Measuring and testing – Volume or rate of flow
Reexamination Certificate
2011-04-19
2011-04-19
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Reexamination Certificate
active
07926360
ABSTRACT:
Methods and apparatus enable measuring flow of a fluid within a conduit. For example, flowmeters may measure the velocity of production fluid flowing through production pipe of an oil/gas well. The flowmeters rely on detection of pressure variations generated as a result of a backward-facing step as a basis for flow measurement calculations. Pressure sensing occurs away from the step in a direction of the flow of the fluid in an enhanced turbulence region of the flowmeter where the inner diameter remains enlarged as a result of the step.
REFERENCES:
patent: 4312234 (1982-01-01), Rhodes et al.
patent: 5033312 (1991-07-01), Stupecky
patent: 5970797 (1999-10-01), Hunter
patent: 6536291 (2003-03-01), Gysling et al.
patent: 6741179 (2004-05-01), Young
patent: 6782150 (2004-08-01), Davis et al.
patent: 6898986 (2005-05-01), Daniel et al.
patent: 6935189 (2005-08-01), Richards
patent: 7086294 (2006-08-01), DeLong
patent: 7607361 (2009-10-01), Unalmis et al.
patent: 2002/0194932 (2002-12-01), Gysling et al.
patent: 2008/0066559 (2008-03-01), Johansen et al.
patent: 2460079 (2004-09-01), None
patent: 2177803 (1987-01-01), None
patent: 2186981 (1987-08-01), None
patent: 2442117 (2008-03-01), None
patent: 2007008896 (2007-01-01), None
British Search Report dated Jun. 19, 2009 for British Application Serial No. GB0902853.1.
Wael H. Ahmed et al., “Development of two-phase flow downstream of a horizontal sudden expansion,” International Journal of Heat and Fluid Flow, International Jounral of Heat and Fluid Flow, Feb. 2008 vol. 29(1) pp. 194-206.
Canadian Office Action for CA Application No. 2,654,952, dated Sep. 23, 2010.
Johansen Espen S.
Perry Leslie Wayne
Ramakrishnan Vijay
Rodriguez Daniel
Unalmis Omer Haldun
Patterson & Sheridan L.L.P.
Thompson Jewel
Weatherford / Lamb, Inc.
LandOfFree
Sonar circumferential flow conditioner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sonar circumferential flow conditioner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sonar circumferential flow conditioner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2621115