04079011 is referenced by 29 patents and cites 9 patents.

The production of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acid-soluble components, such as one containing clays or siliceous minerals as exemplified by sandstone, shale, etc. is stimulated by injecting into the formation a composition comprising an aqueous solution of a mineral acid and a fluorine-containing acid or salt and having dissolved therein a vinylpyrrolidone polymer and, if desired, a small amount of a water-soluble acrylic acid-type polymer. The in-depth increase in the permeability and porosity of the formation achieved utilizing the method of invention results in a substantial improvement in hydrocarbon recovery.

Title
Composition containing a polyvinylpyrrolidone and method for stimulating well production
Application Number
426998
Publication Number
4079011
Application Date
April 26, 1976
Publication Date
March 14, 1978
Inventor
Jack F Tate
Houston
TX, US
Agent
Walter D Hunter
Thomas H Whaley
Carl G Ries
Assignee
Texaco
NY, US
IPC
E21B 43/26
E21B 43/27
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