Title: Method of acidizing subterranean formations

Abstract: A subterranean formation is treated by injecting into the formation an aqueous acid solution comprising a water soluble vinyl compound (preferably polyvinyl alcohol or polyvinylpyrrolidone), a natural gum (preferably guar gum or gum karaya) and finely divided particulate material (preferably silica sand).

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Inventors: Nierode, Dale E. (Houston, TX, US)
Kehn, Donald M. (Houston, TX, US)
Kruk, Keith F. (Houston, TX, US)

Application Number: 513807
Filing Date: 1974-10-10
Publication_date: 1976-01-27
Assignee: Exxon Production Research Company (Houston, TX)
Primary Class(es): 166/282 166/283, 166/307, 166/308.1
Other Classes:
US Patent Ref:

2891619	Jun, 1959	Sneary	166/282.
3153450	Oct, 1964	Foster et al.	252/8.
3252904	May, 1966	Carpenter	166/283.
3319716	May, 1967	Dill	166/282.
3434971	Mar, 1969	Atkins	252/8.
3710865	Jan, 1973	Kiel	166/283.
3757863	Sep, 1973	Clampitt et al.	166/307.
3760881	Sep, 1973	Kiel	166/308.
3781203	Dec, 1973	Clark et al.	166/307.
3791446	Feb, 1974	Tate	166/307.
3799266	Mar, 1974	Kiel	166/307.

Other Refs:
Primary Examiner: Novosad, Stephen J.
Assistant Examiner:
Attorney: Graham; Robert L.