CN203867559U - Lithology density logger - Google Patents
Lithology density logger Download PDFInfo
- Publication number
- CN203867559U CN203867559U CN201420182811.3U CN201420182811U CN203867559U CN 203867559 U CN203867559 U CN 203867559U CN 201420182811 U CN201420182811 U CN 201420182811U CN 203867559 U CN203867559 U CN 203867559U
- Authority
- CN
- China
- Prior art keywords
- source
- litho
- density
- sniffer
- extrapolation
- 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 - Lifetime
Links
- 238000013213 extrapolation Methods 0.000 claims description 12
- 230000005251 gamma ray Effects 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000002285 radioactive effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model relates to a lithology density logger which comprises a logger body and an outwards-pushing detection device. The logger body is connected with an outer shell through an upper 57 connector and a lower 57 connector, wherein the 57 connectors are ECLIPS 5700 data interface connectors. An electronic circuit part sealed in a high-temperature-resistant and high-temperature-resistant circuit outer shell is arranged in the outer shell, the outwards-pushing detection device is driven by a motor to be pushed outwards or drawn back, and a long spaced detector, a short spaced detector, a photoelectric multiplier and a Cs 137 radioactive source chamber are arranged in the outwards-pushing detection device. The lithology density logger can be connected with an instrument with an ECLIPS 5700 interface in series, is high in universality, high in counting rate, good in detection statistics and small in obtained stratum density error.
Description
Technical field
The utility model relates to a kind of oil well logging instrument, is mainly used in the exploration and development of oil and natural gas, particularly a kind of litho-density tool based on ECLIPS5700 logging system.
Background technology
Litho-density log is bulk density and the photoelectric absorption index of measuring stratum, utilizes the gamma ray of downhole instrument internal source and the electronics of formation material atom to have an effect.The principal mode of gamma ray and stratum electron interaction is Compton effect and photoelectric effect, Compton effect has reflected the electron density of formation material, and electron density is the direct reflection of material density, photoelectric power has reflected the lithology of formation material.
Traditional litho-density tool makes instrument press close to borehole wall well logging with telescoping ram, and when well logging, down-hole situation complexity, is used traditional litho-density tool, and effect is not very desirable sometimes.
ECLIPS5700 logging system, due to powerful, technology maturation, is widely used in logging instrument field, and the traditional litho-density tool therewith instrument string of model interface is connected.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of New Generation Litho-Density Logging Tool is provided.
For achieving the above object, the utility model is realized by the following technical solutions:
A kind of litho-density tool, comprise instrument body and extrapolation sniffer composition, instrument body is made up of upper and lower two 57 joint connected with outer casings, electronic circuit part is set in shell, extrapolation sniffer is extrapolated by driven by motor or draws in, in extrapolation sniffer, two, He Duan source, long source probe, photoelectric multiplier and a source compartment is set.
57 described joints are ECLIPS5700 data-interface joint.
Described electronic circuit part is arranged in the circuit case of high temperature high voltage resistant of a sealing.
The Cs137 gamma ray source of constant intensity is set in described source compartment.
Described long source and short source detector probe are NaI crystal.
The course of work of the present utility model is as follows:
After a kind of litho-density tool is gone into the well, the Cs137 gamma ray source of constant intensity is launched gamma ray to formation material, and the flash of light difference that the gamma ray of different-energy excites while entering crystal enters the voltage pulse signal that causes different amplitudes after photomultiplier.Through voltage pulse signal circuit, the pulse of a series of different amplitudes is being shone upon, and cumulative on corresponding stored unit, in certain time interval, it is power spectrum that the step-by-step counting of all memory cell has just formed a curve, and this power spectrum is carried density and the lithological information of landing surface material.Utilize special spectrum stripping method and calibration data just can calculate formation material density and lithology.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts ECLIPS5700 data-interface joint, and the instrument string of model interface is connected therewith, highly versatile.Adopt extrapolation sniffer, be more suitable for down hole problem, and counting rate is high, the statistical of detection is good, gained density of earth formations error little.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of extrapolation sniffer.
In figure: 57 joints under the upper 57 joint 4-of 1-body 2-extrapolation sniffer 3-
The short source of NaI crystal counter 8-, the long source of 5-electronic circuit part 6-probe body 7-NaI crystal counter
9-photoelectric multiplier 10-source compartment 11-Cs137 gamma ray source
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further illustrated:
As shown in Figure 1, a kind of litho-density tool, comprise instrument body 1 and extrapolation sniffer 2 two parts compositions, instrument body is made up of upper 57 joints 3, lower 57 joint connected with outer casings, 57 joints are ECLIPS5700 data-interface joint, electronic circuit part 5 is set in shell, and electronic circuit part is arranged in the circuit case 6 of high temperature high voltage resistant of a sealing, and extrapolation sniffer 2 is extrapolated by driven by motor or draws in.
As shown in Figure 2, the interior source compartment 10 that long source NaI crystal counter 7 and short source NaI crystal counter 8 photoelectric multipliers 9 and are set arrange the Cs137 gamma ray source 11 of constant intensity of extrapolation sniffer 2 probe bodys 6.
Above, be only general principle of the present utility model, not the utility model imposed any restrictions, everyly according to the utility model, it is carried out to equivalent variations and modification, all within the category of the art of this patent protection scheme.
Claims (5)
1. a litho-density tool, it is characterized in that, comprise instrument body and extrapolation sniffer composition, instrument body is made up of upper and lower two 57 joint connected with outer casings, electronic circuit part is set in shell, extrapolation sniffer is extrapolated by driven by motor or draws in, in extrapolation sniffer, two, He Duan source, long source probe, photoelectric multiplier and a source compartment is set.
2. a kind of litho-density tool according to claim 1, is characterized in that, 57 described joints are ECLIPS5700 data-interface joint.
3. a kind of litho-density tool according to claim 1, is characterized in that, described electronic circuit part is arranged in the circuit case of high temperature high voltage resistant of a sealing.
4. a kind of litho-density tool according to claim 1, is characterized in that,, the Cs137 gamma ray source of constant intensity is set in described source compartment.
5. a kind of litho-density tool according to claim 1, is characterized in that, described long source and short source detector probe are NaI crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182811.3U CN203867559U (en) | 2014-04-16 | 2014-04-16 | Lithology density logger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182811.3U CN203867559U (en) | 2014-04-16 | 2014-04-16 | Lithology density logger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867559U true CN203867559U (en) | 2014-10-08 |
Family
ID=51648529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420182811.3U Expired - Lifetime CN203867559U (en) | 2014-04-16 | 2014-04-16 | Lithology density logger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867559U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321084A (en) * | 2015-07-02 | 2017-01-11 | 中石化石油工程技术服务有限公司 | Lithologic density microspherically focused logging tool combined probe |
| CN107387060A (en) * | 2017-09-11 | 2017-11-24 | 中国矿业大学 | Method for guiding fully-mechanized coal mining machine to mine coal from top |
| CN108222927A (en) * | 2018-01-15 | 2018-06-29 | 中国石油大学(华东) | A kind of density log method based on x-ray source |
| CN111119871A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Measuring device for measuring formation density value and measuring method thereof |
-
2014
- 2014-04-16 CN CN201420182811.3U patent/CN203867559U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321084A (en) * | 2015-07-02 | 2017-01-11 | 中石化石油工程技术服务有限公司 | Lithologic density microspherically focused logging tool combined probe |
| CN107387060A (en) * | 2017-09-11 | 2017-11-24 | 中国矿业大学 | Method for guiding fully-mechanized coal mining machine to mine coal from top |
| CN108222927A (en) * | 2018-01-15 | 2018-06-29 | 中国石油大学(华东) | A kind of density log method based on x-ray source |
| CN111119871A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Measuring device for measuring formation density value and measuring method thereof |
| CN111119871B (en) * | 2018-10-31 | 2023-12-26 | 中国石油化工集团有限公司 | Measuring device and measuring method for measuring stratum density value |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |
|
| CX01 | Expiry of patent term |