Trajectory Control Technology of the Shallow Layer Cluster Horizontal Well in Western Margin of the Junggar Basin

摘要

The Pai 601 block of Shengli Oilfield in the western margin of the Junggar basin is the key block of capacity building in the Junggar basin, due to shallow kick-off points, strong anisotropy of oblique section of strata and the development of reservoir calcareous intercalation leads to very outstanding problem of Well trajectory control. Through using method of optimizing the KOP anddrilling well path design method which correct the dogleg that based on the steerable BHA and formation anisotropy, combiningbuildup section and horizontal landing phase of the BHA and drilling parameters optimization, which has solved the problem of shallow layer cluster horizontal well trajectory control in western margin of the Junggar basin. Through the technology applications of the 200 shallow horizontal wells, a set of shallow horizontal well trajectory control technology which was suitable to the west margin of in Junggar basin was formed.