CN102230376A - Azimuth gamma well-logging device - Google Patents
Azimuth gamma well-logging device Download PDFInfo
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- CN102230376A CN102230376A CN2011101527511A CN201110152751A CN102230376A CN 102230376 A CN102230376 A CN 102230376A CN 2011101527511 A CN2011101527511 A CN 2011101527511A CN 201110152751 A CN201110152751 A CN 201110152751A CN 102230376 A CN102230376 A CN 102230376A
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- gravity meter
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Abstract
The embodiment of the invention discloses an azimuth gamma well-logging device. The device comprises a gravity accelerometer and a gamma detector. Gamma values of different directions can be measured through shielding the gamma detector, detecting directions of the gamma detector can be determined by utilizing the gravity accelerometer, so that a natural gamma value of every azimuth in stratum is detected. The azimuth gamma well-logging device can be used for measuring the gamma values of all azimuthes, thereby timely determining concrete positions of a while-drilling instrument being apart from the upper and the lower stratigraphical boundaries, and ensuring that the while-drilling instrument keeps drilling into reservoirs and then greatly increasing the drilling meeting rate.
Description
Technical field
The present invention relates to well logging during systems technology field, relate in particular to a kind of orientation gamma logging device.
Background technology
At present, in the well logging during system, measuring gamma orientation and parameter in real time is very important, gamma value by the last gamma of continuous measurement down-hole equipment, following gamma and all directions, for example 360 degree are divided into 8 districts, measure the gamma value in each district, help judge with boring instrument stratum of living in, and monitor the situation of change on stratum at any time according to orientation gamma real time data, to whether getting target zone and can make rapidly and accurately and judging with boring instrument.
But in the prior art scheme, though natural gamma measuring apparatus energy measurement gamma, but can not accurately judge the direction of gamma, by the gamma ray log curve, Substance Properties and data in the stratum that can determine to exist, but can't be accurate to the formation variation situation of which direction, just can't judge and discern for the character of bad ground like this.
Summary of the invention
The purpose of this invention is to provide a kind of orientation gamma logging device, can measure the gamma value in each orientation, thereby in time judge, make with boring instrument to keep creeping in the reservoir always, increase substantially the brill encountering rate with boring the instrument distance particular location of stratigraphic boundary up and down.
The objective of the invention is to be achieved through the following technical solutions:
A kind of orientation gamma logging device, described device comprises acceleration of gravity meter and gamma detector, wherein:
Measure the gamma value of different directions by blocking described gamma detector, and utilize described acceleration of gravity meter to determine the detection direction of described gamma detector, realize surveying the natural gamma value in each orientation in the stratum.
Describedly measure the gamma value of different directions, specifically comprise by blocking described gamma detector:
Increase barrier bed around described gamma detector, this barrier bed blocks the part of gamma detector, makes to have only the incident gamma rays of part direction to be detected, and realizes that the gamma of directionality is surveyed.
The described detection direction that utilizes described acceleration of gravity meter to determine described gamma detector specifically comprises:
The placement direction of described acceleration of gravity meter and the detection direction of gamma detector are consistent;
Determine the position of this acceleration of gravity meter by the output that detects the acceleration of gravity meter, thereby determine the detection direction of described gamma detector.
Described device also comprises first amplifier, second amplifier, counter, D/A, signal processing unit and CPU processing unit, wherein:
Described first amplifier receives the output signal of described gamma detector and signal is amplified, and outputs to described counter then;
Described counter is by realizing the measurement of gamma value to the counting of described first amplifier output signal;
Described second amplifier receives the output signal of described acceleration of gravity meter and signal is amplified, and outputs to described D/A then;
Described D/A is realized the conversion of described acceleration of gravity meter signal imitation amount to digital quantity;
Described signal processing unit reads the digital quantity after the conversion, and calculates the positional information of described acceleration of gravity meter;
Described CPU processing unit reads the gamma value data of described counter and the acceleration of gravity meter positional information of signal processing unit in real time, judges the orientation of current gamma value data, thereby determines the detection direction of described gamma detector.
Described gamma detector comprises 1 inch diameter and two kinds of models of 0.75 inch diameter are waited to select, and specifically selects decision according to the actual requirements.
As seen from the above technical solution provided by the invention, described device comprises acceleration of gravity meter and gamma detector, measure the gamma value of different directions by blocking described gamma detector, and utilize described acceleration of gravity meter to determine the detection direction of described gamma detector, realize surveying the natural gamma value in each orientation in the stratum.This device can be measured the gamma value in each orientation, thereby in time judges with boring the instrument distance particular location of stratigraphic boundary up and down, makes with boring instrument to keep creeping in the reservoir always, increases substantially the brill encountering rate.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of the orientation gamma logging device that the embodiment of the invention provided;
Fig. 2 is the frame for movement schematic diagram of the orientation gamma logging device that the embodiment of the invention provided.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that is obtained under the creative work prerequisite.
The orientation gamma is meant drilling tool in drilling process, and the measurement by the gamma detector directionality keeps drilling tool to creep in the well track of regulation, and the direction that control is crept into makes it not pass target coal seam or oil and gas reservoir border in drilling process.The embodiment of the invention specifically is to measure the gamma value of different directions by blocking described gamma detector, and utilizes described acceleration of gravity meter to determine the detection direction of described gamma detector, realizes surveying the natural gamma value in each orientation in the stratum.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail; be illustrated in figure 1 as the structural representation of the orientation gamma logging device that the embodiment of the invention provides; be illustrated in figure 2 as the frame for movement schematic diagram of the orientation gamma logging device that the embodiment of the invention provides; among Fig. 2: 1 is last end interface; 2 is outer protection tube, and 3 is circuit board, and 4 is the gravity accelerometer; 5 is gamma detector, and 6 is barrier bed.Wherein:
By around gamma detector, increasing the gamma-spectrometry that barrier bed is realized directionality, specifically: around described gamma detector, increase barrier bed, barrier bed blocks the part of gamma detector, because barrier bed is partly eliminated the gamma rays of incident, only the incident gamma rays of part direction can be detected, and just can realize that therefore the gamma of directionality is surveyed.
Simultaneously, utilize described acceleration of gravity meter to determine the detection direction of described gamma detector, specifically: the placement direction of acceleration of gravity meter and the detection direction of gamma detector are consistent; Determine the position of this acceleration of gravity meter by the output that detects the acceleration of gravity meter, thereby determine the detection direction of described gamma detector.
In addition, as shown in Figure 1, described device also comprises first amplifier (amplifier 1 among Fig. 1), second amplifier (amplifier 2 among Fig. 1), counter, D/A (A/D) converter, signal processing unit and CPU processing unit, wherein:
Described first amplifier receives the output signal of described gamma detector and signal is amplified, and outputs to described counter then;
Described counter is by realizing the measurement of gamma value to the counting of described first amplifier output signal;
Described second amplifier receives the output signal of described acceleration of gravity meter and signal is amplified, and outputs to described D/A then;
Described D/A is realized the conversion of described acceleration of gravity meter signal imitation amount to digital quantity;
Described signal processing unit reads the digital quantity after the conversion, and calculates the positional information of described acceleration of gravity meter;
Described CPU processing unit reads the gamma value data of described counter and the acceleration of gravity meter positional information of signal processing unit in real time, judge the orientation of current gamma value data, thereby determine the detection direction of described gamma detector, and upload storage gamma data.
In addition, when rotated, this orientation gamma logging device can real time record gamma detection direction and gamma detection data, can realize the detection of each orientation gamma by continuing gyrobearing gamma logging device.
In the specific implementation process, gamma detector has two kinds of models to wait to select, and first kind is 1 inch diameter gamma detector; Second kind is the gamma detector of 0.75 inch diameter.Select which kind of model to decide according to the actual requirements.
In addition, the calibration process of orientation gamma logging device is:
Orientation gamma logging device is put in the non magnetic drill collar, under noiseless environment, the count value of test orientation gamma; Then the gamma graduator is placed into the position that is positioned at this orientation gamma logging device on the non magnetic drill collar, the count value of test orientation gamma.The count value that obtains for twice is carried out computing, draw the K value that gamma is demarcated, direction gamma American Petroleum Institute (American Petro Institute, calculating API) when this K value is used for measurement while drilling.
After obtaining demarcating the K value, the gamma value of orientation gamma-spectrometry can correctly be converted to the API value, and the numerical value of orientation gamma-spectrometry can be measured numerical value with other logging tools and do contrast verification like this, convenient further comparatively validate.
In sum, the described orientation of embodiment of the invention gamma logging device is applicable to oil gas well and coal bed gas well, particularly the coal bed gas for complicated structure is very effective, particularly suitable in high-inclination directional well and horizontal well drilling, orientation gamma logging device is used for the horizontal well of orientation or geosteering, can in time judge the instrument distance particular location of stratigraphic boundary up and down, make drilling tool keep creeping in the reservoir always, utilize this instrument can improve the brill encountering rate significantly.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (5)
1. an orientation gamma logging device is characterized in that described device comprises acceleration of gravity meter and gamma detector, wherein:
Measure the gamma value of different directions by blocking described gamma detector, and utilize described acceleration of gravity meter to determine the detection direction of described gamma detector, realize surveying the natural gamma value in each orientation in the stratum.
2. orientation as claimed in claim 1 gamma logging device is characterized in that, describedly measures the gamma value of different directions by blocking described gamma detector, specifically comprises:
Increase barrier bed around described gamma detector, this barrier bed blocks the part of gamma detector, makes to have only the incident gamma rays of part direction to be detected, and realizes that the gamma of directionality is surveyed.
3. orientation as claimed in claim 1 gamma logging device is characterized in that, the described detection direction that utilizes described acceleration of gravity meter to determine described gamma detector specifically comprises:
The placement direction of described acceleration of gravity meter and the detection direction of gamma detector are consistent;
Determine the position of this acceleration of gravity meter by the output that detects the acceleration of gravity meter, thereby determine the detection direction of described gamma detector.
4. orientation as claimed in claim 1 gamma logging device is characterized in that described device also comprises first amplifier, second amplifier, counter, D/A, signal processing unit and CPU processing unit, wherein:
Described first amplifier receives the output signal of described gamma detector and signal is amplified, and outputs to described counter then;
Described counter is by realizing the measurement of gamma value to the counting of described first amplifier output signal;
Described second amplifier receives the output signal of described acceleration of gravity meter and signal is amplified, and outputs to described D/A then;
Described D/A is realized the conversion of described acceleration of gravity meter signal imitation amount to digital quantity;
Described signal processing unit reads the digital quantity after the conversion, and calculates the positional information of described acceleration of gravity meter;
Described CPU processing unit reads the gamma value data of described counter and the acceleration of gravity meter positional information of signal processing unit in real time, judges the orientation of current gamma value data, thereby determines the detection direction of described gamma detector.
5. orientation as claimed in claim 1 gamma logging device is characterized in that, described gamma detector comprises 1 inch diameter and two kinds of models of 0.75 inch diameter are waited to select, and specifically selects decision according to the actual requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101527511A CN102230376A (en) | 2011-06-08 | 2011-06-08 | Azimuth gamma well-logging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101527511A CN102230376A (en) | 2011-06-08 | 2011-06-08 | Azimuth gamma well-logging device |
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| CN102230376A true CN102230376A (en) | 2011-11-02 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425402A (en) * | 2011-12-23 | 2012-04-25 | 中天启明石油技术有限公司 | Self-locating type direction gamma measuring system |
| CN102518425A (en) * | 2011-12-30 | 2012-06-27 | 斯伦贝谢金地伟业油田技术(山东)有限公司 | Directional gamma logging-while-drilling tool |
| CN103912265A (en) * | 2013-01-06 | 2014-07-09 | 中国石油化工股份有限公司 | Experimental device for orientation gamma-ray tool |
| CN104763412A (en) * | 2015-02-13 | 2015-07-08 | 中煤科工集团西安研究院有限公司 | Orientation gamma detecting tube for underground coal-seam-following drilling monitoring of coal mine |
| CN106285632A (en) * | 2016-09-30 | 2017-01-04 | 上海神开石油设备有限公司 | Orientation gamma measuring apparatus and acquisition method |
| CN107035358A (en) * | 2017-03-20 | 2017-08-11 | 中国科学院地质与地球物理研究所 | A kind of nearly drill bit gamma Imaging Simulation experimental provision |
| CN108625845A (en) * | 2017-03-17 | 2018-10-09 | 中石化石油工程技术服务有限公司 | One kind decoupling scale method and graduation apparatus with orientation gamma is bored |
| CN109798103A (en) * | 2019-01-31 | 2019-05-24 | 中国科学院地质与地球物理研究所 | A kind of drill-following natural gamma power spectrum graduation apparatus |
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| CN2627214Y (en) * | 2003-03-28 | 2004-07-21 | 中国石油天然气集团公司 | Multiple parameter ultrasonic engineering logging device |
| CN1676874A (en) * | 2005-04-14 | 2005-10-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN101482014A (en) * | 2009-02-23 | 2009-07-15 | 中国石化集团胜利石油管理局钻井工艺研究院 | Rotary-focusing gamma measuring apparatus and method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2627214Y (en) * | 2003-03-28 | 2004-07-21 | 中国石油天然气集团公司 | Multiple parameter ultrasonic engineering logging device |
| CN1676874A (en) * | 2005-04-14 | 2005-10-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN101482014A (en) * | 2009-02-23 | 2009-07-15 | 中国石化集团胜利石油管理局钻井工艺研究院 | Rotary-focusing gamma measuring apparatus and method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425402A (en) * | 2011-12-23 | 2012-04-25 | 中天启明石油技术有限公司 | Self-locating type direction gamma measuring system |
| CN102518425A (en) * | 2011-12-30 | 2012-06-27 | 斯伦贝谢金地伟业油田技术(山东)有限公司 | Directional gamma logging-while-drilling tool |
| CN103912265A (en) * | 2013-01-06 | 2014-07-09 | 中国石油化工股份有限公司 | Experimental device for orientation gamma-ray tool |
| CN104763412A (en) * | 2015-02-13 | 2015-07-08 | 中煤科工集团西安研究院有限公司 | Orientation gamma detecting tube for underground coal-seam-following drilling monitoring of coal mine |
| CN106285632A (en) * | 2016-09-30 | 2017-01-04 | 上海神开石油设备有限公司 | Orientation gamma measuring apparatus and acquisition method |
| CN106285632B (en) * | 2016-09-30 | 2023-07-18 | 上海神开石油测控技术有限公司 | Azimuth gamma measuring device and acquisition method |
| CN108625845A (en) * | 2017-03-17 | 2018-10-09 | 中石化石油工程技术服务有限公司 | One kind decoupling scale method and graduation apparatus with orientation gamma is bored |
| CN108625845B (en) * | 2017-03-17 | 2021-08-24 | 中石化石油工程技术服务有限公司 | While-drilling orientation gamma decoupling calibration method and calibration device |
| CN107035358A (en) * | 2017-03-20 | 2017-08-11 | 中国科学院地质与地球物理研究所 | A kind of nearly drill bit gamma Imaging Simulation experimental provision |
| CN109798103A (en) * | 2019-01-31 | 2019-05-24 | 中国科学院地质与地球物理研究所 | A kind of drill-following natural gamma power spectrum graduation apparatus |
| CN109798103B (en) * | 2019-01-31 | 2020-07-10 | 中国科学院地质与地球物理研究所 | Natural gamma energy spectrum calibration device while drilling |
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Application publication date: 20111102 |