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Class Information
Number: 250/267
Name: Radiant energy > Geological testing or irradiation > Well testing apparatus and methods > With radiation control to detector
Description: Subject matter wherein the means to detect radiation emanating naturally or radiation modified or caused by the material interacting with the radiation includes a detector and includes radiation modifying means to control the radiation incident upon the detector and methods corresponding to the apparatus.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7285772 |
Logging tool with a parasitic radiation shield and method of logging with such a tool |
Oct. 23, 2007 |
| 7231077 |
Device and method for forming an image composed of a plurality of sub-areas |
Jun. 12, 2007 |
| 6999609 |
Device and method for forming an image composed of a plurality of sub-areas |
Feb. 14, 2006 |
| 6918293 |
System and method having radiation intensity measurements with standoff correction |
Jul. 19, 2005 |
| 6891194 |
Active matrix substrate, electromagnetic detector, and liquid crystal display apparatus |
May. 10, 2005 |
| 6100530 |
Angular time synchronized directional radiation sensor |
Aug. 8, 2000 |
| 5910654 |
Apparatus and method for measuring formation density in rugose boreholes |
Jun. 8, 1999 |
| 5321982 |
Method for measuring the rate of penetration of an equipment progressing in a well |
Jun. 21, 1994 |
| 5205167 |
Method and apparatus for locating stratification in production fluid in a well |
Apr. 27, 1993 |
| 5153431 |
Well logging radioactive detector assembly |
Oct. 6, 1992 |
| 5045693 |
Carbon/oxygen well logging method and apparatus |
Sep. 3, 1991 |
| 5021652 |
Directional gamma ray spectrometer |
Jun. 4, 1991 |
| 4972082 |
Methods and apparatus for epithermal neutron logging |
Nov. 20, 1990 |
| 4939362 |
Borehole fluid density well logging means and method |
Jul. 3, 1990 |
| 4937446 |
Carbon/oxygen well logging method and apparatus |
Jun. 26, 1990 |
| 4931638 |
Method of monitoring hidden coal-rock interface and transducer realizing this method |
Jun. 5, 1990 |
| 4874951 |
Solid-state track recorder dosimetry device to measure absolute reaction rates and neutron fluence as a function of time |
Oct. 17, 1989 |
| 4760252 |
Well logging tool with an accelerator neutron source |
Jul. 26, 1988 |
| 4661700 |
Well logging sonde with shielded collimated window |
Apr. 28, 1987 |
| 4638159 |
Graded shaped spatial resolution nuclear detectors |
Jan. 20, 1987 |
| 4629888 |
Well logging tool for hot well bores |
Dec. 16, 1986 |
| 4590370 |
Epithermal neutron die-away logging |
May. 20, 1986 |
| 4580049 |
Probe for locating mineral deposits |
Apr. 1, 1986 |
| 4556793 |
Epithermal neutron lifetime logging |
Dec. 3, 1985 |
| 4503327 |
Combination thermal and radiation shield |
Mar. 5, 1985 |
| 4228350 |
Method and apparatus for measuring underground fluid flow characteristics |
Oct. 14, 1980 |
| 4122341 |
Cementing method to improve well logging measurements in cased well boreholes |
Oct. 24, 1978 |
| 4002903 |
Simultaneous thermal neutron decay time and shale compensated chlorine log system |
Jan. 11, 1977 |
| 3973131 |
Pulsed neutron logging: multipurpose logging sonde for changing types of logs in the borehole without bringing the sonde to the surface |
Aug. 3, 1976 |
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