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:
Feb. 12, 1985
Filed:
Apr. 25, 1983
David S Pye, Indio, CA (US);
Donald L Ash, Santa Rosa, CA (US);
Robert W Rardin, Santa Rosa, CA (US);
Union Oil Company of California, Los Angeles, CA (US);
Abstract
A method for placing a perforated liner in a well penetrating a reservoir containing a high pressure fluid, for example, a geothermal fluid. The holes in one or more sections of a preperforated liner are temporarily closed by inserting therein hollow plugs having an open flange end at the outer surface of the liner and a closed end projecting into the bore of the liner. The lower end of a first section of liner is also closed as with a solid plug. The liner, made up of one or more of the above-described sections which have been joined together, is run into the well through a pressure sealing device at the wellhead, such as a stripper rubber or rotating head. When the liner has been properly positioned in the well, a cutting or scraping tool is run down the inside of the liner to remove the closed end of each plug projecting into the liner, thus opening the perforations in the liner. Reservoir fluids can be produced through the well around the outside of the liner while the liner is being placed.