Difficulties and Measures for Improving ROP in Hailar Oilfield of Daqing

Due to high dip angle,rich faults,high-abrasive and poor drillability of formation,problems such as low ROP,conflict between deviation prevention and fast drilling,and long drilling cycle occurred during drilling in Hailar Oilfield of Daqing,hindering the progress of exploration and development.To raise ROP and shorten drilling cycle,in view of geologic feature analysis in Hailar Oilfield,improving ROP matching techniques was studied.The main factors blocking the improvement of ROP were determined through historical wells statistics and geologic feature analysis in Hailar Oilfield.In-depth analysis and study of casing program optimization design,well site test of selected drill bits,drilling parameter optimization,compound drilling technology,and vertical drilling techniques had been conducted to find out proper technique measures for the problem mentioned above.Field test of these measures showed the ROP rose by more than 26 percent,drilling cycle shortened by more than 23 percent.Opinions and suggestions are given for the future well drilling in Hailar Oilfiled.