High quality and fast drilling techniques for unconventional oil and gas reservoirs in Shengli field

The efficient development of unconventional oil and gas, an important strategy succeeding resource, is an important measure to alleviate the shortage of oil and gas resources and guarantee national energy security. The international drilling techniques for unconventional oil and gas reservoirs are introduced. Considering the unconventional oil and gas reservoir characteristics in shengli oilfield, the difficulty of drilling technique is analyzed. Learning from the experience overseas, three core techniques are formed, including drilling engineering design, high quality and fast drilling technology and drilling fluid technology, and field tests are conducted in Shengli oilfield. The application results show that the developed matching techniques can ensure drilling success and high quality. The drilling of four wells has completed and achieved good results, which provide a reference for efficient development of unconventional oil and gas reservoirs domestically.