Phospholipid lubricating agents in aqueous based drilling...

Details Phospholipid lubricating agents in aqueous based drilling... Phospholipid lubricating agents in aqueous based drilling...

2006-08-22

2006-08-22

Gulakowski, Randy (Department: 1712)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S129000, C507S131000, C507S139000, C507S140000, C507S141000, C507S145000, C166S305100

Reexamination Certificate

active

07094738

ABSTRACT:
A method of improving the lubricity of an aqueous based drilling fluid composed of an aqueous base fluid, and a weighting agent. The method involves the addition of an effective amount of a phospholipid to substantially reduce the coefficient of friction when compared to the fluid absent the phospholipids. Preferably the phospholipids have the structure:in which R and R′ are C6to C25hydrocarbon groups; and A is an anion to counter the cationic charge.

REFERENCES:
patent: 4811791 (1989-03-01), Harnoy et al.
patent: 2004/0234484 (2004-11-01), Peffly et al.
patent: WO 01/81498 (2001-11-01), None

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