Abstract: In consideration of technical challenges in the drilling and completion of deep volcanic rock and glutenite, tight oil horizontal wells, infill wells in high water cut oilfield and ultra-shallow horizontal wells for heavy oil development, the Daqing Oilfield Company conducted a series of research programs during the 12th Five-Year Plan period. The programs relate to technologies for drilling and completion in complex formations, MWD and control technology, key technologies and instruments for high-speed and high-efficiency drilling of deep wells, drilling fluid and cementing technology, sophisticated drilling and completion technologies. All were conducted with the unique characteristics of the Daqing Oilfield to satisfy the field’s unique technical demands in order to improve the drilling rate and efficiency as well as lower costs. These technologies have promoted the development of drilling and completion technologies significantly. During the 13th Five-Year Plan period, more research will be carried out in following the three areas:deep hard-to-drill formations, in-fill wells in complex blocks and unconventional hydrocarbon resources, to develop state-of-the-art technologies, in order to meet the needs of economic and high-efficiency development for deep reservoirs and those oilfields with low porosity, low permeability and low saturation, and achieve the strategic objectives of annual 4 000×104 t equivalent hydrocarbon production. In addition, these technologies may continuously promote the advancement and development of drilling and completion technologies in the Daqing Oilfield, and to provide necessary technical supports for healthy and sustainable development of the Daqing Oilfield.