CN201972699U - Multi-detector while drilling neutron logging device - Google Patents
Multi-detector while drilling neutron logging device Download PDFInfo
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- CN201972699U CN201972699U CN2011200733555U CN201120073355U CN201972699U CN 201972699 U CN201972699 U CN 201972699U CN 2011200733555 U CN2011200733555 U CN 2011200733555U CN 201120073355 U CN201120073355 U CN 201120073355U CN 201972699 U CN201972699 U CN 201972699U
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Abstract
The utility model provides a multi-detector while drilling neutron logging device, including a drill collar and a neutron logging. The neutron logging is set in the drill collar. A mud channel is set in the neutron logging. The neutron logging includes a neutron source which is connected with one end of the drill collar; a neutron detector which includes near detector and far detector. The near detector and the far detector are set in the drill collar in parallel and on one side of the neutron source. The near detector is near the neutron source. A neutron shield body includes a coating which is set on the near and the far detectors corresponding to the out shell of the mud channel. A processing circuitry is set in the drill collar and located in the side of neutron source which is far from the far detector. The processing circuitry connects with the near and the far detectors. The neutron logging device is set in the drill collar, thus can realize the measure while drilling. The utility model has high real-time and can reduce the time of invasion of the well layer and the logging operation.
Description
Technical field
The utility model relates to a kind of with boring multi-detector neutron well logging device.
Background technology
Neutron well logging is to measure the response of stratum to thermal neutron/epithermal neutron in drilling process, by the logging method that neutron count rate calculates formation porosity, can carry out gas-bearing formation identification in conjunction with other measuring methods such as density of earth formations, differentiates oil-gas Layer position and reserves.At present, cable neutron well logging is adopted in neutron well logging usually, and this cable neutron well logging has real-time poor, need log well separately, has increased the intrusion time and the logging operation time of wellbore formation.
The utility model content
The technical problems to be solved in the utility model provide a kind of can with bore with the real-time of surveying high and reduce that wellbore formation is invaded and the logging operation time with boring multi-detector neutron well logging device.
In order to address the above problem, it is a kind of with boring multi-detector neutron well logging device that the utility model provides, and comprising:
Drill collar;
Neutron logging instrument, described neutron logging instrument are set in the described drill collar, and inside is provided with the slurry channel of perforation, and described neutron logging instrument comprises:
Neutron source, described neutron source connection is arranged on described drill collar one end;
Neutron detector, described neutron detector comprises nearly probe and far detector, and described nearly probe and far detector parallel sleeve are located in the described drill collar and are positioned at described neutron source one side, and described nearly probe is near described neutron source;
Neutron shield body, described neutron shield body comprise the coating that is arranged on described slurry channel shell corresponding described far detector of difference and the nearly detector position;
Treatment circuit, described treatment circuit is set in the described drill collar, and is positioned at the side of described far detector away from described neutron source, and described treatment circuit communication connects described nearly probe and far detector.
Further, described treatment circuit comprises:
Preceding amplification module, described preceding amplification module communication respectively connect described neutron detector and main putting and Shaping Module;
High-pressure modular, described high-pressure modular connects described main control module and neutron detector respectively;
Main putting and Shaping Module, described master is put and the communication of Shaping Module difference connects described preceding amplification module and main control module;
Main control module, described main control module connects described high-pressure modular, and communication connects that described master is put and Shaping Module and bus respectively.
Further, described neutron shield body also comprises and is set in the described drill collar and the ring shielding body between described nearly probe and neutron source.
Further, described nearly probe and far detector quantity are more than two.
The utlity model has following advantage:
1, the utility model is set in neutron logging instrument in the drill collar, can realize that with boring with survey, real-time is high and reduce wellbore formation intrusion and logging operation time.
2, treatment circuit can carry out the data processing to the probe feedback information in the utility model, and this processing is simple and reliable, improves logging accuracy greatly.
3, the utility model adopts a plurality of nearly probes and far detector, the counting of a plurality of probes can be obtained during well logging,, final formation porosity can be obtained by analysis-by-synthesis calculating by calculating many formation porosity curves, improve certainty of measurement, reduced ambient influnence.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
It is a kind of with boring multi-detector neutron well logging apparatus structure schematic diagram that Fig. 1 shows the utility model;
Fig. 2 shows A among Fig. 1 to analysing and observe enlarged diagram;
It is a kind of with boring treatment circuit operating principle schematic diagram in the multi-detector neutron well logging device that Fig. 3 shows the utility model.
The specific embodiment
As shown in Figure 1, the utility model comprises drill collar 1 and neutron logging instrument 2.Wherein, drill collar 1 is used for piercing well, is power-equipment; Neutron logging instrument 2 is a measureing equipment, is fitted in the drill collar 1, enters in the well, and down-hole formation is tested.Neutron logging instrument 2 is inserted in the middle of hollow cylindrical drill collar 1 and the slurry channel 3, and slurry channel 3 is in the inside, and drill collar 1 is at outermost.
The source of neutron for taking place in neutron source 21, and neutron source 21 connections are arranged on drill collar 1 one ends, to the down-hole formation given-ioff neutron.Neutron source 21 can adopt 241Am-9Be neutron source or 252Cf source.
Nearly probe 221 can adopt identical He-3 probe with far detector 222, and the size of He-3 probe can adopt Φ 19mm * 150mm, Φ 25mm * 150mm, and Φ 38mm * 150mm, Φ 50mm * 150mm, probe internal gas pressure are 4ATM-10ATM.The concrete selection of the size of He-3 probe determined according to the diameter of slurry channel 3 and the diameter of drill collar 1.Nearly probe 221 can adopt 28-32cm, and far detector 222 can adopt 58-62cm.
As Fig. 1 and shown in Figure 2, neutron shield body 23 comprises two parts, is respectively to be arranged on respectively corresponding far detector 222 of slurry channel 3 shells and nearly probe 221 locational coatings 231.This coating 231 can shield the influence of 21 pairs of nearly probes 221 of neutron source and far detector 222, and the result who makes nearly probe 221 and far detector 222 survey is better.
The utility model is set in neutron logging instrument 2 in the drill collar 1, can realize that with boring with survey, real-time is high and reduce wellbore formation intrusion and logging operation time.
As shown in Figure 3, in the utility model, treatment circuit 24 comprises: preceding amplification module 241, high-pressure modular 242, main putting and Shaping Module 243 and main control module 244.Preceding amplification module 241 is used for amplifying, and high-pressure modular 242 is used to provide high voltage source, and the master is put and Shaping Module 243 is used for amplifying and shaping, and main control module 244 is used for deal with data and exports result.Wherein:
Preceding amplification module 241 communication respectively connects neutron detector 22 and main putting and Shaping Module 243.Preceding amplification module 241 receives the signal that neutron detectors 22 send, and carries out sending to main putting and Shaping Module 243 after the preposition amplification.
High-pressure modular 242 connects main control module 244 and neutron detector 22 respectively.This high-pressure modular 242 can provide high voltage source to main control module 244 and neutron detector 22.
Main putting and preceding amplification module 241 of Shaping Module 243 difference communications connections and main control module 244.Main put and Shaping Module 243 receive before the signal that sends of amplification module 241 amplify and be shaped to square wave after send to main control module 244.
In the utility model, neutron shield body 23 also comprises and is set in the drill collar 1 and the ring shielding body 232 between nearly probe 221 and neutron source 21.Use this ring shielding body 232 to can further improve shield effectiveness, improve the utility model logging accuracy.
In the utility model, nearly probe 221 is more than two with far detector 222 quantity.According to the diameter of slurry channel 3 and drill collar 1 and the size of probe, far detector 222 and nearly probe 221 can comprise a plurality of probes.Wherein, far detector 222 is made up of a plurality of He-3 probes, and is fixed on internal diameter and is a bit larger tham slurry channel 3 external diameters, external diameter be enough to place do in the hollow circular cylinder of He-3 probe as a whole.Nearly probe 221 is identical with far detector 222 structures.
The utility model adopts a plurality of nearly probes 221 and far detector 222, the counting of a plurality of probes can be obtained during well logging,, final formation porosity can be obtained by analysis-by-synthesis calculating by calculating many formation porosity curves, improve certainty of measurement, reduced ambient influnence.
In sum; it below only is preferable case study on implementation of the present utility model; be not to be used to limit protection domain of the present utility model; therefore; all any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. one kind with boring multi-detector neutron well logging device, it is characterized in that, comprising:
Drill collar;
Neutron logging instrument, described neutron logging instrument are set in the described drill collar, and inside is provided with the slurry channel of perforation, and described neutron logging instrument comprises:
Neutron source, described neutron source connection is arranged on described drill collar one end;
Neutron detector, described neutron detector comprises nearly probe and far detector, and described nearly probe and far detector parallel sleeve are located in the described drill collar and are positioned at described neutron source one side, and described nearly probe is near described neutron source;
Neutron shield body, described neutron shield body comprise the coating that is arranged on described slurry channel shell corresponding described far detector of difference and the nearly detector position;
Treatment circuit, described treatment circuit is set in the described drill collar, and is positioned at the side of described far detector away from described neutron source, and described treatment circuit communication connects described nearly probe and far detector.
2. as claimed in claim 1 with boring multi-detector neutron well logging device, it is characterized in that: described treatment circuit comprises:
Preceding amplification module, described preceding amplification module communication respectively connect described neutron detector and main putting and Shaping Module;
High-pressure modular, described high-pressure modular connects described main control module and neutron detector respectively;
Main putting and Shaping Module, described master is put and the communication of Shaping Module difference connects described preceding amplification module and main control module;
Main control module, described main control module connects described high-pressure modular, and communication connects that described master is put and Shaping Module and bus respectively.
3. as claimed in claim 1 with boring multi-detector neutron well logging device, it is characterized in that: described neutron shield body also comprises and is set in the described drill collar and the ring shielding body between described nearly probe and neutron source.
4. as claimed in claim 1 with boring multi-detector neutron well logging device, it is characterized in that: described nearly probe and far detector quantity are more than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200733555U CN201972699U (en) | 2011-03-18 | 2011-03-18 | Multi-detector while drilling neutron logging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200733555U CN201972699U (en) | 2011-03-18 | 2011-03-18 | Multi-detector while drilling neutron logging device |
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| Publication Number | Publication Date |
|---|---|
| CN201972699U true CN201972699U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200733555U Expired - Fee Related CN201972699U (en) | 2011-03-18 | 2011-03-18 | Multi-detector while drilling neutron logging device |
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| Country | Link |
|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527181A (en) * | 2012-07-05 | 2014-01-22 | 中国石油天然气集团公司 | Method and instrument for controllable source neutron logging during drilling |
| CN105986812A (en) * | 2015-02-13 | 2016-10-05 | 中国石油集团长城钻探工程有限公司 | Deuterium-deuterium controllable source compensated neutron logging instrument for wireline logging and corresponding method |
| CN108798653A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | One kind is with brill controllable neutron source independent source bin device |
| CN114412454A (en) * | 2022-02-14 | 2022-04-29 | 王静凯 | Oil drilling is with logging instrument while drilling with high-strength antidetonation function |
-
2011
- 2011-03-18 CN CN2011200733555U patent/CN201972699U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527181A (en) * | 2012-07-05 | 2014-01-22 | 中国石油天然气集团公司 | Method and instrument for controllable source neutron logging during drilling |
| CN103527181B (en) * | 2012-07-05 | 2016-12-21 | 中国石油天然气集团公司 | A kind of with boring controllable source neutron well logging method and instrument |
| CN105986812A (en) * | 2015-02-13 | 2016-10-05 | 中国石油集团长城钻探工程有限公司 | Deuterium-deuterium controllable source compensated neutron logging instrument for wireline logging and corresponding method |
| CN108798653A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | One kind is with brill controllable neutron source independent source bin device |
| CN114412454A (en) * | 2022-02-14 | 2022-04-29 | 王静凯 | Oil drilling is with logging instrument while drilling with high-strength antidetonation function |
| CN114412454B (en) * | 2022-02-14 | 2023-10-20 | 山东斯克尔地质勘探有限公司 | Logging while drilling instrument with high-strength anti-seismic function for petroleum drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20190318 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |