Sodium alkyl PG-dimonium chloride phosphates as lubricating agents in aqueous based drilling fluids
AssigneeColonial Chemical Inc.
InventorsXiangdong Sun, David Anderson, Jr., Robert N. Comber, John W. Baxter
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Abstract
An aqueous based drilling fluid that exhibits improved lubricity, containing a phospholipid lubricant component and methods of improving the lubricity of an aqueous based drilling fluids. The methods include improving the lubricity of an aqueous based drilling fluid composed of an aqueous base fluid, and a weighting agent, with the addition of an effective amount of a phospholipid to substantially reduce the coefficient of friction when compared to the fluid absent the phospholipids.
Claims13
An aqueous based drilling fluids, comprising:
- an aqueous base fluid;
- a weighting agent;
- and
- a phospholipid compound of the following formula:
- wherein:
- R is a C6-C25 hydrocarbon group;
- and wherein when in formulation the counterions present in the phospholipid may exchange with counterions of other ingredients.
A method of drilling a subterranean formation utilizing an aqueous based drilling fluid, wherein the drilling fluid comprises:
- an aqueous base fluid;
- a weighting agent;
- a phospholipid compound of the following formula:
- wherein:
- R is a C6-C25 hydrocarbon group;
- and wherein when in formulation the counterions present in the phospholipid may exchange with counterions of other ingredients.
Dependencies are inferred from the claim text.