Drilling fluid

Details Drilling fluid Drilling fluid

2006-10-18

2008-03-04

Caldarola, Glenn (Department: 1764)

Mineral oils: processes and products

Tar sand treatment with liquid

C208S391000, C208S435000

Reexamination Certificate

active

07338593

ABSTRACT:
A drilling fluid for use in high oil viscosity formations containing tar, sand and oil entrained therein. The drilling fluid can be comprised of a polymer in an amount from between 0.05% and 5% by volume, a solvent in an amount from between 1% and 20% by volume and de-emulsifier in an amount from between 0.05% and 10% by volume.

REFERENCES:
patent: 4822481 (1989-04-01), Taylor
patent: 6339048 (2002-01-01), Santhanam et al.
patent: 6455474 (2002-09-01), Wittenbrink et al.
patent: 6489270 (2002-12-01), Vollmer et al.
patent: 6489272 (2002-12-01), Gatlin
patent: 6518224 (2003-02-01), Wood
patent: 6746599 (2004-06-01), Cymerman et al.

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