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:
Jul. 17, 1984
Filed:
Apr. 27, 1981
Everett H Smith, Houston, TX (US);
Neil H Akkerman, Kingwood, TX (US);
Baker International Corporation, Orange, CA (US);
Abstract
A valve apparatus for use in an intermittent gas lift subterranean well, having a reservoir with insufficient pressure for continuous delivery of produced fluids to the top surface of the well is disclosed. A valve apparatus carriable on a fluid transmission conduit has a flow passage for permitting produced fluids to flow through the transmission conduit from the reservoir. The valve is responsive to pressure to open the valve in the presence of a greater pressure exerted by the reservoir below the valve, and to close the valve in response to an even greater pressure generated by intermittent gas injection. A second flow passage selectively communicating with a radially extending port permits the flow of injected fluids from the tubing into the reservoir. A second valve, for selectively opening and closing the second flow passage, is spring biased in the closed position so that it remains closed when subjected to reservoir pressure, intermittent gas pressure, or their sum. The second valve is, however, opened in response to a greater pressure force due to an applied pressure including the pressure of injected fluids. The second valve comprises oppositely facing abutting shoulders, with one shoulder being biased into abutting relationship with the other shoulder for closing the port.