GB2083213B - Method and apparatus for simultaneous measurement of borehole and formation neutron decay-times - Google Patents
Method and apparatus for simultaneous measurement of borehole and formation neutron decay-timesInfo
- Publication number
- GB2083213B GB2083213B GB8124933A GB8124933A GB2083213B GB 2083213 B GB2083213 B GB 2083213B GB 8124933 A GB8124933 A GB 8124933A GB 8124933 A GB8124933 A GB 8124933A GB 2083213 B GB2083213 B GB 2083213B
- Authority
- GB
- United Kingdom
- Prior art keywords
- borehole
- simultaneous measurement
- neutron decay
- formation neutron
- formation
- 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
Classifications
-
- 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
- G01V5/08—Prospecting or detecting by the use of nuclear 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 nuclear 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 nuclear 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 nuclear 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/221—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis
- G01N23/222—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/07—Investigating materials by wave or particle radiation secondary emission
- G01N2223/074—Investigating materials by wave or particle radiation secondary emission activation analysis
- G01N2223/0745—Investigating materials by wave or particle radiation secondary emission activation analysis neutron-gamma activation analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/616—Specific applications or type of materials earth materials
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18217280A | 1980-08-28 | 1980-08-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2083213A GB2083213A (en) | 1982-03-17 |
GB2083213B true GB2083213B (en) | 1984-04-11 |
Family
ID=22667336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8124933A Expired GB2083213B (en) | 1980-08-28 | 1981-08-14 | Method and apparatus for simultaneous measurement of borehole and formation neutron decay-times |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA1165017A (en) |
FR (1) | FR2489532A1 (en) |
GB (1) | GB2083213B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4507554A (en) * | 1983-02-07 | 1985-03-26 | Schlumberger Technology Corporation | Method and apparatus for determining borehole and formation constituents |
US4712007A (en) * | 1985-04-01 | 1987-12-08 | S.I.E., Inc. | Pulsed neutron logging method using cumulative count curves |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3133195A (en) * | 1958-12-05 | 1964-05-12 | California Research Corp | Neutron slowing down and absorption logging method |
US3705304A (en) * | 1967-05-31 | 1972-12-05 | Dresser Ind | Pulsed neutron well logging apparatus having means to vary the neutron generator pulse repetition rate |
US4152590A (en) * | 1977-05-19 | 1979-05-01 | Texaco Inc. | Simultaneous thermal neutron decay time and porosity logging system |
IE49620B1 (en) * | 1978-10-26 | 1985-11-13 | Schlumberger Ltd | Method and apparatus for measuring thermal neutron characteristics |
-
1981
- 1981-07-21 CA CA000382141A patent/CA1165017A/en not_active Expired
- 1981-08-14 GB GB8124933A patent/GB2083213B/en not_active Expired
- 1981-08-28 FR FR8116481A patent/FR2489532A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2489532B1 (en) | 1984-12-21 |
CA1165017A (en) | 1984-04-03 |
GB2083213A (en) | 1982-03-17 |
FR2489532A1 (en) | 1982-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930814 |