CN102979518B - A kind of directional gamma probe - Google Patents
A kind of directional gamma probe Download PDFInfo
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- CN102979518B CN102979518B CN201210541098.2A CN201210541098A CN102979518B CN 102979518 B CN102979518 B CN 102979518B CN 201210541098 A CN201210541098 A CN 201210541098A CN 102979518 B CN102979518 B CN 102979518B
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Abstract
The invention provides a kind of directional gamma probe, this inserting tube comprises gamma detector and is set in the shell outside gamma detector; This inserting tube also comprises: radome, and it is set in the position of gamma detector, for blocking gamma detector part gamma rays, realizing gamma detector and carrying out gamma-spectrometry with having direction; Reducer, it connects radome by rotating shaft; Motor, it is by rotating shaft connection reducer, and the rotation of motor exports and rotates centered by gamma detector is axial through reducer deceleration rear drive radome; Angular transducer, its power shaft connects radome, detects the relative rotation angle of radome and shell.The present invention is provided with radome, and realize gamma detector and can carry out carrying out gamma-spectrometry with having direction, structure is simple, requirement on machining accuracy is not high, execute-in-place is convenient, configurablely in the wireless measuring instrument while drilling of routine, provides orientation gamma-spectrometry value, has practicality and economy.
Description
Technical field
The present invention relates to a kind of sniffer for oil exploration drilling engineering, be specifically related to a kind of directional gamma probe for stratum natural gamma-spectrometry.
Background technology
In Process of Oil Well Drilling, often need to utilize the GR intensity with boring apparatus measures stratum, for determining formation lithology.
Overall gamma inserting tube has been widely applied in conventional wireless measuring instrument while drilling, this GR inserting tube is equipped with a sodium iodide crystal, be installed on drill collar central axis, its measured value be radius one foot centered by sodium iodide crystal spheric region in the coefficient result of GR ray.It by the statistical unit time from stratum all directions inject the gamma rays of sodium iodide crystal, calculate the overall gamma intensity on this stratum.
But when lithology is uneven, when being particularly positioned at the interface on stratum, overall GR is difficult to the feature responding stratum timely.Particularly when drilling tool horizontal drilling in oil reservoirs, when gamma value becomes large suddenly, often can not determine it is top or the bottom of having met reservoir, therefore can not change drilling direction timely, cause footage unpayable and cause waste man-hour.
The problems referred to above can solve with orientation gamma-spectrometry.Orientation gamma-spectrometry instrument adopts one or more sodium iodide crystal, makes each crystal can only receive a sector directions penetrating the gamma rays come, by being corresponded on each sector by GR measured value, realizing the measurement of orientation gamma by extra radome.
At present, orientation gamma-spectrometry instrument mostly is pipe nipple form, is arranged near drill bit, also referred to as orientation gamma-spectrometry pipe nipple.The result of use of orientation gamma-spectrometry pipe nipple is very good, but more complicated in supply of electric power and information transmission, and the quantity of the sensor of needs is two, and use cost is higher, and most use when well logging during.(patent: hole deviation and orientation gamma steering tool CN1676874A, a kind of rotation assembles gamma-spectrometry device and method CN101482014A)
Also there are some to produce house and manufactured directional gamma probe, for the wireless measuring instrument while drilling of routine, but on using, also have inconvenience more or less.
Patent (a kind of Self-locating type direction gamma measuring system CN102425402A) also has the radome on inserting tube axis similar to the present invention, and electric power and information transmission also with bearing supporting, and are carried out with conducting slip ring in radome two ends.Unlike, it does not have motor to drive and angular transducer, radome has been installed two crystal counters staggered relatively, and an eccentric weight pendulum, utilizes the gravity heavily put to make two crystal counters be in upper and lower position all the time.But conceivable, heavily put when vibrating slightly large and even do not stop upset by acutely swinging, cause measuring error; Even if when measuring correct, the gamma value of upper and lower both direction also can only be measured.
Patent (orientation Gamma logging device CN102230376A) structure is simple, and its radome, crystal counter, outer protection cylinder are relatively fixing, uses gravitational accelerometer to measure the tool-face position of inserting tube, thus carries out the division of covering of the fan.This method only for static or vibrate slight situation, high vibration and rotate and all will cause tool-face measuring error, under therefore it can only be used in slipping drilling situation mostly.But in order to realize the measurement of multiple covering of the fan, it needing again planned rotation inserting tube to other tool-face, this means to need driller ceaselessly to go to put the tool-face of drilling tool, also meaning longer Measuring Time and wasting manpower and material resources.
Summary of the invention
The invention provides a kind of directional gamma probe, configurable in conventional wireless measuring instrument while drilling, be used for measuring the orientation gamma intensity on stratum, there is practicality and economy.
For achieving the above object, the invention provides a kind of directional gamma probe, this inserting tube comprises gamma detector and is set in the shell outside gamma detector;
Be characterized in, this inserting tube also comprises:
Radome, it is set in the position of gamma detector, for blocking gamma detector part gamma rays, realizing gamma detector and carrying out gamma-spectrometry with having direction;
Reducer, it connects radome by rotating shaft;
Motor, it is by rotating shaft connection reducer, and the rotation of motor exports and rotates centered by gamma detector is axial through reducer deceleration rear drive radome;
Angular transducer, its power shaft connects radome, detects the relative rotation angle of radome and shell.
Above-mentioned radome adopts arc, and is arranged on the side of gamma detector, blocks gamma detector part gamma rays, realizes gamma detector and carry out gamma-spectrometry with having direction.
Above-mentioned radome adopts tubular construction, is set in outside gamma detector; This radome is provided with window, and gamma detector, through this window injection gamma rays, realizes gamma detector and carries out gamma-spectrometry with having direction.
Above-mentioned shell comprises resistance to compression cylinder.
Above-mentioned gamma detector is set to and is fixedly connected with shell, and radome is driven by motor and rotates relative to gamma detector.
Above-mentioned gamma detector is set to and is fixedly connected with radome, and this gamma detector and radome are jointly driven by motor and now rotate for shell.
Also gravitational accelerometer is provided with in above-mentioned directional gamma probe.
Directional gamma probe applicable working condition is slipping drilling, and when slipping drilling without the need to any operation and continuablely to measure.When slipping drilling, the instrument face amount of directional gamma probe can by arranging gravitational accelerometer in directional gamma probe, and the gravitational accelerometer measurement built-in with it gets, and also can come from the directed inserting tube of steering tool.Now, motor high-speed rotation, after reducer slows down, drive radome, or radome is together with gamma detector, slowly rotates, the power shaft of angular transducer also rotates thereupon simultaneously, at this moment can read gamma-spectrometry value and angle measurement simultaneously.Inserting tube instrument face amount, gamma-spectrometry value, angle measurement are calculated, the orientation gamma-spectrometry value by sector distribution can be obtained.
A kind of directional gamma probe of the present invention is compared with the gamma inserting tube of prior art, and its advantage is, the present invention is provided with radome, realizes gamma detector and can carry out carrying out gamma-spectrometry with having direction, have quite high practicality and economy;
Structure of the present invention is simple, and requirement on machining accuracy is not high, and execute-in-place is convenient, configurablely in the wireless measuring instrument while drilling of routine, provides orientation gamma-spectrometry value, is a kind of orientation gamma-spectrometry instrument taking into account practicality and economy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment one of a kind of directional gamma probe of the present invention;
Fig. 2 is the structural representation of the embodiment two of a kind of directional gamma probe of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, further illustrate specific embodiments of the invention.
As shown in Figure 1, be the embodiment one of directional gamma probe of the present invention.This directional gamma probe comprises gamma detector 26, shell 21, radome 25, reducer 23, motor 22 and angular transducer 24.
Gamma detector 26 connects external power source, exports gamma rays, the orientation gamma intensity on detection stratum.
The main body of shell 21 adopts resistance to compression cylinder, and it is set in outside gamma detector 26, carries out protection resistance to compression to above-mentioned gamma detector 26, radome 25, reducer 23, motor 22 and angular transducer 24.
Radome 25 is set in the position of gamma detector 26, in the present embodiment, radome 25 adopts arc plate structure, and be arranged on the side of gamma detector 26, for blocking gamma detector 26 part gamma rays, realizing gamma detector 26 and carrying out gamma-spectrometry with having direction.
Reducer 23 connects radome 25 by rotating shaft, and motor 22 is by rotating shaft connection reducer 23.The external external power source of motor 22, high-speed rotation after being energized, the rotation of motor 22 exports after reducer 23 slows down by rotating shaft driven shield cover 25 slow circumvolve centered by gamma detector 26 is axial.
In the present embodiment, gamma detector 26 can be designed to relatively be fixed on shell 21, also can be designed to be arranged on radome 25 and rotate together.
Be fixedly connected with shell 21 if gamma detector 26 is set to, then radome 25 is driven by motor 22 and rotates relative to gamma detector 26, carries out gamma-spectrometry with having direction to realize gamma detector 26.
Be fixedly connected with radome 25 if gamma detector 26 is set to, then this gamma detector 26 and radome 25 are jointly driven by motor 22 and now rotate for shell 21, carry out gamma-spectrometry with having direction to realize gamma detector 26.
The power shaft of angular transducer 24 connects radome 25, detects the relative rotation angle of radome 25 and shell 21.
The instrument face amount of directional gamma probe can by arranging gravitational accelerometer in directional gamma probe, and the gravitational accelerometer measurement built-in with it gets, and also can come from the directed inserting tube of steering tool.
The angle measurement of gamma-spectrometry value, inserting tube instrument face amount and angular transducer 24 detection that directional gamma probe described in the invention is measured by gamma detector 26, obtains orientation gamma-spectrometry value.
As shown in Figure 2, be the embodiment two of directional gamma probe of the present invention.In the present embodiment, directional gamma probe comprises lower end cap 1, lower fixed seat 2, motor 3, reducer 4, lower coupler 5, lower conducting slip ring 6, gamma detector 7, upper conducting slip ring 8, upper coupling 9, upper fixed seat 10, upper plug head 11, angular transducer 12, upper bearing (metal) 13, radome 14, lower bearing 15, resistance to compression cylinder 16, control circuit board 17.
Lower end cap 1, upper plug head 11 are arranged at the two ends of resistance to compression cylinder 16 respectively, and this lower end cap 1, upper plug head 11 form with resistance to compression cylinder 16 shell sealed.Above-mentioned lower fixed seat 2, motor 3, reducer 4, lower coupler 5, lower conducting slip ring 6, gamma detector 7, upper conducting slip ring 8, upper coupling 9, upper fixed seat 10, angular transducer 12, upper bearing (metal) 13, radome 14, lower bearing 15, control circuit board 17 are all arranged in the can of lower end cap 1, upper plug head 11 and resistance to compression cylinder 16 composition.
Lower fixed seat 2 is fixed on inside lower end cap 1, and lower fixed seat 2 one end is connected with lower end cap 1, and the other end connects lower conducting slip ring 6.Upper fixed seat 10 is fixed on inside upper plug head 11, and upper fixed seat 10 one end is connected with upper plug head 11, and the other end connects upper conducting slip ring 8.Gamma detector 7 is fixed between lower conducting slip ring 6 and upper conducting slip ring 8.Radome 14 is set on gamma detector 7, and this radome 14 adopts tubular construction, and is provided with a rectangular window, and gamma detector 7, through this window injection gamma rays, realizes gamma detector 7 and carries out gamma-spectrometry with having direction.
Motor 3, reducer 4, lower coupler 5 are fixed in lower fixed seat 2 successively by downward conducting slip ring 6 one end, lower end cap 1 one end.The output shaft of motor 3 is connected with reducer 4, and the output shaft of reducer 4 is connected with lower coupler 5, lower coupler 5 by driven shaft through lower conducting slip ring 6 and radome 14(or gamma detector 7 and radome 14) lower end be connected.Between lower conducting slip ring 6 and lower coupler 5, driven shaft is also arranged with lower bearing 15.Motor 3 external power supply rotational speed, its output shaft is connected to reducer 4, after reducer 4 slows down, be sent to lower coupler 5 by the output shaft of reducer 4, lower coupler 5 is by a driven shaft driven shield cover 14(or gamma detector 7 and radome 14) slowly rotate.
With in sample embodiment, gamma detector 7 can be designed to relatively be fixed on resistance to compression cylinder 16, also can be designed to be arranged on radome 14 and rotate together.
Be fixedly connected with resistance to compression cylinder 16 if gamma detector 7 is set to, and only have radome 14 to connect motor 3, then radome 14 is driven by motor 3 and rotates relative to gamma detector 7, carries out gamma-spectrometry with having direction to realize gamma detector 7.
Be fixedly connected with radome 14 if gamma detector 7 is set to, then this gamma detector 7 and radome 14 are jointly driven by motor 3 and now rotate for resistance to compression cylinder 16, carry out gamma-spectrometry with having direction to realize gamma detector 7.
Angular transducer 12 is fixed in upper fixed seat 10, the input of angular transducer 12 by a rotating shaft through upper conducting slip ring 8 and radome 14(or gamma detector 7 and radome 14) upper end be connected, the relative angle between measurement radome 14 and resistance to compression cylinder 16.
Angular transducer 12 with the rotating shaft of upper conducting slip ring 8 are arranged with upper bearing (metal) 13.
The instrument face amount of directional gamma probe can by arranging gravitational accelerometer in directional gamma probe, and the gravitational accelerometer measurement built-in with it gets, and also can come from the directed inserting tube of steering tool.
In upper fixed seat 10, be also provided with control circuit board 17, this control circuit board 17 is connected with lower conducting slip ring 6 and upper conducting slip ring 8 circuit respectively.Upper conducting slip ring 8 circuit connection angle sensor 12, lower conducting slip ring 6 circuit connects motor 3, reducer 4, the connection of gamma detector 7 circuit.
Control circuit board 17 controls the running of motor 3, reducer 4, gamma detector 7, angular transducer 12 respectively by lower conducting slip ring 6 and upper conducting slip ring 8, and receive the angle measurement of gamma-spectrometry value, inserting tube instrument face amount and angular transducer 12 detection that gamma detector 7 is measured, to calculate orientation gamma-spectrometry value.
The workflow of the directional gamma probe described by above-described embodiment two is as follows:
Directional gamma probe applicable working condition is slipping drilling, and when slipping drilling without the need to any operation and continuablely to measure.When slipping drilling, the instrument face amount of directional gamma probe can by arranging gravitational accelerometer in directional gamma probe, and the gravitational accelerometer measurement built-in with it gets, and also can come from the directed inserting tube of steering tool.Now, motor high-speed rotation, after reducer slows down, radome (or radome is together with gamma detector) is driven slowly to rotate, the power shaft of angular transducer also rotates thereupon simultaneously, each road electric power and signal are transmitted by the conducting slip ring at two ends, at this moment can read gamma-spectrometry value and angle measurement simultaneously.Inserting tube instrument face amount, gamma-spectrometry value, angle measurement are sent to control circuit board and calculate, the orientation gamma-spectrometry value by sector distribution can be obtained.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. a directional gamma probe, this inserting tube comprises gamma detector (26) and is set in described gamma detector (26) shell outward (21);
It is characterized in that, this inserting tube also comprises:
Radome (25), it is set in the position of described gamma detector (26) and is fixedly connected with gamma detector (26), for blocking gamma detector (26) part gamma rays, realizing gamma detector (26) and carrying out gamma-spectrometry with having direction;
Reducer (23), its connected by rotating shaft described in radome (25);
Motor (22), its connected by rotating shaft described in reducer (23), the rotation of motor (22) exports after described reducer (23) slows down, and driven shield cover (25) and gamma detector (26) rotate jointly relative to shell (21);
Angular transducer (24), its power shaft connects described radome (25), detects the relative rotation angle of radome (25) and shell (21).
2. directional gamma probe as claimed in claim 1, it is characterized in that, described radome (25) adopts arc, and be arranged on the side of described gamma detector (26), block gamma detector (26) part gamma rays, realize gamma detector (26) and carry out gamma-spectrometry with having direction.
3. directional gamma probe as claimed in claim 1, is characterized in that, described radome adopts tubular construction, is set in outside described gamma detector; This radome is provided with window, and gamma detector, through this window injection gamma rays, realizes gamma detector and carries out gamma-spectrometry with having direction.
4. directional gamma probe as claimed in claim 1, it is characterized in that, described shell (21) comprises resistance to compression cylinder.
5. directional gamma probe as claimed in claim 1, it is characterized in that, described gamma detector (26) is set to and is fixedly connected with described radome (25), and this gamma detector (26) and radome (25) are jointly driven by motor (22) and rotate relative to described shell (21).
6. directional gamma probe as claimed in claim 1, is characterized in that, be also provided with gravitational accelerometer in described directional gamma probe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210541098.2A CN102979518B (en) | 2012-12-14 | 2012-12-14 | A kind of directional gamma probe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210541098.2A CN102979518B (en) | 2012-12-14 | 2012-12-14 | A kind of directional gamma probe |
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| Publication Number | Publication Date |
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| CN102979518A CN102979518A (en) | 2013-03-20 |
| CN102979518B true CN102979518B (en) | 2015-12-30 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE112015006191T5 (en) * | 2015-02-19 | 2017-10-26 | Halliburton Energy Services, Inc. | Gamma detection sensors in a steerable turning tool |
| CN109322662A (en) * | 2018-12-05 | 2019-02-12 | 贝兹维仪器(苏州)有限公司 | A kind of measurement while drilling pipe nipple |
| CN109488289A (en) * | 2018-12-05 | 2019-03-19 | 贝兹维仪器(苏州)有限公司 | A kind of multi-parameter drilling measuring equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4228350A (en) * | 1977-12-12 | 1980-10-14 | Texaco Inc. | Method and apparatus for measuring underground fluid flow characteristics |
| US5386114A (en) * | 1992-12-25 | 1995-01-31 | Riken Denshi Co., Ltd. | Detector for activity direction of magma |
| 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 |
| CN202954811U (en) * | 2012-12-14 | 2013-05-29 | 上海神开石油化工装备股份有限公司 | Direction gamma probe |
-
2012
- 2012-12-14 CN CN201210541098.2A patent/CN102979518B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4228350A (en) * | 1977-12-12 | 1980-10-14 | Texaco Inc. | Method and apparatus for measuring underground fluid flow characteristics |
| US5386114A (en) * | 1992-12-25 | 1995-01-31 | Riken Denshi Co., Ltd. | Detector for activity direction of magma |
| 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 |
| CN202954811U (en) * | 2012-12-14 | 2013-05-29 | 上海神开石油化工装备股份有限公司 | Direction gamma probe |
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Effective date of registration: 20190325 Address after: Two Blocks 1769 Puxing Highway, Minhang District, Shanghai, 20114 Co-patentee after: Shanghai Shenkai Petroleum & Chemical Equipment Corporation Ltd. Patentee after: Shanghai Shen Kai Petroleum Measurement and Control Technology Co., Ltd. Co-patentee after: Shanghai Shenkai Petroleum Equipment Co., Ltd. Address before: 201114, Shanghai, Minhang District Pu Xing Road No. 1769 Co-patentee before: Shanghai Shenkai Petroleum Equipment Co., Ltd. Patentee before: Shanghai Shenkai Petroleum & Chemical Equipment Corporation Ltd. |
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