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Controlling the pressure within an annular volume of a wellbore

United States Patent

June 29, 2010
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.
Hermes; Robert E. (Los Alamos, NM), Gonzalez; Manuel E. (Kingwood, TX), Llewellyn; Brian C. (Kingwood, TX), Bloys; James B. (Katy, TX)
Chevron U.S.A. Inc. (San Ramon, CA), Los Alamos National Security (Los Alamos, NM)
12/ 249,852
October 10, 2008
This application was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.