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:
Dec. 18, 2012
Filed:
Oct. 20, 2009
Kai Hsu, Sugar Land, TX (US);
Kentaro Indo, Edmonton, CA;
Peter S. Hegeman, Stafford, TX (US);
Carsten Sonne, Houston, TX (US);
Kai Hsu, Sugar Land, TX (US);
Kentaro Indo, Edmonton, CA;
Peter S. Hegeman, Stafford, TX (US);
Carsten Sonne, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Example methods and apparatus to determine phase-change pressures are disclosed. A disclosed example method includes capturing a fluid in a chamber, pressurizing the fluid at a plurality of pressures, measuring a plurality of transmittances of a signal through the fluid at respective ones of the plurality of pressures, computing a first magnitude of a first subset of the plurality of transmittances, computing a second magnitude of a second subset of the plurality of transmittances, comparing the first and second magnitudes to determine a phase-change pressure for the fluid.