onceptual profiled design for bit selection based on stratigraphic-lithologic characteristics analysis

The stratum of the northeastern area in Sichuan is solid and drilling speed is extremely low. So to increase the drilling speed in the area is very important to conduct research on bit selection selectively. Using the method integrating geoscientific research with bit selection research, analysis is made on the stratigraphic-lithologic characteristics of all geological intervals in the area, the effect on bit selection and how to increase drilling speed is made clear. Based on the above, the conceptual profiled design for bit selection and drilling methods of all geological intervals is proposed on the basis of the stratigraphic-lithologic characteristics. The research in this paper has been approved by related personnel from production and research units, and the research result has been applied. The research concept and method will enable the research integrating the geoscientific research with the drilling technology research to be conducted further.