Method of drilling with fluid including nut cork and drilling fl

Boring or penetrating the earth – Processes – Boring with specific fluid

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507104, E21B 700, C09K 706

Patent

active

054840287

ABSTRACT:
The cork or pith portion of various nuts is utilized as a seepage loss reducing additive without increasing, and in some cases reducing, the viscosity of the drilling mud used in drilling boreholes.

REFERENCES:
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patent: 5071575 (1991-12-01), House et al.
patent: 5076944 (1991-12-01), Cowan et al.
patent: 5134118 (1992-07-01), Patel et al.
patent: 5147852 (1992-09-01), Cowan et al.
patent: 5180020 (1993-01-01), Fuh et al.

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