07461547 is referenced by 60 patents and cites 54 patents.

Methods and apparatus for downhole analysis of formation fluids by isolating the fluids from the formation and/or borehole in a pressure and volume control unit that is integrated with a flowline of a fluid analysis module and determining fluid characteristics of the isolated fluids. Parameters of interest may be derived for formation fluids in a static state and undesirable formation fluids may be drained and replaced with formation fluids that are suitable for downhole characterization or surface sample extraction. Isolated formation fluids may be circulated in a loop of the flowline for phase behavior characterization. Real-time analysis of the fluids may be performed at or near downhole conditions.

Title
Methods and apparatus of downhole fluid analysis
Application Number
11/203932
Publication Number
7461547 (B2)
Application Date
August 15, 2005
Publication Date
December 9, 2008
Inventor
Hani Elshahawi
Houston
TX, US
Andrew L Kurkjian
Sugar Land
TX, US
Oliver C Mullins
Ridgefield
CT, US
Tsutomu Yamate
Yokohama
JP
Akihito Chikenji
Paris
FR
Toru Terabayashi
Sagamihara
JP
Agent
Dale Gaudier
Jaime Castano
Matthias Abrell
Assignee
Schlumberger Technology Corporation
TX, US
IPC
E21B 47/08
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