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:
Aug. 06, 2013
Filed:
Jan. 19, 2010
Applicant:
Nathan Church, Missouri City, TX (US);
Inventor:
Nathan Church, Missouri City, TX (US);
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/00 (2006.01); E21B 49/10 (2006.01); E21B 49/08 (2006.01);
U.S. Cl.
CPC ...
E21B 49/10 (2013.01); E21B 49/081 (2013.01);
Abstract
In a formation pressure tester tool, an elongated filter piston possibly having a tapered or sharp edge configured to penetrate mud cake while the probe is being set. At the end of the setting sequence, the filter piston is retracted, thus opening a flowpath from the formation, through the mudcake, to the probe.