Well Drilling Experience with Back-Washing under Difficult Hydro-Geological Conditions
Abstract
The paper considers an application of rotary drilling method with clean water back-washing in Stary Oskol Middle Devonian sands in Tolochin-city, Vitebsk Province. Advantages of this drilling method with deep deposition of fine and close sands with speckled clay and siltstone streaks are shown in the paper. The paper analyzes reasons that reduce specific well discharge in the drilling process and gives recommendations on efficient organization of drilling works under difficult hydrogeological conditions.
For citations:
Ivashechkin V.V., Kondratovich A.N., Marchenko A.G., Drozhzha A.T. Well Drilling Experience with Back-Washing under Difficult Hydro-Geological Conditions. Science & Technique. 2005;(3):21-26. (In Russ.)
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