Regularities of natural curvature of core boreholes
Abstract
The complex geological structure of the Bakal area causes intensive zenith and azimuthal deflections of core drilling boreholes, 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 deflection of a large number of core drilling boreholes some regularities of their natural deflection are established. Using the established regularities, it is possible to carry out more accurate and directed drilling of core boreholes. 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).
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References
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