CN203175529U - Bottom lead-into type downhole oil-water separating device - Google Patents
Bottom lead-into type downhole oil-water separating device Download PDFInfo
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- CN203175529U CN203175529U CN 201320034562 CN201320034562U CN203175529U CN 203175529 U CN203175529 U CN 203175529U CN 201320034562 CN201320034562 CN 201320034562 CN 201320034562 U CN201320034562 U CN 201320034562U CN 203175529 U CN203175529 U CN 203175529U
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Abstract
The utility model discloses a bottom lead-into type downhole oil-water separating device which is applied to double-packer downhole oil-water separating same-well picking-infusing pipe column structures According to the bottom lead-into type downhole oil-water separating device, produced liquid in a produced layer is led into a suction inlet of a double-shell electric submersible pump on the upper portion of the device through the annular portion of the device and other special flow channels in a bottom lead-into mode, original oil liquid is pressurized by the electric submersible pump and then returns into the device through a pump outlet to conduct oil-water separation, separated overflow liquid is directly discharged into the annular space of a sleeve pipe, underflow liquid enters a water pouring oil pipe through an inner-inserting pipe, and the arrangement of a by-pass pipe is avoided. The device comprises four hydrocyclones, the connection mode that every two of the four hydrocyclones are connected in parallel and then are connected in series is achieved through the structural design of the special flow channels, and separating efficiency and processing capacity of the downhole oil-water separating device are improved.
Description
Technical field
The utility model relates to the oilfield exploitation technical field, is a kind of underground oil-water separator, especially a kind of bottom introduction-type down-hole multilevel oily-water seperating equipment.
Background technology
The underground oil-water isolation technics can effectively must solve the high moisture problems of bringing owing to oil well, this technology can be implemented in the down-hole extraction liquid is carried out water-oil separating, with the isolated water filling layer of purifying waste water and being recycled into same well, only isolated enriched oil being lifted to ground, is a not only advantage technology of energy-conservation but also environmental protection.The core component of underground oil-water isolation technics is hydrocyclone, and hydrocyclone separating property and disposal ability are the keys that the underground oil-water isolation technics is effectively implemented.Traditional underground oil-water separator has disposed the down-hole hydrocyclone of plural serial stage tandem type, though can satisfy the requirement of separative efficiency to a certain extent, but still have bigger room for promotion, and be that the connecting mode of realizing series connection has to dispose bypass pipe, this measure makes system reliability reduce greatly.Feasible solution is to keep former coupled in series mode, introduces a plurality of small diameter hydraulic cyclones that are connected in parallel again and replace former single-stage major diameter hydrocyclone on the basis of coupled in series, namely adopts earlier the also connecting mode of back string.The separating property of a plurality of small diameter hydraulic cyclone parallel operations is better than the single-stage major diameter hydrocyclone of equal disposal ability.For avoiding the use of bypass pipe, can consider to adopt on twin packer underground oil-water separator tube rod structure basis the drainage scheme of bottom introduction-type.
The utility model content
For solving the down-hole single-stage or plural serial stage hydrocyclone efficient is low, the problem of bypass pipe poor reliability, the utility model proposes a kind of novel underground oil-water separator.Disposed four hydrocyclones in this device, adopted the mode of elder generation's back in parallel series connection to be divided into two groups, be respectively group and following group, every group comprises two hydrocyclones that connect with parallel way, and last group and following group is adopted series system to connect again.Parallel way refers to that liquid stream to be separated enters two hydrocyclones simultaneously and separates; Series system refers to that the underflow outlet of group hydrocyclone is communicated with the entrance of following group hydrocyclone, and last group underflow liquid enters down in the group and separates again.This device adopts the bottom of crude oil liquid to introduce mode, be that the crude oil liquid of extraction layer is incorporated into the annular space part this device from the bottom of this device, enter into Pump Suction Nozzle behind the annular space of this device of process and other special flow road, turn back to again through the stream of the liquid after the pump supercharging and carry out water-oil separating in this device.
Down-hole multilevel oily-water seperating equipment described in the utility model mainly comprises: be communicated with the top connection of double casing electric submersible pump intake and outlet opening, upper case with top connection formation annular space runner, have entrance channel, the cross-channel body last in parallel of overflow runner and crude oil liquid runner, the top hydrocyclone group in parallel that comprises two hydrocyclones, hydrocyclone group in parallel with top forms the middle housing of annular space runner, prevent the stay pipe of hydrocyclone unstability, the base for supporting of fixed support tube, the last positioning seat that has crude oil liquid runner and center flow channels, have entrance channel, the cross-channel body following in parallel of overflow runner and crude oil liquid runner, the circumscribed overflow oil nozzle that is easy to change, the bottom hydrocyclone group in parallel that comprises two hydrocyclones, hydrocyclone group in parallel with the bottom forms the lower case of annular space runner, the following positioning seat of band crude oil liquid runner and center flow channels is with interior, outer tube cooperates the spigot joint that forms crude oil liquid runner and water filling runner.
The utility model is that the technical scheme that its technical problem of solution adopts is: the top connection end face is processed with the central circular flowing hole, is communicated with the outlet opening of double casing electric submersible pump, and nearly wall is processed with annular flowing hole, is communicated with the intake of double casing electric submersible pump.Go up cross-channel body in parallel and be processed with two locating holes respectively with the end face of following cross-channel body in parallel, each hydrocyclone location and installation respectively also forms sealing with the locating hole coaxial cooperation in locating hole; The inner facing cut of locating hole is flat, is used for the axial location of hydrocyclone, mills inner face after flat and is processed with spout hole with the locating hole concentric, and the overflow protruded tube coaxial cooperation of spout hole and hydrocyclone and forming seals; Spout hole is communicated with casing annulus by a radial hole again, thereby the overflowing liquid of hydrocyclone is caused casing annulus, formed the overflow runner, the radial hole exit is processed with the internal thread hydraulic fluid port, be connected with circumscribed overflow oil nozzle, circumscribed overflow oil nozzle is easy to change; Basis at locating hole processes eccentric circular hole, and eccentric circular hole is with respect to the eccentric axis of locating hole, and the inner face of eccentric circular hole flushes with the inner face of locating hole, and eccentric circular hole length adapts with hydrocyclone entrance size less than the locating hole degree of depth; Eccentric circular hole eccentric direction in two locating holes is relative, chooses suitable eccentric throw, diameter, guarantees that two eccentric circular holes can intersect, and intersects the back intersection and produces a flow-passing surface, and this flow-passing surface area and inflow-rate of water turbine adapt; The other end of going up cross-channel body in parallel and following cross-channel body in parallel is processed with long flat flowing hole respectively, through to two eccentric circular holes, thereby has got through the entrance channel of hydrocyclone group in parallel.Go up cross-channel body in parallel and be processed with straight-through looping pit respectively with the nearly wall place of following cross-channel body in parallel, be used for getting through the crude oil liquid runner.Last positioning seat is the multidiameter shape with following positioning seat, big axle head end face is processed with the underflow pipe locating hole of two hydrocyclones, and little axle head end face is processed with center hole, and the inner face in two holes overlaps and drills through, the center hole aperture is enough big, and the coincidence face of assurance reaches certain area of passage; Cascaded surface is processed with a plurality of straight-through circular holes, is used for getting through the crude oil liquid runner.The spigot joint design has two place's internal threads, is used for connecting inside and outside intubate, and extraction layer crude oil liquid enters into spigot joint by the annular space between the inside and outside intubate; The nearly wall of spigot joint place is drilled with looping pit, has been communicated with the straight-through circular hole of time positioning seat; The straight-through circular hole of following positioning seat has been communicated with the annular space between the lower case hydrocyclone group in parallel with the bottom again, this annular space straight-through circular hole of the straight-through looping pit of nearly wall by following cross-channel body in parallel and last positioning seat again has been communicated with annular space between middle housing and the top parallel connection hydrocyclone group, the straight-through looping pit of nearly wall by last cross-channel body in parallel has been communicated with the annular space between upper case and the top connection again, the intake that has been communicated with the double casing electric submersible pump then by the nearly wall circular hole of top connection has formed the crude oil liquid passage of extraction layer thus.
The beneficial effects of the utility model are: can realize the parallel connection and serial connection work of multi-stage water power cyclone, promote separative efficiency and disposal ability, cooperate with inversion type electric pump unit to possess higher service behaviour; Overflowing liquid drains into casing annulus, by oil jacket annular space and the common lifting of oil pipe, has avoided the configuration of bypass pipe, and reliability is higher.
Description of drawings:
Fig. 1 is the utility model apparatus structure schematic diagram;
Fig. 2 is the connection diagram of the utility model device in underground oil-water separation same well production-injection system;
Fig. 3 is the A-A sectional view among Fig. 1;
Fig. 4 is the B-B sectional view among Fig. 1;
Fig. 5 is the C-C sectional view among Fig. 1;
Fig. 6 is the D-D sectional view among Fig. 1;
Fig. 7 is the E-E sectional view among Fig. 1;
Fig. 8 is the F-F sectional view among Fig. 1.
In Fig. 1,1. top connection, 2. upper case, 3. go up cross-channel body in parallel, 4. circumscribed overflow oil nozzle, 5. top hydrocyclone group in parallel, 6. middle housing, 7. stay pipe, 8. base for supporting, 9. go up positioning seat, 10. time cross-channel body in parallel, 11. bottoms hydrocyclone group in parallel, 12. lower case, 13. following positioning seat, 14. spigot joints, 15,16,17,18,19,20,21,22,23,24,25,26,27, the 28.O RunddichtringO.
In Fig. 2,29. lifting oil pipes, 30. cables, 31. high-voltage cable joints, 32. submersible electric machine with oils; 33. protector, 34. double casing electric submersible pumps, 35. interpolation pipes, 36. outer tubes, 37. plug-in type sealing devices; 38.Y441 packer, 39. sliding sleeve switches, 40.Y341 packer, 41. water filling oil pipes.
The specific embodiment:
Fig. 1 is bottom introduction-type down-hole multilevel oily-water seperating equipment structural representation, and top connection (1) is connected with last cross-channel body in parallel (3) by sealing thread, and upper case (2) is positioned between the two and forms coaxial cooperation, finishes the location after axially blocking; Middle housing (6) is connected by sealing thread with last cross-channel body in parallel (3), following cross-channel body in parallel (10); Four hydrocyclones are installed in respectively in the locating hole of cross-channel body in parallel (3) and cross-channel body in parallel (10) down, use stay pipe (7) and base for supporting (8) to support respectively, use positioning seat (9), descend positioning seat (13) to finish the location; Lower case (12) uses sealing thread to be connected with following cross-channel body in parallel (10), uses sealing thread to be connected with spigot joint (14); Circumscribed overflow oil nozzle (4) uses sealing thread to be installed in cross-channel body in parallel (3) and the external oil port that descends cross-channel body in parallel (10).
Fig. 2 is the connection diagram of the utility model device in underground oil-water separation same well production-injection system; the electric pump unit adopts the inversion type connected mode, is followed successively by cable (30), high-voltage cable joint (31), submersible electric machine with oil (32), protector (33), double casing electric submersible pump (34) from top to bottom.Top connection (1) is connected with double casing electric submersible pump (34) by flange; Interpolation pipe (35) is connected by sealing thread with spigot joint (14), and outer tube (36) is connected by tubing thread with spigot joint (14).
During the system operate as normal, the highly aqueous liquid of extraction layer is through sliding sleeve switch (39), the annular space that interpolation pipe (35) and outer tube (36) constitute, enter into the crude oil liquid runner of spigot joint (14), the straight-through circular hole of positioning seat (13) enters the annular space runner of lower case (12) again under the process that makes progress, the straight-through circular hole of the straight-through looping pit of cross-channel body in parallel (10) and last positioning seat (9) enters into the annular space runner of middle housing (6) under continuing upwards to pass through, upwards enter into the annular space runner of upper case (2) then through the straight-through looping pit of last cross-channel body in parallel (3), the looping pit that passes through top connection (1) again enters into double casing electric submersible pump (34) and carries out supercharging, crude oil liquid after the supercharging is entered into the center hole of top connection (1) by pump discharge, cross-channel body in parallel (3) entrance channel enters into top hydrocyclone group in parallel (5) and separates on the process, liquid flow point after the separation is two parts: a part is the overflow mixed liquor, and the circumscribed overflow oil nozzle (4) of flowing through is expelled to the oil jacket annular space; Another part is the underflow mixed liquor, entered into down the entrance channel of cross-channel body in parallel (10) by the center flow channels of last positioning seat (9), entering into bottom hydrocyclone group in parallel (11) then separates, liquid stream after the separation also is divided into two parts: a part is the overflow mixed liquor, be expelled to the oil jacket annular space by circumscribed overflow oil nozzle (4), mix with the overflowing liquid of top hydrocyclone group in parallel (5), be lifted to ground jointly by casing annulus and lifting oil pipe (29); Another part is the underflow mixed liquor, by the center flow channels of positioning seat (13) and the center flow channels of spigot joint (14) enter into interpolation pipe (35) down, enter into water filling oil pipe (41) through interpolation pipe (35), finally arrive the water filling layer, be injected in the stratum.
Claims (4)
1. bottom introduction-type down-hole multilevel oily-water seperating equipment, comprise top connection (1), upper case (2), go up cross-channel body in parallel (3), circumscribed overflow oil nozzle (4), top hydrocyclone group (5) in parallel, middle housing (6), stay pipe (7), base for supporting (8), last positioning seat (9), following cross-channel body in parallel (10), bottom hydrocyclone group (11) in parallel, lower case (12), following positioning seat (13), spigot joint (14), it is characterized in that: top hydrocyclone group in parallel (5) comprises two hydrocyclones, and location and installation is in two locating holes of last cross-channel body in parallel (3) respectively; Bottom hydrocyclone group in parallel (11) comprises two hydrocyclones, and location and installation is in two locating holes of following cross-channel body in parallel (10) respectively.
2. bottom according to claim 1 introduction-type down-hole multilevel oily-water seperating equipment, it is characterized in that: go up cross-channel body in parallel (3) and be processed with two locating holes respectively with the end face of following cross-channel body in parallel (10), basis at locating hole processes eccentric circular hole, eccentric circular hole eccentric direction in two locating holes is relative, and two eccentric circular holes intersect and produce a flow-passing surface; Upward be processed with spout hole in the locating hole of cross-channel body in parallel (3) and following cross-channel body in parallel (10), spout hole is communicated with the oil jacket annular space by a radial hole, and the radial hole export processing has the screw thread hydraulic fluid port; The other end of going up cross-channel body in parallel (3) and following cross-channel body in parallel (10) is processed with long flat flowing hole respectively, through to two eccentric circular holes; Go up cross-channel body in parallel (3) and be processed with straight-through looping pit respectively with the nearly wall place of following cross-channel body in parallel (10).
3. bottom according to claim 1 introduction-type down-hole multilevel oily-water seperating equipment, it is characterized in that: go up positioning seat (9) and be the multidiameter shape with following positioning seat (13), cascaded surface is processed with a plurality of straight-through circular holes, and big axle head end face is processed with the underflow pipe locating hole of two hydrocyclones.
4. bottom according to claim 1 introduction-type down-hole multilevel oily-water seperating equipment, it is characterized in that: the nearly wall place of spigot joint (14) is drilled with looping pit, has been communicated with the straight-through circular hole of time positioning seat (13); The straight-through circular hole of following positioning seat (13) has been communicated with the annular space between lower case (12) the hydrocyclone group in parallel with the bottom (11) again, this annular space straight-through circular hole of the straight-through looping pit of nearly wall by following cross-channel body in parallel (10) and last positioning seat again has been communicated with annular space between middle housing (6) and the top hydrocyclone group in parallel (5), and the nearly wall by last cross-channel body in parallel (3) leads directly to looping pit and has been communicated with annular space between upper case (2) and the top connection (1) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034562 CN203175529U (en) | 2013-01-23 | 2013-01-23 | Bottom lead-into type downhole oil-water separating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034562 CN203175529U (en) | 2013-01-23 | 2013-01-23 | Bottom lead-into type downhole oil-water separating device |
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| Publication Number | Publication Date |
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| CN203175529U true CN203175529U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320034562 Expired - Fee Related CN203175529U (en) | 2013-01-23 | 2013-01-23 | Bottom lead-into type downhole oil-water separating device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107001073A (en) * | 2014-11-21 | 2017-08-01 | 克劳德伯斯特方案有限公司 | System and method for Water warfare |
| CN110732154A (en) * | 2019-12-06 | 2020-01-31 | 中国科学院青岛生物能源与过程研究所 | internal circulation reaction crystallizer |
| CN113006766A (en) * | 2021-04-26 | 2021-06-22 | 东北石油大学 | Be applicable to downhole gas-liquid separation of shale oil pumping unit oil production system |
-
2013
- 2013-01-23 CN CN 201320034562 patent/CN203175529U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107001073A (en) * | 2014-11-21 | 2017-08-01 | 克劳德伯斯特方案有限公司 | System and method for Water warfare |
| CN110732154A (en) * | 2019-12-06 | 2020-01-31 | 中国科学院青岛生物能源与过程研究所 | internal circulation reaction crystallizer |
| CN113006766A (en) * | 2021-04-26 | 2021-06-22 | 东北石油大学 | Be applicable to downhole gas-liquid separation of shale oil pumping unit oil production system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20170123 |