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1. 发明申请

US20050281681A1 Method and system for improving pump efficiency and productivity under power disturbance conditions 有权
公开(公告)号：US20050281681A1
公开(公告)日：2005-12-22
申请号：US11155974
申请日：2005-06-17
申请人： Robb Anderson , Mark Garlow , Harry Schulz
发明人： Robb Anderson , Mark Garlow , Harry Schulz
IPC分类号： E21B41/00 , E21B43/00 , E21B43/12 , F04B17/03 , F04B49/06 , F04C2/107 , F04C13/00 , F04C14/28 , F04C15/00 , G05D7/00 , G05D7/06 , G05D11/00 , H02P7/00
CPC分类号： E21B43/128 , E21B41/0021 , E21B43/126 , F04B49/06 , F04C2/1073 , F04C13/008 , F04C14/28 , F04C15/0061 , F04C2270/72 , Y02P80/116
摘要： A system for controlling operation of a progressing cavity pump to maintain the motor operating under power disturbance conditions. For a blackout condition, a backspin controller uses regenerative power to provide controlled deceleration of the pump, counteracting backspin and preventing backspinning freely. For a brownout condition, a power dip controller weakens the motor field to maximize pump production consistent with reduced input power availability. For a phase loss or voltage imbalance condition, a phase loss controller reduces motor power output to keep drive system output power at or below single phase capacity.

2. 发明申请

US20070148007A1 Estimation and Control of a Resonant Plant Prone to Stick-Slip Behavior 有权
标题翻译：共振植物的估计和控制倾向于滑动行为
公开(公告)号：US20070148007A1
公开(公告)日：2007-06-28
申请号：US11564474
申请日：2006-11-29
申请人： Mark Garlow
发明人： Mark Garlow
IPC分类号： F04B49/00
CPC分类号： F04B49/20 , F04B2203/0209
摘要： A method and apparatus are provided for estimating and/or precluding stick-slip, or other oscillatory or resonant behavior, through use of a virtual transducer, which precludes the need for having sensors located adjacent to a driven element of the system, or adjacent contact surfaces at which the stick-slip relative motion may occur. Parameters measurable at a drive mechanism are utilized for controlling a system in a manner which precludes stick-slip, or other oscillatory or resonant behavior, of the driven element. Relative motion between contacting surfaces in the driven element, prone to stick-slip behavior, is controlled such that, after sufficient force is applied by the drive element to overcome static friction forces between the contacting surfaces and break them free from one another, relative motion between the surfaces is maintained at a high enough relative speed that the surfaces are precluded from statically contacting one another, so that stick-slip behavior is precluded.
摘要翻译：提供了一种方法和装置，用于通过使用虚拟换能器来估计和/或排除粘滑或其它振荡或共振行为，这排除了需要使传感器位于与系统的从动元件相邻的邻近触点可能发生粘滑移相对运动的表面。在驱动机构处可测量的参数用于以排除驱动元件的粘滑或其它振荡或共振行为的方式控制系统。被驱动元件的接触表面之间的相对运动容易产生粘滑性能被控制，使得在通过驱动元件施加足够的力以克服接触表面之间的静摩擦力并将它们彼此分开时，相对运动在表面之间保持足够高的相对速度，使得表面不被彼此静电接触，从而阻止粘滑性能。

3. 发明申请

US20060251525A1 Rod pump control system including parameter estimator 有权
公开(公告)号：US20060251525A1
公开(公告)日：2006-11-09
申请号：US11480085
申请日：2006-06-30
申请人： Thomas Beck , Ronald Peterson , Mark Garlow , Theresa Smigura
发明人： Thomas Beck , Ronald Peterson , Mark Garlow , Theresa Smigura
IPC分类号： F04B49/06
CPC分类号： F04D13/10 , E21B43/126 , F04B47/02 , F04B49/065 , F04B2203/0201 , F04B2203/0202 , F04B2203/0207 , F04B2203/0208 , F04B2205/00 , F04B2205/05 , F04D15/0066 , F04D15/0088
摘要： A rod pump control system includes a parameter estimator that determines from motor data parameters relating to operation of the rod pump and/or downhole dynamometer card without the need for external instrumentation, such as down hole sensors, echo meters, flow sensors, etc. In one embodiment, instantaneous motor current and voltage together with pump parameters are used in determining rod position and load. The rod position and load are used to control the operation of the rod pump to optimize the operation of the pump. Also disclosed in a pump stroke amplifier that is capable of increasing pump stroke without changing the overall pumping speed, or in the alternative, maintaining the well output with decreased overall pumping speed.

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