US Patent 7565835 Method and apparatus for balanced pressure sampling

Patent 7565835 was granted and assigned to Schlumberger on July, 2009 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Schlumberger

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7565835

Patent Inventor Names

Simon H. Bittleston0

Christopher S. Del Campo0

Jonathan W. Brown0

Julian J. Pop0

Ashley C. Kishino0

Date of Patent

July 28, 2009

Patent Application Number

11274707

Date Filed

November 15, 2005

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.