Inventor
DELLINGER THOMAS B
US16 patents
Patents
16 patentsUS4754819AJul 5, 1988
Method for improving cuttings transport during the rotary drilling of a wellbore
MOBIL OIL CORP80 citations96
US4697651AOct 6, 1987
Method of drilling deviated wellbores
MOBIL OIL CORP62 citations96
US4386665AJun 7, 1983
Drilling technique for providing multiple-pass penetration of a mineral-bearing formation
MOBIL OIL CORP92 citations96
US4384625AMay 24, 1983
Reduction of the frictional coefficient in a borehole by the use of vibration
MOBIL OIL CORP204 citations96
US4384616AMay 24, 1983
Method of placing pipe into deviated boreholes
MOBIL OIL CORP103 citations96
US4577701AMar 25, 1986
System of drilling deviated wellbores
MOBIL OIL CORP63 citations94
US4428441AJan 31, 1984
Method and apparatus for reducing the differential pressure sticking tendency of a drill string
MOBIL OIL CORP55 citations92
US4384483AMay 24, 1983
Preventing buckling in drill string
MOBIL OIL CORP57 citations91
US4373592AFeb 15, 1983
Rotary drilling drill string stabilizer-cuttings grinder
MOBIL OIL CORP51 citations91
US4573540AMar 4, 1986
Method for drilling deviated wellbores
MOBIL OIL CORP52 citations89
US4577700AMar 25, 1986
Method and system for displacing drilling fluid from a drill string in a well drilling system
MOBIL OIL CORP22 citations78
US4719977AJan 19, 1988
Method of drilling deviated wellbores
MOBIL OIL CORP10 citations73
US4646855AMar 3, 1987
Method for raising and lowering a drill string in a wellbore during drilling operations
MOBIL OIL CORP13 citations73
US4643264AFeb 17, 1987
Method for reducing drilling torque in the drilling of a deviated wellbore
MOBIL OIL CORP11 citations73
US4246975AJan 27, 1981
Wellbore drilling technique using eccentric tool joints to mitigate pressure-differential sticking
MOBIL OIL CORP12 citations73
US4431068AFeb 14, 1984
Extended reach drilling method
MOBIL OIL CORP13 citations72