G01V 11 - Prospecting or detecting by methods combining techniques covered by two or more of main groups

Patents for G01V 11 - Prospecting or detecting by methods combining techniques covered by two or more of main groups (3,215)
03/1977
03/15/1977	US4012712 System for telemetering well logging data
03/01/1977	US4009609 Method and apparatus for testing a subsurface formation for fluid retention potential
01/1977
01/04/1977	US4001775 Automatic bit synchronization method and apparatus for a logging-while-drilling receiver
12/1976
12/14/1976	US3997867 Well bore data-transmission apparatus
11/1976
11/16/1976	US3991850 Noise-attenuating positioners for acoustic well-logging tools
11/09/1976	US3990297 Process and device for the determination of the characteristics of the geological formations traversed by a borehole
10/1976
10/12/1976	US3986163 Methods and apparatus for recording well logging measurements
09/1976
09/21/1976	US3982224 Method and apparatus for transmitting downhole information from a well
09/14/1976	US3980881 Simultaneous logging system for deep wells
09/07/1976	US3978588 Magnetic wire line marking, erasing and detecting method and apparatus
08/1976
08/17/1976	US3975674 Geothermal exploration method utilizing electrical resistivity and seismic velocity
06/1976
06/29/1976	US3965751 Integrated magneto-seismic sensor
06/01/1976	US3961320 Intrusion detection systems
03/1976
03/30/1976	US3946604 Methods and apparatus for determining characteristics of subsurface earth formations
01/1976
01/27/1976	US3935556 Dual function logging tool and method