GB1131406A - Epithermal neutron well logging - Google Patents
Epithermal neutron well loggingInfo
- Publication number
- GB1131406A GB1131406A GB1783666A GB1783666A GB1131406A GB 1131406 A GB1131406 A GB 1131406A GB 1783666 A GB1783666 A GB 1783666A GB 1783666 A GB1783666 A GB 1783666A GB 1131406 A GB1131406 A GB 1131406A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- neutron
- detector
- epithermal
- thermal neutron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 abstract 3
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 abstract 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 abstract 2
- 239000004033 plastic Substances 0.000 abstract 2
- 229920003023 plastic Polymers 0.000 abstract 2
- 230000005855 radiation Effects 0.000 abstract 2
- 229910015900 BF3 Inorganic materials 0.000 abstract 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- 229910052692 Dysprosium Inorganic materials 0.000 abstract 1
- 229910052693 Europium Inorganic materials 0.000 abstract 1
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 239000011358 absorbing material Substances 0.000 abstract 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 abstract 1
- -1 europium activated lithium iodide Chemical class 0.000 abstract 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229910052744 lithium Inorganic materials 0.000 abstract 1
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Inorganic materials [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 239000012188 paraffin wax Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/04—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
- G01V5/08—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays
- G01V5/10—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
- G01V5/107—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources and detecting reflected or back-scattered neutrons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
1,131,406. Neutron well logging. TEXACO DEVELOPMENT CORP. April 22, 1966, No. 17836/66. Heading G1A. [Also in Division G6] An epithermal neutron detector comprises a thermal neutron detector surrounded by a front layer of neutron thermalizing material which is enclosed within a second layer of thermal neutron absorbing material. The thermal neutron detector may be either a proportional counter or a photomultiplier tube associated with a scintillator material. In a bore-hole logging arrangement the epithermal detector is associated with a fast neutron source from which it is isolated by radiation shielding. In operation, the epithermal neutrons pass through the second layer of thermal neutron absorber, as thermalized in the first layer and pass through into the detector. The second layer may be gadolinium or dysprosium and the first layer, paraffin wax, plastics, oil or water. The proportional counter contains boron trifluoride and the scintillator material, europium activated lithium iodide, lithium fluoride or bromide, or lithium activated plastics or liquid. Separation of radiation signals is effected by a discriminator circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1783666A GB1131406A (en) | 1966-04-22 | 1966-04-22 | Epithermal neutron well logging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1783666A GB1131406A (en) | 1966-04-22 | 1966-04-22 | Epithermal neutron well logging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1131406A true GB1131406A (en) | 1968-10-23 |
Family
ID=10102072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1783666A Expired GB1131406A (en) | 1966-04-22 | 1966-04-22 | Epithermal neutron well logging |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1131406A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009023437A2 (en) * | 2007-08-10 | 2009-02-19 | Schlumberger Canada Limited | Ruggedized neutron shields |
| WO2013122652A2 (en) * | 2011-12-29 | 2013-08-22 | Raytheon Company | Methods and apparatus for integrated neutron/gamma detector |
| CN112384828A (en) * | 2018-07-20 | 2021-02-19 | 贝克休斯油田作业有限责任公司 | Pseudo-gas type neutron detector |
-
1966
- 1966-04-22 GB GB1783666A patent/GB1131406A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009023437A2 (en) * | 2007-08-10 | 2009-02-19 | Schlumberger Canada Limited | Ruggedized neutron shields |
| WO2009023437A3 (en) * | 2007-08-10 | 2009-07-09 | Schlumberger Ca Ltd | Ruggedized neutron shields |
| US8895914B2 (en) | 2007-08-10 | 2014-11-25 | Schlumberger Technology Corporation | Ruggedized neutron shields |
| WO2013122652A2 (en) * | 2011-12-29 | 2013-08-22 | Raytheon Company | Methods and apparatus for integrated neutron/gamma detector |
| WO2013122652A3 (en) * | 2011-12-29 | 2014-01-09 | Raytheon Company | Methods and apparatus for integrated neutron/gamma detector |
| US8716670B2 (en) | 2011-12-29 | 2014-05-06 | Raytheon Company | Methods and apparatus for integrated neutron/gamma detector |
| CN112384828A (en) * | 2018-07-20 | 2021-02-19 | 贝克休斯油田作业有限责任公司 | Pseudo-gas type neutron detector |
| CN112384828B (en) * | 2018-07-20 | 2023-10-27 | 贝克休斯油田作业有限责任公司 | Pseudo-gas neutron detector |
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