Studies on Trajectory Control of Cluster Wells during Drilling in Platform A of the East China Sea

Based on the analysis of formation characteristics and the challenge of trajectory control in Platform A of the East China Sea, measures to optimize BHA and control the well trajectory reasonably in each interval was put forward, and these experiences can be used to improve the ability of trajectory control, reduce drilling cycle, ensure the engineering quality, and make full oil field development more efficient in this area in the near future.