INVESTIGATION AND DEVELOPMENT OF TECHNOLOGICAL PRINCIPLES OF STEP-WISE SELECTION AND USE OF DRILLING FLUIDS AT DRILLING ON KRASNOLENINSK ROOF (EXEMPLIFED BY TALINSK SITE)

The object of the investigation is compositions of highly-efficient polymer and polymer-clay muds with controllable rheologic properties for unstable clay deposit conditions and high-quality stripping of producing strata with the aim of increasing the drilling rates and reducing the construction costs of holes. Analytical, laboratory and field studies of rheologic and filtration properties of various compositions of polymer fluids have been made. The laws and mechanism of the process of the interaction of drilling fluid filtrates with clay rocks of the hole walls have been established. Their stability time has been assessed, which permitted to scientifically substantiate a step-wise selection of the type of the drilling fluid for the Talin site conditionsAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio