Regularities of natural curvature of boreholes

Abstract

The complex geological structure of the Bakal area causes intensive zenith and azimuthal curvatures of core drilling wells, which reduces the quality of geological documentation, worsens drilling conditions and increases the cost of drilling operations. From the analysis and generalization of data on curvature of a large number of core drilling wells some regularities of their natural curvature are established. Using the established regularities, it is possible to carry out more accurate and directed string wells. The geological structure of the area includes rocks of the Bakalskaya, Zigalginskaya and Zigazino-Komarovskaya formations. Stratigraphic and lithological characteristics of the main rocks of these formations are as follows (section from top to bottom).