Water-wettable drilling mud additives containing uintaite

Details Water-wettable drilling mud additives containing uintaite Water-wettable drilling mud additives containing uintaite

1992-12-18

1996-02-27

Geist, Gary

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507136, 507118, 507126, C09K 706

Patent

active

RE0351636

ABSTRACT:
A water-based drilling mud additive comprising a preblended combination of about 2 parts of high softening point uintaite, about 1 part of a lower softening point uintaite, about 1 part of causticized lignite, and a strongly lipophilic, non-ionic surfactant is disclosed. This composition decreases shale sloughing and bore-hole instability during drilling of wells.

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Davis II et al., "New Laboratory Tests Evaluate the Effectiveness of Gilsonite as a Borehole Stabilizer," IADC/SPE 17203 (1988) pp. 235-246.
Cagle et al., "Gilsonite stabilizes sloughing shales," The Oil and Gas Journal, Mar. 27, 1972, pp. 61-64.
Simpson et al., "Downhole Simulation Cell Shows Unexpected Effects of Shale Hydration on Borehole Wall," IADC/SPE 17202 (1988) pp. 223-234.

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