[牙轮钻头工作力学英文版]·马德坤·石油工业社版

【牙轮钻头工作力学英文版】马德坤石油工业.pdfThe Operational Mechanics of The Rock Bit Written By Ma Dekun Translated by Ma Dekun,Jiao Peilin and revised by Wang Yunchang Petroleum Industry PressCONTENTS PREFACEFOREWORDChapter 1 Introduction1 A brief history and prospect of the developmentofrockbit1 The progress of the research and design of rock bitChapter 2 The Geometry of The Rock Bit2 The traditional geometry of rock bit2.PREFACE The quality and performance of the roller bit, an important tool in oil well drilling,bear great impact upon the rate of penetration(ROP) and drilling ost.Ever since its production first in Shanghai in the mid-1950s, much work has been done in the fields of the material,manufacturing and t
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