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:
Oct. 27, 2009
Filed:
Nov. 14, 2005
Stephane Vannuffelen, Tokyo, JP;
Takeaki Nakayama, Machida, JP;
Tsutomu Yamate, Yokohama, JP;
Toru Terabayashi, Sagamihara, JP;
Akira Otsuka, Machida, JP;
Kentaro Indo, Machida, JP;
Stephane Vannuffelen, Tokyo, JP;
Takeaki Nakayama, Machida, JP;
Tsutomu Yamate, Yokohama, JP;
Toru Terabayashi, Sagamihara, JP;
Akira Otsuka, Machida, JP;
Kentaro Indo, Machida, JP;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
An apparatus for performing real-time analysis of a subterranean formation fluid includes a light source configured to transmit at least a sample signal through a sample of the subterranean formation fluid and a reference signal, at least one photodetector configured to continuously detect the sample and reference signals, and an electronics assembly configured to compensate for drift in the detected sample signal in real-time based on the value of the detected reference signal.