CN107060724A - Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well - Google Patents
Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well Download PDFInfo
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- CN107060724A CN107060724A CN201710144684.6A CN201710144684A CN107060724A CN 107060724 A CN107060724 A CN 107060724A CN 201710144684 A CN201710144684 A CN 201710144684A CN 107060724 A CN107060724 A CN 107060724A
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- oil
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- pipe
- inner housing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 31
- 239000003921 oil Substances 0.000 claims description 98
- 241000252254 Catostomidae Species 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 239000010779 crude oil Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 230000001808 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract 1
- 235000019198 oils Nutrition 0.000 description 53
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/38—Arrangements for separating materials produced by the well in the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/40—Separation associated with re-injection of separated materials
Abstract
Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well, belong to field of oilfield exploitation, it is made up of sleeve pipe, upper oil pipe, top cross-channel body, lower oil pipe, screw pump supercharging device, water-oil separating swirl-flow devices, downhole oil-water separation re-injection and lifting device, it is characterised in that：Upper oil pipe, top cross-channel body, lower oil pipe, screw pump supercharging device, water-oil separating swirl-flow devices, downhole oil-water separation re-injection and lifting device are arranged in sleeve pipe, and screw pump supercharging device is connected with water-oil separating swirl-flow devices by top cross-channel body；Water-oil separating swirl-flow devices are connected with downhole oil-water separation re-injection device by lower oil pipe, and water-oil separating swirl-flow devices are connected with downhole oil-water separation lifting device by upper and lower outer oil nozzle.The design that two single-screw (single screw) pumps are arranged symmetrically in the axial direction causes the axial force produced during supercharging to cancel out each other, and reduces limitation of the oil well depth to oily water separation technique, special runner causes part processing cost to substantially reduce.
Description
Technical field
Patent of the present invention is related to field of oilfield exploitation, is a kind of downhole oil-water separation device, is particularly suitable for use in deep-well and height
Oily-water seperating equipment under a kind of surface drive screw pump wells of re-injection pressure well.
Background technology
Downhole oil-water separation technology be emerging in recent years one efficiently, the new technology of energy-saving and environmental protection.Can be in same well
It is interior to carry out the separating of the producing of oil water mixture, oil and water, the lifting of oil and the re-injection of output water.Current existing downhole oil
Water separating system, runner is complicated and changeable, and this make it that resistance suffered by the fluid after supercharging is larger, and the boosting capability of booster pump is proposed
Very high requirement, while the complexity of runner also causes breakdown maintenance to become difficult, in addition existing oil-water separation system by
The influence of system itself pressure when failing to solve fluid supercharging, the axial force that hydraulic load is produced can only be by hollow oil pumping
Bar is offset, and this strictly limits the applicable depth of downhole oil-water separation system.The present invention proposes a kind of suitable for deep-well and height
Ground driving double-screw pump downhole oil-water separation device under re-injection pressure, runner is simple, screw pump connection and reasonable arrangement, operation detection
It is convenient.
The content of the invention
It is an object of the invention to provide a kind of runner it is simple, applied to deep-well and the downhole oil moisture of high re-injection pressure well
From device.
Technical problem solved by the invention is：The configuration of screw pump supercharging device, water-oil separating swirl-flow devices, downhole oil
Water separates the design of the connected mode and internal structure between re-injection and lifting device each several part, and the technical scheme of use is such as
Under：Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well, by sleeve pipe, upper oil pipe, top cross-current
Road body, lower oil pipe, screw pump supercharging device, water-oil separating swirl-flow devices, downhole oil-water separation re-injection and lifting device are constituted, its
It is characterised by：Upper oil pipe, top cross-channel body, lower oil pipe, screw pump supercharging device, water-oil separating swirl-flow devices, downhole oil
Water separates re-injection and is arranged on lifting device in sleeve pipe, and screw pump supercharging device is intersected with water-oil separating swirl-flow devices by top
Runner body is connected；Water-oil separating swirl-flow devices are connected with downhole oil-water separation re-injection device by lower oil pipe, water-oil separating eddy flow
Device is connected with downhole oil-water separation lifting device by upper and lower outer oil nozzle；
The screw pump supercharging device by sucker rod, flow path structure of turning back, upper outer shell, upper single-screw (single screw) pump, upper inner housing,
Flexible axle, middle inner housing, lower shell body, lower inner housing and lower single-screw (single screw) pump composition, sucker rod are connected with upper single-screw (single screw) pump, rolled over
Backflowed trace header upper end and the pipe thread seal that oils, and runner head bottom diameter of turning back is sealed with upper single-screw (single screw) pump to be coordinated, runner of turning back
Annular fiowpath, upper inner housing, lower inner casing in head lower end external diameter, upper inner housing upper end external diameter and upper outer shell thread seal, composition
Body coordinates with middle inner housing, and annular fiowpath in composition, lower inner housing lower end coordinates with top cross-channel body, lower shell body upper end
With upper interior body thread seal, lower end intersects with top exchanges body thread seal, and sucker rod is connected with upper single-screw (single screw) pump upper end, upper list
Screw pump upper end and runner body coaxial line cooperation of turning back, lower end coordinate with upper inner housing coaxial line, and lower single-screw (single screw) pump upper end is with
Inner housing coaxial line coordinates, and lower single-screw (single screw) pump lower end intersects with lower inner housing, top exchanges the cooperation of body coaxial line, upper single-screw (single screw) pump
It is connected with lower single-screw (single screw) pump by flexible axle；
The water-oil separating swirl-flow devices are by bipyramid cyclone, shell body A, upper support tube, upper support base, upper positioning
Seat, middle part cross-channel body, single cone cyclone, shell body B, lower support tube, lower support base, pipe joint composition, bipyramid eddy flow
Device intersects with top exchanges the cooperation of body positioning hole, and a bipyramid cyclone bottom is inserted in positioning seat positioning hole, bipyramid eddy flow
Device support tube, the support of upper support base, upper support base coordinate with upper positioning seat, upper positioning seat and middle part cross-channel body
Axially engage, shell body A and top cross-channel body, middle part cross-channel body thread seal constitute annular fiowpath, single coning stream
Device coordinates with middle part cross-channel body positioning hole, and a single cone cyclone bottom is inserted in pipe joint positioning hole, single cone cyclone
Supported with lower support tube, lower support base, lower support base coordinates with pipe joint, shell body B connects with middle part cross-channel body, pipe
Head thread is sealed；
The downhole oil-water separation re-injection and lifting device are by bypass pipe, three-way connection, upper outer oil nozzle, lower oil pipe, lower outer
Oil nozzle, Y351 packers, check valve, ball seat, screen casing, plug composition are suppressed, lower oil pipe axially engages with pipe joint, the underground
Water-oil separating re-injection device installs lower oil pipe, Y351 packers, check valve, suppresses ball seat, screen casing, plug successively from top to bottom,
End face is machined with the spout hole concentric with positioning hole in the cross-channel body of top, and the overflow of spout hole and bipyramid cyclone is stretched out
Pipe coaxial cooperation simultaneously forms sealing, and radial hole exit is machined with internal thread hydraulic fluid port, is connected with upper outer oil nozzle, and upper outer oil nozzle is another
End face is machined with end and bypass pipe thread connection, the other end and the three-way pipe thread connection of bypass pipe, middle part cross-channel body
The concentric spout hole with positioning hole, spout hole bores the overflow protruded tube coaxial cooperation of cyclone with list and forms sealing, radially
Internal thread hydraulic fluid port is machined with hole exits, is connected with lower outer oil nozzle, the lower outer oil nozzle other end and bypass pipe thread connection, bypass pipe
The other end and three-way pipe thread connection, three-way pipe and upward bypass pipe thread connection.
The nearly wall of flow path structure of turning back is machined with 4 straight-through looping pits, is communicated with middle hollow duct, leads directly to annular
Hole is communicated with the upper annular fiowpath that upper outer shell is constituted, the annular fiowpath of the nearly wall processing of upper annular fiowpath and upper inner housing upper end,
3 straight-through looping pits of the left demifacet in lower end nearly wall processing are communicated, the straight-through looping pit of upper inner housing successively downwards with middle inner housing
3 straight-through looping pits of left demifacet, 3 straight-through looping pits of the left demifacet of lower inner housing, top cross-channel body upper end it is left
The fan-shaped hollow duct of epimere half, top cross-channel body lower end are straight greatly in 3 straight-through looping pits of demifacet, top cross-channel body
Logical looping pit is communicated, and top cross-channel body lower end is led directly between looping pit and bipyramid cyclone, upper support tube and shell body A greatly
Lower annular fiowpath connection, thus constitute crude oil liquid enter screw pump supercharging device be pressurized before passage.
3 straight-through looping pits, the right-half plane of lower inner housing of the middle circulation channel downwards successively with middle inner housing lower end
3 straight-through looping pits, 3 straight-through looping pits of the top cross-channel body first half, top cross-channel body lower end it is big straight
Logical looping pit is communicated, and the looping pit straight-through greatly of top cross-channel body lower end is communicated with the entrance of bipyramid cyclone, is thus constituted
Crude oil liquid enters the passage of water-oil separating swirl-flow devices after supercharging.
3 straight-through looping pits of the nearly wall processing of the upper left demifacet in inner housing lower end, 3 with the left demifacet of middle inner housing
Straight-through looping pit is communicated, and 3 straight-through looping pits of the nearly wall processing of upper inner housing lower end right-half plane are sealed by middle inner housing.
Described water-oil separating swirl-flow devices are made up of two-stage cyclones, bipyramid cyclone outlet and single cone cyclone inlet
Communicated by the tiltedly logical annular channel of the nearly wall of middle part cross-channel body.
The upper outer oil nozzle, lower outer oil nozzle are circumscribed, it is easy to changed.
The upper single-screw (single screw) pump, lower single-screw (single screw) pump remaining structural parameters in addition to the rotation direction of screw rod-bushing pair is different are equal
It is identical, and be arranged symmetrically in the axial direction, outlet is opposite with respect to suction inlet, in outlet end two screw rods of flexible shaft coupling
Rotor.When carrying out downhole oil-water separation operation, when two single-screw (single screw) pumps with same rotational speed pressurize to fluid, hydraulic load is produced
Axial force size it is about the same, in the opposite direction, the two can cancel out each other, this cause whole sucker rod almost only by radially
The effect (influence for removing self gravitation) of shearing force, so that the pump setting depth of sucker rod can be with deeper.
The invention has the advantages that：
(1) compared with existing downhole oil-water separation device, the runner of the device is simple, easily assembling, and part is manufactured
Cost is relatively low.
(2) compared with existing ground driving downhole oil-water separation device, the device can be with automotive resistance waterpower due to itself
The excessive axial force that load is produced, its active force to sucker rod is smaller, therefore available for deep mining, and well head pressure
It is low, it is not necessary to high voltage bearing wellhead assembly.
(3) runner that crude oil liquid enters booster pump reduces fluid into the pressure loss before cyclone close to booster pump,
The inlet pressure that fluid enters cyclone is increased, the energy consumption of booster pump is reduced, many unnecessary runners, fortune are reduced
Row is relatively reliable.
(4) present invention can also be adapted as experimental rig, and the fluid after will separating twice guides to ground with bypass pipe respectively,
The concentration of fluid after measurement is separated twice, necessary data are provided for the geometric parameter research of oil-water separation cyclone.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Accompanying drawing 2 is fluid flow schematic diagram；
Accompanying drawing 3 is the structural representation of screw pump supercharging device；
Accompanying drawing 4 is the A-A sectional views of flow path structure of turning back in Fig. 3；
Accompanying drawing 5 is upper inner housing and the B-B sectional views of lower shell body in Fig. 3；
Accompanying drawing 6 is middle inner housing and the C-C sectional views of lower shell body in Fig. 3；
Accompanying drawing 7 is lower inner housing and the D-D sectional drawings of lower shell body in Fig. 3；
Accompanying drawing 8 is Fig. 3 middle and upper parts cross-channel and the E-E sectional drawings of lower shell body；
Accompanying drawing 9 is Fig. 3 middle and upper parts cross-channel and the F-F sectional drawings of lower shell body；
Accompanying drawing 10 is the G-G sectional drawings of Fig. 3 middle and upper parts cross-channel；
Accompanying drawing 11 is the H-H sectional drawings of Fig. 3 middle and upper parts cross-channel；
Accompanying drawing 12 is the I-I sectional drawings of Fig. 3 middle and lower parts cross-channel；
Accompanying drawing 13 is I partial enlarged drawings in Fig. 1；
Accompanying drawing 14 is II partial enlarged drawings in Fig. 1.
Symbol description：
1. sleeve pipe, 2. bypass pipes, oil pipe on 3., 4. sucker rods, 5. are turned back flow path structure, 6. upper outer shells, single spiral shell on 7.
Bar pump, inner housing in inner housing, 9. flexible axles, 10. on 8., 11. lower shell bodies, 12. times inner housings, 13. times single-screw (single screw) pumps,
14. three-way connection, outer oil nozzle on 15., 16. top cross-channel bodies, 17. bipyramid cyclones, 18. shell body A, support on 19.
Pipe, support base on 20., on 21. under positioning seat, 22. middle part cross-channel bodies, 23. single cone cyclones, 24. shell body B, 25.
Support tube, 26. times support bases, 27. pipe joints, 28. times oil pipes, 29. times outer oil nozzles, 30.Y351 packers, 31. check valves,
32. suppress ball seat, 33. screen casings, 34. plugs, 35. screw pump supercharging devices, 36. water-oil separating swirl-flow devices；A to q is liquid
Flow runner.
Embodiment
The invention will be further described with example below in conjunction with the accompanying drawings：
As represented in figures 1 through 14, oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well, by sleeve pipe
(1), upper oil pipe (3), top cross-channel body (16), lower oil pipe (28), screw pump supercharging device (35), water-oil separating eddy flow dress
(36), downhole oil-water separation re-injection and lifting device is put to constitute, it is characterised in that：Upper oil pipe (3), top cross-channel body
(16), lower oil pipe (28), screw pump supercharging device (35), water-oil separating swirl-flow devices (36), downhole oil-water separation re-injection are with lifting
Rise device to be arranged in sleeve pipe (1), screw pump supercharging device (35) passes through top cross-current with water-oil separating swirl-flow devices (36)
Road body (16) is connected；Water-oil separating swirl-flow devices (36) are connected with downhole oil-water separation re-injection device by lower oil pipe (28), oil
Water separation swirl-flow devices (36) are connected with downhole oil-water separation lifting device by upper and lower outer oil nozzle (15,29)；
The screw pump supercharging device (35) is by sucker rod (4), flow path structure of turning back (5), upper outer shell (6), upper single spiral shell
Bar pump (7), upper inner housing (8), flexible axle (9), middle inner housing (10), lower shell body (11), lower inner housing (12) and place an order
Screw pump (13) is constituted, and sucker rod (4) is connected with upper single-screw (single screw) pump (7), turn back runner head (5) upper end and upper oil pipe (3) screw thread
Sealing, runner head (5) bottom diameter of turning back is sealed with upper single-screw (single screw) pump to be coordinated, turn back runner head (5) lower end external diameter, upper inner housing
(8) annular fiowpath d in upper end external diameter and upper outer shell (6) thread seal, composition, upper inner housing (8), lower inner housing (12) are with
Inner housing coordinates, and annular fiowpath (g) in composition, lower inner housing (12) lower end coordinates with top cross-channel body (16), lower casing
Body (11) upper end and upper interior body (8) thread seal, lower end intersects with top exchanges body (16) thread seal, sucker rod (4) with it is upper
Single-screw (single screw) pump (7) upper end is connected, upper single-screw (single screw) pump (7) upper end and the turn back cooperation of runner body (5) coaxial line, lower end and upper inner housing
(8) coaxial line coordinates, and lower single-screw (single screw) pump (13) upper end and middle inner housing (10) coaxial line coordinate, lower single-screw (single screw) pump lower end with it is lower interior
Housing (12), top intersect exchange body (16) coaxial line and coordinated, and upper single-screw (single screw) pump (7) passes through flexible axle with lower single-screw (single screw) pump (13)
(9) it is connected；
The water-oil separating swirl-flow devices (36) by bipyramid cyclone (17), shell body A (18), upper support tube (19), on
Support base (20), upper positioning seat (21), middle part cross-channel body (22), single cone cyclone (23), shell body B (24), lower branch
Stay tube (25), lower support base (26), pipe joint (27) composition, bipyramid cyclone (17) intersects with top exchanges body (16) positioning
Hole coordinates, and bipyramid cyclone (17) bottom is inserted in positioning seat (21) positioning hole, bipyramid cyclone (17) support
(19), upper support base (20) support are managed, upper support base (20) coordinates with upper positioning seat (21), upper positioning seat (21) and middle part
Cross-channel body (22) is axially engaged, shell body A (18) and top cross-channel body (16), middle part cross-channel body (22) screw thread
Sealing, constitutes annular fiowpath, and single cone cyclone (23) coordinates with middle part cross-channel body (22) positioning hole, a single cone cyclone
(23) bottom is inserted in pipe joint (27) positioning hole, and single cone cyclone (23) is propped up with lower support tube (25), lower support base (26)
Support, lower support base (26) coordinates with pipe joint (27), shell body B (24) and middle part cross-channel body (22), pipe joint (27)
Thread seal；
The downhole oil-water separation re-injection and lifting device by bypass pipe (2), three-way connection (14), upper outer oil nozzle (15),
Lower oil pipe (28), lower outer oil nozzle (29), Y351 packers (30), check valve (31), suppress ball seat (32), screen casing (33), plug
(34) constitute, lower oil pipe (28) axially engages with pipe joint (27), the downhole oil-water separation re-injection device is from top to bottom successively
Lower oil pipe (28), Y351 packers (30) are installed, check valve (31), ball seat (32), screen casing (33), plug (34) is suppressed, top
Cross-channel body (16) inner face is machined with the spout hole concentric with positioning hole, the overflow of spout hole and bipyramid cyclone (17)
Protruded tube coaxial cooperation simultaneously forms sealing, and radial hole exit is machined with internal thread hydraulic fluid port, is connected with upper outer oil nozzle (15), upper outer
Oil nozzle (15) other end and bypass pipe (2) thread connection, the other end and three-way pipe (14) thread connection, middle part of bypass pipe (2)
Cross-channel body (22) inner face is machined with the spout hole concentric with positioning hole, spout hole and the overflow of single cone cyclone (23)
Protruded tube coaxial cooperation simultaneously forms sealing, and radial hole exit is machined with internal thread hydraulic fluid port, is connected with lower outer oil nozzle (29), lower outer
Oil nozzle (29) other end and bypass pipe (2) thread connection, the other end and three-way pipe (14) thread connection, threeway of bypass pipe (2)
Manage (14) with upward bypass pipe (2) thread connection.
The nearly wall of the flow path structure of turning back (5) is machined with 4 straight-through looping pits (d), with middle hollow duct (f) phase
Logical, straight-through looping pit (d) is communicated with the upper annular fiowpath (d) that upper outer shell (6) is constituted, upper annular fiowpath d and upper inner housing (8)
3 straight-through looping pits (d) of the nearly wall processing of annular fiowpath, the left demifacet in lower end of the nearly wall processing in upper end communicate, upper inner housing (8)
Straight-through looping pit (d) 3 straight-through looping pits (d) successively downwards with the left demifacet of middle inner housing, left the half of lower inner housing (12)
3 straight-through looping pits (d) in face, 3 straight-through looping pits (d) of the left demifacet in top cross-channel body (15) upper end, top intersect
The fan-shaped hollow duct (e) of epimere half, the straight-through looping pit (c) in top cross-channel body (16) lower end 3 communicate in runner body (16),
Top cross-channel body (16) the straight-through looping pit (c) in lower end 3 and bipyramid cyclone (17), upper support tube (19) and shell body A
(18) the lower annular fiowpath connection between, thus constitutes crude oil liquid and enters the passage before screw pump supercharging device (35) is pressurized.
The middle circulation channel (g) 3 straight-through looping pits (h) successively with middle inner housing (10) lower end, lower inner casing downwards
3 straight-through looping pits (h) of the right-half plane of body (12), 3 straight-through looping pits (h) of top cross-channel body (16) first half,
The looping pit straight-through greatly of top cross-channel body (16) lower end is communicated, the looping pit straight-through greatly of top cross-channel body (16) lower end
Communicated with the entrance of bipyramid cyclone (17), thus crude oil liquid enters the logical of water-oil separating swirl-flow devices (36) after composition supercharging
Road.
3 straight-through looping pits of the nearly wall processing of the left demifacet in upper inner housing (8) lower end, left half with middle inner housing (10)
3 straight-through looping pits (d) in face communicate, and 3 straight-through looping pits (d) of the nearly wall processing of upper inner housing (8) lower end right-half plane are by
Inner housing (10) is sealed.
Described water-oil separating swirl-flow devices (36) are made up of two-stage cyclones, bipyramid cyclone (17) outlet and single coning
Stream device (23) entrance is communicated by the direct current channel (k) of the nearly wall of middle part cross-channel body (22).
The upper outer oil nozzle (15), lower outer oil nozzle (29) are circumscribed, it is easy to changed.
The upper single-screw (single screw) pump (7), lower single-screw (single screw) pump (13) remaining structure in addition to the rotation direction of screw rod-bushing pair is different
Parameter all same, and be arranged symmetrically in the axial direction, outlet is opposite with respect to suction inlet, in the flexible shaft coupling two of outlet end
Individual screw rotor.When carrying out downhole oil-water separation operation, when two single-screw (single screw) pumps with same rotational speed pressurize to fluid, waterpower is carried
Lotus produce axial force size it is about the same, in the opposite direction, the two can cancel out each other, this cause whole sucker rod almost only by
To the effect (influence for removing self gravitation) of radial shear power, so that the pump setting depth of sucker rod can be with deeper.
As shown in Fig. 2 workflow is：Flow process is the high water-content crude oil liquid from producing horizon by riddling sleeve pipe
(1), in the annular space a that upper oil pipe (3), lower oil pipe (28) and Y341 packers (30) are surrounded, the hole on shell body A (18)
Into chamber b, the runner c of top cross-channel body (16) is entered back into, a high water-content crude oil liquid part is by top cross-channel
The runner e of body (16), enters the empty runner g of middle ring after being pressurized through lower single-screw (single screw) pump (13), high water-content crude oil liquid another part passes through
Runner d, the runner d of middle inner housing, upper annular fiowpath d, the runner d for runner body (5) of turning back of lower inner housing (12), into turning back
Runner body (5) hollow duct (f), enters the empty runner g of middle ring, up and down single-screw (single screw) pump (7,13) after being pressurized through upper single-screw (single screw) pump (7)
High water-content crude oil liquid after supercharging is after middle annular fiowpath g mixing, inner housing (10) runner g, lower inner housing (12) runner in
H, top cross-channel body (16) runner h, water-oil separating processing is carried out into bipyramid cyclone (17) cavity volume i, and that isolates overflows
Flow liquid is through upper outer oil nozzle (15) overflow runner j, then after three-way connection (14) runner o mixing, into bypass pipe (2) lifting
To ground, runner k of the underflow mixed liquor through middle part cross-channel body (22), the cavity volume i into single cone cyclone (23) enters to advance
One step is separated, and the overflowing liquid isolated enters bypass pipe (2) runner n through lower outer oil nozzle (29) overflow runner m, then by threeway
After joint (14) runner o mixing, ground is lifted into bypass pipe (2), the underflow mixed liquor isolated flows through lower oil pipe (28)
Road p, then through check valve (31), suppress ball seat (32), screen casing (33), plug (34) runner q be injected into water filling layer, complete well
Lower water-oil separating and same-well injection water process.
For the ordinary skill in the art, according to the teachings of the present invention, do not depart from the present invention principle with
In the case of spirit, changes, modifications, replacement and the modification carried out to embodiment still fall within protection scope of the present invention it
It is interior.
Claims (7)
1. oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well, by sleeve pipe (1), upper oil pipe (3), on
Portion's cross-channel body (16), lower oil pipe (28), screw pump supercharging device (35), water-oil separating swirl-flow devices (36), underground oil-water
Re-injection is separated to constitute with lifting device, it is characterised in that：Upper oil pipe (3), top cross-channel body (16), lower oil pipe (28), spiral shell
Bar pump supercharging device (35), water-oil separating swirl-flow devices (36), downhole oil-water separation re-injection and lifting device are arranged on sleeve pipe (1)
Interior, screw pump supercharging device (35) is connected with water-oil separating swirl-flow devices (36) by top cross-channel body (16)；Profit point
Be connected from swirl-flow devices (36) with downhole oil-water separation re-injection device by lower oil pipe (28), water-oil separating swirl-flow devices (36) with
Downhole oil-water separation lifting device is connected by upper and lower outer oil nozzle (15,29)；
The screw pump supercharging device (35) is by sucker rod (4), flow path structure of turning back (5), upper outer shell (6), upper single-screw (single screw) pump
(7), upper inner housing (8), flexible axle (9), middle inner housing (10), lower shell body (11), lower inner housing (12) and lower single screw rod
Pump (13) is constituted, and sucker rod (4) is connected with upper single-screw (single screw) pump (7), turn back runner head (5) upper end and upper oil pipe (3) thread seal,
Runner head (5) bottom diameter of turning back is sealed with upper single-screw (single screw) pump to be coordinated, on runner head (5) lower end external diameter of turning back, upper inner housing (8)
Hold annular fiowpath d in external diameter and upper outer shell (6) thread seal, composition, upper inner housing (8), lower inner housing (12) and middle inner casing
Body coordinates, and annular fiowpath (g) in composition, lower inner housing (12) lower end coordinates with top cross-channel body (16), lower shell body
(11) upper end and upper interior body (8) thread seal, lower end intersects with top exchanges body (16) thread seal, sucker rod (4) and upper list
Screw pump (7) upper end is connected, upper single-screw (single screw) pump (7) upper end and the turn back cooperation of runner body (5) coaxial line, lower end and upper inner housing
(8) coaxial line coordinates, and lower single-screw (single screw) pump (13) upper end and middle inner housing (10) coaxial line coordinate, lower single-screw (single screw) pump lower end with it is lower interior
Housing (12), top intersect exchange body (16) coaxial line and coordinated, and upper single-screw (single screw) pump (7) passes through flexible axle with lower single-screw (single screw) pump (13)
(9) it is connected；
The water-oil separating swirl-flow devices (36) are by bipyramid cyclone (17), shell body A (18), upper support tube (19), upper support
Base (20), upper positioning seat (21), middle part cross-channel body (22), single cone cyclone (23), shell body B (24), lower support tube
(25), lower support base (26), pipe joint (27) composition, bipyramid cyclone (17) intersects with top to be exchanged body (16) positioning hole and matches somebody with somebody
Close, bipyramid cyclone (17) bottom is inserted in positioning seat (21) positioning hole, and bipyramid cyclone (17) uses support tube
(19), upper support base (20) support, upper support base (20) coordinates with upper positioning seat (21), and upper positioning seat (21) is handed over middle part
Distributary road body (22) is axially engaged, and shell body A (18) and top cross-channel body (16), middle part cross-channel body (22) screw thread are close
Envelope, constitutes annular fiowpath, and single cone cyclone (23) coordinates with middle part cross-channel body (22) positioning hole, a single cone cyclone
(23) bottom is inserted in pipe joint (27) positioning hole, and single cone cyclone (23) is propped up with lower support tube (25), lower support base (26)
Support, lower support base (26) coordinates with pipe joint (27), shell body B (24) and middle part cross-channel body (22), pipe joint (27)
Thread seal；
The downhole oil-water separation re-injection is with lifting device by bypass pipe (2), three-way connection (14), upper outer oil nozzle (15), lower oil
Pipe (28), lower outer oil nozzle (29), Y351 packers (30), check valve (31), suppress ball seat (32), screen casing (33), plug (34)
Composition, lower oil pipe (28) is axially engaged with pipe joint (27), and the downhole oil-water separation re-injection device is installed successively from top to bottom
Lower oil pipe (28), Y351 packers (30), check valve (31), suppress ball seat (32), screen casing (33), plug (34), top intersects
Runner body (16) inner face is machined with the spout hole concentric with positioning hole, and the overflow of spout hole and bipyramid cyclone (17) is stretched out
Pipe coaxial cooperation simultaneously forms sealing, and radial hole exit is machined with internal thread hydraulic fluid port, is connected with upper outer oil nozzle (15), upper outer oil nozzle
(15) other end and bypass pipe (2) thread connection, the other end and three-way pipe (14) thread connection of bypass pipe (2), middle part intersects
Runner body (22) inner face is machined with the spout hole concentric with positioning hole, and spout hole and the overflow of single cone cyclone (23) are stretched out
Pipe coaxial cooperation simultaneously forms sealing, and radial hole exit is machined with internal thread hydraulic fluid port, is connected with lower outer oil nozzle (29), lower outer oil nozzle
(29) other end and bypass pipe (2) thread connection, the other end and three-way pipe (14) thread connection, three-way pipe of bypass pipe (2)
(14) with upward bypass pipe (2) thread connection.
2. oily-water seperating equipment under the screw bolt well of a kind of deep-well according to claim 1 and high re-injection pressure well, its
It is characterised by：The nearly wall of the flow path structure of turning back (5) is machined with 4 straight-through looping pits (d), with middle hollow duct (f) phase
Logical, straight-through looping pit (d) is communicated with the upper annular fiowpath d that upper outer shell (6) is constituted, on upper annular fiowpath d and upper inner housing (8)
Hold 3 straight-through looping pits (d) of the nearly wall processing of annular fiowpath, the left demifacet in lower end of nearly wall processing to communicate, upper inner housing (8) it is straight
Logical looping pit (d) 3 straight-through looping pits (d) successively downwards with the left demifacet of middle inner housing (10), a left side for lower inner housing (12)
3 straight-through looping pits (d) of demifacet, 3 straight-through looping pits (d) of the left demifacet in top cross-channel body (16) upper end, top are handed over
The fan-shaped hollow duct (e) of epimere half, straight-through looping pit (c) phase in top cross-channel body (16) lower end 3 in distributary road body (16)
It is logical, top cross-channel body (16) the straight-through looping pit (c) in lower end 3 and bipyramid cyclone (17), upper support tube (19) and shell
Lower annular fiowpath connection between body A (18), thus constitutes crude oil liquid and enters the passage before screw pump supercharging device (35) is pressurized.
3. oily-water seperating equipment under the screw bolt well of a kind of deep-well according to claim 1 and high re-injection pressure well, its
It is characterised by：The middle circulation channel (g) 3 straight-through looping pits (h) successively with middle inner housing (10) lower end, lower inner casing downwards
3 straight-through looping pits (h) of the right-half plane of body (12), 3 straight-through looping pits (h) of top cross-channel body (16) first half,
The looping pit straight-through greatly of top cross-channel body (16) lower end is communicated, the looping pit straight-through greatly of top cross-channel body (16) lower end
Communicated with the entrance of bipyramid cyclone (17), thus crude oil liquid enters the logical of water-oil separating swirl-flow devices (36) after composition supercharging
Road.
4. oily-water seperating equipment under the screw bolt well of a kind of deep-well according to claim 1 or 2 and high re-injection pressure well,
It is characterized in that：3 straight-through looping pits of the nearly wall processing of the left demifacet in upper inner housing (8) lower end, with middle inner housing (10)
3 straight-through looping pits (d) of left demifacet communicate, 3 straight-through looping pits (d) of the nearly wall processing of upper inner housing (8) lower end right-half plane
Sealed by middle inner housing (10).
5. oily-water seperating equipment under the screw bolt well of a kind of deep-well according to claim 1 and high re-injection pressure well, its
It is characterised by：Described water-oil separating swirl-flow devices (36) are made up of two-stage cyclones, bipyramid cyclone (17) outlet and single cone
Cyclone (23) entrance is communicated by the tiltedly logical annular channel (k) of the nearly wall of middle part cross-channel body (22).
6. oily-water seperating equipment under the screw bolt well of a kind of deep-well according to claim 1 and high re-injection pressure well, its
It is characterised by：The upper outer oil nozzle (15), lower outer oil nozzle (29) are circumscribed.
7. oily-water seperating equipment under the screw bolt well of a kind of deep-well according to claim 1 and high re-injection pressure well, its
It is characterised by：The upper single-screw (single screw) pump (7), lower single-screw (single screw) pump (13) remaining knot in addition to the rotation direction of screw rod-bushing pair is different
Structure parameter all same, and be arranged symmetrically in the axial direction, outlet is opposite with respect to suction inlet, in the flexible shaft coupling of outlet end
Two screw rotors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710144684.6A CN107060724A (en) | 2017-03-13 | 2017-03-13 | Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710144684.6A CN107060724A (en) | 2017-03-13 | 2017-03-13 | Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107060724A true CN107060724A (en) | 2017-08-18 |
Family
ID=59621640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710144684.6A Pending CN107060724A (en) | 2017-03-13 | 2017-03-13 | Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107060724A (en) |
Cited By (4)
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| CN109469628A (en) * | 2017-09-08 | 2019-03-15 | 中国石油天然气股份有限公司 | It is a kind of can No Load Start hydraulic-driven screw pump lifting device |
| CN110173253A (en) * | 2019-04-30 | 2019-08-27 | 大庆油田有限责任公司 | Down-hole multilevel liquid stream self-rotation high-precision oily-water seperating equipment |
| CN112240193A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multistage oil-water separation and same-well injection-production device in horizontal shaft |
| CN112647925A (en) * | 2020-12-21 | 2021-04-13 | 西安石油大学 | Intermittent reciprocating opening and closing liquid drainage nipple |
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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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| CN206636547U (en) * | 2017-03-13 | 2017-11-14 | 中国石油大学(华东) | Oily-water seperating equipment under the screw bolt well of a kind of deep-well and high re-injection pressure well |
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| CN202165055U (en) * | 2011-01-17 | 2012-03-14 | 中国石油大学(华东) | Same-well underground oil-water separating extraction and injection device with surface driving single-screw pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112240193A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multistage oil-water separation and same-well injection-production device in horizontal shaft |
| CN112647925A (en) * | 2020-12-21 | 2021-04-13 | 西安石油大学 | Intermittent reciprocating opening and closing liquid drainage nipple |
| CN112647925B (en) * | 2020-12-21 | 2022-07-08 | 西安石油大学 | Intermittent reciprocating opening and closing liquid drainage nipple |
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