DESIGN OF DRILLING FLUID FORMULATIONS ALONG THE DRILLING INTERVALS FOR THE PRIOBSKOYE FIELD
The article considers a project for the construction of a directional well for the geological conditions of the Priobskoye field located in the Khanty-Mansi autonomous region. Wherever a well drilled, it is necessary to comply with the basic requirement for borehole drilling. The desired condition for drilling is drilling with permanent depression on the formation. And even when the drilling process is suspended, it is necessary to comply with this condition. The fundamental cause of this phenomenon is a drilling mud, qualitatively prepared and matched for specific conditions. The aim of the paper is to design the drilling mud formulations along the drilling intervals for the Priobskoye field, as well as to determine the required amount of chemical reagents along the drilling intervals and control the properties of drilling fluids during drilling. Qualitatively prepared and well-chosen solution is 50 % of successful drilling without complications and accidents.