Tianye-1 well is a geological survey well for shale gas， which deployed in the southern Tianba anticlinal core of the South Daba Mountain curved fold belt， Chongqing. The design purpose is to complete the selection of shale gas favorable target areas in the southern Marine shale area， explore new strata， and collect the basic geological data of shale in the mineral area. In view of the probleums of the design dip angle of the opening rock is changed due to steep dip， the wall spalling instability caused by the strong water sensitivity of shale， the high pressure and H₂S and CO gas penetration corrosion in the inner well， and the induced blowout. Technologies are adopted such as the high density drilling fluid technology， CHD127mm wireline coring technology and gyro inclinometer combined with eccentric wedge orientation to increase the thickness of drill pipe joint to improve the strength of drill pipe. The safety hazards such as high pressure overflow， drill pipe fracture， H₂S and CO gas penetration， etc. are well solved， the well inclination is controlled， and the geological survey coring task of the well is successfully completed. This paper summarizes some technical experience and problems exist in the drilling process， and provides reference experience for similar projects.