Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1992-09-25
1997-09-02
McMahon, Timothy
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
73 2903, 374 42, G01N 2560
Patent
active
056634919
ABSTRACT:
Steam quality in flow lines equipped with orifice meters may be determined by injecting a predetermined quantity of water into the flow line and measuring the orifice pressure differential with and without water injection. An approximation of the James correlation, which relates the orifice differential pressure, the total fluid mass flow rate and steam quality raised to the 1.5 power, may be used for conditions both before and during water injection together with an energy balance for conditions both before and during water injection to determine steam quality before water injection. A portable water injection unit may be temporarily connected to each flow line at a tap installed in the flow line upstream of the orifice. The effect of water injection for each flow condition may be prior confirmed by injecting a predetermined quantity of water downstream of the orifice based on an initial estimate of dry steam flow in the line.
REFERENCES:
patent: 4193290 (1980-03-01), Sustek, Jr. et al.
patent: 4681466 (1987-07-01), Chien et al.
"Steam Quality and Metering", T. M. Wilson, The Journal of Canadian Petroleum Technology, Apr.-Jun. 1976.
"Kern River Field Test of a Steam Quality Measurement Technique", C.L. Redus, et al, SPE Paper No. 17445, Society of Petroleum Engineers, 1988.
Atlantic Richfield Company
Martin Michael E.
McMahon Timothy
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