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.

Date of Patent:
Jun. 11, 2019

Filed:

Feb. 13, 2015
Applicants:

Shiva Paramhans, Houston, TX (US);

David A. Hejl, Houston, TX (US);

Russell W. Mceacharn, Houston, TX (US);

Inventors:

Shiva Paramhans, Houston, TX (US);

David A. Hejl, Houston, TX (US);

Russell W. Mceacharn, Houston, TX (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 49/08 (2006.01); E21B 49/10 (2006.01);
U.S. Cl.
CPC ...
E21B 49/10 (2013.01);
Abstract

An extendable probe for a formation testing tool includes a piston housing having a first diameter portion and a second diameter portion thereof. A piston including a piston base and a piston conduit. A piston base seal disposed between the piston base and the first diameter portion of the piston housing. The piston base seal representing an area; a piston conduit seal disposed between the piston conduit and the second diameter portion, the piston conduit seal representing an area. A pin in operative communication with the piston housing and extending though the piston; a pin seal disposed between the pin and the piston base, the pin seal representing an area; and wherein the piston conduit seal. Piston base seal and pin seal each are configured to adhere to the equation: piston conduit seal area=piston base seal area−pin seal area. A method for querying a formation fluid.


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