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:
Aug. 04, 1987
Filed:
May. 15, 1986
Applicant:
Inventors:
Prabodh Pathak, Plano, TX (US);
Stephen J Salter, Dallas, TX (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166271 ; 166245 ; 166273 ; 166299 ; 166308 ;
Abstract
The effective permeability of subterranean hydrocarbon bearing formations with respect to surfactant and drive fluid injection processes is enhanced by preceding the surfactant fluid injection step with creation of multiple formation fractures using tailored pressure pulses produced by gas generating propellant canisters disposed in the injection well. Fluid injectivity rates are increased by subsequent fracture extensions provided by repeated steps of generating high pressure gas pulses at selected intervals.