Method and apparatus for measurement of azimuth of a borehole while drilling
摘要
A method and apparatus is presented for measuring the azimuth angle of a borehole being drilled, the data for determining the azimuth angle being obtained while the drillstring is rotating.
申请公布号
US4894923(A)
申请公布日期
1990.01.23
申请号
US19870054552
申请日期
1987.05.27
申请人
ALCAN INTERNATIONAL LIMITED;TELECO OILFIELD SERVICES INC
发明人
COBERN, MARTIN E.;DIPERSIO, RICHARD D.;HAMLIN, EDMUND M.
