Issued Patents All Time
Showing 76–88 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4450354 | Gain stabilized natural gamma ray detection of casing thickness in a borehole | Carl A. Robbins | 1984-05-22 |
| 4439676 | Natural gamma ray logging with borehole effect compensation | Dan M. Arnold | 1984-03-27 |
| 4436996 | Borehole compensated KUT log | Dan M. Arnold, Ward E. Schultz | 1984-03-13 |
| 4424444 | Method for simultaneous measurement of borehole and formation neutron lifetimes | Dan M. Arnold | 1984-01-03 |
| 4409481 | Method for simultaneous measurement of thermal neutron decay components | Ward E. Schultz, Jerry L. Verbout | 1983-10-11 |
| 4381449 | Neutron-inelastic gamma radiation well logging method and apparatus with background radiation accounted for | — | 1983-04-26 |
| 4380701 | Nuclear well logging with neutron source and separate spaced radiation detectors to determine silicon/oxygen ratio | Ward E. Schultz | 1983-04-19 |
| 4375164 | Formation tester | Carl Dodge | 1983-03-01 |
| 4370886 | In situ measurement of gas content in formation fluid | Carl Dodge | 1983-02-01 |
| 4328483 | Multiplexed-demultiplexed synchro demodulation apparatus | Harold L. Swartz, Terrence L. Grimes | 1982-05-04 |
| 4297575 | Simultaneous gamma ray measurement of formation bulk density and casing thickness | Dan M. Arnold, Kenneth J. Smith | 1981-10-27 |
| 4200789 | Measuring oil and water cuts in a multiphase flowstream with elimination of the effects of gas in determining the liquid cuts | Dan M. Arnold | 1980-04-29 |
| 4190768 | Determining the water cut and water salinity in an oil-water flow stream by measuring the sulfur content of the produced oil | Dan M. Arnold | 1980-02-26 |