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:
Jan. 13, 2026
Filed:
May. 01, 2024
Halliburton Energy Services, Inc., Houston, TX (US);
Peter D W Inglis, Arbroath, GB;
David John O'sullivan, Arbroath, GB;
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
The embodiments herein provide a ball valve assembly comprising a ball with an external piston that is biased against the ball to create an external seat at a surface of the ball on the down hole side of the ball as well as an internal piston that is biased against the ball to create an internal seat at a surface of the ball also on the down hole side of the ball. Some embodiments also provide an external gasket that seals between the external piston and the internal piston and an internal gasket that seals between the internal piston and a stationary body. Some embodiments also provide an external spring positioned between the internal piston and the external piston and an internal spring positioned between a stationary body and the internal piston. In some embodiments, the external spring force is the only force acting on the external piston when the valve is sealing off downhole fluid.