Title:
METHODS AND APPARATUS FOR CHARACTERIZATION OF PETROLEUM FLUIDS CONTAMINATED WITH DRILLING MUD
Document Type and Number:
WIPO Patent Application WO/2009/138911
Kind Code:
A3
Abstract:
A method and system for characterizing formation fluids contaminated with drilling mud that compensates for the presence of such drilling mud. The operations that characterize formation fluids contaminated with drilling mud can be carried out in real-time. The operations also characterize a wide array of fluid properties of petroleum samples contaminated with drilling mud in a manner that compensates for the presence of drilling mud. The operations characterize the viscosity and density of petroleum samples contaminated with drilling mud at formation conditions in a manner that compensates for differences between formation conditions and flowline measurement conditions. The operations also derive live fluid density unaffected by contamination of mud filtrate based on a scaling coefficient dependent on measured gas-oil ratio of the formation fluid. This scale factor accounts for excess volume created during mixing processes, which increases the accuracy of characterizations for high gas-oil ratio samples, especially gas condensate.
Inventors:
ZUO YOUXIANG JULIAN (CA)
ZHANG DINGAN DAN (CA)
DONG CHENGLI (US)
MULLINS OLIVER C (US)
O'KEEFE MICHAEL (AU)
ZHANG DINGAN DAN (CA)
DONG CHENGLI (US)
MULLINS OLIVER C (US)
O'KEEFE MICHAEL (AU)
Application Number:
PCT/IB2009/051867
Publication Date:
November 11, 2010
Filing Date:
May 06, 2009
Export Citation:
Assignee:
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER HOLDINGS
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
ZUO YOUXIANG JULIAN (CA)
ZHANG DINGAN DAN (CA)
DONG CHENGLI (US)
MULLINS OLIVER C (US)
O'KEEFE MICHAEL (AU)
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER HOLDINGS
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
ZUO YOUXIANG JULIAN (CA)
ZHANG DINGAN DAN (CA)
DONG CHENGLI (US)
MULLINS OLIVER C (US)
O'KEEFE MICHAEL (AU)
International Classes:
E21B49/08; E21B49/10; G01N33/28
Domestic Patent References:
| WO2008051900A2 | 2008-05-02 |
Foreign References:
| US20040000400A1 | 2004-01-01 | |||
| GB2442087A | 2008-03-26 |
Other References:
DONG C. ET AL: "New downhole fluid analyzer tool for improved reservoir characterization", SPE 108566, 4 September 2007 (2007-09-04), XP002600653
MULLINS O. ET AL: "Real-Time quantification of OBM filtrate contamination during openhole wireline sampling by optical spectroscopy", SPWLA 41ST ANNUAL LOGGING SYMPOSIUM, 4 June 2000 (2000-06-04), XP002600654
MULLINS O. ET AL: "Downhole determination of GOR on single-phase fluids by optical spectroscopy", SPWLA 42ND ANNUAL LOGGING SYMPOSIUM, 17 June 2001 (2001-06-17), XP002600655
MULLINS O. ET AL: "Real-Time quantification of OBM filtrate contamination during openhole wireline sampling by optical spectroscopy", SPWLA 41ST ANNUAL LOGGING SYMPOSIUM, 4 June 2000 (2000-06-04), XP002600654
MULLINS O. ET AL: "Downhole determination of GOR on single-phase fluids by optical spectroscopy", SPWLA 42ND ANNUAL LOGGING SYMPOSIUM, 17 June 2001 (2001-06-17), XP002600655
Attorney, Agent or Firm:
KANAK, Wayne, I. (Edmonton, Alberta T6N 1M9, CA)
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