Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2008-10-31
2011-10-11
Schechter, Andrew (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C702S187000, C702S188000, C702S189000
Reexamination Certificate
active
08036829
ABSTRACT:
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.
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DaCunha Jeffrey J.
Dorado Doneil M.
Gibbs Sam G.
Nolen Kenneth B.
Oestreich Eric S.
Greenberg & Traurig, LLP
Huynh Phuong
Lufkin Industries, Inc.
Schechter Andrew
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