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:
Oct. 22, 1991
Filed:
Sep. 13, 1990
Marion G Reed, Hacienda Heights, CA (US);
Chevron Research and Technology Company, San Francisco, CA (US);
Abstract
A method is disclosed for improving the effectiveness of fluid transport in a fines-containing earthen formation and inhibiting permeability damage of that formation. Wet steam is generated from a feedwater that contains potassium chloride, enough anhydrous ammonia is added into the steam to produce sufficient ammonium ions in the vapor phase condensate to inhibit permeability damage of the formation in the vicinity of the vapor phase, enough carbon dioxide is added into the steam effective to the pH of the vapor phase condensate between 7.5 and 10.5, the wet steam is injected into the formation, and then the steam is blown down to vaporize liquid water of the formation and cause the vaporized water to leave the portion.