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US 4,374,737 AGranted
Nonpolluting drilling fluid composition
AssigneesDana E. Larson, Ronnie J. Mouton
InventorsDana E. Larson, Ronnie J. Mouton, Chris J. Mocek
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Abstract
Disclosed is a nonpolluting drilling fluid composition. The composition mixture consisting essentially of a concentrate and any nonpolluting oil. The concentrate consists essentially of diethanolamide, a fatty acid, and a imidazoline/amide mixture.
Claims7
A composition for use as a drilling mud when mixed with water which consists essentially of:
- a concentrate consisting essentially of:
- 12.5% to 42.5% by weight of diethanolamide, which consists essentially of ##STR5##
- 40. 0% to 70.0% by weight of a tall oil fatty acid, which consists essentially of ##STR6## and 2.5% to 32.5% by weight of imidazoline/amide mixture, which consists essentially of ##STR7## wherein R is primarily unsaturated straight chain hydrocarbon groups having 17 carbon atoms and is the hydrocarbon residue remaining after removal of the carboxyl group from tall oil fatty acids
- and a bidodegradable, non-polluting oil, wherein the concentrate constitutes a minor amount of the composition sufficient to act as an emulsifier when the composition is added to water.
1 more element
A method of producing an invert emulsion drilling fluid for use in the drilling of wells comprising mixing the following constituents:
- (a) substituted diethanolamide of the formula ##STR8## (b) tall oil fatty acid of the formula ##STR9## (c) imidazoline/amide components consisting essentially of:
- ##STR10## (d) a biodegradable, non-polluting oil;
- and (e) water to form an invert emulsion;
- wherein the constituents (a), (b) and (c) are present in the following by weight percentages relative to the total of constituents (a), (b) and (c),
- (a) 12.5 to 42.5%
- (b) 40 to 70%
- (c) 2.5 to 32.5%
- and wherein the constituents (a), (b) and (c) together are minor proportions of the total constituents (a), (b), (c) and (d) sufficient to act as an emulsifier;
- and wherein R is primarily unsaturated hydrocarbon groups having 17 carbon atoms and is the hydrocarbon residue remaining after removal of the carboxyl group from tall oil fatty acids.
6 more elements
Dependencies are inferred from the claim text.