CN108317091A - Gas-liquid separation device and separation method for submersible electric pump - Google Patents
Gas-liquid separation device and separation method for submersible electric pump Download PDFInfo
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- CN108317091A CN108317091A CN201711443689.5A CN201711443689A CN108317091A CN 108317091 A CN108317091 A CN 108317091A CN 201711443689 A CN201711443689 A CN 201711443689A CN 108317091 A CN108317091 A CN 108317091A
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- electric pump
- submersible electric
- separation device
- liquid separation
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- 239000007788 liquid Substances 0.000 title claims abstract description 73
- 238000000926 separation method Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000003129 oil well Substances 0.000 description 7
- 239000012071 phase Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
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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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- 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
- E21B43/38—Arrangements for separating materials produced by the well in the well
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a gas-liquid separation device and a separation method for an electric submersible pump, wherein the gas-liquid separation device comprises: the separator comprises a separator main body, wherein the separator main body comprises a mandrel, a conical seat and a central pipe from top to bottom, blades are further arranged on the central pipe, a spiral channel which spirally extends along the vertical direction is formed between the blades and the outer wall surface of the central pipe, the central pipe is provided with a constant-diameter part and a tapered part connected to the lower end of the constant-diameter part, the cross section area of the constant-diameter part is constant, and the cross section of the tapered part is gradually reduced from top to bottom; the slips can be matched with the conical seat; the salvaging mechanism is sleeved on the mandrel, and a flow guide channel communicated with the spiral channel is arranged between the salvaging mechanism and the mandrel; and the collecting port of the gas collecting mechanism is close to the upper part of the mandrel and is isolated from the inlet of the electric submersible pump. The gas-liquid separation device and the separation method for the electric submersible pump have better performance.
Description
Technical field
The present invention relates to oil well gas-liquid separation fields, and in particular to a kind of gas-liquid separation device of submersible electric pump and point
From method.
Background technology
Submersible electric pump has the characteristics that discharge capacity is big, lift is high, high degree of automation, and at home and abroad oil field has obtained extensively
Using.When submersible electric pump takes out gas-liquid mixture fluid, gas can occupy centrifugal pump certain space into pump, keep submersible electric pump characteristic bent
Line deviates, and the lift of pump, discharge capacity and efficiency decline, when motor operation current fluctuation aggravate, oil well production is unstable, seriously
When generate gas lock, cavitation erosion phenomena such as, lifting effect can be by serious influence.
Currently, underground gas-liquid separator may be used to reduce the free tolerance into pump in the oil extraction system of submersible electric pump, from
And gas and liquid is made to detach.Gas-liquid separator can pre-process free gas, reduce the free state tolerance into pump, to
Improve electric pump operational efficiency.
Engineering often includes decanter type with gas-liquid separator and rotary at present.Decanter type separator can only generally handle pumping
For entrance gas liquid ratio in 10% well liquid below, separative efficiency only up to reach 37% because its low separation efficiency, occupied space are big,
Be not suitable for using in high gas-liquid ratio oil well.Rotary separator can handle well liquid of the Pump Suction Nozzle gas liquid ratio within 30%, for
Twin-stage gas-liquid separator divides gas efficiency to can reach 50% or more.However, rotary separator segregational load narrow range at this stage, surpasses
Separative efficiency drastically declines after crossing allowed highest gas liquid ratio, and vapour lock occurs when serious, and bulk gas stirs between blade, is broken
It splits, vane stress unevenness and device is caused to shake, shorten stable work time, frequently overhaul.In addition, down-hole liquid flowing is to rotation
Turn separator and generate high resistance, energy consumption drastically increases.
Invention content
In order to overcome the defects of the prior art, an embodiment of the present invention provides a kind of gas-liquid separation of submersible electric pump dresses
It sets and separation method, with preferable performance.
The embodiment of the present application discloses：A kind of gas-liquid separation device of submersible electric pump, including：
Separator main body, the separator main body include mandrel, cone seat, central tube from top to bottom, are gone back on the central tube
It is provided with blade, it is logical that the spiral vertically extended spirally is formed between the blade and the outside wall surface of the central tube
Road, the central tube have permanent diameter portion and are connected to the tapered portion at the permanent diameter subordinate end, the cross-sectional area in the perseverance diameter portion
To be constant, the cross section of the tapered portion is gradually reduced from top to bottom；
Slips, the slips can be adapted to the cone seat；
Salvaging mechanism, the salvaging mechanism are set on the mandrel, are had between the salvaging mechanism and the mandrel
The flow-guiding channel being connected to helical duct；
The collection port of gas collection mechanism, the gas collection mechanism is close in the top of the mandrel, and electric with latent oil
The entrance of pump is isolated.
Preferably, the mandrel, the cone seat and the central tube construct for integral type.
Preferably, 3 times of diameter at a diameter of tapered portion minimum in the permanent diameter portion.
Preferably, it is constant that the cross-sectional area of the blade in the permanent diameter portion, which is arranged,.
Preferably, the cross-sectional area that the blade in the tapered portion is arranged tapers into from top to bottom.
Preferably, the gas collection mechanism includes conical gas collection portion and is connected to the conical gas collection portion
The cross-sectional area of the capillary of upper end, the conical gas collection portion becomes larger from top to bottom.
Preferably, the lower end of the central tube is located at outside blade, and is arcwall face.
Preferably, the lower recess of the salvaging mechanism is connected with the upper ledge of the slips, the mandrel outer wall
It is provided with slip groove, the top of the slips is embedded in slip groove.
Preferably, the sectional area of the helical duct tapers into from bottom to top.
Include such as the gas-liquid separation device of above-mentioned submersible electric pump and latent disclosed herein as well is a kind of oil extraction system
Oily electric pump, the gas collection mechanism are mounted on the submersible electric pump.
Preferably, the capillary of gas collection mechanism of institute is fixed on by clip on the submersible electric pump.
Preferably, the upper end of the capillary of gas collection mechanism of institute extends on the suction inlet of submersible electric pump.
The embodiment of the present application also discloses a kind of submersible electric pump gas-liquid separating method, includes the following steps：
Air pocket in gas-liquid mixture is crushed by the end face of central tube lower end；
The helical duct of tapered portion introduces the broken gas-liquid mixture of air pocket, and under the action of the centrifugal to gas-liquid mixed
Object is detached；
The helical duct in permanent diameter portion makes liquid phase be evenly distributed, and gas is made to enter gas collection mechanism, and liquid is along casing
Inner wall rotation rises.
In conclusion the gas-liquid separation device and method of the submersible electric pump of the present invention have the following advantages：(1) installation side
Just, economical and practical, working depth is adjustable, can be according to deep arbitrary percentage regulation under different electric pumps；(2) package unit without motion zero
Part, stable and reliable operation are excused from a college course that the phase is long, save the additional energy consumption of separator, gas will not be formed in blade path vapour lock and
Vibrations；(3) conical design of separator lower part not only increases flow velocity, can also reduce back pressure influence to greatest extent, ensures enough
Big flow velocity enhances separating effect；(4) gas passage is built jointly by the way of gas collector guiding, capillary conveying,
Pump Suction Nozzle free Gas content below is fundamentally solved, pump efficiency is improved；(5) not by fluid properties and the shadow of gas content
It rings, is adapted to the needs of various gas liquid ratio oil well gas-liquid separation, meets the requirement of high gas-liquid ratio.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above example
Explanation be merely used to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
For the above and other objects, features and advantages of the present invention can be clearer and more comprehensible, preferred embodiment cited below particularly,
And coordinate institute's accompanying drawings, it is described in detail below.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the gas-liquid separation device of the submersible electric pump in the embodiment of the present application；
Fig. 2 is the structural schematic diagram of the separator main body in the embodiment of the present application；
Fig. 3 is the structural schematic diagram of the salvaging mechanism in the embodiment of the present application；
Fig. 4 is the structural schematic diagram of the slips in the embodiment of the present application；
Fig. 5 is the structural schematic diagram of the gas collection mechanism in the embodiment of the present application.
The reference numeral of the figures above：1, separator main body；2, salvaging mechanism；3, slips；4, gas collection mechanism；1-1、
Central tube；1-2, blade；1-3, cone seat；1-4, slip groove；1-5, mandrel；2-1, groove；2-2, fishing neck；2-3, chamfering；2-
4, boss；4-1, capillary；4-2, conical gas collection portion.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig.1, shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the embodiment of the present application discloses a kind of gas-liquid of submersible electric pump point
From device, including separator main body 1, slips 3, salvaging mechanism 2 and gas collection mechanism 4.The separator main body 1 from upper and
Include down mandrel 1-5, cone seat 1-3, blade 1-2, the blade 1-2 are additionally provided on central tube 1-1, the central tube 1-1 with
The helical duct vertically extended spirally is formed between the outside wall surface of the central tube 1-1, the central tube 1-1 has
Permanent diameter portion and the tapered portion for being connected to the permanent diameter subordinate end, the cross-sectional area in the perseverance diameter portion be it is constant, it is described tapered
The cross section in portion is gradually reduced from top to bottom.The slips 3 can be adapted to the cone seat 1-3, to enable the mechanism to pass through
Slips 3 is suspended on casing.The salvaging mechanism 2 is set on the mandrel 1-5, the salvaging mechanism 2 and mandrel 1-5
Between there is the flow-guiding channel that is connected to helical duct.The collection port of the gas collection mechanism 4 is close in the mandrel 1-5's
Upper end can be connected to the flow-guiding channel.
Shown in referring to Figures 1 and 2, specifically, the separator main body 1 includes the superposed core constructed for integral type
Axis 1-5, the cone seat 1-3 positioned at middle part and the central tube 1-1 positioned at lower part.The outer diameter of the mandrel 1-5 is casing inner diameter
1/4.There are three slip groove 1-4 for the radially even arrangement of outer wall of the mandrel 1-5.The upper surface of the mandrel 1-5 is circular arc
Shape end face, and the distance between lower face at the top of cambered surface away from conical gas collection portion 4-2 is 0.3m (rice), to prevent oil pipe bullet
Vibrations when property deformation and pump work.
Referring to Figure 5, the gas collector includes conical gas collection portion 4-2 and is connected to the taper gas
The capillary 4-1 of the upper ends body collection portion 4-2, the cross-sectional area of the conical gas collection portion 4-2 become larger from top to bottom.Institute
It states capillary 4-1 to be fixed on by clip on the outer wall of submersible electric pump lower part, the upper end of the capillary 4-1 extends to latent oil electricity
More than the suction inlet of pump, the gas so as to avoid capillary 4-1 from being collected into causes to disturb to submersible electric pump.That is, the gas
Body collection device is mounted on submersible electric pump.The lower end of the capillary 4-1 passes through internal and external threads with conical gas collection portion 4-2
Connection, the rotation direction of the screw thread and tapered vortex tube blade 1-2 are oppositely oriented, to prevent anti-avulsion button.The conical gas collection portion 4-2
Entrance (bottom of the i.e. described conical gas collection portion 4-2) a diameter of casing diameter 1/5, and conical gas collection portion
The center of 4-2 is located on casing axis.The 1/5 of a diameter of casing inner diameter is mainly the gas volume point for considering fluid-mixing
Number, general boundary are 0.2.
Gas-liquid is isolated by capillary 4-1, in the case where pumping speed is more than stratum and produces liquid speed degree, avoids separation
The gas gone out is again into the possibility of pump.After the invention device, submersible electric pump is significantly dropped with the gas content in casing annulus
It is low, it prevents gas-liquid from mutually pulling, stirring in annular space, keeps gas-liquid separation more abundant, oil well production is more stable.
The diameter of the cone seat 1-3 gradually increases from top to bottom.Cone seat 1-3 outer walls are circular conical surface, and the gradient of circular conical surface
It is identical as the gradient on 3 lower end inner wall inclined-plane of slips.
The top of the central tube 1-1 is permanent diameter portion, and the perseverance diameter portion is in cylindrical shape, and leaf is provided with outside the perseverance diameter portion
Piece 1-2.The 3/4 of a diameter of blade 1-2 maximum gauges in the perseverance diameter portion.The blade 1-2 in the permanent diameter portion, which is arranged, is etc.
Diameter propeller 1-2, external profile diameter are slightly less than casing inner diameter.The lower part of central tube 1-1 is tapered portion, tapered portion diametrically from upper and
Under gradually smaller boss-shaped.The minimum diameter of tapered portion is 1/4 that diameter is blade 1-2 maximum gauges.It is arranged described tapered
Blade 1-2 external profile diameters in portion are tapered together with central tube 1-1, and terminate at lower end arc surface.Blade 1-2 thickness is
0.05m.Preferably, the cross-sectional area of the change rate and tapered portion of the cross-sectional area of the blade 1-2 in the tapered portion is set
Change rate it is identical.
Referring to Figure 1 and Figure 3 shown in, the salvaging mechanism 2 is set on the mandrel 1-5, the salvaging mechanism 2 with it is described
There is the flow-guiding channel being connected to helical duct between mandrel 1-5.The salvaging mechanism 2 includes cylindrical fishing neck 2-2.It beats
Fishing neck 2-2 is socketed on the outer wall of the upper ends mandrel 1-5, and there are three be used for fixing card for the radially even arrangement in lower part of fishing neck 2-2
Watts 3 groove 2-1.The upper and lower side of fishing neck 2-2 is equipped with boss 2-4, has chamfering 2-3, lower end boss on the outside of the boss 2-4 of upper end
2-4 inner-concaves are empty, and chamfering 2-3 is 45 ° on the outside of the boss 2-4 of the upper ends the fishing neck 2-2.
Referring to Fig.1 with described in Fig. 4, the slips 3 is segment shape, and lower end outer wall has slip insert, inner wall to have inclined-plane.Slips
3 upper ends are respectively embedded in three groove 2-1 of fishing neck 2-2, and are embedded in three slip groove 1-4 of mandrel 1-5.It is described
The lower recess of salvaging mechanism is connected with the upper ledge of the slips, and the mandrel outer wall is provided with slip groove, the card
Watt top be embedded in slip groove.The slips 3 is fixed by slips hoop and mandrel 1-5.Preferably, the section of helical duct
Product tapers into from bottom to top, and to make the mixture flowing velocity in helical duct increase, bigger is generated in uphill process
Ram pressure, keep gas-liquid separation more abundant.The present invention also provides a kind of submersible electric pump gas-liquid separating methods, may be used
Above-mentioned apparatus, specifically, this approach includes the following steps：
The lower end for the tapered portion that gas-liquid mixture (various gas liquid ratios, such as high gas-liquid ratio) flows through central tube 1-1 is arc-shaped
It is preliminary to realize the broken of air pocket when end face, and drain into helical duct, using caused by gas-liquid two-phase density variation and rotation
Centrifugal action realizes gas-liquid separation.
Gas-liquid mixture is behind the permanent diameter portion of central tube 1-1 and the guiding role being disposed thereon, gas-liquid distributed mutually
Uniformly, steady to rise.Gas phase is placed in the middle, is upwardly into conical gas collection portion 4-2, along capillary 4-1 under low pressure effect
Rise, capillary 4-1 extends to Pump Suction Nozzle or more, and discharge gas enters oil jacket annular space, to reduce into pump gas liquor ratio.Liquid phase
Outside, it rotates and rises along internal surface of sleeve pipe, the suction inlet of submersible electric pump is entered around conical gas collection portion 4-2.
A kind of high gas-liquid ratio oil well submersible electric pump spiral gas-liquid separation method, comprises the following steps：
The dispenser for connecing gas-liquid separation device when dispensing using steel wire work series winding, transfers to designated position in casing, slowly
Slowly steel wire is above carried, so that slips 3 is strutted outward under the upward pressure effect of cone seat 1-3, and stuck realized in internal surface of sleeve pipe sets.
Continue above to carry steel wire, cuts the pin on dispenser, pit shaft is strung out with steel wire tool.Capillary 4-1 and conical gas are received
Collection portion 4-2 is whole with electric submersible pump tripping in pit shaft, and the lower face of conical gas collection portion 4-2 prevents oil away from mandrel 1-50.3m with this
Vibrations when tubular elastic deformation and pump work.
Gas-liquid mixture flows through the arc-shaped end face in the lower parts central tube 1-1 when production, and air pocket is crushed and is guided to blade
Helical duct between 1-2, with the reduction of flow section, flow velocity increases, and utilizes centrifugal action caused by gas-liquid density variation
Two phases were separated.In helical duct end, gas phase is placed in the middle, and gas, which flows through blade 1-2, rushes in conical gas collector and by capillary
Pipe 4-1 is delivered on Pump Suction Nozzle, and liquid phase outside, rises along pipe wall screw, and realization is reduced into pump gas liquor ratio, improves pump efficiency.
Capillary 4-1 and conical gas collector rise with submersible electric pump when salvaging, connect blind hammer using steel wire series winding, transfer
To gas-liquid separation device setting position and downward jarring, mandrel 1-5 moves down and cuts salvaging pin, makes slips 3 and cone seat
1-3 is detached from unfreezing.Fishing socket capture fishing neck 2-2 is reused, tool string is above carried and rises outside pit shaft by gas-liquid separation device.
In conclusion the gas-liquid separation device and method of the submersible electric pump of the present invention have the following advantages：(1) installation side
Just, economical and practical, working depth is adjustable, can be according to deep arbitrary percentage regulation under different electric pumps；(2) package unit without motion zero
Part, stable and reliable operation are excused from a college course that the phase is long, save the additional energy consumption of separator, gas will not form vapour lock in the channels blade 1-2
And vibrations；(3) conical design of separator lower part not only increases flow velocity, can also reduce back pressure influence to greatest extent, ensure foot
Enough big flow velocitys, enhance separating effect；(4) gas is built jointly by the way of gas collector guiding, capillary 4-1 conveyings
Channel fundamentally solves Pump Suction Nozzle free Gas content below, improves pump efficiency；(5) not by fluid properties and gas content
Influence, be adapted to the needs of various gas liquid ratio oil well gas-liquids separation, meet the requirement of high gas-liquid ratio.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above example
Explanation be merely used to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (13)
1. a kind of gas-liquid separation device of submersible electric pump, which is characterized in that including：
Separator main body, the separator main body include mandrel, cone seat, central tube from top to bottom, are also set up on the central tube
There is blade, the helical duct vertically extended spirally, institute are formed between the blade and the outside wall surface of the central tube
Stating central tube has permanent diameter portion and is connected to the tapered portion at the permanent diameter subordinate end, and the cross-sectional area in the perseverance diameter portion is constant
, the cross section of the tapered portion is gradually reduced from top to bottom；
Slips, the slips can be adapted to the cone seat；
Salvaging mechanism, the salvaging mechanism are set on the mandrel, are had between the salvaging mechanism and the mandrel and spiral shell
Revolve the flow-guiding channel of channel connection；
Gas collection mechanism, the collection port of the gas collection mechanism are close in the top of the mandrel, and with submersible electric pump
Entrance is isolated.
2. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that the mandrel, the cone
Seat and the central tube construct for integral type.
3. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that the diameter in the perseverance diameter portion
It is 3 times of diameter at the tapered portion minimum.
4. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that setting is in the permanent diameter portion
On blade cross-sectional area be it is constant.
5. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that be arranged in the tapered portion
On the cross-sectional area of blade taper into from top to bottom.
6. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that the gas collection mechanism
Including conical gas collection portion and it is connected to the capillary of conical gas collection portion upper end, the conical gas collection portion
Cross-sectional area become larger from top to bottom.
7. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that the lower end of the central tube
Outside blade, and it is arcwall face.
8. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that under the salvaging mechanism
Portion's groove is connected with the upper ledge of the slips, and the mandrel outer wall is provided with slip groove, the top insertion of the slips
In slip groove.
9. the gas-liquid separation device of submersible electric pump according to claim 1, which is characterized in that the helical duct is cut
Area tapers into from bottom to top.
10. a kind of oil extraction system, which is characterized in that include the gas-liquid of submersible electric pump as described in any one of claim 1 to 9
Separator and submersible electric pump, the gas collection mechanism are mounted on the submersible electric pump.
11. oil extraction system according to claim 10, which is characterized in that the capillary of gas collection mechanism of institute passes through clip
It is fixed on the submersible electric pump.
12. oil extraction system according to claim 10, which is characterized in that prolong the upper end of the capillary of gas collection mechanism of institute
It extends on the suction inlet of submersible electric pump.
13. a kind of submersible electric pump gas-liquid separating method, which is characterized in that include the following steps：
Air pocket in gas-liquid mixture is crushed by the end face of central tube lower end；
The helical duct of tapered portion introduces the broken gas-liquid mixture of air pocket, and under the action of the centrifugal to gas-liquid mixture into
Row separation；
The helical duct in permanent diameter portion makes liquid phase be evenly distributed, and gas is made to enter gas collection mechanism, and liquid is along internal surface of sleeve pipe
Rotation rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711443689.5A CN108317091B (en) | 2017-12-27 | 2017-12-27 | Gas-liquid separation device and separation method for submersible electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711443689.5A CN108317091B (en) | 2017-12-27 | 2017-12-27 | Gas-liquid separation device and separation method for submersible electric pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108317091A true CN108317091A (en) | 2018-07-24 |
| CN108317091B CN108317091B (en) | 2020-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117989137A (en) * | 2024-04-03 | 2024-05-07 | 山东高原油气装备有限公司 | Submersible centrifugal pump for marine oil-gas drill |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2124929A (en) * | 1982-07-22 | 1984-02-29 | Trw Inc | Liquid gas separator |
| US6113675A (en) * | 1998-10-16 | 2000-09-05 | Camco International, Inc. | Gas separator having a low rotating mass |
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| CN117989137A (en) * | 2024-04-03 | 2024-05-07 | 山东高原油气装备有限公司 | Submersible centrifugal pump for marine oil-gas drill |
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