US 11,746,609 B2
Pressure compensator, method for pressure compensation, and system
Yuh Loh, Cypress, TX (US); and Zhihui Zhang, Katy, TX (US)
Assigned to BAKER HUGHES OILFIELD OPERATIONS LLC, Houston, TX (US)
Filed by Yuh Loh, Cypress, TX (US); and Zhihui Zhang, Katy, TX (US)
Filed on Nov. 15, 2021, as Appl. No. 17/526,512.
Prior Publication US 2023/0151704 A1, May 18, 2023
Int. Cl. E21B 21/08 (2006.01); E21B 47/07 (2012.01); E21B 7/00 (2006.01); E21B 47/13 (2012.01); E21B 47/06 (2012.01)
CPC E21B 21/08 (2013.01) [E21B 7/00 (2013.01); E21B 47/06 (2013.01); E21B 47/07 (2020.05); E21B 47/13 (2020.05); E21B 2200/02 (2020.05)] 12 Claims
OG exemplary drawing
 
1. A pressure compensator system comprising:
a housing configured for connection to a tool creating a contained fluid volume, wherein the tool requires pressure compensation;
an electroactive polymer (EAP) disposed in the housing and defining a volume therein, the EAP volume being changeable upon application of an electric signal, that causes a change in pressure of a fluid in the contained fluid volume to compensate pressure in the tool, during use.