Low toxicity terpene drilling fluid and drilling fluid additive

Details Low toxicity terpene drilling fluid and drilling fluid additive Low toxicity terpene drilling fluid and drilling fluid additive

1994-02-23

1996-08-20

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

507905, C09K 702

Patent

active

055479251

ABSTRACT:
A water based drilling fluid comprises 1-8% of an additive comprising saturated terpene, a mixture of saturated terpenes or a mixture of saturated and unsaturated terpenes. The drilling fluid is substantially non-toxic and has an LC-50 greater than 30,000 ppm and preferably greater than 100,000 ppm. The most economic additives are a mixture of saturated and unsaturated terpenes and have at least 30% saturated terpenes. The drilling fluid has the advantage of low toxicity over unsaturated terpene drilling fluids.

REFERENCES:
patent: 2604448 (1952-07-01), Wilson
patent: 4409108 (1983-10-01), Carney et al.
patent: 5010109 (1991-04-01), Inoi

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