A method and apparatus for drilling highly deviated wells is disclosed. A drilling assembly is attached to a drill string. The drilling assembly includes a bent sub, a pony collar attached to the bent sub, a motor with a bent housing, and a bit. Improved survey collars and bits are also disclosed.
申请公布号
US5042597(A)
申请公布日期
1991.08.27
申请号
US19900598583
申请日期
1990.10.15
申请人
BECFIELD HORIZONTAL DRILLING SERVICES COMPANY
发明人
REHM, WILLIAM A.;TRUNK, THOMAS D.;BASEFLUG, TIMOTHY D.;CROMWELL, STEVE L.;HICKMAN, GRADY A.;NICKEL, RALPH D.;LYON, MICHAEL S.
