Drilling fluid loss prevention and lubrication additive

Details Drilling fluid loss prevention and lubrication additive Drilling fluid loss prevention and lubrication additive

1996-12-10

1998-10-27

Suchfield, George A.

Boring or penetrating the earth

Processes

Boring with specific fluid

166292, 507140, 507906, 507910, C09K 702, C09K 706, E21B 33138

Patent

active

058266690

ABSTRACT:
A method of preventing or controlling the loss of well drilling fluid into the pores and fractures of subterranean rock formations by the addition of resilient graphitic carbon particles to the drilling fluid in sufficient amounts to plug the pores and fractures. The graphitic carbon material reduces loss of circulation, lowers torque and drag, prevents casing wear while drilling, and provides a new method for the controlled release of graphite at extreme pressure. The material is non-toxic and imparts the well-known lubricating properties of graphite without contributing to surface sheen development under US EPA offshore cuttings discharge rules.

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Hawley's Condensed Chemical Dictionary, Twelfth Edition Van Nostrand Reinhold Company, New York, 1993.

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