CN102389653A - Downhole oil-water-solids separation - Google Patents
Downhole oil-water-solids separation Download PDFInfo
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- CN102389653A CN102389653A CN2011101858783A CN201110185878A CN102389653A CN 102389653 A CN102389653 A CN 102389653A CN 2011101858783 A CN2011101858783 A CN 2011101858783A CN 201110185878 A CN201110185878 A CN 201110185878A CN 102389653 A CN102389653 A CN 102389653A
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Images
Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
- B67B7/00—Hand- or power-operated devices for opening closed containers
- B67B7/92—Hand- or power-operated devices for opening closed containers by breaking, e.g. for ampoules
-
- 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
- E21B43/35—Arrangements for separating materials produced by the well specially adapted for separating solids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T225/00—Severing by tearing or breaking
- Y10T225/30—Breaking or tearing apparatus
- Y10T225/371—Movable breaking tool
Abstract
A technique facilitates separating fluids and solids and handling the separated solids downhole. A separator system is provided with a separator having a well fluid inlet, an oil stream passage, a water stream passage, and a solids passage. The separator operates to separate well fluid into substantially oil, water, and solids components and those components are directed to the corresponding passages. A flow restrictor may be used in cooperation with the separator to facilitate separation of the well fluid components.
Description
The application based on and require the U.S. Provisional Application No.:61/359 that submitted on June 30th, 2010,875 priority, this provisional application is included in this by reference.
Technical field
The present invention relates to a kind of downhole hardware, a kind of in the down-hole method and a kind of method that is equipped with downhole fluid and solid piece-rate system of separation of the fluid and solid.
Background technology
Oil well production can relate to pumping comprise part oil and part water, promptly as the well fluids of oil/aqueous mixtures.When the oil of oil well is depleted, has the water of bigger percentage, and be produced to ground subsequently.The water of " production " can reach total more than 80% of well fluids volume of producing sometimes, thereby produces serious operational issue.For example, the water of producing possibly need in the processing and/or the subsurface reservoir that reinjects, to dispose water and to help to keep reservoir pressure.The processing of the water of producing and disposal cost are very high.
A kind of mode of tackling these problems is through employing downhole hardware separating oil and water, and will divide the water of managing out to re-inject, thereby reduce undesirable water of producing ground.Reduce the power that the water of producing ground can make that reduction is required, reduce hydraulic slip and simplify ground installation.And many and water treatment cost related can reduce or save.
Yet successfully separating oil and water and then injection water are quite thorny in the down-hole, and are a kind of efficient and the variable of feasibility and sensitive procedures of factor with this operation of many influences.For example, the oil of each well/water ratio can be different, and can change significantly along with the life-span of well.Required injection pressure also can change along with the life-span of well.For example, the required injection pressure of isolated water often increases along with the time.
When well fluids includes, be blended in solid in the well fluids, for example during husky and other particles, other problem can occur.Solid is often heavy than oil, and goes out from elutriation.Yet the existence of the solid in the current can produce complicated downhole conditions, for example blocks.In some application scenarios, solid separates and often blocks the position that re-injects with the current that re-injected.Solids ratios in well fluids/water also can be along with the time changes, and this can produce bigger difficulty when the down-hole treatment solid.
Summary of the invention
In general, the many aspects that leave of downhole oil-water-solids provide a kind of be used for separation of the fluid and solid and the system and method for handling the solid that has been separated in the down-hole.This technical scheme utilization has the piece-rate system of separator, and said separator has well fluids inlet, oil stream output channel, current output channel and solid output channel.Separator is used for the well fluids substantial separation is become oil, water and solid constituent, and these components are directed into corresponding passage.Current limiter can be used with separator, so that separate the well fluids component.
Description of drawings
Below, will some embodiment that downhole oil-water-solids leaves be described referring to accompanying drawing, wherein, identical Reference numeral is represented components identical, accompanying drawing comprises:
Fig. 1 is the front view according to the well system of the submersible electric power pumping system of the use of an embodiment and piece-rate system cooperation;
Fig. 2 is the cutaway view according to an example of the piece-rate system of an embodiment;
Fig. 3 is the cutaway view of the part of well system, shows an example according to the current limiter of an embodiment;
Fig. 4 is and the similar cutaway view of Fig. 3, but shows the current limiter that removes from the said part according to the well system of said embodiment;
Fig. 5 is and front view according to an optional example of the well system of the piece-rate system of optional embodiment combination;
Fig. 6 is the cutaway view according to an example of the direction modifier that can be used for the well system of embodiment;
Fig. 7 is according to a cutaway view embodiment and the direction modifier current limiter combination that is used for the well system;
Fig. 8 is the cutaway view according to an example of the current limiter system of the well system that can be applicable to of an embodiment;
Fig. 9 is the cutaway view according to the current limiter system that comprises a sensor or a plurality of sensors of embodiment; And
Figure 10 is the cutaway view according to another example of the piece-rate system of an embodiment, and wherein, well fluids is divided into three kinds of components, and said three kinds of components mainly comprise oil, water and solid.
The specific embodiment
In the following description, numerous details have been provided, so that understand the present invention.Yet, those skilled in the art will appreciate that the present invention also can implement under the situation that does not possess these details, and can carry out numerous variations or modification described embodiment.
In specification and claims, term " makes progress " and " downwards ", " on " and D score, " up " and " downwards ", " upper reaches " and " downstream ", " top " and " below " and other expression set points or point element above or below the similar terms of relative position in this specification, be used for more clearly describing some embodiments of the present invention.Yet for equipment that is used for inclined shaft or horizontal well and method, if suitable, this term can refer to from left to right, from right to left or other relations.
Embodiment described here is usually directed to mechanical oil production system, for example, and the mechanical oil production system relevant with the oil gas well.Said embodiment comprises and is used to separate the well fluids component, for example the system and method for oil, water and solid.For example, an embodiment relates to downhole oil/water/solids and leaves and relate to the back pressure that management and control is used to control the separation of well fluids component.A kind of oil of controlling for example applies through adjusting with the mode of separating of water that oil supply flows and/or the back pressure of current is carried out.Back pressure can be through regulating Current limited Control, to realize the oil stream that withdraws from the well fluids component separator and/or the expectation throttling of current.Except the well fluids component was separated, embodiment described here related to and is designed to the expectation throttling is provided, be the equipment of back pressure to output stream.The throttling amplitude can closed (not having to flow) to variation between the wide opening (fully flowing) fully according to the oil/water/solids content of well fluids.
The control back pressure with relevant mobile can be relevant with respect to the azimuth elevation ground of production area (the aboveground or downhole of production area to water filling district) with the water filling district.Some difference between these two orientation relate to aboveground injection (injecting uphole) and down-hole and inject (injecting downhole), and in said aboveground injection, device can the single operation throttling and led to the oil pipe annular space; Inject in said down-hole; Device possibly promptly, need receive from oil pipe and inject stream " online " throttling of flowing; This stream is carried out throttling, then this stream is turned back to another oil pipe of advancing towards the water filling district.In some applications, the throttling passage of current limiter/or the diameter of opening can be in about 0.125 inch to 1.0 inches scope.
Please referring to Fig. 1, well system 20 is illustrated as and is deployed in the well 22 generally.In this embodiment, well system 20 comprises submersible electric power pumping system 24, the submersible pump 28 that said submersible electric power pumping system 24 has submersible motor 26 and driven by submersible motor 26.Submersible electric power pumping system 24 can comprise multiple other members, for example pump opening or inlet port 30 and motor protector 32.Additivity ground, the well system 20 that illustrates also comprises the separator 34 that is designed to separate the well fluids component, for example whizzer or cyclone separator.For example, separator 34 can be designed to separation of the fluid component, for example oil and water, fluid and solid constituent, for example water and particle, or other combination of components, for example oil, water and solid.Separator 34 can be connected in the well system 20 in the position above multiple position, the submersible pump 28 that for example illustrating.Yet separator 34 also can be positioned on the upper reaches of submersible pump 28, crosses pump 28 with the restriction efflux of solids.
In the example that illustrates, well system 20 is placed on the down-hole of oil gas well, for example in the sleeve pipe 36 of well.When being placed on desired locations place, down-hole, submersible motor 26 can be supplied with power, to drive submersible pump 28 and separator 34.In the operating process of this embodiment, well fluids is inhaled in the pump 28 through opening 30 and is pumped in the separator 34.Separator 34 quickens and drives the well fluids mixture along circular path; Thereby; Utilize the centrifugal force material that density is bigger, for example water and solid to navigate to farther radial position, and the fluid that density is less, for example oil navigate to the position more approaching with center of rotation.In this example; Oil stream advances to direction modifier 38 with current from separator 34 discharges and along different paths individually; Said direction modifier changes the direction of current; And, for example oil is flowed to the aboveground ground assembling position that is directed to simultaneously through oil pipe 40 with stratum around the current injection.Separator 34 can be designed to separating oil, water and solid (referring to Figure 10), and in this case, the solid constituent of well fluids is directed to desired locations by direction modifier 38.Should be pointed out that separator 34 also can be used for multiple position under the situation that has or do not have direction modifier 38.For example, separator 34 can be used for separating oil, water and solid constituent, and then solid and oil stream are made up the ground assembling position of delivering to expectation to give, thereby, avoid stopping up the water filling district.
About current, oil stream and/or efflux of solids, be meant the stream that roughly has the concentration of water, oil and solid respectively from the output of separator 34.In other words, corresponding stream can comprise other well fluids components of a part, can not be pure and only comprise water, oil or solid.According to the certain applications occasion, well system 20 can comprise other various members, for example packer 42 and 44.
Fig. 2 shows the cutaway view of an example of separator 34, and in this case, said separator is a cyclone.The well fluids mixture is driven through the well fluids inlet 45 of separator 34 and gets in the chamber 46 of separator portion or separator 34, the for example spin chamber.The component of well fluids is separated through current divider 48, and said current divider 48 limits pipeline or the passage that is used for transporting from separator portion 46 separated well fluids component.For example, passage can comprise oily passage or the pipeline 50 and aquaporin or pipeline 52 of the outlet of serving as separator chamber 46.Current divider 48 also can be isolated other component from well fluids, solid for example, and said solid transmits along independent solid tunnel or pipeline.As shown in the figure, oily passage 50 is being provided with in partially with respect to aquaporin 52 in the radial direction.Back pressure optionally applies oil supply stream, current and/or efflux of solids, to influence separation process.For example, when shunting had the well fluids of oil of high percentage, the back pressure that acts on current through aquaporin 52 can be improved separating resulting.For the well fluids of the water with higher percent, the higher back pressure that acts on oil stream through oily passage 50 can be improved separating of oil and water similarly.Generally, identical back pressure principle is applicable to eddy flow or cyclone.
Referring to Fig. 3, show the cutaway view of the piece-rate system 54 of another type generally, said piece-rate system has separator 34, and this separator is used for the well fluids component is divided into the stream that for example flows through oily passage 50 and aquaporin 52.Should be pointed out that separator 34 also can be designed to isolate solid constituent, said solid constituent is carried along separate duct then, and this will be described in more detail below.In Fig. 3, arrow 56 shows the path of expression oil stream, and arrow 58 shows the path of expression current.In this example, current limiter 60, for example throttle ele-ment are positioned in the aquaporin 52.Yet, substituting ground, current limiter 60 also can be placed in the oily passage 50, or other current limiter 60 can be placed in the oily passage 50 and makes in aquaporin and oily passage, all to have current limiter.In this embodiment, current 58 are in aboveground inflow current limiter 60.
Under some application scenarios, current limiter 60 comprises throttle orifice spare 62, and said throttle orifice spare 62 has the throttle orifice 64 of size variable, makes need not change the size that current limiter 60 changes throttle orifice 64.As an example, the size of throttle orifice can mechanically be regulated on ground, or through via conveyer 68 for example cable, steel wire, the coiled tubing instrument 66 of transferring carry out.In other are used; Throttle orifice spare 62 can have adjustable throttle orifice 64; Said adjustable throttle orifice 64 can be regulated via the hydraulic regulation of guiding to the down-hole or through motor through fluid pressure line, and said motor is through controlling from ground or from the signal of telecommunication that downhole controller sends.
Shown in Fig. 3 was further, check-valves 72 was arranged in oily passage 50 and/or aquaporin 52.Check-valves 72 can be used for anti-fluid and retracts in the separator 34 with aquaporin 52 through oily passage 50.Utilize check-valves 72 to stop this possible backflow prevention to damage separator 34.
Referring to Fig. 1, packer 42,44 can be used for isolating a plurality of zones of well along well system 20 once more.As an example, packer 42 and 44 be illustrated as with water to re-inject with the approaching stratum of direction modifier 38 in zone and well fluids from the zone isolation of the stratum suction of lower packet 44 belows.Packer construction is effectively with pump inlet port 30 and the fluid isolation that re-injects.Alternatively, when water injected above packer 42 or below the packer 44 once more, packer 44 can be positioned at submersible pump 28 belows, thereby, will produce the zone isolation on the zone and the stratum that water injects of well fluids fully.Can use multiple packer construction, produce isolation as long as they are positioned between the fluid of the fluid produced and injection.
Referring to Fig. 5, show a kind of alternate configurations generally, current are re-injected the expectation water filling district 76 that is positioned at 78 belows, production area to show.Submersible motor 26, pump 28 and separator 34 can be connected with the similar mode of describing referring to Fig. 1 of mode, and direction modifier 38 is connected to the uphole of separator 34.Direction modifier 38 is connected to pipeline 80, and said pipeline 80 extends to the down-hole, and the fluid that is changed direction with guiding is through lower packet 82.Lower packet 82 is separated production area 78 with the water filling district 76 that is positioned at packer 82 belows.In this embodiment, current are advanced through pipeline 80 and tail pipe assembly 84.Tail pipe assembly 84 extends through lower packet 82 and gets in the water filling district 76, so that can re-inject water component.
Fig. 6 shows the more detailed cutaway view of an embodiment of direction modifier 38.Similarly, Fig. 7 shows and is positioned at the more detailed cutaway view of an embodiment of the direction modifier 38 of current limiter 60 combination in the current limiter container cavity 86.Current limiter container cavity 86 is configured to receive current limiter 60.In this special example, aquaporin 52 is positioned at the outside of oily passage 50 on radially based on centrifugal oil/separated form water.Oil passage 50 extends through the direction modifier and to aboveground extend past direction modifier, is connected with oil pipe 40, for example production tube/coiled tubing up to it to modifier 38 from downhole.Aquaporin 52 extends to the direction modifier 38 from direction modifier 38 belows.Aquaporin 52 can be incorporated in the water channel 88, and said water channel 88 makes aquaporin 52 be connected with current limiter container cavity 86.In the illustrated embodiment, the direction of water channel 88 edges and aquaporin 52 approximate vertical is extended, thereby, current flow through zig zag, for example 90 ° of turnings.Yet, the variable-angleization of turning, and in some applications, it can turn less, and for example 45 °, or it is bigger to turn, and for example 135 °.Injection channel 90 is connected between current limiter container cavity 86 and suitable passage, the for example pipeline 80, so that the water component of well fluids is directed to the water filling district 76 of expectation.
Referring to Fig. 8, show an embodiment of current limiter 60 in addition.In this embodiment, current limiter 60 comprises body 92, limits inner cavity chamber 94 and lower inner cavity chamber 96 in the said body.Last inner cavity chamber 94 is separated by constriction, for example current limliting throttle orifice spare 62 with lower inner cavity chamber 96, and said current limliting throttle orifice spare has flow channel/throttle orifice 64, and whereby, fluid flows by throttling.Throttle orifice spare 62 and current limiter body 92 can be same parts or two various parts being assembled together.Whole current limiter 60 and/or current limiter throttle orifice spare 62 can be that fix or removable according to well fluids separating application occasion.
In the illustrated embodiment, the diameter of the throttle orifice 64 of throttle orifice spare 62 is littler than the diameter of attending inner cavity chamber 94 or lower inner cavity chamber 96, but the diameter of throttle orifice 64 also can be substantially the same with the diameter of last inner cavity chamber 94 or lower inner cavity chamber 96.In addition, one or more passages 98 are arranged in the body 92 of current limiter, and will go up the regional hydraulic communication of inner cavity chamber 94 and current limiter 60 outsides.Another path 10 0 is positioned on the downhole end of current limiter 60, and the flow path that can be communicated with the bottom of throttle orifice spare 62 through lower inner cavity chamber 96 is provided.
In the time of in current limiter 60 is positioned at current limiter container cavity 86, passage 98 can make fluid get into through passage 98 from water channel 88 and attend the inner cavity chamber 94.Fluid flows through the throttle orifice 64 of throttle orifice spare 62 then and flow in the lower inner cavity chamber 96.Fluid, for example water flow through path 10 0 and flow out current limiter 60 from lower inner cavity chamber 96, to be used for re-injecting district, the for example water filling district 76 of expectation.A plurality of seal 102, for example seal with O ring part can be installed around body 92, form sealing with the inner surface with current limiter container cavity 96.In various application occasions, current limiter 60 can remove.Substituting ground, additivity ground, it is removable or adjustable that throttle orifice spare 62 can be configured to, so that can regulate the size of flow channel 64.Should be pointed out that current limiter 60 can have many internal structures, said internal structure can make the expectation current limliting/throttling of convection cell be convenient to separate the well fluids component.
When removable, current limiter 60 can comprise connector 104, and said connector 104 is designed to be convenient to engage with instrument 66, takes out from current limiter container cavity 86 so that put into 86 neutralizations of current limiter container cavity.As said before, instrument 66 can be connected to multiple conveyer 68, for example cable, steel wire or coiled tubing.
In many application, the isolation technics of application depends on the parameters/characteristics relevant with well fluids with selected current limiter, for example the well fluids contents.For example, the contents of well fluids can be used for confirming to separate, produce and re-inject the appropriate technology of various well fluids components.In some applications, sensor 106 can be positioned on the down-hole, and to confirm the parameter of selected well fluids, for example oil/the water in the well fluids/solids ratios is as shown in Figure 9.Data from sensor 106 can for example be passed through the electric wire transmission of electric signals in many ways to aboveground transmission, through optical signal transmission fiber, and via Radio Transmission Technology transmission radio signal, acoustical signal, and other suitable data transmission technologys.Substituting ground, signal can be transferred to down hole processor 108.Down hole processor 108 can be used for to the motor that for example is connected with adjustable throttle orifice spare 62 instruction being provided, to set a certain orifice dimensions or to carry out other down-hole functions.According to the application scenario, sensor 106 can be positioned at outer and identical with well fluids inlet port 30 height place, the aboveground position, separator 34 of the outer and well fluids inlet port 30 of the down well placement, separator 34 of the outer and well fluids inlet port 30 in the downstream, separator 34, direction modifier 38, current limiter 60, separator 34 of the well fluids inlet port of separator 34, the downstream of well fluids inlet port 30, the upper reaches and other suitable positions of separator.
Referring to Fig. 9, show an example of current limiter 60 once more, said current limiter has the sensor 106 that is arranged in inner cavity chamber 94.In a substituting embodiment, sensor 106 can be arranged in lower inner cavity chamber 96; Or a plurality of sensors can be arranged in inner cavity chamber, lower inner cavity chamber and/or other desired locations places.According to the information of the relevant well fluids of expecting to gather, sensor 106 can be designed to the multiple parameter of sensing, for example temperature, flow rate, pressure, viscosity, oil/water ratio or other expectation parameters.Additivity ground, sensor or a plurality of sensor 106 can use with 110 cooperations of remote measurement pick device, and said remote measurement pick device 110 is integrated in the direction modifier 38 or another suitable member of well system 20.Sensor 106 can be via suitable telemetry system, for example electrically contact or " short pass " telemetry system is communicated by letter with down hole processor 108 or another suitable data gathering system.As previously mentioned, the size that the information that obtains from sensor 106 also can be used for regulating throttle orifice 64.For example, throttle orifice spare 62 can comprise governor motion 111, and said governor motion can machinery, hydraulic pressure, electricity or other modes are regulated.In one example, instrument can be transferred on suitable conveyer 68, so that mechanically activate governor motion 111, thus the size of change throttle orifice 64.
Referring to Figure 10, show another embodiment of separator 34 and piece-rate system 54 generally.In this embodiment, separator 34 is designed to well fluids is separated into other component.For example, separator 34 can be designed to well fluids is separated into oil, water and solid, and particle for example is to provide useful separation and production result.A factor in the long-term successful Application of downhole fluid isolation technics is to keep to the water filling district, for example distinguishing 76 injection rate.In production operation, the reduction of injection rate can be by after oil and separated form water, being carried to the water filling district, for example distinguishing 76 solid, for example particle and cause.Gathering of solid on the Shamian Island in water filling district can reduce injection rate.As far as possible closely with injection ratio and the actual the same continued operation that initial injection ratio can be of value to the downhole fluid piece-rate system that remains longways.Production can be through being limited in water filling district place deposition by oneself amount of solid or combine with the raising the output intervening measure of water filling district improve.
The solid discharge that the embodiment of the separator 34 shown in Figure 10 is designed to provide other flows.This stream can be used for guide solids is left water filling district 76.In some application scenarios, solid discharge stream can make up with the oil ingredient that has been produced of well fluids once more, does not have the injection of solid current basically so that stay.
As above in the face of the description of separator 34, separating of oil ingredient, water component and solid constituent can be through rotating dynamic separator, for example cyclone separator or whizzer, and the power of utilizing rotation to produce realizes according to the Density Separation principle.When well fluids was rotated, heavier phase/component was split into outer radius of gyration place.For example, heavier solid can be split into the radial outside zone, and lighter water is split into zone line, and lighter oil is split into than the zone near center of rotation.The oil ingredient at this radial center place (possibly have some residual water and/or solids) is discharged as producing stream.
Please once more referring to embodiment shown in Figure 10, separator 34 comprises solid tunnel 112, and the efflux of solids with high solid concentration discharges through said solid tunnel.As shown in the figure, solid tunnel/floss hole 112 is positioned at radially outer partially position with respect to aquaporin 52 and oily passage 50.When flowing into current divider 48, passage 50,52 and 112 serves as the outlet of separator region 46.In this example, solid is the heaviest component, and eddy flow/centrifugation is separated to solid (having as some water that carry fluid) radius of the outermost of separator portion 46.As previously mentioned, oil is the lightest, and is split into center of rotation, to produce oil stream.Most of water is split into the midway between oil ingredient and the solid constituent, and does not have solid basically.Basically there are not these current of solid can be discharged into the water filling district of expectation, for example water filling district 76 via above-mentioned technology.Re-inject the possibility that current avoid blocking water filling district 76 at 76 places, water filling district, thereby avoid damaging the water filling district.The component of the outermost of well fluids is to contain the solid constituent of a high proportion of solid, and this solid constituent can advance to combination zone 114 again, and the oil stream combination once more of producing stream with the conduct in the oil pipe 40 for example.
In operation, in submersible pump 28 or another suitable pump of well fluids mixture through pumping system 24 separator chamber 46 that is driven to separator 34, the for example eddy flow/centrifugal chamber.Well fluids flows in the separator portion 46 of separator 34 through well fluids inlet 116.In separator portion 46, the component of well fluids is separated into oil, water and solid constituent, and said oil, water and solid constituent mainly comprise oil, water and solid respectively.The stream that is mainly oil, water and solid is divided into component stream through current divider 48 then, and corresponding component stream is advanced through corresponding oily passage 50, aquaporin 52 and solid tunnel 112.The well fluids component can be directed into the suitable flow path in downstream through corresponding oily flow export 118, water export 120 and the solid outlet 122 of current divider 48.Aquaporin 52 is provided with respect to oily passage 50 is radially outer partially, and solid tunnel 112 is provided with respect to aquaporin 52 is radially outer partially.As an example, oily passage 50, aquaporin 52 and solid tunnel 112 can be the form of concentric pipe, and said concentric pipe is directed to corresponding well fluids component the desired locations in downstream.For example, component stream can be directed into suitable direction modifier 38 and/or pass through suitable current limiter 60.
As above in the face of the description of various well system embodiments, the separation of well fluids component, for example oil, water and can improve through controlling the back pressure that acts on the various well fluids component stream separating of solid constituent.In many application scenarios, the back pressure of expectation can realize through the removable current limiter that is arranged in oil/efflux of solids and/or the current, removable throttle orifice spare and/or adjustable throttle orifice are provided.Yet for the various combinations of well fluids component stream, back pressure multiple device capable of using produces, to realize the production result of expectation.Current limiter for example can be arranged in oil/efflux of solids, oil ingredient stream, water component stream and/or the solid constituent stream.
Although only described some embodiments of the present invention above in detail, it will be appreciated by those of ordinary skill in the art that do not breaking away from fact under the situation of instruction of the present invention, can carry out many modifications.Therefore, this modification also is included in the scope of the present invention of claims qualification.
Claims (20)
1. downhole hardware comprises:
Piece-rate system, said piece-rate system has:
Separator, said separator comprises well fluids inlet, oil flow channel, water stream channel and solid tunnel; And
Be positioned the removable current limiter at least one passage in water stream channel, oil flow channel or the solid tunnel, so that separate the well fluids component.
2. downhole hardware as claimed in claim 1 is characterized in that removable current limiter has fixing throttle orifice spare, and said fixing throttle orifice spare has flow channel, and the size of said flow channel changes through changing current limiter.
3. downhole hardware as claimed in claim 1 is characterized in that removable current limiter has removable throttle orifice spare, and said removable throttle orifice spare has flow channel, and the size of said flow channel changes through changing removable throttle orifice spare.
4. downhole hardware as claimed in claim 1 is characterized in that said downhole hardware also comprises the pumping system with submersible pump, and wherein, water stream channel leads in the well in the position of more being partial to the down-hole than submersible pump.
5. downhole hardware as claimed in claim 1 is characterized in that, removable current limiter can remove through the downhole tool that is transmitted to the down-hole by conveyer.
6. downhole hardware as claimed in claim 1 is characterized in that said separator is a cyclone separator.
7. downhole hardware as claimed in claim 1 is characterized in that said separator is a whizzer.
8. downhole hardware as claimed in claim 1 is characterized in that piece-rate system also comprises the sensor of the parameter of sensing streaming flow.
9. downhole hardware as claimed in claim 8 is characterized in that, said sensor is positioned at the downstream of well fluids inlet.
10. downhole hardware as claimed in claim 8 is characterized in that said sensor is positioned at separator.
11. downhole hardware as claimed in claim 8 is characterized in that, said sensor is positioned at the upper reaches of separator.
12. downhole hardware as claimed in claim 1 is characterized in that, removable current limiter has throttle orifice spare, and said throttle orifice spare has the throttle orifice that optionally changes.
13. one kind in the down-hole method of separation of the fluid and solid, said method comprises:
Piece-rate system is put into the down-hole; Said piece-rate system comprises separator; Said separator has well fluids inlet, oil stream output channel, current output channel and solid output channel, and said piece-rate system also comprises the current limiter container cavity that is arranged in oil stream output channel or current output channel;
Confirm the parameter of down-hole well fluids;
Select degree of flow restriction based on the parameter of confirming, and select corresponding current limiter; And
The current limiter of selecting is placed in the said current limiter container cavity.
14. method as claimed in claim 13; It is characterized in that said method also comprises: through when separator is in the down-hole from separator remove current limiter, the different current limiter that when separator remains on the down-hole, will have different throttle orifices then puts into separator and changes current limliting.
15. method as claimed in claim 13 is characterized in that, said definite step comprises: utilize the downhole sensor in the piece-rate system to confirm.
16. method as claimed in claim 15 is characterized in that, said method also comprises sensor is positioned in the current limiter.
17. a method that is equipped with downhole fluid and solid piece-rate system, said method comprises:
Structure has the separator of the separating part that is communicated with fluid intake; Said separating part also is communicated with current divider, and said current divider has oil flow channel, with respect to the oil flow channel water stream channel of outside fix and with respect to the water stream channel solid tunnel of outside fix partially radially partially radially; And
The current limiter that location and separator are used is so that can optionally control separating of water and oil.
18. method as claimed in claim 17 is characterized in that, said method also comprises: separator is deployed in the well toward the down-hole; And separating oil, water and solid, so that respectively through oil flow channel, water stream channel and solid tunnel discharging.
19. method as claimed in claim 18 is characterized in that, said method also comprises: use the pumped downhole system that isolated oil pump is delivered to the ground location place.
20. method as claimed in claim 19 is characterized in that, said method also comprises: above the pumped downhole system, isolated solid is injected in the isolated oil with returning once more; And with isolated Solid Conveying and Melting to ground location.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35987510P | 2010-06-30 | 2010-06-30 | |
| US61/359,875 | 2010-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102389653A true CN102389653A (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101858783A Pending CN102389653A (en) | 2010-06-30 | 2011-06-30 | Downhole oil-water-solids separation |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20120006543A1 (en) |
| CN (1) | CN102389653A (en) |
| RU (1) | RU2531984C2 (en) |
| WO (1) | WO2012005889A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111712614A (en) * | 2018-02-15 | 2020-09-25 | 斯皮尼克斯私人有限公司 | Method and apparatus for removing particles from a fluid |
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| WO2015035509A1 (en) * | 2013-09-13 | 2015-03-19 | 1784237 Alberta Ltd. | Systems and apparatuses for separating wellbore fluids and solids during production |
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| US10280727B2 (en) | 2014-03-24 | 2019-05-07 | Heal Systems Lp | Systems and apparatuses for separating wellbore fluids and solids during production |
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| MX2016012330A (en) | 2014-03-24 | 2017-01-13 | Production Plus Energy Services Inc | Systems and apparatuses for separating wellbore fluids and solids during production. |
| US10589287B2 (en) | 2015-07-10 | 2020-03-17 | NGL Solids Solutions, LLC | Systems and methods for oil field solid waste processing for re-injection |
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| US10323494B2 (en) | 2015-07-23 | 2019-06-18 | General Electric Company | Hydrocarbon production system and an associated method thereof |
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| US10047596B2 (en) | 2015-07-23 | 2018-08-14 | General Electric Company | System and method for disposal of water produced from a plurality of wells of a well-pad |
| US11053788B2 (en) | 2015-12-16 | 2021-07-06 | Saudi Arabian Oil Company | Acoustic downhole oil-water separation |
| RU2610960C1 (en) * | 2015-12-21 | 2017-02-17 | Акционерное общество "Новомет-Пермь" | Multistage submersible water-oil separator |
| US10260323B2 (en) | 2016-06-30 | 2019-04-16 | Saudi Arabian Oil Company | Downhole separation efficiency technology to produce wells through a dual completion |
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| CN109271747B (en) * | 2018-11-08 | 2022-05-06 | 中国石油天然气股份有限公司 | Fitting method for determining oil well yield and wellhead back pressure of oil well with diameter of 38mm |
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- 2011-06-14 US US13/159,996 patent/US20120006543A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012005889A1 (en) | 2012-01-12 |
| RU2013103776A (en) | 2014-08-10 |
| RU2531984C2 (en) | 2014-10-27 |
| US20120006543A1 (en) | 2012-01-12 |
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