General Electric Company

Ravdos Holdings Inc.

Lufkin Industries, LLC

Zengshi Chen

Younkoo Jeong

Shyam Sivaramakrishnan

Ying Mao

Doneil Macusi Dorado

Eric S Oestreich

Gary Hughes

Andy Cordova

Doneil Dorado

Eric Oestreich

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

A pumping control unit is disclosed herein. The pumping control unit includes a processor coupled to a memory and a communication interface. The memory is configured to store an invariant matrix. The communication interface is configured to receive a plurality of measurements of a time-varying parameter for a rod pumping unit. The plurality of measurements is taken at a surface of a pumping site over a pump cycle for a sucker rod string. The processor is configured to gain access to the invariant matrix in the memory and the plurality of measurements from the communication interface. The processor is further configured to compute a Fourier coefficient array based on the invariant matrix and the plurality of measurements. The processor is further configured to compute a time-varying downhole parameter based on the Fourier coefficient array and a sucker rod string model.

Pumping control unit and method of computing a time-varying downhole parameter

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Missouri City, TX, United States of America

Zengshi Chen