Regulation of drilling mud density while drilling an interval of production casing string in West Siberian fields
The paper considers clay stability depending on non-stability of drilling mud density while performing drilling operations before opening of a productive layer and lowering of a casing string at West Siberian fields. Dependence of mechanical speed on carbonate colmatant flow-rate, used for stabilization of drilling mud density is shown. Its stabilization provides maintaining of a wellbore stability as well as improving of drilling technical-economic showings.