Well drilling position selection method in consideration of coal seam crushing degree

The invention discloses a well drilling position selection method in consideration of a coal seam crushing degree, and belongs to the field of coalbed methane drilling engineering. A bulk rock core is obtained from a coal seam drilling hole of a block to be drilled to determine rock type coefficients and geology strength indexes of coal rocks; the experimental sample processing is performed for the obtained bulk rock core to obtain multiple sets of standard cylinder coal rock core samples; the uniaxial compressive strength test is performed for the obtained multiple sets of coal rock cores by an uniaxial compressive strength tester, and the average value of multiple sets of test values serves as the uniaxial compressive strength of the coal rocks in the block to be drilled; a coal rock crushing coefficient formula is determined according to the Hoek-Brown criterion for evaluating the coal seam crushing degree; and a ground stress field of the coal seam in the bock to be drilled is determined according to a multiple linear regression method, and the maximal main stress value, the minimal main stress value, the uniaxial compressive strength and the rock body coefficient of each unit of the coal seam of the block to be drilled are substituted into the coal rock crushing coefficient formula to calculate the crushing coefficient of the coal seam of the block to be drilled.