Along with the sustainable construction and production in Daniudi gas field in Northern Erdos work area, the large scale application has become the major technology in gas field development. But because of the unfavorable factors of lithological changes, rock drillability differences, instability of mud stone and leakage in light fracture and low pressure reservoir; the uncertain factors of lubrication performance of drilling fluid, cuttings carrying capacity and the removal of cutting bed; as well as the collapsing block-falling in drilled mudstone coal seam and some others, there were still many difficulties to improve the drilling efficiency. Based on the systematically analysis on these bottlenecks, the technical schemes were put forward.