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. 07, 2010
Filed:
Sep. 20, 2007
Toru Terabayashi, Sagamihara, JP;
Tsutomu Yamate, Yokohama, JP;
Hideki Kinjo, Sagamihara, JP;
Akihito Chikenji, Machida, JP;
Takeaki Nakayama, Machida, JP;
Oliver C. Mullins, Ridgefield, CT (US);
Soraya S. Betancourt, Cambridge, MA (US);
Michael O'keefe, Tasmania, AU;
Chengli Dong, Sugar Land, TX (US);
Toru Terabayashi, Sagamihara, JP;
Tsutomu Yamate, Yokohama, JP;
Hideki Kinjo, Sagamihara, JP;
Akihito Chikenji, Machida, JP;
Takeaki Nakayama, Machida, JP;
Oliver C. Mullins, Ridgefield, CT (US);
Soraya S. Betancourt, Cambridge, MA (US);
Michael O'Keefe, Tasmania, AU;
Chengli Dong, Sugar Land, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A method of downhole characterization of formation fluids is provided. The method includes: estimating a rough value of the bubble point pressure of the formation fluids; depressurizing the formation fluids at a first speed to a certain pressure which is a predetermined value higher than the estimated rough value while the formation fluids are isolated in a portion of the flowline; and depressurizing the isolated fluids at a second speed which is slower than the first speed in order to measure a precise value of the bubble point pressure.