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:
May. 05, 1987
Filed:
Apr. 25, 1986
James D Ashford, Anchorage, AK (US);
James K Eastlack, Anchorage, AK (US);
Gary D Herring, Anchorage, AK (US);
William N Wilson, Plano, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A squeeze silicate operation carried out through a coiled tubing for sealing upper perforations in a well casing to prevent flow of excess gas. A sodium silicate mixture is used which has a diverter material therein which rapidly builds a filter cake on the formation as the silicate is squeezed through the perforations. This filter cake forms a barrier which, in turn, prevents further flow of silicate into the formation. This effectively limits the depth of penetration of the silicate into the formation while still providing a good seal against flow through the squeezed perforations.