Invention Grant
US5843872A Drilling fluid system and related methods 失效
钻井液系统及相关方法

Drilling fluid system and related methods
Abstract:
A drilling fluid system that combines a carbon black/asphaltite/lignite mixture with a fish oil/glycol mixture; and a method for manufacturing a drilling fluid system that could be utilized with pre-existing water based muds during drilling and excavating applications.
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