The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 1997
Filed:
Sep. 25, 1992
Gary L Beer, Plano, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
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.