公开(公告)号：EP2776714A4

公开(公告)日：2016-06-29

申请号：EP12855283

申请日：2012-10-29

申请人： WEATHERFORD LAMB ,  PONS VICTORIA M

发明人： PONS VICTORIA M

IPC分类号： E21B43/00 ,  E21B43/12 ,  F04B47/02 ,  F04B49/06 ,  F04B51/00

CPC分类号： F04B49/065 ,  E21B43/127 ,  E21B47/0008 ,  E21B2043/125 ,  F04B47/022 ,  F04B49/20 ,  F04B51/00 ,  F04B2201/121 ,  F04B2201/1211 ,  G05B13/042

摘要： Diagnosing a pump apparatus having a downhole pump disposed in a deviated wellbore characterizes axial and transverse displacement of a rod string with two coupled non-linear differential equations of fourth order, which include axial and transverse equations of motion. To solve the equations, derivatives are replaced with finite difference analogs. Initial axial displacement of the rod string is calculated by assuming there is no transverse displacement and solving the axial equation. Initial axial force is calculated using the initial axial displacement and assuming there is no transverse displacement. Initial transverse displacement is calculated using the initial axial force and the initial axial displacement. Axial force and friction force are calculated using the initial displacements, and the axial displacement at the downhole pump is calculated by solving the axial equation with the axial force and the friction force. Load at the downhole pump is calculated so a downhole card can be generated.

摘要翻译： 泵装置具有设置在井筒中的井下泵，并且在井筒的表面具有马达，井下泵通过由马达可操作地移动的杆串在井眼中往复运动。 使用表面测量和具有阻尼因子或两个阻尼因子的波动方程模型来产生指示井下泵的载荷和位置的卡。 实际的流体载荷线由井下卡的井下泵的上行程和下行程确定，以及从井下数据的载荷分布计算出的流体载荷线。 将实际流体负载管线与计算的流体负荷管线进行比较，使得可以基于比较来修改泵装置的至少一个参数。 例如，可以调整波动方程模型的阻尼，从而可以产生另一个井下卡。

公开(公告)号：EP2718566A2

公开(公告)日：2014-04-16

申请号：EP12860691.0

申请日：2012-05-16

申请人： Unico, Inc.

发明人： GREGORY, Benjamin J. ,  BECK, Thomas L. ,  PETERSON, Ronald G. ,  MacDONALD, Michael A. ,  DRY, Michael D.

IPC分类号： F04B9/02 ,  E21B43/16

CPC分类号： E21B43/127 ,  E21B43/126 ,  E21B2043/125 ,  F03G6/00 ,  F04B17/006 ,  F04B47/02 ,  F04B47/022 ,  F04B47/026 ,  F24T10/10 ,  F24T2010/56 ,  Y02E10/12 ,  Y02E10/46 ,  Y02P80/158 ,  Y10T29/49716

摘要： An improved apparatus and method are provided, for pumping fluids, such as water and/or hydrocarbons, from a subterranean formation or reservoir, through use of a cranked rod pumping (CRP) apparatus for imparting reciprocating substantially vertical motion to a rod of a sucker-rod pump having a pump stroke. The CRP apparatus includes a motor driven cranked mechanical actuator arrangement. The cranked mechanical actuator arrangement includes a substantially vertically moveable member attached to the rod of the sucker-rod pump for imparting and controlling vertical motion of the rod of the sucker-rod pump. The actuator arrangement may include pneumatic counterbalancing.

公开(公告)号：EP3164601B1

公开(公告)日：2018-10-03

申请号：EP15739414.9

申请日：2015-07-01

申请人： Bristol, Inc., D/B/A Remote Automated Solutions

发明人： MILLS, Thomas, Matthew

IPC分类号： F04B47/02 ,  F04B47/14

CPC分类号： F04B49/065 ,  E21B43/126 ,  F04B47/00 ,  F04B47/02 ,  F04B47/022 ,  F04B47/14

摘要： Methods and apparatus to determine parameters of a pumping unit for use with wells are disclosed. An example apparatus includes a housing and a processor positioned in the housing. The processor is to determine a first load on a polished rod of a pumping unit, to estimate a first torque of a motor of the pumping unit, and determine a first torque factor for the pumping unit. The processor is to, based on the first load, the first torque, and the first torque factor, determine a phase angle of a counterbalance of the pumping unit or a moment of the counterbalance.

公开(公告)号：EP2917472B1

公开(公告)日：2017-07-05

申请号：EP13852561.3

申请日：2013-11-04

申请人： Unico, Inc.

发明人： PETERSON, Ronald, G.

IPC分类号： E21B43/12 ,  E21B47/008 ,  E21B43/16

CPC分类号： E21B47/0008 ,  F04B47/022

公开(公告)号：EP2917472A1

公开(公告)日：2015-09-16

申请号：EP13852561.3

申请日：2013-11-04

申请人： Unico, Inc. ,  Peterson, Ronald, G.

发明人： PETERSON, Ronald, G.

IPC分类号： E21B43/12 ,  E21B47/008 ,  E21B43/16

CPC分类号： E21B47/0008 ,  F04B47/022

摘要： There is provided a method and system to determine the position of a sucker rod pumping system without a position sensing device during production pumping. A pump control system of the sucker rod pumping system includes a controller coupled to a database, with the controller configured to access an rxless torque value in the database. With the stored rxless torque value representative of toggle points of the crank arm during an initial calibration pumping cycle, the controller further is configured to continuously sample the rxless torque value of the system and determine the crank arm position in relation to the sample rxless torque value. The controller adjusts the pumping system for optimal operations, without a crank arm position sensor during production pumping by identifying a toggle point and setting the crank arm position estimate equal to the value corresponding to the crank position at the identified toggle point.

摘要翻译： 提供了一种方法和系统，用于在生产泵送期间确定没有位置感测装置的抽油杆泵送系统的位置。 抽油杆泵送系统的泵控制系统包括耦合到数据库的控制器，其中控制器被配置为访问数据库中的无效力矩值。 利用在初始校准泵循环期间代表曲柄臂的切换点的存储的无力矩扭矩值，控制器进一步被配置为连续采样系统的无力矩扭矩值并确定与样本无扭矩扭矩值有关的曲柄臂位置 。 控制器通过识别切换点并将曲柄臂位置估计值设置为等于对应于所识别的切换点处的曲柄位置的值来调整泵送系统以获得最佳操作，而无需在生产泵送期间的曲柄臂位置传感器。

公开(公告)号：EP3362686A1

公开(公告)日：2018-08-22

申请号：EP16856188.4

申请日：2016-10-13

申请人： Unico, Inc.

发明人： HILGERS, Andrew J. ,  MACDONALD, Michael A. ,  GREGORY, Benjamin J. ,  PETERSON, Ronald G.

IPC分类号： F04B47/02 ,  F04B17/03 ,  F04B53/00 ,  F04D13/10

CPC分类号： F04B19/22 ,  E21B43/127 ,  F04B9/02 ,  F04B9/047 ,  F04B17/03 ,  F04B47/02 ,  F04B47/022 ,  F04B49/06 ,  F04B49/065 ,  F04B51/00 ,  F04B53/10 ,  F04B53/1032 ,  F04B53/1087 ,  F04B53/14 ,  F04B53/20

摘要： A method for operating a tandem motor linear rod pumping apparatus that includes first and second linear mechanical actuator systems each having a motor, and also includes a rod for a sucker-rod pump. The method calls for constructing the first and second linear mechanical actuator systems to operate within a single housing, and simultaneously operating each of the two motors in a manner that imparts reciprocating vertical motion to respective-vertically movable members of the first and second linear mechanical actuator systems. Each motor has a reversibly rotatable element that is operatively connected to the vertically-movable member of its respective linear mechanical actuator system, thus establishing a fixed relationship between the rotational position of the rotatable element and the vertical position of its respective vertically-movable member. The simultaneous operation of the two motors imparts a reciprocating vertical motion to the pump rod of the sucker-rod pump.

公开(公告)号：EP2035702B1

公开(公告)日：2018-08-22

申请号：EP07798436.7

申请日：2007-06-12

申请人： Unico, Inc.

发明人： BECK, Thomas L. ,  ANDERSON, Robb G. ,  PETERSON, Ronald G. ,  MACDONALD, Michael A.

IPC分类号： F04B47/02 ,  F04B47/04 ,  F04B17/03

CPC分类号： F04B47/04 ,  F04B47/022

摘要： An apparatus and method for pumping fluids, such as water and/or hydrocarbons, from a subterranean formation or reservoir, include a linear rod pump having a mechanical rack and pinion drive arrangement, adapted for attachment to a pumping mechanism, such as the polished rod at the top of a rod string in a hydrocarbon well. The rack gear, of the rack and pinion drive arrangement, is adapted for connection to, and movement with, the polished rod. The pinion gear does not translate with the rack gear, and is driven by a reversible motor for affecting up and down reciprocating motion of the rack gear and pumping mechanism. Some forms of the invention include a compressible gas counter-balance arrangement. Some forms of the invention include an electronic drive configured for dealing with electric power generated by the motor during a portion of the pumping cycle.

公开(公告)号：EP3308022A4

公开(公告)日：2018-07-18

申请号：EP16808265

申请日：2016-06-09

申请人： UNICO

发明人： GREGORY BENJAMIN J

IPC分类号： F04B47/02 ,  E21B43/12

CPC分类号： F04B47/02 ,  E21B43/126 ,  E21B43/127 ,  F04B17/03 ,  F04B23/06 ,  F04B47/022 ,  F04B49/065 ,  F04B53/10 ,  F16H19/04

摘要： A dual completion linear rod pumping apparatus for imparting reciprocating vertical motion to a pair of rods for respective sucker-rod pumps. The dual completion linear rod pumping apparatus includes first and second linear mechanical actuator systems disposed in a single housing. These linear mechanical actuator systems impart and control vertical motion of the pair of rods. Each linear mechanical actuator system includes a rack and pinion gearing arrangement. The rack is operatively connected in a gear-mesh relationship with the pinion. The pinion is operatively connected to a rotating output of a motor. Rotation of the motor in a first direction results in an upward motion of the rack and connected sucker rod pump. Rotation of the motor in a second direction opposite the first direction results in a downward motion of the rack and connected sucker rod pump. An electronic controller is operatively connected to the motor.

公开(公告)号：EP3308022A1

公开(公告)日：2018-04-18

申请号：EP16808265.9

申请日：2016-06-09

申请人： Unico, Inc.

发明人： GREGORY, Benjamin J.

IPC分类号： F04B47/02 ,  F16H19/04 ,  F04B49/06 ,  E21B43/12

CPC分类号： F04B47/02 ,  E21B43/126 ,  E21B43/127 ,  F04B17/03 ,  F04B23/06 ,  F04B35/04 ,  F04B41/06 ,  F04B47/022 ,  F04B47/026 ,  F04B49/065 ,  F04B51/00 ,  F16H19/04

摘要： A dual completion linear rod pumping apparatus for imparting reciprocating vertical motion to a pair of rods for respective sucker-rod pumps. The dual completion linear rod pumping apparatus includes first and second linear mechanical actuator systems disposed in a single housing. These linear mechanical actuator systems impart and control vertical motion of the pair of rods. Each linear mechanical actuator system includes a rack and pinion gearing arrangement. The rack is operatively connected in a gear-mesh relationship with the pinion. The pinion is operatively connected to a rotating output of a motor. Rotation of the motor in a first direction results in an upward motion of the rack and connected sucker rod pump. Rotation of the motor in a second direction opposite the first direction results in a downward motion of the rack and connected sucker rod pump. An electronic controller is operatively connected to the motor.

公开(公告)号：EP3118409B1

公开(公告)日：2018-02-07

申请号：EP16179811.1

申请日：2016-07-15

申请人： Weatherford Technology Holdings, LLC

发明人： PONS, Victoria M. ,  ALLISON, Anthony P. ,  GOMES, Jeremy

IPC分类号： E21B43/12 ,  E21B47/00

CPC分类号： E21B47/0007 ,  E21B43/127 ,  E21B47/0008 ,  F04B47/022 ,  F04B49/065 ,  F04B49/22 ,  F04B2201/0201 ,  F04B2201/0601 ,  F04B2201/121 ,  G05B19/042 ,  G05B2219/43193 ,  G05D7/0676

摘要： Techniques and apparatus are provided for improved diagnostics of downhole dynamometer data for control and troubleshooting of reciprocating rod lift systems. A method for pump fillage determination for a reciprocating rod lift system is provided. The method generally includes measuring downhole data during a pump cycle, wherein the downhole data comprises a first plurality of data points associated with an upstroke of the pump cycle and a second plurality of data points associated with a downstroke of the pump cycle, each data point comprising a rod position value and an associated rod load value; converting the data points to non-dimensional data points, calculating non-dimensional slope values between non-dimensional data points; and determining pump fillage based, at least part, on the calculated non-dimensional slope values.