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公开(公告)号：US20190154051A1
公开(公告)日：2019-05-23
申请号：US16175068
申请日：2018-10-30
申请人： Sulzer Management AG
发明人： Nils HÖKBY
摘要： A pump includes first and second impellers and a sealing element. The sealing element is arranged between the first and second impellers around the drive shaft. The sealing element has a first end transvers to the drive shaft and facing the first impeller and a second end transverse to the drive shaft facing the second impeller. The sealing element has a length along an axis smaller than the distance between the first and second impellers such that the sealing element is movable along the axis between the first and second impellers. The first and second ends of the sealing element have first and second areas transverse to the axis, the first area being larger than the second area such that the force exerted by the lower pressure generated by the first impeller is substantially equal to the force exerted by the higher pressure generated by the second impeller.
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公开(公告)号：US20190145428A1
公开(公告)日：2019-05-16
申请号：US16204997
申请日：2018-11-29
发明人： Scott Judge , Andreas Dreiss , Neil Havrilla , David Olexson, JR.
摘要： A coaxial pump or turbine module directs working fluid past a rotor and through a flow path symmetrically distributed within an annulus formed between an outer module housing and an inner motor or generator coil housing. The inner housing can be cooled by working fluid in the flow path, or by a cooling fluid flowing between passages of the flow path. The flow path can extend over substantially a full length and rear surface of the inner housing. The rotor can be fixed to a rotating shaft, or rotate about a fixed shaft, which can be threaded into the motor and/or module housing. A plurality of the modules can be combined into a multi-stage apparatus, with rotor speeds independently controlled by corresponding variable frequency drives. The motor or generator can include radial or axial permanent magnets and/or induction coils. Embodiments include guide vanes and/or diffusers.
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公开(公告)号：US10280930B2
公开(公告)日：2019-05-07
申请号：US15181080
申请日：2016-06-13
发明人： Wayne Horley , Jerry Evans , Richard Jackson
摘要： A surface mounted pump assembly includes a centrifugal pump having a plurality of impellers and an electric motor adapted to drive the pump such that a thrust load from the pump is transmitted to the motor.
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公开(公告)号：US10260518B2
公开(公告)日：2019-04-16
申请号：US15318399
申请日：2014-07-24
发明人： Dezhi Zheng
IPC分类号： F04D29/08 , F04D13/08 , F04D17/12 , F04B47/06 , E21B43/12 , F04D1/06 , F04D25/06 , F04D29/22 , F04D29/28 , F04D29/42 , F04D29/44
摘要： In accordance with embodiments of the present disclosure, a electrical submersible pump includes a pump housing, a shaft extending at least partially through the pump housing and adapted to be driven by a submersible motor, an impeller attached to the shaft and having an impeller passage for fluid to flow therethrough, and a diffuser that is stationary relative to the pump housing and having a diffuser passage, wherein the diffuser is disposed corresponding to the impeller to form a pump stage such that fluid can flow between the impeller passage and the diffuser passage. The electrical submersible pump also includes a labyrinth seal formed between the impeller and the diffuser, wherein the labyrinth seal selectively seals the impeller passage from a cavity formed between the impeller and the diffuser to maintain the impeller in a floating condition relative to the diffuser.
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公开(公告)号：US20190085667A1
公开(公告)日：2019-03-21
申请号：US15707367
申请日：2017-09-18
发明人： Jinjiang Xiao , Chidirim Enoch Ejim
摘要： A housing-less wellbore pump assembly is described. The pump assembly includes multiple pump stages connected end-to-end axially to pump well fluid in an uphole direction. Each pump stage includes a rotating impeller to rotate to provide kinetic energy to flow fluid through the wellbore pump assembly and a stationary diffuser within which the rotating impeller is positioned. The stationary diffuser converts the kinetic energy received from the rotating impeller to head to flow the fluid through the wellbore pump assembly. The stationary diffuser includes an uphole threaded end and a downhole threaded end to threadedly couple with another, uphole-positioned pump stage and with another, downhole-positioned pump stage, respectively. Threads of the uphole threaded end and the downhole threaded end are formed in directions opposite to a rotational direction of the impeller.
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公开(公告)号：US10227989B2
公开(公告)日：2019-03-12
申请号：US15516561
申请日：2014-10-01
IPC分类号： F16C17/04 , F04D29/041 , F04D1/06 , F04D13/02 , F04D29/046 , F16C19/10
摘要： A thrust bearing assembly configured to reduce the axial displacement of a shaft includes a stationary thrust bearing, a thrust runner adjacent to the thrust bearing and a taper sleeve driver. The thrust runner includes a central passage. The taper sleeve driver includes an interior surface in contact with the shaft and an exterior surface in contact with the central passage of the thrust runner. The taper sleeve driver has a tapered exterior surface that applies a radially directed clamping force against the thrust runner as the taper sleeve driver is engaged within the central passage.
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公开(公告)号：US20180363659A1
公开(公告)日：2018-12-20
申请号：US16060215
申请日：2016-12-07
申请人： GRUNDFOS HOLDING A/S
摘要： A multistage centrifugal pump with a foot part (2) and with a head part (9), between which pump stages are integrated. The head part (9) and the foot part (2) are connected via tie-rods (11) which with one end are fastened on the head part (9) and with the other end are fastened on the foot part (2). The tie-rods (11) at one end comprise a thread (14), with which they are tightened on the head part (9). The tie-rods (11) are formed from sheet metal and at the other end comprise a recess (16), with which recess they are positively fixed on the foot part (2), at least one the tensile direction 22
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公开(公告)号：US10145380B1
公开(公告)日：2018-12-04
申请号：US15086825
申请日：2016-03-31
摘要： A thrust bearing suspension system and apparatus is described. A thrust bearing suspension system includes an electric submersible pump including at least two impellers, each of the at least two impellers paired with a diffuser, a thrust bearing set between two of the at least two impellers, the thrust bearing set comprising a bushing moveable axially between the two impellers and pivotable along a bushing-to-diffuser pivot key, and a retaining ring on a rim of the bushing constraining the axial movement of the bushing, the retaining ring extending across a radial tolerance between the bushing and at least one of the diffusers.
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公开(公告)号：US20180340403A1
公开(公告)日：2018-11-29
申请号：US16054718
申请日：2018-08-03
申请人： Summit ESP, LLC
CPC分类号： E21B43/128 , E21B17/026 , E21B17/206 , E21B33/03
摘要： A method of live well artificial lift completion includes hanging an umbilical on a wellhead of a live well, the umbilical fluidly coupling a production pump to a well surface and electrically coupling an electric motor to a surface power source, the electric motor powering the production pump. The umbilical includes coiled tubing surrounded by a jacket. The umbilical also includes power cables extruded inside the jacket to form a smooth jacket outer surface. The method also includes creating a pressure seal inside the umbilical during deployment of the umbilical into the live well, the pressure seal inside the umbilical created using a blowout plug positioned to block a discharge of the production pump. The method further includes forming an annular pressure seal during deployment of the production pump to obtain well control, the annular pressure seal formed using an annular bag coupled to the wellhead.
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公开(公告)号：US10072486B2
公开(公告)日：2018-09-11
申请号：US15592119
申请日：2017-05-10
申请人： Summit ESP, LLC
IPC分类号： E21B43/00 , E21B17/00 , E21B43/12 , E21B17/20 , F04D1/06 , F04D13/10 , E21B33/12 , E21B33/03
CPC分类号： E21B43/128 , E21B17/026 , E21B17/206 , E21B33/03
摘要： An apparatus, system and method for live well artificial lift completion. A live well artificial lift completion system includes an artificial lift pump discharge, a discharge adapter body secured between the artificial lift pump discharge and an umbilical, the discharge adapter body including an electrical connector fastened to an exterior of the discharge adapter body, an inner diameter of the discharge adapter body fluidly coupled to the artificial lift pump discharge, the umbilical including coiled tubing supportively hanging from an umbilical hanger within a wellhead, the umbilical hanger positioned in a tubing head spool, an inner diameter of the coiled tubing fluidly coupled to the inner diameter of the discharge adapter body, a jacket surrounding the coiled tubing, and a power cable extruded inside the jacket, wherein the power cable is connectable between the electrical connector of the discharge adapter body and a surface power source.
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