PDC bit optimization and complete tool selection for poor cemented sandy gravel formation drilling

Abstract:

The burial depth and complex formation lithology of poor cemented sandy gravel reservoirs make the drilling operation face some difficulties, such as low ROP, reduced footage. The paper studies the technologies of bit optimization and improvement of tool selection to overcome these problems, which achieved good results in drilling at Li567 Block of Shengli Oilfield, in particular with extended service life of the bits. This will provide effective technical reference for the subsequent development of similar blocks.