METHOD FOR PREDICTING RATE OF PENETRATION USING BIT-SPECIFIC COEFFICIENTS OF SLIDING FRICTION AND MECHANICAL EFFICIENCY AS A FUNCTION OF CONFINED COMPRESSIVE STRENGTH
摘要
申请公布号
EP1836509(A2)
申请公布日期
2007.09.26
申请号
EP20050853623
申请日期
2005.12.09
申请人
CHEVRON U.S.A., INC.
发明人
CALHOUN, WILLIAM, MALCOLM;CAICEDO, HECTOR, ULPIANO;EWY, RUSSELL, THOMAS
