Methods of treating subterranean zones and treating fluids therefor
AssigneeHalliburton Energy Services, Inc.
InventorsJ. Michael Wilson, Phillip C. Harris
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Abstract
Methods of treating subterranean zones and treating fluids are provided. The methods are basically comprised of preparing or providing a subterranean zone treating fluid comprising an aqueous fluid and an additive for preventing the swelling and migration of formation clays in the subterranean zone selected from the group consisting of 1-carboxy-N,N,N-trimethyl methanaminium chloride, 2-hydroxy-N,N,N-trimethyl ethanaminium acetate, and 2-hydroxy-N,N,N-trimethyl 1-propanaminium acetate.
Claims21
A method of treating a subterranean zone penetrated by a well bore comprising the steps of:
- (a) preparing or providing a subterranean zone treating fluid comprising
- an aqueous fluid,
- one or more salts in an amount up to about 3.5% by weight of the aqueous fluid, and
- an additive for preventing the swelling and migration of formation clays in said subterranean zone selected from the group consisting of 1-carboxy-N,N,N-trimethyl methanaminium chloride, 2-hydroxy-N,N,N-trimethyl ethanaminium acetate, and 2-hydroxy-N,N,N-trimethyl 1-propanaminium acetate;
- and
- (b) introducing said treating fluid into said subterranean zone.
A method of fracturing a subterranean zone penetrated by a well bore comprising:
- preparing or providing a subterranean zone fracturing fluid comprising
- an aqueous fluid,
- a gelling agent,
- one or more slats in an amount up to about 3.5% by weight of the aqueous fluid, and
- an additive for preventing the swelling and migration of formation clays in said subterranean zone selected from the group consisting of 1-carboxy-N,N,N-trimethyl methanaminium chloride, 2-hydroxy-N,N,N-trimethyl ethanaminium acetate, and 2-hydroxy-N,N,N-trimethyl-1-propanaminium acetate;
- introducing said fracturing fluid into said subterranean zone at a rate and pressure sufficient to form one or more fractures in said zone;
- and
- recovering said fracturing fluid from said zone.
Dependencies are inferred from the claim text.