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. 13, 2011
Filed:
Oct. 25, 2004
Scott C. Strattan, Broken Arrow, OK (US);
Jeffrey K. Adams, Broken Arrow, OK (US);
Thomas S. Myerley, Broken Arrow, OK (US);
Jason Ives, Broken Arrow, OK (US);
Jeffrey C. Williams, Cypress, TX (US);
Scott C. Strattan, Broken Arrow, OK (US);
Jeffrey K. Adams, Broken Arrow, OK (US);
Thomas S. Myerley, Broken Arrow, OK (US);
Jason Ives, Broken Arrow, OK (US);
Jeffrey C. Williams, Cypress, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
Disclosed herein is a safety valve with a chemical injection configuration. The device includes a hydraulic fluid pressure operated piston at the housing. The device further includes a flow tube in operable communication with the piston and a chemical injection configuration disposed within the housing. Further disclosed herein is a method of maintaining the operation of a safety valve by injecting chemical fluid through a configuration within the safety valve. Still further disclosed herein is check valve. The check valve includes a seal, a dart having a closed head and sealable against the seal, one or more flutes on the dart, and a spring applying a biasing force to the dart to a sealing position, that force being overcomeable by a fluid pressure acting in a direction opposing the spring force.