WO2009023437A4 - Ruggedized neutron shields - Google Patents
Ruggedized neutron shields Download PDFInfo
- Publication number
- WO2009023437A4 WO2009023437A4 PCT/US2008/071552 US2008071552W WO2009023437A4 WO 2009023437 A4 WO2009023437 A4 WO 2009023437A4 US 2008071552 W US2008071552 W US 2008071552W WO 2009023437 A4 WO2009023437 A4 WO 2009023437A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shield
- tool
- fiber
- disposed
- neutron absorbing
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
- G01V5/04—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
Abstract
A shield for a well logging instrument includes an outer layer including a reinforcing fiber disposed in a matrix and an inner layer including a thermal neutron absorbing material disposed in a matrix. The thermal neutron absorbing material is selected to emit capture gamma rays having energy outside a selected energy range.
Claims
AMENDED CLAIMS [received by the International Bureau on 22 June 2009 (22.06.09)]
What is claimed is:
[clj A shield for a Well logging instrument, comprising: an outer layer including a reinforcing fiber disposed in a matrix; and an inner layer including a thermal neutron absorbing material disposed in a matrix, the thermal neutron absorbing material selected to emit capture gamma rays having energy outside an energy range of gamma rays of interest resulting from neutron interaction with the formations.
[c2] The shield of claim 1 wherein the thermal neutron absorbing material comprises boron- 10.
[c3] The shield of claim 1 wherein the outer layer matrix comprises at least one of nitrile rubber, polyetherketone, polyetheretherketone and polyetherketoneketone.
[c4J The shield of claim 1 wherein the reinforcing fiber comprises at least one of glass fiber and carbon fiber.
[c5] The shield of claim 1 wherein the thermal neutron absorbing material comprises neutron absorbing particles deposited on a fiber, the deposited fiber disposed in a matrix,
[c6] The shield of claim 5 wherein the deposited fiber comprises at least one of glass fiber and carbon fiber.
[c7J The shield of claim 1 further comprising a structural layer disposed between the inner layer and the outer layer.
[c8] The shield of claim 7 wherein the structural layer comprises polyetheretherketone,
[c9] The shield of claim 1 wherein the inner layer and the outer layer are configured as annular cylinders.
(clO) The shield of claim 9 wherein the annular cylinders are disposed on an exterior surface of a tool mandrel, the tool mandrel having a radiation detector therein. [ell] A well logging tool, comprising: a tool mandrel configured to be moved along an interior of a wellbore drilled through subsurface formations; at least one radiation detector disposed in an interior chamber defined by the tool mandrel; and a radiation shield disposed on an exterior surface of the tool mandrel proximate a position therein of the radiation detector, the shield including an outer layer including a reinforcing fiber disposed in a matrix and an inner layer including a thermal neutron absorbing material disposed in a matrix, the thermal neutron absorbing material selected to emit capture gamma rays having energy outside an energy range of gamma rays of interest resulting from neutron interaction with the formations,,
[cl2] The tool of claim 11 wherein the thermal neutron absorbing material comprises boron- 10.
[cl3] The tool of claim 11 wherein the outer layer matrix comprises at least one of nitrile rubber, polyetherketone, polyetheretherketone and polyetherketoneketone.
[cl4] The tool of claim 11 wherein the reinforcing fiber comprises at least one of glass fiber and carbon fiber,
IcIS] The tool of claim 11 wherein the thermal neutron absorbing material comprises neutron absorbing particles deposited on a fiber, the deposited fiber disposed in a matrix.
[cl6] The tool of claim 15 wherein the deposited fiber comprises at least one of glass fiber and carbon fiber.
jcl7] The tool of claim 11 further comprising a structural layer disposed between the inner layer and the outer layer.
[clS) The tool of claim 17 wherein the structural layer comprises polyetheretherketone.
[cl9] The tool of claim 11 wherein the inner layer and the outer layer are configured as annular cylinders.
15
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0814872-4A BRPI0814872A2 (en) | 2007-08-10 | 2008-07-30 | Shielding for a well profiling instrument, and well profiling tool |
| US12/672,445 US8895914B2 (en) | 2007-08-10 | 2008-07-30 | Ruggedized neutron shields |
| RU2010108533/28A RU2473100C2 (en) | 2007-08-10 | 2008-07-30 | High-strength neutron shield |
| MX2010001461A MX2010001461A (en) | 2007-08-10 | 2008-07-30 | Ruggedized neutron shields. |
| EP08827551A EP2176687A2 (en) | 2007-08-10 | 2008-07-30 | Ruggedized neutron shields |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US95507707P | 2007-08-10 | 2007-08-10 | |
| US60/955,077 | 2007-08-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2009023437A2 WO2009023437A2 (en) | 2009-02-19 |
| WO2009023437A3 WO2009023437A3 (en) | 2009-07-09 |
| WO2009023437A4 true WO2009023437A4 (en) | 2009-08-27 |
Family
ID=40351406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2008/071552 WO2009023437A2 (en) | 2007-08-10 | 2008-07-30 | Ruggedized neutron shields |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8895914B2 (en) |
| EP (1) | EP2176687A2 (en) |
| BR (1) | BRPI0814872A2 (en) |
| MX (1) | MX2010001461A (en) |
| RU (1) | RU2473100C2 (en) |
| WO (1) | WO2009023437A2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2391799A2 (en) | 2009-01-30 | 2011-12-07 | Schlumberger Technology B.V. | System and method for matching lithology responses of downhole tools having different source energies |
| WO2010118119A2 (en) | 2009-04-07 | 2010-10-14 | Baker Hughes Incorporated | Gamma ray generator |
| WO2010118120A2 (en) * | 2009-04-07 | 2010-10-14 | Baker Hughes Incorporated | Method for taking gamma-gamma density measurements |
| WO2011146734A2 (en) * | 2010-05-19 | 2011-11-24 | Schlumberger Canada Limited | Pulse neutron formation gas identification with lwd measurements |
| US9304214B2 (en) | 2010-06-30 | 2016-04-05 | Schlumberger Technology Corporation | Neutron detection using a shielded gamma detector |
| US20130161564A1 (en) * | 2011-12-22 | 2013-06-27 | International Scientific Technologies, Inc. | NanoStructured Additives to High-Performance Polymers for Use in Radiation Shielding, Protection Against Atomic Oxygen and in Structural Applications |
| US8946663B2 (en) * | 2012-05-15 | 2015-02-03 | Spansion Llc | Soft error resistant circuitry |
| US20140312906A1 (en) * | 2013-04-23 | 2014-10-23 | Baker Hughes Incorporated | Fractal shaped antenna for downhole logging |
| US9417355B2 (en) | 2013-12-31 | 2016-08-16 | Schlumberger Technology Corporation | Composition-matched inelastic or capture spectroscopy tool |
| US10537350B2 (en) * | 2017-03-28 | 2020-01-21 | Biosense Webster (Israel) Ltd. | Medical device having a reusable position sensor |
| US11456147B2 (en) * | 2017-06-23 | 2022-09-27 | Chrysos Corporation Limited | Shielded X-ray radiation apparatus |
| US10948624B1 (en) * | 2019-11-25 | 2021-03-16 | Halliburton Energy Services, Inc. | LWD mineralogy/spectroscopy thermal neutron shielding |
| CN113279743B (en) * | 2021-05-25 | 2022-05-31 | 电子科技大学 | Downhole auxiliary measuring device based on flexible composite material |
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-
2008
- 2008-07-30 WO PCT/US2008/071552 patent/WO2009023437A2/en active Application Filing
- 2008-07-30 EP EP08827551A patent/EP2176687A2/en not_active Withdrawn
- 2008-07-30 RU RU2010108533/28A patent/RU2473100C2/en not_active IP Right Cessation
- 2008-07-30 BR BRPI0814872-4A patent/BRPI0814872A2/en not_active IP Right Cessation
- 2008-07-30 US US12/672,445 patent/US8895914B2/en active Active
- 2008-07-30 MX MX2010001461A patent/MX2010001461A/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| MX2010001461A (en) | 2010-03-15 |
| BRPI0814872A2 (en) | 2015-08-11 |
| RU2010108533A (en) | 2011-09-20 |
| RU2473100C2 (en) | 2013-01-20 |
| EP2176687A2 (en) | 2010-04-21 |
| US20110303836A1 (en) | 2011-12-15 |
| WO2009023437A3 (en) | 2009-07-09 |
| WO2009023437A2 (en) | 2009-02-19 |
| US8895914B2 (en) | 2014-11-25 |
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