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:
Apr. 06, 1976
Filed:
Feb. 18, 1975
Applicant:
Inventor:
James H Lybarger, New Orleans, LA (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166307 ;
Abstract
The fluid productivity of a relatively unconsolidated oil producing subterranean siliceous reservoir is improved by a limited flow rate sequential injection of oil solvent, relatively dilute hydrogen fluoride-free acid, and relatively dilute hydrogen fluoride containing-acid, and a gradual returning of the well to production.