclone tail pipe end face is on a plane.
Workflow is, filled arrows is the flow direction of oil water mixture, modest arrow is to separate fuel-displaced flow direction, process fluid flow is that oil water mixture from producing zone 10 is after 2 superchargings of electric pump unit, through runner a, runner b, runner e, after runner d, be divided into two-way, the first via tangentially enters bipyramid cyclone A5 and flows and form spiral flow along cylindrical end wall eddy flow, High Rotation Speed flows downward and enters conical section, enter after conical section, because the diameter of section of cyclone diminishes gradually, the speed of mixed liquor eddy flow is accelerated gradually, it is large that produced simultaneously centrifugal force becomes too, the smaller oil of density flows to the lower axle center place of pressure, and form in axis centre the interior whirlpool upwards flowing, flowed out in annular space runner c by overfall, through the inner flow passage of intersection runner 4, given rise to ground by oil transportation oil pipe 1, the water that density is larger flows downward and is discharged to water filling layer 11 through tail pipe, the second tunnel is through runner f, middle shell 16 inner chambers, runner g, runner i, after entering annular space runner j, be also divided into two-way, one tunnel tangentially enters after four bipyramid cyclone B7 cylindrical end walls at a high speed, after separating, the larger water of density flows downward and is discharged to water filling layer 11 through tail pipe, the oil that density is less passes through cyclone overfall successively, h runner, middle overflow lifting oil pipe 6, after converging with first floor separating oil aqueous mixtures after annular space runner c, be lifted to ground, another road on the second tunnel is through runner k, runner l, runner n, after runner o, after at a high speed tangentially entering four bipyramid cyclone C9 and separating with the cylindrical end wall of four bipyramid cyclone D27, the water that density is larger is injected into water filling layer 11 through tail pipe, the oil that density is less converges at runner m from each overfall is discharged, after underflow stream lifting oil pipe 8 and the isolated oil of the second layer converge, be lifted to ground.
Claims (7)
1. cyclone is parallel marine with a large flow downhole separation system, by oil transportation oil pipe (1), electric pump unit (2), intersection runner joint (3), intersection runner (4), bipyramid cyclone A(5), middle overflow lifting oil pipe (6), bipyramid cyclone B(7), underflow stream lifting oil pipe (8), bipyramid cyclone C(9), producing zone (10), water filling layer (11), overflow conflux disk (12), upper shunting disk (13), upper shell (14), upper connection housing (15), middle shell (16), lower support dish (17), lower house (18), positioning support support plate (19), positioning support stay tube (20), upper supporting disk (21), middle overflow conflux disk (22), middle shunting disk (23), middle supporting disk (24), underflow stream conflux disk (25), lower shunting disk (26), bipyramid cyclone D(27) composition, it is characterized in that described electric pump unit (1) is plugged in the runner of opening intersection runner joint (3) upper left side, oil transportation oil pipe (1) is plugged in the runner of opening intersection runner joint (3) upper right side, intersection runner (4) shell is threaded connection and is plugged in the runner of opening intersection runner joint (3) lower end, intersection runner (4) lower end is connected by flange with upper shell (14), and the housing of described package unit is followed successively by upper shell (14) from top to bottom, upper connection housing (15), middle shell (16), lower house (18), is threaded connection between mutually, and the inner separator of described package unit comprises three layers: first floor eliminator assembly, second layer cyclone assembly, the 3rd layer of cyclone assembly, described package unit outside is provided with producing zone (10) and water filling layer (11).
2. the parallel sea of cyclone according to claim 1, with large flow downhole separation system, is characterized in that described upper shell (14), middle shell (16), lower house (18), and these three housing inner chambers are provided with stair-stepping projection.
3. cyclone according to claim 1 is parallel marine with large flow downhole separation system, it is characterized in that first floor eliminator assembly comprises bipyramid cyclone A(5), middle overflow lifting oil pipe (6), overflow conflux disk (12), upper shunting disk (13), upper supporting disk (21), described first floor a cluster cyclone is by single bipyramid cyclone A(5) form, install with upper shell (14) coaxial line, described upper shell (14) inner chamber is followed successively by overflow conflux disk (12) on from top to bottom, upper shunting disk (13), upper supporting disk (21), left side has annular poroid runner b, runner e, runner f, three annular channel coaxial line alignment are installed, described overflow conflux disk (12) has the annular space runner d of two circular arcs, described bipyramid cyclone A(5) cylindrical end is inserted in the hole of opening in the middle of supporting disk (21), described middle overflow lifting oil pipe (6) is threaded connection and is inserted in the hole that shunting disk (13) left end opens, lower end is threaded connection and is inserted in the hole that middle overflow conflux disk (22) left end opens, in middle hole of opening through upper supporting disk (21) left end, described overflow conflux disk (12) upper end cylinder runner is communicated with intersection runner (4) lower end cylinder runner.
4. cyclone according to claim 1 is parallel marine with large flow downhole separation system, it is characterized in that described second layer eliminator assembly comprises bipyramid cyclone B(7), underflow stream lifting oil pipe (8), middle overflow conflux disk (22), middle shunting disk (23), middle supporting disk (24), described second layer a cluster cyclone is by four bipyramid cyclone B(7) compose in parallel, described middle shell (16) inner chamber is followed successively by middle overflow conflux disk (22) on from top to bottom, middle shunting disk (23), middle supporting disk (24), cylindrical end is inserted in the hole that middle supporting disk (24) opens, described underflow stream lifting oil pipe (8) upper end is threaded connection and is inserted in the hole that middle shunting disk (23) left end opens, lower end is threaded connection and is inserted in the hole that underflow stream conflux disk (25) left end opens, in middle hole of opening through middle supporting disk (24) left end.
5. cyclone according to claim 1 is parallel marine with large flow downhole separation system, it is characterized in that described the 3rd layer of eliminator assembly comprises bipyramid cyclone C(9), lower support dish (17), underflow stream conflux disk (25), lower shunting disk (26), bipyramid cyclone D(27), described the 3rd layer of a cluster cyclone is by four bipyramid cyclone C(9) and four bipyramid cyclone D(27) compose in parallel, cylindrical end is inserted in the hole that lower support dish (17) opens, described lower house (18) inner chamber is followed successively by underflow stream conflux disk (25) on from top to bottom, described lower shunting disk (26) and lower support dish (17) all have 13 holes above.
6. cyclone according to claim 1 is parallel marine with large flow downhole separation system, it is characterized in that described lower house (18) inner chamber lower end is provided with positioning support support plate (19) and positioning support stay tube (20), support a whole set of interior arrangement, on described positioning support support plate (19), have 13 holes.
7. cyclone according to claim 1 is parallel marine with large flow downhole separation system, it is characterized in that a whole set of a cluster cyclone is by bipyramid cyclone A(5), bipyramid cyclone B(7), bipyramid cyclone C(9), bipyramid cyclone D(27) compose in parallel, the entrance of three layers of cyclone is interconnected in same annular space pipeline, and described a whole set of bipyramid a cluster cyclone tail pipe end face is on a plane.
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| CN201410118777.8A CN103835694B (en) | 2014-03-27 | 2014-03-27 | Marine large-flow downhole oil-water separator with parallel type whirlcones |
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| CN201410118777.8A CN103835694B (en) | 2014-03-27 | 2014-03-27 | Marine large-flow downhole oil-water separator with parallel type whirlcones |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575206A (en) * | 2017-10-17 | 2018-01-12 | 西南石油大学 | A kind of modularization sea bed gas hydrate underground separator |
| CN107762479A (en) * | 2017-10-17 | 2018-03-06 | 西南石油大学 | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device |
| CN108868737A (en) * | 2018-07-23 | 2018-11-23 | 中国石油大学(华东) | A kind of underwater crude oil desanding device |
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| US5456837A (en) * | 1994-04-13 | 1995-10-10 | Centre For Frontier Engineering Research Institute | Multiple cyclone apparatus for downhole cyclone oil/water separation |
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| 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 |
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| CN203742579U (en) * | 2014-03-15 | 2014-07-30 | 中国石油大学(华东) | Marine high-flow underground oil-water separator adopting parallel-connection hydrocyclones |
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2014
- 2014-03-27 CN CN201410118777.8A patent/CN103835694B/en not_active Expired - Fee Related
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| US5456837A (en) * | 1994-04-13 | 1995-10-10 | Centre For Frontier Engineering Research Institute | Multiple cyclone apparatus for downhole cyclone oil/water separation |
| CN2405660Y (en) * | 1999-12-24 | 2000-11-15 | 胜利石油管理局工程机械总厂 | Hydraulic swirling-flow separator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575206A (en) * | 2017-10-17 | 2018-01-12 | 西南石油大学 | A kind of modularization sea bed gas hydrate underground separator |
| CN107762479A (en) * | 2017-10-17 | 2018-03-06 | 西南石油大学 | A kind of tandem sea-bottom shallow gas hydrates in-situ separating device |
| CN108868737A (en) * | 2018-07-23 | 2018-11-23 | 中国石油大学(华东) | A kind of underwater crude oil desanding device |
| CN108868737B (en) * | 2018-07-23 | 2020-06-02 | 中国石油大学(华东) | Underwater crude oil desanding device |
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