Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2007-08-24
2009-11-24
Dunn, Drew A (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
Reexamination Certificate
active
07623975
ABSTRACT:
A method of measuring a dry gas flow from hydrocarbon wells. The hydrocarbon wells produce a stream which contains liquids and natural gas. The method comprises providing a differential flow measurement device (orifice) located at a well site containing the hydrocarbon wells. The method further includes testing the stream for gas composition and physical characteristics. Additionally, the method comprises measuring a static temperature (T) of the stream, measuring a static pressure (Ps), and measuring a pressure differential (dP) in the differential flow measurement device (orifice). The method includes computing the liquid-gas ratio (LGR) of the stream, computing the wet gas flow rate (Qw) of the stream, computing a first dry gas flow rate (Qd1) and a second dry gas flow rate and utilizing a iterative process to correct and obtain the dry gas flow rate. The data may be transmitted to another location.
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Atkinson D I et al: “High-accuracy wet-gas multiphase well testing and production metering” SPE Annual Technical Conference and Exhibition, XX, XX, Sep. 26, 2004, pp. 1-9, XP009115014 the whole document.
ISA Search Report, Apr. 27, 2009, zed.i solutions (Canada) Inc.
Do Robert
Ito Tokunosuke
Lakhani Iqbal
Zerb Brian
Zhao Long
Cherry Stephen J
Dunn Drew A
Jones Walker
zed.i solutions Inc.
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