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:
Nov. 15, 1988
Filed:
Mar. 26, 1986
William H Petersen, Kingwood, TX (US);
Shell Offshore Inc., Houston, TX (US);
Abstract
A well valve assembly is disclosed for the control of well fluids that flow in the tubing and the annulus of a well. The well valve assembly consists of two parts, the first part being a housing that forms a portion of the well that has flow openings defined between the tubing and the annulus. The second portion of the well valve apparatus comprises a valve insert that may be lowered down through the well tubing and latched in a position adjacent the housing means. By proper selection and location of seals and flow passages on the valve insert well fluids in the tubing and the annulus may be controlled in a predetermined manner. Since valve inserts having different configurations may be interchanged within the same housing, the well valve assembly may interchangeably direct the flow of fluids within the well.