GB1163535A - Radiation decay analyser - Google Patents
Radiation decay analyserInfo
- Publication number
- GB1163535A GB1163535A GB53451/65A GB5345165A GB1163535A GB 1163535 A GB1163535 A GB 1163535A GB 53451/65 A GB53451/65 A GB 53451/65A GB 5345165 A GB5345165 A GB 5345165A GB 1163535 A GB1163535 A GB 1163535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- gates
- pulse
- position modulated
- integrators
- 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
- 230000005855 radiation Effects 0.000 title abstract 4
- 230000015572 biosynthetic process Effects 0.000 abstract 3
- 238000005755 formation reaction Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000002285 radioactive effect Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/30—Measuring half-life of a radioactive substance
-
- 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
- G01V5/101—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 the secondary Y-rays produced in the surrounding layers of the bore hole
- G01V5/102—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 the secondary Y-rays produced in the surrounding layers of the bore hole the neutron source being of the pulsed type
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Radiation (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
1,163,535. Radio-active borehole logging. BRITISH PETROLEUM CO. Ltd. Dec. 15, 1966 [Dec.16, 1965], No.53451/65. Heading G1A. A borehole is logged by transmitting pulses of radiation into the formations surrounding a logging sonde, measuring the intensity of induced gamma activity at a number of instants at varying times after the exciting pulse and transmitting the measurements to the surface as pulse position modulated time multiplexed signals. A scintillation detector D is synchronized with a pulsed neutron source NS to detect induced radiation from the formations in the intervals when the source is not emitting. AND gates E1-E23 are opened in sequence so that the output of detector D passes into 23 channels corresponding to different times after the exciting pulse. The pulses are standardized by monostable circuits M1-M23 and integrated by integrators I1-I23 to produce signals representative of the number of pulses received in each channel. The outputs of integrators I1-I23 are fed in turn through sequentially operated AND gates A1-A23 to a multiplex transmitter TT. In TT the analogue signals from the integrators are converted into pulse position modulated signals and transmitted up the logging cable to a multiplex receiver TR which distributes the position modulated pulses through 23 AND gates B1-B23, to stores ST1-ST23. The contents of the stores may be displayed on a C.R.T. in the form of the decay curve of induced radiation in the formations, and the contents of selected combinations of stores may be displayed on indicators IND1-IND5 by suitable closure of switches SS1-SS115. The ratio of selected channels may be displayed on a ratio meter RM. The synchronizing pulses for the neutron source NS and detector D and the various gates are provided by a multi cathode discharge tube as described in Specification 1,095,630. The pulses passing a selected one of gates E1-E23 into a corresponding channel may be applied to a pulse height analyzer and the results of the analysis transmitted up the logging cable as pulse position modulated time division multiplexed signals as described in Specification 1,095,630.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB53451/65A GB1163535A (en) | 1965-12-16 | 1965-12-16 | Radiation decay analyser |
| FR87393A FR1506682A (en) | 1965-12-16 | 1966-12-14 | Method and apparatus for probing boreholes |
| DE19661548153 DE1548153A1 (en) | 1965-12-16 | 1966-12-15 | Method for multi-channel transmission of the temporal decrease in gamma radiation excited by artificial radiation |
| CH1804766A CH469992A (en) | 1965-12-16 | 1966-12-16 | Method of analyzing the decrease in radiation in a borehole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB53451/65A GB1163535A (en) | 1965-12-16 | 1965-12-16 | Radiation decay analyser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1163535A true GB1163535A (en) | 1969-09-10 |
Family
ID=10467854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB53451/65A Expired GB1163535A (en) | 1965-12-16 | 1965-12-16 | Radiation decay analyser |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH469992A (en) |
| DE (1) | DE1548153A1 (en) |
| FR (1) | FR1506682A (en) |
| GB (1) | GB1163535A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10297101B2 (en) | 2008-05-02 | 2019-05-21 | Aristocrat Technologies Australia Pty Limited | Gaming system and a method of monitoring a gaming device |
-
1965
- 1965-12-16 GB GB53451/65A patent/GB1163535A/en not_active Expired
-
1966
- 1966-12-14 FR FR87393A patent/FR1506682A/en not_active Expired
- 1966-12-15 DE DE19661548153 patent/DE1548153A1/en active Pending
- 1966-12-16 CH CH1804766A patent/CH469992A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10297101B2 (en) | 2008-05-02 | 2019-05-21 | Aristocrat Technologies Australia Pty Limited | Gaming system and a method of monitoring a gaming device |
| US11145157B2 (en) | 2008-05-02 | 2021-10-12 | Aristocrat Technologies Australia Pty Limited | Gaming machine and method for transferring game meter data to a portable device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1548153A1 (en) | 1970-03-05 |
| FR1506682A (en) | 1967-12-22 |
| CH469992A (en) | 1969-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed |