EP0387055A3 - Gamma ray well logging for radial tracer distances - Google Patents
Gamma ray well logging for radial tracer distances Download PDFInfo
- Publication number
- EP0387055A3 EP0387055A3 EP19900302472 EP90302472A EP0387055A3 EP 0387055 A3 EP0387055 A3 EP 0387055A3 EP 19900302472 EP19900302472 EP 19900302472 EP 90302472 A EP90302472 A EP 90302472A EP 0387055 A3 EP0387055 A3 EP 0387055A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- tracer
- gamma ray
- spectrum
- relative distance
- borehole
- 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.)
- Withdrawn
Links
- 239000000700 radioactive tracer Substances 0.000 title abstract 5
- 230000005251 gamma ray Effects 0.000 title abstract 4
- 238000001228 spectrum Methods 0.000 abstract 6
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000000084 gamma-ray spectrum Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/11—Locating fluid leaks, intrusions or movements using tracers; using radioactivity
- E21B47/111—Locating fluid leaks, intrusions or movements using tracers; using radioactivity using radioactivity
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/11—Locating fluid leaks, intrusions or movements using tracers; using radioactivity
Abstract
Gamma ray well logging to obtain relative distance
indications of tracers from the well bore comprises
separating a measured gamma ray spectrum into component
parts attributable to individual tracers, using standard
spectra, and then obtaining the relative distance indicators
from those parts of the spectrum. For cased borehole, using
standard spectra as a guide, the proportions of the borehole
component and the formation component can be determined and
a composite spectrum obtained for each individual tracer by
adding the borehole and formation components together. A
Compton ratio Rc of gamma ray counts in an energy region of
the spectrum which is sensitive to Compton scattering to
gamma ray counts in an energy region of the spectrum which
is not sensitive to Compton scattering is then obtained. By
a linear transformation which parameterizes the Compton
ratio Rc with the inverse square of the annulus diameter of
a distributed region of tracer surrounding the well bore, a
relative distance indication of the distribution of each
tracer with respect to the well bore is obtainable for each
tracer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US321307 | 1981-11-13 | ||
| US32130789A | 1989-03-10 | 1989-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0387055A2 EP0387055A2 (en) | 1990-09-12 |
| EP0387055A3 true EP0387055A3 (en) | 1992-06-10 |
Family
ID=23250064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19900302472 Withdrawn EP0387055A3 (en) | 1989-03-10 | 1990-03-08 | Gamma ray well logging for radial tracer distances |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0387055A3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2644452A1 (en) * | 2006-03-29 | 2007-10-04 | Christopher Leslie Waring | Measurement of hydraulic conductivity using a radioactive or activatable tracer |
| US7482578B2 (en) | 2006-06-12 | 2009-01-27 | Lonkar Services, Ltd. | Gamma radiation spectral logging system and method for processing gamma radiation spectra |
| US8044342B2 (en) | 2009-03-04 | 2011-10-25 | Halliburton Energy Services, Inc. | Method and system for calculating extent of a formation treatment material in a formation |
| US20130299687A1 (en) * | 2010-11-19 | 2013-11-14 | Schlumberger Technology Corporation | Neutron Wellbore Imaging Tool |
| CN112649888B (en) * | 2020-11-24 | 2022-08-12 | 东华理工大学 | Uranium ore quantitative scale coefficient solving method based on energy spectrum logging characteristic spectrum peak |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2024409A (en) * | 1978-06-29 | 1980-01-09 | Texaco Development Corp | Water injection profiling by nuclear logging |
| EP0348098A2 (en) * | 1988-06-24 | 1989-12-27 | Halliburton Company | Gamma ray well logging |
-
1990
- 1990-03-08 EP EP19900302472 patent/EP0387055A3/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2024409A (en) * | 1978-06-29 | 1980-01-09 | Texaco Development Corp | Water injection profiling by nuclear logging |
| EP0348098A2 (en) * | 1988-06-24 | 1989-12-27 | Halliburton Company | Gamma ray well logging |
Non-Patent Citations (1)
| Title |
|---|
| TEH LOG ANALYST 1 May 1988, pages 159 - 177; GADEKEN: 'CALIBRATION AND ANALYSIS OF BOREHOLE AND FORMATION SENSITIVITIES FOR GAMMA RAY SPECTROSCOPY MEASUREMENTS WITH MULTIPLE RADIOACTIVE TRACERS' * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0387055A2 (en) | 1990-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT NL |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB IT NL |
|
| 17P | Request for examination filed |
Effective date: 19920930 |
|
| 17Q | First examination report despatched |
Effective date: 19930823 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19940104 |