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. 04, 2007
Filed:
May. 19, 2005
Lalitha Venkataramanan, Ridgefield, CT (US);
Go Fujisawa, Sagamihara, JP;
Bhavani Raghuraman, Wilton, CT (US);
Oliver Mullins, Ridgefield, CT (US);
Andrew Carnegie, Abu Dhabi, AE;
Ricardo Vasques, Sugar Land, TX (US);
Chengli Dong, Sugar Land, TX (US);
Kai Hsu, Sugar Land, TX (US);
Michael O'keefe, Loddefjord, NO;
Henri-pierre Valero, Danbury, CT (US);
Lalitha Venkataramanan, Ridgefield, CT (US);
Go Fujisawa, Sagamihara, JP;
Bhavani Raghuraman, Wilton, CT (US);
Oliver Mullins, Ridgefield, CT (US);
Andrew Carnegie, Abu Dhabi, AE;
Ricardo Vasques, Sugar Land, TX (US);
Chengli Dong, Sugar Land, TX (US);
Kai Hsu, Sugar Land, TX (US);
Michael O'Keefe, Loddefjord, NO;
Henri-Pierre Valero, Danbury, CT (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Methods and systems are provided for downhole analysis of formation fluids by deriving fluid properties and associated uncertainty in the predicted fluid properties based on downhole data, and generating answer products of interest based on differences in the fluid properties. Measured data are used to compute levels of contamination in downhole fluids using an oil-base mud contamination monitoring (OCM) algorithm. Fluid properties are predicted for the fluids and uncertainties in predicted fluid properties are derived. A statistical framework is provided for comparing the fluids to generate, in real-time, robust answer products relating to the formation fluids and reservoirs thereof. Systematic errors in measured data are reduced or eliminated by preferred sampling procedures.