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dc.contributor.author Karamarakar, M. en_US
dc.contributor.author Cheng, P en_US
dc.date.accessioned 2012-01-27T20:23:23Z en_US
dc.date.accessioned 2012-01-27T21:36:35Z en_US
dc.date.available 2012-01-27T20:23:23Z en_US
dc.date.available 2012-01-27T21:36:35Z en_US
dc.date.issued 1980-11-01 en_US
dc.identifier.citation Karamarakar M, Cheng P. 1980. Theoretical Assessment of James' Method for the Determination of Geothermal Wellbore Discharge Characteristics. Honolulu (HI): Department of Mechanical Engineering, University of Hawaii at Manoa en_US
dc.identifier.uri http://hdl.handle.net/10125/21811 en_US
dc.description Report Numbers: LBL-1149; GREMP-12; OSTI ID: 6944097 en_US
dc.description.abstract A theoretical study based on two-phase critical flow models has been performed to evaluate James' empirical method for the determination of geothermal wellbore discharge characteristics. The following conclusions are obtained: the James' empirical method for the determination of stagnation enthalpy, steam quality, and total flow rate are within 8% from results predicted from one-component two-phase critical flow models of Fauske, Moody, and Levy. When the wellbore discharge contains a substantial amount of CO{sub 2}, the determination of discharge characteristics based on the modified James' method agree with those predicted based on a modification of Fauske's model to the same degree of accuracy. An extension of Fauske's theory shows that if a large amount of dissolved salts exists in the discharge, the straight-forward application of James' method for the determination of discharge characteristics will lead to serious errors. When the lip pressure is low and the discharge pipe diameter is equal to or larger than 6-inches in diameter, the pressure gradient in the approach region of the critical flow is small such that the lip pressure measurements taken within 1/4-inch from the exit would not affect the accuracy of the determination of the critical flow rate. en_US
dc.description.sponsorship DOE Contract Number W-7405-ENG-48 en_US
dc.format.extent 24 pages en_US
dc.language.iso en-US en_US
dc.publisher Department of Mechanical Engineering, University of Hawaii at Manoa en_US
dc.subject reservoir testing en_US
dc.subject modeling en_US
dc.subject worldwide en_US
dc.subject.lcsh Reservoir testing en_US
dc.subject.lcsh borehole flow en_US
dc.subject.lcsh engineering en_US
dc.title Theoretical assessment of James' method for the determination of geothermal wellbore discharge characteristics en_US
dc.type Report en_US
dc.type.dcmi Text en_US

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