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《JOURNAL OF THE UNIVERSITY OF PETROLEUM,CHINA》 1998-01
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A METHOD OF FORMATION CLASSIFICATION WHILE DRILLING WITH PDC BITS

Gao Deli, Zhang Hui, Wang Jiaxiang  
Because of fine cuttings while drilling with PDC bits,it is difficult to identify the lithology changes by the way of lithology logging. The balance of forces acting on PDC bit cutter is analyzed,and a model of relations among the formation identification factor and the operational parameters of drilling as well as the bit structural parameters is established.This model can be used to obtain the rules of formation from the data of well logging,production testing and geological information, and also be used to predict formation lithology in combination with MWD data.Application shows that this model is efficient and feasible.
【Fund】: 中国海洋石油总公司渤海石油公司“PDC钻头在地层分层方面的研究”项目
【CateGory Index】: TE132
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