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公开(公告)号：US09982485B2
公开(公告)日：2018-05-29
申请号：US15342924
申请日：2016-11-03
发明人： William Murray , Lance D. Underwood , Peter Thomas Cariveau , Brian P. Jarvis , Nigel Wilcox , Brian Williams , Geoffrey Downton , Lawrence Lee , Shun'etsu Onodera , Daniel Alvarado , Maxim Pushkarev , Gokturk Tunc , Andrei Plop
CPC分类号： E21B4/02 , F01C1/10 , F01C21/08 , F01C21/104 , F03C2/08 , F04C2/1071 , F04C13/008 , F04C15/0065
摘要： Techniques relate to a moving cavity motor or pump, such as a mud motor, including a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch. The motor may include a top sub, power section having a progressive cavity motor with a stator and rotor, a rotor catch, and an apparatus between a proximal and distal end of the rotor catch shaft. The apparatus may constrain the radial and/or tangential movement of the rotor catch shaft and the rotor.
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公开(公告)号：US09856872B2
公开(公告)日：2018-01-02
申请号：US14892428
申请日：2013-05-23
CPC分类号： F04C13/008 , E21B43/121 , F04C2/1071 , F04C2230/60 , F04C2230/601 , F04C2230/604 , F04C2230/70 , F04C2230/80
摘要： A method for operating a progressive cavity pump wherein the stator has at least first and second active stator sections that are at different locations on the stator, comprising inserting a first rotor having a first active rotor section that is aligned with the first active stator section, and rotating the first rotor relative to the first active stator section such that the aligned first active rotor and stator sections generate a pumping force. Subsequently, the first rotor is removed and a second rotor is inserted having a second active rotor section that is aligned with the second active stator section, and rotating the second rotor relative to the second active stator section such that the aligned second active rotor and stator sections generate a pumping force.
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公开(公告)号：US20170373613A1
公开(公告)日：2017-12-28
申请号：US15538455
申请日：2015-12-22
发明人： Al Duerr , Aaron Brassard , John Doyle , Wray Sparling
IPC分类号： H02P3/22 , H02P3/02 , H02H7/20 , H02H3/08 , H02P27/04 , H02H5/04 , F04C2/107 , F04C15/00 , F04C14/28
CPC分类号： H02P3/22 , F04C2/107 , F04C14/28 , F04C15/008 , H02H3/083 , H02H5/043 , H02H7/20 , H02P3/02 , H02P27/045
摘要： The invention relates to fluid drive systems used in fluid wells and brake systems for permanent magnet wellhead direct drives. The braking controller connects or disconnects a brake resistor from a back EMF. A variable frequency drive (VFD) drives the motor and communicates with the control circuitry of the brake controller. The control circuitry monitors the brake resistor and depending on the rotational speed and direction of the motor and operating state of the VFD, disconnects or connects the brake resistor. If the direction of the motor is in reverse and above a threshold speed, it connects the brake resistor. If the direction of the motor is in reverse and below the threshold speed, the control circuitry dissipates stored back EMF through the brake controller. The amount of stored back EMF corresponds to the time to empty a pump.
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公开(公告)号：US20170306760A1
公开(公告)日：2017-10-26
申请号：US15503901
申请日：2015-07-30
申请人： SEEPEX GmbH
发明人： Dirk OVERMEIER , Marcel GRIESDORN , Stefan GOETHEL
CPC分类号： F01C21/104 , F01C21/007 , F04C2/107 , F04C2/1073 , F04C15/0019 , F04C15/0042 , F04C2240/10 , F04C2240/30 , F04C2240/805
摘要： The invention relates to an eccentric screw pump, comprising at least one stator (1) composed of an elastic material and a rotor (2) that can be rotated in the stator (1), the stator (1) being surrounded by a stator casing (3) at least in some regions. The stator casing (3) consists of at least two casing segments (19) as a longitudinally divided casing and forms a stator clamping device, by means of which the stator (2) can be clamped against the rotor (1) in the radial direction. The pump is characterized in that the casing segments (19) have at least one clamping flange (20) having first clamping surfaces (21) at each end of the casing segments and that one or more clamping elements (22, 23), which can be displaced in the axial direction and have second clamping surfaces (24), are placed onto the clamping flange (20), the first clamping surfaces (21) and the second clamping surfaces (24) being designed in such a way and interacting in such a way that the stator casing (3) can be clamped against the stator in the radial direction in the course of an axial displacement of the clamping elements (22, 23).
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公开(公告)号：US09765790B2
公开(公告)日：2017-09-19
申请号：US14660618
申请日：2015-03-17
IPC分类号： F04D13/08 , F04D29/041 , F04C2/107 , F04C13/00 , F04C15/00 , F04D1/00 , F04D7/04 , F04D13/06 , F04D29/043 , F04D29/42 , F04D29/44
CPC分类号： F04D29/0413 , F04C2/107 , F04C2/1071 , F04C13/008 , F04C15/0042 , F04C15/008 , F04D1/00 , F04D7/04 , F04D13/06 , F04D13/08 , F04D29/043 , F04D29/426 , F04D29/445
摘要： An electrical submersible pump assembly has a thrust bearing mechanism with first and second thrust runners axially and rotationally secured to the shaft and located within a housing. First and second thrust receiving structures are rigidly mounted in the housing to receive thrust from the first and second thrust transferring devices. A deflectable member located in the first thrust transfer thrust device decreases in axial thickness in response to thrust of a selected level. The second thrust transfer thrust device has an axial length less than an axial distance from the second thrust receiving structure to the second thrust runner, defining an initial axial gap. During operation of the pump, the shaft and the first and second thrust runners move axially a limited extent, closing the gap and transferring thrust from the second thrust transfer device to the second thrust receiving structure.
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公开(公告)号：US20170227008A1
公开(公告)日：2017-08-10
申请号：US15120031
申请日：2015-02-18
发明人： Oleg Dmitriev , Evgeniy Tabpta
IPC分类号： F04C15/00 , F04C18/107 , F04C29/00 , F04C2/107
摘要： A conical screw compressor or pump comprises an inner element configured to rotate around a first axis and an outer element configured to rotate around a second axis. An outer surface of the inner element and an inner surface of the outer element comprise cooperating grooves and teeth that intermesh on rotation. The first axis and the second axis are each stationary and the first axis is inclined relative to the second axis. The inner element and the outer element are configured to be, in operation, synchronously rotated, thereby to reduce or eliminate force exerted by the inner element on the outer element or vice versa.
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公开(公告)号：US09695638B2
公开(公告)日：2017-07-04
申请号：US14358944
申请日：2012-11-16
发明人： William Murray , Lance D. Underwood , Peter Thomas Cariveau , Brian P. Jarvis , Nigel Wilcox , Brian Williams , Geoffrey Downton , Lawrence Lee , Shun'etsu Onodera , Daniel Alvarado , Maxim Pushkarev , Gokturk Tunc , Andrei Plop
CPC分类号： E21B4/02 , F01C1/10 , F01C21/08 , F01C21/104 , F03C2/08 , F04C2/1071 , F04C13/008 , F04C15/0065
摘要： A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator, where the apparatus for constraining is operable with the rotor catch.
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公开(公告)号：US09678511B2
公开(公告)日：2017-06-13
申请号：US13859936
申请日：2013-04-10
发明人： Anthony E. Stavale
CPC分类号： G05D7/0635 , F04C2/1071 , F04C14/28 , F04C2270/02 , F04C2270/03 , F04C2270/052 , F04C2270/80 , G01F25/0007
摘要： Techniques are provided for tuning a rotary positive displacement pump. The techniques include apparatus featuring a signal processor configured to the present invention may take the form of apparatus comprising a signal processor that may be configured to receive signaling containing information about actual pump performance data related to the operation of a rotary positive displacement pump; and determine corrected published pump performance data to operate the rotary positive displacement pump by compensating published pump performance data based at least partly on the actual pump performance data. The corrected published pump performance data may include a corrected published rated power, flow and slip factor, and the actual pump performance data contains information about actual power, specific gravity and viscosity related to the operation of the rotary positive displacement pump and received from a pump controller or controlling device, including a variable frequency drive.
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公开(公告)号：US09670727B2
公开(公告)日：2017-06-06
申请号：US14445298
申请日：2014-07-29
CPC分类号： E21B4/006 , F04C2/1073 , F04C13/008 , F04C15/0065
摘要： A drilling system includes a drillstring and a power section further including a stator having a stator axis and a rotor within the stator. The rotor rotates eccentrically within the stator in response to fluid flowing therebetween. Additionally, the system includes a coupling section including first, second, and third rotation members having a first, second, and third axes, respectively. The third rotation member is coupled to the first and second rotation members. The third rotation member is configured to move radially relative to the first and second rotation members as the first, second, and third rotation members rotate about the first, second, and third axes, respectively. Further, the system includes an input shaft coupled to the rotor and first rotation member. The input shaft and first rotation member rotate with the rotor eccentrically to the stator axis and the second rotation member rotates concentrically about the stator axis.
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公开(公告)号：US09662624B2
公开(公告)日：2017-05-30
申请号：US13510420
申请日：2009-12-22
CPC分类号： B01J8/002 , B01J19/2435 , B01J2208/00752 , C08F10/00 , F04C2/1071 , F04C11/003 , F04C15/0038 , C08F2/00
摘要： Both a catalyst feed system and a method are provided for providing a flow, of a mud-like catalyst slurry into a polyolefin reactor. The system includes a pressurized reservoir of the catalyst having an outlet, and a progressive cavity pump including a stator and a rotor. The pump stator has an inlet connected to the reservoir outlet, and an outlet leading to the polyolefin reactor. In operation, the reservoir is first pressurized to a level a little higher than the pressure of the reactor. The outlet of the reservoir is opened and the progressive cavity pump is actuated. The pressure drop generated across the catalyst slurry contained in the reservoir by the pump causes the slurry diluent to flow between the interstices of the particles of catalyst. The thick, mud-like catalyst slurry is quickly transformed into a much less viscous, syrup-like slurry that flows from the reservoir outlet to the inlet of the pump stator. The progressive cavity pump then continuously conveys the catalyst through the stator outlet and into the reactor.
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