US Patent 7913554 Method and apparatus for balanced pressure sampling

Patent 7913554 was granted and assigned to Schlumberger on March, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Schlumberger

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

79135540

Patent Inventor Names

Simon H. Bittleston0

Christopher S. Del Campo0

Jonathan W. Brown0

Julian J. Pop0

Ashley C. Kishino0

Date of Patent

March 29, 2011

Patent Application Number

124854720

Date Filed

June 16, 2009

Patent Primary Examiner

Hezron Williams

Patent abstract

A method of sampling fluid from a rock formation penetrated by a borehole includes positioning a downhole tool having a flow line in the borehole, establishing an inlet port through which fluid passes from a first point in the formation into the flow line, establishing an outlet port through which fluid passes from the flow line into a second point in the formation, and passing fluid between the formation and the flow line through the inlet and outlet ports.