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:
Sep. 02, 2025
Filed:
May. 05, 2022
Applicant:
Interwell P&a As, Hafrsfjord, NO;
Inventors:
Torgeir Rusten, Vikhammer, NO;
Gaute Sandvik, Saksvik, NO;
Assignee:
INTERWELL P&A AS, Røyneberg, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); E21B 23/04 (2006.01); E21B 29/02 (2006.01); E21B 36/00 (2006.01);
U.S. Cl.
CPC ...
E21B 33/13 (2013.01); E21B 23/0412 (2020.05); E21B 23/0414 (2020.05); E21B 23/042 (2020.05); E21B 29/02 (2013.01); E21B 36/008 (2013.01);
Abstract
The present invention relates to a downhole pressure equalizer comprising an elongated housing comprising a piston compartment having a first end provided in fluid communication with an outside of the elongated housing and a second end provided in fluid communication with a process chamber of a well tool. A piston device provided in the position compartment comprises an outer piston section slidingly and sealingly engaged with the piston compartment; and an inner piston section slidingly and sealingly engaged within the through bore of the outer piston section.