75557898
Sep 22, 1998
APPARATUS AND DEVICES FOR THE PRODUCTION OF NATURAL GAS AND CRUDE OIL, NAMELY, MECHANIZED DRILLING AND PRODUCTION RIGS, PRODUCTION CASINGS AND PRODUCTION TREES; POWER-OPERATED MACHINE AND MACHINE TOOL PARTS FOR EARTH DRILLING AND DEEP DRILLING, NAMELY, DRILL BITS, DRILLS, UNDER REAMERS, DEFLECTORS, DOWN HOLE ROTARY DRILLING MOTORS, PACKERS, ARTICULATED DRILL STRINGS, NON-MAGNETIC DRILL COLLARS AND PARTS THEREFOR
MachineryINSTRUMENTS FOR RECORDING AND DIRECTIONAL DRILLING, NAMELY, STEERING APPARATUS, BOREHOLE NAVIGATORS, PROBES, WELLBORE INCLINOMETERS, DATA RECORDERS FOR USE IN WELLS, ELECTRONIC INSTRUMENTS FOR RECORDING GAMMA-RAY ACTIVITY, ELECTRONIC INSTRUMENTS WHICH MEASURE INCLINATION AND AZIMUTH OF THE BOREHOLE, ROLL ANGLE OR TOOL FACE OF A DOWNHOLE DRILLING MOTOR, DOWNHOLE TEMPERATURE, DOWNHOLE PRESSURE, GAMMA-RAY AND ELECTRIC CONDUCTIVITY OF DOWNHOLE FORMATION WHILE DRILLING, SIGNAL TRANSMITTERS, AND MUD PULSE TELEMETERS; GEOPHYSICAL AND GEOLOGICAL DEVICES FOR DRILLING OPERATIONS, NAMELY, SEISMOGRAPHS, MAGNETOMETERS, GRAVITY METERS, ACCELEROMETERS AND PARTS THEREFOR
Electrical and Scientific ApparatusDEEP WELL DRILLING FOR PRODUCTION OF NATURAL GAS AND CRUDE OIL; HORIZONTAL DRILLING OF THE HORIZONTAL UNDERPINNING OF EXISTING BUILDINGS, ROADS, RIVER COURSES, FOR LAYING ELECTRICAL AND TELECOMMUNICATIONS CABLES; DIRECTIONAL DRILLING SERVICES
Building Construction and RepairTESTING WELL HOLES FOR LEAKS-OFF AND YIELD OF THE FORMATION; WELL HOLE SURVEYING AND NAVIGATING SERVICES FOR WELL HOLE DRILLING OPERATIONS; GEOPHYSICAL AND GEOLOGICAL MEASURING SERVICES, NAMELY, MEASURING CALIBER AND COURSE OF BOREHOLES, GAMMA-RAY, ELECTRIC CONDUCTIVITY AND STRENGTH OF BOREHOLE FORMATIONS
Computer and Scientific