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UDC 628.112.24

Melnikova T. V., Didenko V. G., Yurkiv N. I.

Developing biopolymer drilling mud for water supply well construction

Summary

The results of experimental studies of the effect that different drilling mud compositions produce on the colmatage of a bottom-hole zone are presented. The studies aimed at developing process liquids that preserve the reservoir properties and ensure environmentally safe construction and operation of water supply wells. The use of traditional slurries causes pollution of both the reservoir and bottom-hole zone. The efficient stabilization of the reservoir properties is ensured by the use of non-dispersing biopolymer drilling mud with the addition of acid-soluble sealant that prevents the invasion of filtrate and drilling mud into reservoir, bottom-hole zone, and preserves at most their collecting properties (for 70–80%).

Key words

water well , colmatage , bottom-hole zone , reservoir properties , permeability , drilling mud

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