In order to ensure safe drilling and shorten the drilling period of the first bedrock risk exploration horizontal well in Songliao Basin, optimum design of the borehole trajectory, casing program, drilling speed increase and prevention of complex incidents were carried out, calculation methods of internal compressive strength of casing at different well sections were established, and effective technical measures were determined. Geological targets were determined through the seismic profile. According to the statistics of actual drilling in the adjacent wells where 1.5° motor was used in the well drilling design, and the build rate was controlled at (5°～7°)/30m, the borehole trajectory was accordingly designed. Based on the difference in compressibility coefficients of gas and fluid, the compressive strength of casings with different spud was studied, and it was found that the bottom of production casing was the weak point, while for the other casing the weak point was at the wellhead. On the basis of geological prediction, the drilling speed was increased by 13.38% over adjacent wells by adopting the composite bit and strengthening drilling parameters, and circulation loss was reduced by 247m3 by using compound plugging technology and complete process. Through the research and application of the above technology, the drilling time of Well Longping1 was shortened by 21.16 days compared with the adjacent wells, which provides technical support for the exploration and development of bedrock weathered crust in Songliao Basin and provides a basis for the implementation of similar wells in the future.