| 4816674 |
Determining a formation porosity from neutron logging information |
Darwin V. Ellis, Charles Flaum |
1989-03-28 |
| 4810876 |
Logging apparatus and method for determining absolute elemental concentrations of subsurface formations |
Peter Wraight, Russel C. Hertzog, Darwin V. Ellis, Jeffrey S. Schweitzer, James A. Grau |
1989-03-07 |
| 4524274 |
Methods and apparatus for investigating an earth formation and compensating for borehole environmental effects |
— |
1985-06-18 |
| 4486658 |
Water flow well logging sonde and method of water flow sensing |
Ronald L. Campsey; |
1984-12-04 |
| 4445033 |
Methods and apparatus for environmental correction of thermal neutron logs |
William E. Preeg |
1984-04-24 |
| 4228350 |
Method and apparatus for measuring underground fluid flow characteristics |
Hans J. Paap, Albert P. Richter, Jr., Harold E. Peelman, Dan M. Arnold |
1980-10-14 |
| 4191884 |
Determination of water saturation in subsurface earth formations adjacent well boreholes |
— |
1980-03-04 |
