One target of the Well-1 of Songliao scientific drilling was to gain compound geological section of terrestrial cretaceous with high resolution, which could be comparable on a global scale. The sampling was more accurate up to 10 thousand years instead of million years time resolution in traditional geology. According to the different formations of the main shaft, cemented carbide, PDC and pregnant diamond bits with 12 structures and 2 types of single rotary and double tube core barrels were researched and developed. Disc rotary and PDM + disc rotary technologies were applied to deal with complicated formation of 163041 m in coring drilling, collection rate of 8207% was obtained in undisturbed sand sample and 9492% in coring rate. The paper detailed the difficulties in combination of core barrel structure with drilling string and coring operation, and also introduced the technical measures and the result.