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. 20, 1987
Filed:
Jan. 10, 1986
Gabriel D Hernandez, Maracaibo-Edo. Zulia, VE;
Maraven, S.A., Caracas, VE;
Abstract
A blowout preventer for use in combination with a deep well pump during steam injection, comprises a hollow cylindrical nipple having a top and bottom surface and a through cylindrical bore of diameter D.sub.1. A cylindrical mandrel is partially received in the cylindrical bore provided in the nipple. The cylindrical mandrel has a first diameter portion of diameter D.sub.2, a second diameter portion of diameter D.sub.3 and a third diameter portion of diameter D.sub.4 wherein D.sub.2 >D.sub.1 >D.sub.3 >D.sub.4 such that the first diameter portion abuts the bottom surface of the nipple upon an excess in well head pressure so as to prohibit blowout. An elastically deformable seal is carried on the third diameter portion of the mandrel for sealing the mandrel within the cylindrical bore of the hollow cylindrical nipple, in order to prevent steam leakage during the steam injection process.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile