Method for clay stabilization with quaternary amines
AssigneeHalliburton Company
InventorRonald E. Himes
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Abstract
A method of treating a clay-containing subterranean formation with an aqueous fluid is disclosed. The method features the use of quaternary ammonium compounds as additives to control formation damage caused by contacting the formation with the aqueous fluid.
Claims16
A method of treating a subterranean formation comprising contacting said formation with an aqueous treatment fluid containing a formation control additive in an amount effective to stabilize said formation, said additive comprising a quaternary ammonium compound selected from compounds of the general formulas:
- ##STR15## wherein B represents the group ##STR16## D represents the group ##STR17## and F represents ##STR18## and further wherein:
- R.sub.1 is selected from the groups --CH.sub.2 COOH, --CH.sub.2 CH.sub.2 OH, --CH.sub.2 CH.sub.2 CH.sub.2 OH and --CH.sub.2 CHOHCH.sub.3 ;
- R.sub.2 is selected from the groups --CH.sub.2 CH.sub.2 --, --CH.sub.2 CHOHCH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, and --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --, and
- Z is an anion selected from halides, nitrates, nitrites, sulfites, sulfates and carboxylates.
A method of stimulating the production of hydrocarbons from a clay-containing subterranean formation comprising contacting said formation with an aqueous treatment fluid under conditions sufficient to create at least one fracture in said formation to thereby stimulate the production of hydrocarbons from said formation:
- wherein said aqueous treatment fluid is comprised of an aqueous fluid and a formation control additive present in said treatment fluid in an amount effective to stabilize said formation, said additive comprising a quaternary ammonium compound selected from compounds of the general formulas:
- ##STR19## wherein B represents the group ##STR20## D represents the group ##STR21## and F represents ##STR22## and further wherein:
- R.sub.1 is selected from the groups --CH.sub.2 COOH, --CH.sub.2 CH.sub.2 OH, --CH.sub.2 CH.sub.2 CH.sub.2 OH and --CH.sub.2 CHOHCH.sub.3 ;
- R.sub.2 is selected from the groups --CH.sub.2 CH.sub.2 --, --CH.sub.2 CHOHCH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, and --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --;
- and
- Z is an anion selected from halides, nitrates, nitrites, sulfites, sulfates and carboxylates.
Dependencies are inferred from the claim text.