The use of fractional calcium carbonate in the invert-emulsion drilling fluid to reduce formation damage

This article deals with the possibilities of various additives, proposed for water-based muds (WBM) act as a bridging agents for oil-based muds (OBM), in order to decrease its impact on permeability of porous media.
The article is given in Russian.
«Drilling and Oil», 03/2012
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