CN113617543B - Underground dynamic cyclone separation system of screw pump - Google Patents
Underground dynamic cyclone separation system of screw pump Download PDFInfo
- Publication number
- CN113617543B CN113617543B CN202110896114.9A CN202110896114A CN113617543B CN 113617543 B CN113617543 B CN 113617543B CN 202110896114 A CN202110896114 A CN 202110896114A CN 113617543 B CN113617543 B CN 113617543B
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- cyclone
- pipe
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- cavity
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- 238000000926 separation method Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 5
- 235000019198 oils Nutrition 0.000 description 46
- 238000005516 engineering process Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 235000019476 oil-water mixture Nutrition 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004581 coalescence Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
- B04C5/04—Tangential inlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cyclones (AREA)
Abstract
A screw pump downhole dynamic cyclone separation system. The device comprises an outer sleeve, a stator, a screw shaft rotor, a cyclone overflow pipe, a cyclone cavity, a cyclone bottom flow pipe, an inner cone and an overflow oil transportation branch pipe; the screw shaft rotor, the overflow oil delivery branch pipe, the cyclone overflow pipe, the inner cone, the cyclone cavity, the outer cone section and the bottom flow pipe are sequentially and fixedly connected on the same central axis to form an integral rotary structural member, and the integral rotary structural member is integrally rotated under the drive of the screw; the rectangular tangential inlet of the cyclone is opposite to the spiral direction; the stator is connected with the overflow oil transportation branch pipe and the screw rod in a matching way at the upper part of the overflow pipe of the cyclone, and an oil collecting cavity and a spiral oil transportation gap are respectively formed; the outer sleeve is in transitional connection with the cyclone overflow pipe through a first bearing, and the first bearing is adjacent to the stator above and welded on the inner side of the outer sleeve; the outer sleeve is in transitional connection with the cyclone underflow pipe through a second bearing and a second bearing filling ring which are positioned at the joint of the cyclone cone section and the cyclone underflow pipe. The separation system has the advantages of high separation efficiency, low cost, small radial size and convenient operation.
Description
Technical Field
The invention relates to a two-phase separation treatment device applied to the fields of petroleum, chemical industry, environmental protection and the like.
Background
At present, most of the treatment methods are used in the technology of treating produced liquid water in an oil production well site, and the produced liquid is subjected to separation treatment such as sedimentation and rotational flow after being pumped to the ground, and in an oil field, the cost is too high due to the adoption of the treatment method in a large range. At present, the same-well injection and production underground oil-water separation and reinjection technology is mature day by day, and the technology can directly treat the high-water-content produced liquid underground, avoid a large amount of invalid water to be transported to the ground, realize reinjection recycling in a shaft, greatly reduce lifting energy consumption and operation cost, reduce the economic and effective exploitation lower limit of the high-water-content oil field, prolong the production life of the oil well and provide a new technology for the economic exploitation of the high-water-content oil field.
The downhole cyclone separation system is a system in the same-well injection and production process, and is generally designed to be applied to the downhole by a downhole static cyclone to perform separation treatment in a produced fluid shaft. The problems in the prior art are: the static hydrocyclone is limited in further improving the separation efficiency due to the structural characteristics and the working mode of the static hydrocyclone, and particularly when the separation operation of treating high-viscosity media (such as thickened oil) is performed, the viscosity of the working media is high, the internal friction resistance is high, the pressure loss is increased, and the special production requirements of an oilfield site are difficult to meet. In practice, some dynamic cyclones are also used, and most of the dynamic cyclones are driven by an external motor to rotate a part of the static cyclones. However, the externally-added power equipment also has the problems of high energy consumption, easy damage to the rotating part, unreliable sealing, easy abrasion and the like.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a screw pump underground dynamic cyclone separation system, which can drive an outer barrel of a cyclone to rotate through a screw pump well rotating shaft in the underground, so that the cyclone dynamically rotates to generate a strong centrifugal force field, the cyclone is subjected to cyclone centrifugal separation on immiscible two-phase mixed liquids such as oil water and the like with different densities, the separated low-density oil phase is lifted to the ground, and the water phase can be reinjected to an underground reinjection layer for recycling. The separation system has the advantages of high separation strength, high separation efficiency, low separation cost, small radial dimension, compact structure, convenient operation and the like.
The technical scheme of the invention is as follows: the underground dynamic cyclone separation system of the screw pump comprises an outer sleeve 4, a stator 2, a cyclone overflow pipe 9, a cyclone cavity 14, a cyclone bottom flow pipe 19 and a cyclone inner cone 13, and is characterized in that:
the cyclonic separating system further comprises a screw shaft rotor 3, an overflow oil manifold 7, a first bearing 8, a second bearing 17 and a second bearing packing ring 18.
Wherein, the inner wall surface of the outer sleeve 4 is provided with wall surface array holes 10; the inner wall surface of the outer sleeve 4, the first bearing 8, the second bearing 17, the second bearing filling ring 18, the outer wall of the cyclone overflow pipe 9, the outer wall of the cyclone cavity 14, the outer cone section 16 of the cyclone and the cyclone bottom flow pipe 19 jointly form a liquid inlet cavity; the liquid inlet cavities are used for converging the oil-water mixed liquid entering from the wall array holes 10.
The cyclone cavity 14 is formed by sequentially connecting a cyclone cylindrical section 12, a cyclone inner cone 13 and a cyclone outer cone section 16, and a cyclone rectangular tangential inlet 11 is arranged on the side wall of the top of the cyclone cylindrical section 12; the inner cone 13 of the cyclone is fixed at the top axis of the cylindrical section 12 of the cyclone.
The screw shaft rotor 3, the overflow oil delivery branch pipe 7, the cyclone overflow pipe 9, the cyclone inner cone 13, the cyclone cavity 14, the outer cone section 16 and the underflow pipe 19 are sequentially and fixedly connected on the same central axis to form an integral rotary structural member, and the integral rotary structural member is driven by the screw shaft rotor 3; the rectangular tangential inlet 11 of the cyclone is opposite to the spiral direction and is used for ensuring that the rotation direction of fluid entering the cyclone cavity 14 is consistent with the rotation direction of the screw shaft rotor 3, so as to form a cyclone centrifugal separation flow field.
The stator 2 is matched with the overflow oil delivery branch pipe 7 and the screw shaft rotor 3 at the upper part of the cyclone overflow pipe 9 to form an oil collecting cavity 6 and a spiral oil delivery gap 5, and is used for enabling oil phase which flows into the central overflow pipe inlet 15 after centrifugal separation to flow out, and water phase which is centrifugally separated enters the cyclone underflow pipe 19 and flows into the water collecting cavity 21 through the underflow round hole outlet 20.
The outer sleeve 4 is in transitional connection with the cyclone overflow pipe 9 through a first bearing 8, and the first bearing 8 is close to the upper stator 2 and is in sealing connection with the inner side of the outer sleeve 4; the outer sleeve 4 is in sealing connection with the cyclone underflow pipe 19 by a second bearing 17 and a second bearing packing ring 18 at the junction of the cyclone outer cone section 16 and the cyclone underflow pipe 19.
The invention has the following beneficial effects: firstly, the screw shaft rotor, the overflow oil transportation branch pipe, the cyclone overflow pipe, the inner cone, the cyclone cavity, the outer cone section and the bottom flow pipe are sequentially and fixedly connected on the same central axis through the structural design to form an integral rotary structural member, and the integral rotary structural member is driven by a screw to integrally rotate, so that the dynamic separation of underground oil and water phases can be realized; secondly, the dynamic rotation power of the cyclone is derived from the rotation of the rotating shaft of the screw pump, so that the rotating speed of the underground dynamic cyclone can be directly controlled and regulated by the ground; thirdly, a structure that the rectangular tangential inlet of the cyclone is opposite to the spiral direction is designed, so that the rotation direction of fluid entering the cyclone cavity is effectively ensured to be consistent with the spiral direction of the screw, and a cyclone centrifugal separation flow field is formed; in addition, the whole structure is novel, the equipment size is small, compared with the conventional shaft, no external actuating equipment is arranged, the reliability is high, compared with the separation effect of the conventional cyclone separation equipment, the centrifugal separation strength is stronger, the separation is purer, the advantages are outstanding, and the cyclone separation equipment has considerable popularization and application prospects in the fields of oil field production and the like.
Description of the drawings:
FIG. 1 is a schematic diagram of a system for downhole dynamic cyclone separation with a screw pump according to the present invention.
FIG. 2 is a schematic illustration of the internal fluid flow and phase separation of the screw pump downhole dynamic cyclonic separating system, with arrows indicating the direction of fluid flow into the system.
FIG. 3 is a schematic cross-sectional view of the structure of A-A of FIG. 1.
FIG. 4 is a schematic cross-sectional view of the structure of section B-B of FIG. 1.
FIG. 5 is a schematic cross-sectional view of the structure of section C-C of FIG. 1.
FIG. 6 is a schematic cross-sectional view of the cross-section of FIG. 1D-D, with the dashed arrows indicating the screw pump rotation direction.
Fig. 7 is a schematic cross-sectional view of the cross-sectional structure of E-E of fig. 1.
FIG. 8 is a schematic diagram of the connection of the downhole dynamic cyclone of the screw pump and the rotor of the screw shaft integrally rotated, wherein the dotted arrows indicate the screw pump rotation direction and the solid arrows indicate the direction of fluid entering the tangential inlet.
1-spiral outlet of oil phase in the figure; 2-stator; 3-a screw shaft rotor; 4-an outer sleeve; 5-spiral oil conveying gap formed by the stator and the screw shaft rotor; 6-an oil collecting cavity; 7-overflow oil transportation branch pipes; 8-a first bearing; 9-cyclone overflow pipe; 10-perforating an oil sleeve array; 11-rectangular tangential inlet of the cyclone; 12-a cyclone cylinder section; 13-cyclone inner cone; 14-a cyclone chamber; 15-a central overflow tube inlet; 16-an outer cone section of the cyclone; 17-a second bearing; 18-a second bearing packing ring; 19-cyclone underflow pipe; 20-an underflow round hole outlet; 21-water collecting cavity.
The specific embodiment is as follows:
the invention is further described below with reference to the accompanying drawings:
the object of the invention is first described as follows: the downhole rotation working condition of the screw pump is fully utilized, the dynamic cyclone separation of the downhole oil-water two phases (taking the oil-water two phases as an example and not being limited to the oil-water two phases) is realized by the innovative design, the problems of low separation efficiency such as small oil-water density difference, small dispersed phase oil drop particles, high continuous phase viscosity and the like in the existing downhole separation technology are solved, and the efficient separation of the two phases is realized.
The underground dynamic cyclone separation system with the screw pump has an overall structure in a slender cylindrical shape and can be connected with an oil extraction shaft in an matching way. As shown in fig. 1, the structure mainly comprises: the device comprises a stator 2, a screw shaft rotor 3, an outer sleeve 4, an overflow oil delivery branch pipe 7, a first bearing 8, a cyclone overflow pipe 9, an oil sleeve array opening 10, a cyclone rectangular tangential inlet 11, a cyclone cylindrical section 12, a cyclone inner cone 13, a cyclone outer cone section 16, a second bearing 17, a second bearing filling ring 18, a cyclone underflow pipe 19 and an underflow round hole outlet 20.
Referring to fig. 2, the flow direction of fluid entering the system is shown by the arrow in the figure, the oil-water mixture to be separated in the shaft flows through the oil sleeve array opening 10, and first enters the liquid inlet cavity, which is defined by the inner wall surface of the outer sleeve 4 of the wall surface array opening 10, the first bearing 8, the second bearing 17, the second bearing filling ring 18, the outer wall of the cyclone overflow pipe 9, the outer wall of the cyclone cavity 14, the outer cone section 16 of the cyclone and the cyclone underflow pipe 19. The pressure of the oil-water mixture in the liquid inlet cavity is higher than the pressure in the cyclone, at the moment, the designed rectangular tangential inlet 11 is matched with the rotation of the cyclone to generate suction force (the centrifugal motion center area is a low-pressure area) at the rectangular tangential inlet 11 and in the cyclone, so that the oil-water mixture in the liquid inlet cavity enters the cyclone inner flow cavity 14 along the rectangular tangential inlet 11 under the dual functions of pressure driving and centrifugal motion suction force. To ensure that the flow line of the fluid entering the cyclone is consistent with the rotation direction of the cyclone, the opening direction of the rectangular tangential inlet 11 is opposite to the rotation direction of the cyclone, as shown in fig. 8, the dotted arrows in the figure indicate the rotation direction of the screw pump, and the solid arrows indicate the direction of the fluid entering the tangential inlet. The cyclone cavity 14 is formed by sequentially connecting a cyclone cylindrical section 12, a cyclone inner cone 13 and a cyclone outer cone section 16, the cyclone cavity 14 is a two-phase centrifugal separation generation area, under the diversion effect of the outer wall surface rotation and the rectangular tangential inlet 11, the oil-water mixed liquid entering the cyclone cavity 14 can perform rotary circular motion in the cyclone cavity in a high-speed jet flow mode, the oil-water phases are different in density, the centrifugal force received by the light phase oil phase is small, the light phase oil phase moves towards the central area of the cyclone along with rotation, the heavy phase water phase receives larger centrifugal force and gradually moves towards the side wall of the cyclone. The wall surface conical structure design of the cyclone inner cone 13 of the cyclone cavity component can play a role in stabilizing the flow field of the liquid inlet fluid and the coalescence and collection of the light phase moving to the side wall of the cyclone inner cone.
After the cyclone centrifugal separation process in the cyclone cavity 14, the separated light phase oil phase collected in the center sequentially enters an overflow pipe 9, an oil collecting cavity 6, an overflow oil conveying branch pipe 7 and a spiral oil conveying gap 5 formed by a stator and a screw shaft rotor, and finally flows out from an oil phase spiral outlet 1; the separated water phase enters the cyclone underflow pipe 19 along the side wall of the outer cone section 16 of the cyclone, and flows into the water collecting cavity 21 through the underflow round hole outlet 20.
In order to drain the oil phase collected and flowed into the overflow pipe 9 to the oil collecting cavity 6, a transition connecting component, namely an overflow oil conveying branch pipe 7, is designed, and is obliquely inserted into the oil collecting cavity 6 from the center of the bottom through four inclined pipe holes, so that the oil phase of the central overflow pipe 9 can be conveniently drained into the oil collecting cavity 6; the oil phase entering the oil collecting cavity 6 enters the spiral oil conveying gap 5 to be pressurized under the driving of the rotation of the screw shaft rotor so as to be conveyed to other manifolds or the ground.
In addition, the overall rotation of the outer wall of the cyclone can also promote the oil-water phase in the liquid inlet cavity 14 to follow to do circular motion, and at the moment, the light phase oil phase can move towards the outer wall of the central cyclone, so that a certain coalescence effect can be achieved, and a better separation effect is achieved compared with a static cyclone or a sedimentation separation device.
The system utilizes the mode that the rotating shaft core of the screw pump well drives the outer barrel of the cyclone to rotate, so that the cyclone dynamically rotates to generate a strong centrifugal force field, and the cyclone centrifugal separation is carried out on the immiscible two-phase mixed liquid such as oil water with different densities. The system simplifies the power structure by driving the screw to rotate, simultaneously reduces the equipment volume by utilizing the spiral cavity of the screw sleeve to transmit the oil phase, realizes the dynamic cyclone separation of the underground oil-water two phases, can improve the whole separation efficiency of the two phases, and is suitable for the working conditions of small density difference, small dispersed phase oil drop particles, high continuous phase viscosity and the like which are not mutually dissolved and are difficult to separate.
The invention provides a new thought for the design of the two-phase separation equipment, promotes the development of separation technology, and simultaneously improves the downhole cyclone separation and the same-well reinjection technology to a new level. The device can also be applied to centrifugal separation treatment of immiscible two-phase media in industries such as petroleum, chemical industry, municipal environmental protection and the like, such as sewage deoiling, sewage degassing, underground coal washing sewage liquid-solid separation and the like.
Claims (1)
1. The utility model provides a screw pump is dynamic cyclone separation system in pit, includes outer sleeve (4), stator (2), cyclone overflow pipe (9), whirl chamber (14), cyclone underflow pipe (19) and cyclone inner cone (13), its characterized in that:
the cyclone separation system further comprises a screw shaft rotor (3), an overflow oil conveying branch pipe (7), a first bearing (8), a second bearing (17) and a second bearing filling ring (18);
wherein, the inner wall surface of the outer sleeve (4) is provided with wall surface array holes (10); the inner wall surface of the outer sleeve (4), the first bearing (8), the second bearing (17), the second bearing filling ring (18), the outer wall of the cyclone overflow pipe (9), the outer wall of the cyclone cavity (14), the outer cone section (16) of the cyclone and the cyclone underflow pipe (19) form a liquid inlet cavity together; the liquid inlet cavity is used for converging the oil-water mixed liquid entering from the wall surface array holes (10);
the cyclone cavity (14) is formed by sequentially connecting a cyclone cylindrical section (12), a cyclone inner cone (13) and a cyclone outer cone section (16), and a cyclone rectangular tangential inlet (11) is formed in the side wall of the top of the cyclone cylindrical section (12); the inner cone (13) of the cyclone is fixed at the top axis of the cylindrical section (12) of the cyclone;
the screw shaft rotor (3), the overflow oil conveying branch pipe (7), the cyclone overflow pipe (9), the cyclone inner cone (13), the cyclone cavity (14), the outer cone section (16) and the underflow pipe (19) are sequentially and fixedly connected on the same central axis to form an integral rotary structural member, and the integral rotary structural member is integrally rotated under the drive of the screw shaft rotor (3); the rectangular tangential inlet (11) of the cyclone is opposite to the spiral direction and is used for ensuring that the rotation direction of fluid entering the cyclone cavity (14) is consistent with the rotation direction of the screw shaft rotor (3) so as to form a cyclone centrifugal separation flow field;
the stator (2) is matched with the overflow oil conveying branch pipe (7) and the screw shaft rotor (3) at the upper part of the cyclone overflow pipe (9) to form an oil collecting cavity (6) and a spiral oil conveying gap (5), and is used for enabling oil phase which flows into the central overflow pipe inlet (15) after centrifugal separation to flow out, and water phase which is centrifugally separated enters the cyclone underflow pipe (19) and flows into the water collecting cavity (21) through the underflow round hole outlet (20);
the outer sleeve (4) is in transitional connection with the cyclone overflow pipe (9) through a first bearing (8), and the first bearing (8) is close to the stator (2) above and is in sealing connection with the inner side of the outer sleeve (4); the outer sleeve (4) is connected with the cyclone underflow pipe (19) in a sealing way by a second bearing (17) and a second bearing filling ring (18) which are positioned at the joint of the cyclone outer cone section (16) and the cyclone underflow pipe (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110896114.9A CN113617543B (en) | 2021-08-05 | 2021-08-05 | Underground dynamic cyclone separation system of screw pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110896114.9A CN113617543B (en) | 2021-08-05 | 2021-08-05 | Underground dynamic cyclone separation system of screw pump |
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| Publication Number | Publication Date |
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| CN113617543A CN113617543A (en) | 2021-11-09 |
| CN113617543B true CN113617543B (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110896114.9A Active CN113617543B (en) | 2021-08-05 | 2021-08-05 | Underground dynamic cyclone separation system of screw pump |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082452A (en) * | 1996-09-27 | 2000-07-04 | Baker Hughes, Ltd. | Oil separation and pumping systems |
| US6189613B1 (en) * | 1998-09-25 | 2001-02-20 | Pan Canadian Petroleum Limited | Downhole oil/water separation system with solids separation |
| 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 |
| CN104815768A (en) * | 2015-05-08 | 2015-08-05 | 东北石油大学 | Axial-flow-type inverted inlet flow channel swirler |
| CN107473329A (en) * | 2017-10-12 | 2017-12-15 | 大庆油田有限责任公司 | Underground three swirler separator |
| CN111350487A (en) * | 2020-05-07 | 2020-06-30 | 东北石油大学 | Jet pump-double screw pump same-well injection-production combined lifting system and method |
| CN112832734A (en) * | 2020-12-30 | 2021-05-25 | 东北石油大学 | Gas-liquid three-stage cyclone separation device in injection-production shaft of same well |
-
2021
- 2021-08-05 CN CN202110896114.9A patent/CN113617543B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082452A (en) * | 1996-09-27 | 2000-07-04 | Baker Hughes, Ltd. | Oil separation and pumping systems |
| US6189613B1 (en) * | 1998-09-25 | 2001-02-20 | Pan Canadian Petroleum Limited | Downhole oil/water separation system with solids separation |
| 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 |
| CN104815768A (en) * | 2015-05-08 | 2015-08-05 | 东北石油大学 | Axial-flow-type inverted inlet flow channel swirler |
| CN107473329A (en) * | 2017-10-12 | 2017-12-15 | 大庆油田有限责任公司 | Underground three swirler separator |
| CN111350487A (en) * | 2020-05-07 | 2020-06-30 | 东北石油大学 | Jet pump-double screw pump same-well injection-production combined lifting system and method |
| CN112832734A (en) * | 2020-12-30 | 2021-05-25 | 东北石油大学 | Gas-liquid three-stage cyclone separation device in injection-production shaft of same well |
Non-Patent Citations (1)
| Title |
|---|
| 丁文刚 ; 刘琳 ; 杜晓霞 ; 章宝玲 ; 杨国威 ; 吴广 ; 赵立新 ; .海上井下油水分离旋流器结构设计及优化研究.石油机械.2020,(第06期),全文. * |
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| CN113617543A (en) | 2021-11-09 |
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