GB1282937A - Improvements in and relating to borehole logging techniqnes - Google Patents
Improvements in and relating to borehole logging techniqnesInfo
- Publication number
- GB1282937A GB1282937A GB3904269A GB3904269A GB1282937A GB 1282937 A GB1282937 A GB 1282937A GB 3904269 A GB3904269 A GB 3904269A GB 3904269 A GB3904269 A GB 3904269A GB 1282937 A GB1282937 A GB 1282937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- kev
- barium
- borehole
- soft
- hard
- 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
- 229910052788 barium Inorganic materials 0.000 abstract 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 5
- 230000005251 gamma ray Effects 0.000 abstract 3
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 230000005855 radiation Effects 0.000 abstract 2
- 229910052790 beryllium Inorganic materials 0.000 abstract 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000011835 investigation Methods 0.000 abstract 1
- 238000005204 segregation Methods 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
- G01V5/12—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 gamma or X-ray sources
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
1282937 Borehole investigation SCHLUMBERGER INLAND SERVICES Inc 5 Aug 1969 39042/69 Heading G1A In a gamma ray borehole investigating arrangement the detector output signals are segregated into at least a first group that corresponds to gamma ray energies in the vicinity of but extending downward from the K absorption limit for barium, and at least a second group that corresponds to a gamma ray energy range extending upwards from the barium K absorption limit, barium being an absorbing medium in the borehole mud. Additional segregation of hard and soft gamma rays is effected and the ratio of the two groups is used together, with the ratio of the hard and soft signals to determine the effects of the borehole barium. The source and detector housing is sprung into contact with the borehole wall and it includes a window of, for example, beryllium transparent to soft radiation, and having an effective atomic number of 11 or less. Ranges of 24 KeV to 33 KeV and 39 KeV to 51 KeV are given for the energies either side of the barium K limit and 39 KeV to 120 KeV and 240 KeV to 300 KeV are exemplified for soft and hard radiation. The determined figures are plotted by, for example, a galvanometer recorder to produce curves of formation chemical composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3904269A GB1282937A (en) | 1969-08-05 | 1969-08-05 | Improvements in and relating to borehole logging techniqnes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3904269A GB1282937A (en) | 1969-08-05 | 1969-08-05 | Improvements in and relating to borehole logging techniqnes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1282937A true GB1282937A (en) | 1972-07-26 |
Family
ID=10407274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3904269A Expired GB1282937A (en) | 1969-08-05 | 1969-08-05 | Improvements in and relating to borehole logging techniqnes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1282937A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579770A1 (en) * | 1985-04-02 | 1986-10-03 | Commissariat Energie Atomique | SPECTROMETRIC GAMMA DIAGRAM SYSTEM FOR DETERMINING THE GEOLOGICAL PARAMETERS OF A ROCK |
| EP2751388A4 (en) * | 2011-10-26 | 2015-04-29 | Halliburton Energy Services Inc | Methods and systems of formation density measurements in the presence of invasion of drilling fluids |
-
1969
- 1969-08-05 GB GB3904269A patent/GB1282937A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579770A1 (en) * | 1985-04-02 | 1986-10-03 | Commissariat Energie Atomique | SPECTROMETRIC GAMMA DIAGRAM SYSTEM FOR DETERMINING THE GEOLOGICAL PARAMETERS OF A ROCK |
| US4769541A (en) * | 1985-04-02 | 1988-09-06 | Commissariat A L'energie Atomique | Spectrometric gamma diagraphy system for the determination of the geological parameters of a rock |
| EP2751388A4 (en) * | 2011-10-26 | 2015-04-29 | Halliburton Energy Services Inc | Methods and systems of formation density measurements in the presence of invasion of drilling fluids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |