| 10422920 |
Formation characterization for fast forward neutron models |
Darwin V. Ellis, Joseph M. Chiaramonte |
2019-09-24 |
| 8321131 |
Radial density information from a Betatron density sonde |
— |
2012-11-27 |
| 8063356 |
Method of extracting formation density and Pe using a pulsed accelerator based litho-density tool |
Tong Zhou, Felix Chen, Darwin V. Ellis, Bradley A. Roscoe |
2011-11-22 |
| 7148471 |
Well logging apparatus and method for measuring formation properties |
Bradley A. Roscoe |
2006-12-12 |
| 7112783 |
Neutron measurement method for determining porosity of a formation surrounding a borehole |
Darwin V. Ellis, Benoit Couet, Michael Evans, Francoise Allioli |
2006-09-26 |
| 5390115 |
Compensated gamma-gamma density sonde using three detectors |
Darwin V. Ellis |
1995-02-14 |
| 5334833 |
Sensitivity function technique for modeling nuclear tools |
Charles C. Watson, Richard D. Lawrence |
1994-08-02 |
