Technique for Improving ROP and Benefit in Zhongguai Uplift Area of Xinjiang Oilfield

In order to improve ROP and economic benefit in Zhongguai uplift block, a new technique was worked out by analyzing the data of drilling, mud logging, logging and well testing etc. from offset wells. According to the logging data from offset wells, rock mechanics has been studied and drilling bit has been optimized. Content of inhibitor, capsuling agent and asphalt materials was increased in drilling fluids, and LCM and gelling agent were also added to raise the capability of inhibition, anti-caving and curing losses. Based on the formation fracturing pressure and the wellbore stability, the well profile and casing program can be determined. Casing program of 7 exploration wells was changed from three phases into two phases, the average ROP was increased by 48.07%, and average monthly drilling footage was increased by 40.69%, drilling cost was saved up to RMB 19.56 million. Application of the technique for improving ROP has laid a foundation for high efficiently exploration and development in Zhoingguai uplift block, and provided a good technical reference for exploration in other similar oilfields.