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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.:

US 10024309 B1

PDFFull Text
Date of Patent:
Jul. 17, 2018

Filed:

Apr. 15, 2015

Reciprocating pumps for downhole deliquification systems and pistons for reciprocating pumps

Applicant:

William Michel, Etival Clairefontaine, FR;

Inventor:

William Michel, Etival Clairefontaine, FR;

Assignee:

BP CORPORATION NORTH AMERICA, INC., Houston, TX (US);

Attorney:

Conley Rose, P.C.

Primary Examiner:

Peter J Bertheaud

Assistant Examiner:

Geoffrey Lee

Int. Cl.
CPC ...
E21B 43/12 (2006.01); F04B 43/113 (2006.01); F04B 1/02 (2006.01); F04B 19/22 (2006.01); F04B 47/00 (2006.01); F04B 53/10 (2006.01); F04B 53/14 (2006.01); F16J 1/00 (2006.01); F16K 1/00 (2006.01); F04B 9/111 (2006.01); F04B 9/115 (2006.01); F04B 53/12 (2006.01); F15B 15/22 (2006.01); E21B 43/38 (2006.01); F04B 47/08 (2006.01);
U.S. Cl.
CPC ...
F04B 1/02 (2013.01); E21B 43/129 (2013.01); E21B 43/38 (2013.01); F04B 9/111 (2013.01); F04B 9/115 (2013.01); F04B 53/12 (2013.01); F04B 53/127 (2013.01); F04B 53/129 (2013.01); F04B 53/14 (2013.01); F15B 15/225 (2013.01); F04B 47/08 (2013.01); F15B 2211/755 (2013.01); F15B 2211/77 (2013.01); F15B 2211/7725 (2013.01); F15B 2211/853 (2013.01);
Abstract

A piston includes a piston housing and a decompression valve disposed in the piston housing. The decompression valve includes a valve housing seated in the piston housing and a valve member moveably received by the valve housing. The valve member has a radially outer surface including an annular shoulder. In addition, the piston includes an end cap secured to the first end of the piston housing. A radially inner surface of the end cap includes an annular valve seat. The decompression valve has a closed position with the annular shoulder of the valve member engaging the valve seat of the end cap and an open position with the annular shoulder of the valve member axially spaced from the valve seat of the end cap. The piston also includes a biasing member configured to bias the decompression valve to the closed position.

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