Mud shale sample of high-temperature and high-pressure friction resistance tester as well as preparation method and application of mud shale sample

The invention relates to a shale sample of a high-temperature and high-pressure friction resistance tester, and a preparation method and application thereof, belonging to the technical field of oil and gas drilling engineering. The mud shale rock sample of the high-temperature and high-pressure friction resistance tester is an arc-surface cylindrical body; one end face of the arc-surface cylindrical body is an arc surface, and the other end face of the arc-surface cylindrical body is a plane; one side surface of the arc-surface cylindrical body is a concave arc surface; the porosity of the shale sample is 4-5%, and the permeability of the shale sample is 0.5-1 * 10 mu m < 2 >. The shale sample comprises the following components in percentage by weight: 5%-10% of quartz powder, 5%-15% of calcite powder, 30%-50% of montmorillonite powder, 10%-30% of illite powder, 5%-15% of chlorite powder and 5%-10% of silicon dioxide particles. The rock sample is in the shape of an arc-surface column, and can meet the r