Lufkin Industries, LLC

Ravdos Holdings Inc.

Doneil Macusi Dorado

Eric S Oestreich

Sam Gavin Gibbs

Kenneth Bernard Nolen

LeMoyne Boyer

Jeffrey J Dacunha

Gary Hughes

Peter Westerkamp

Zengshi Chen

Alan L Roberson

David L Pinnell

Kelly A Woolsey

Bobby R Bramlett

Andy Cordova

Jeffrey Dacunha

Sam Gibbs

Kenneth Nolen

An artificial lift system provides an under pumping mitigation functionality through the use of a controller that adjusts a sucker rod pump's pumping speed. The controller determines whether: (a) the fillage level of the pump is equal to or above a pre-determined fillage level. The controller also determines whether the fluid level in the wellbore in which the pump is positioned is not decreasing. and increases the pumping rate of the pump if, over a given period, both (i) the fluid level is not decreasing and (ii) the pump fillage level is above the predetermined fillage level.

Artificial lift system with under pumping mitigation

A method for determining a pump card for a well. The method comprising: obtaining a first set of data points, wherein the first set of data points comprise a first set of polished rod position data points of the well and a first set of polished rod load data points of the well; and calculating a first data point of a pump position and a pump load using the first set of data points. The calculating occurs before the well moves through a first complete stroke cycle.

Real-time pump diagnostic algorithms and application thereof

An apparatus and method for well control and monitoring including an independent web server computer integrated with a pump controller located at each well in an oil field. The well controller locally controls the well pump, processes well and pump data, generates surface and downhole cards, and communicates production reports, recommendations for production improvements, and production statistics to remote sites via the internet. The controller can be queried remotely to provide production reports, etc. Furthermore, the controller can initiate alerts via email, text messaging, or internet messaging, for example, during fault conditions.

Real-time onsite internet communication with well manager for constant well optimization

An instrumentation system for assessing operation of a reciprocating pump system which produces hydrocarbons from a non-vertical or a vertical wellbore. The instrumentation system periodically produces a downhole pump card as a function of a directly or indirectly measured surface card and a friction law function from a wave equation which describes the linear vibrations in a long slender rod. A control signal or command signal is generated based on characteristics of the downhole pump card for controlling the pumping system. It also generates a pump and well analysis report that is useful for a pump operation and determination of its condition.

Apparatus for analysis and control of a reciprocating pump system by determination of a pump card

A system and method for controlling the speed of a progressing cavity liquid well pump to increase liquid production from a well while avoiding operation of the well in a pumped-off state. A controller controls a variable speed drive to drive a progressing cavity liquid well pump at a set pump speed while measuring well and system parameters indicative of pumping performance and/or liquid production from the well. The set speed of the pump is changed in steps either increasingly or decreasingly by the controller, acting through the variable speed drive, in response to the measured well and system parameters. The controller, responsive to the measured well and system parameters, challenges the set pump speed by varying the set pump speed so as to increase the production from the well while avoiding pump and well operation in a pumped-off state.

System and method for controlling a progressing cavity well pump

Rod Float Mitigation (RFM) methods for rod-pumped oil wells having a variable frequency drive which controls the speed of the motor for the pump. Each method monitors rod loads or a similar condition and takes action only when rod load drops below a predefined minimum load. A first method reduces the speed of the motor to a preset level. A second method fixes the torque level on the pump downstroke by adjusting motor speed based on a calculated gearbox torque compared to a programmed fixed limit. Another method includes a program in the variable frequency drive which includes a preferred RFM Torque Curve for the pump to follow on its downstroke. When rod float occurs, the program monitors gearbox torque and adjusts the speed to follow the predetermined RFM Torque Curve thereby mitigating rod float with minimum decrease in production.

Method for mitigating rod float in rod pumped wells

Apparatus, methods and products for monitoring/controlling a reciprocating well producing hydrocarbons from a wellbore, which determine the surface card from a well operating characteristics, determine the downhole card, and display both at the same scale for position.

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Missouri City, TX, United States of America

Doneil Macusi Dorado