Environmentally Friendly Solvent Systems/Surfactant Systems For Drilling Fluids
AssigneeRhodia Operations
InventorsManilal S. DAHANAYAKE, Subramanian KESAVAN, David FLUCK
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Abstract
A oil field production fluid, namely a drilling mud composition, comprising a mixture of: (a) at least one base oil component; and (b) an additive component comprising a blend of dibasic esters. The functional fluid can optionally comprise additional additive components. The blend of dibasic esters comprises two or more of dialkyl methylglutarate, dialkyl adipate, dialkyl ethylsuccinate, dialkyl succinate, dialkyl glutarate.
Claims25
An additive composition for use in a drilling fluid composition comprising (i) dialkyl methylglutarate and (ii) dialkyl ethylsuccinate, wherein the alkyl groups individually comprise C1-C12 hydrocarbon groups.
An oil-based drilling fluid composition comprising:
- a) at least one environmentally friendly base oil;
- b) a blend of dibasic esters;
- and
- c) optionally, at least one emulsifier.
A method of formulating a drilling mud composition comprising:
- a) obtaining an environmentally friendly base oil;
- and
- b) contacting a blend of dibasic esters with the base oil.
Dependencies are inferred from the claim text.