CN102979518A - Directional gamma probe - Google Patents
Directional gamma probe Download PDFInfo
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- CN102979518A CN102979518A CN2012105410982A CN201210541098A CN102979518A CN 102979518 A CN102979518 A CN 102979518A CN 2012105410982 A CN2012105410982 A CN 2012105410982A CN 201210541098 A CN201210541098 A CN 201210541098A CN 102979518 A CN102979518 A CN 102979518A
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- gamma detector
- inserting tube
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Abstract
The invention provides a directional gamma probe, which comprises a gamma detector and a shell sleeved outside the gamma detector, and also comprises a shielding case, a speed reducer, a motor and an angle sensor, wherein the shielding case is sleeved at the position of the gamma detector, and is used for keeping off parts of gamma rays of the gamma detector, and realizing directional gamma measurement by the gamma detector; the speed reducer is connected with the shielding case through a rotating shaft; the motor is connected with the speed reducer through a rotating shaft; after the speed of rotation output of the motor is reduced by the speed reducer, the shielding case is driven to rotate by taking the axial direction of the gamma detector as a center; an input shaft of the angle sensor is connected with the shielding case; and the relative rotating angle of the shielding case and the shell is detected by the angle sensor. The directional gamma probe provided by the invention is provided with the shielding case; the directional gamma measurement can be realized by the gamma detector; the structure is simple, the processing precision requirements are not high, and the on-site operation is convenient; and the directional gamma probe can be configured in a conventional wireless measurement instrument while drilling to provide a directional gamma measurement value, and has practical applicability and economy.
Description
Technical field
The present invention relates to a kind of sniffer for the oil exploration drilling engineering, be specifically related to a kind of orientation gamma inserting tube for the stratum natural gamma-spectrometry.
Background technology
In Process of Oil Well Drilling, often need to utilize the GR intensity with boring the apparatus measures stratum, be used for determining formation lithology.
Widely applied overall gamma inserting tube in the conventional wireless measuring instrument while drilling, this GR inserting tube is equipped with a sodium iodide crystal, be installed on the drill collar central axis, its measured value is the coefficient result of GR ray in the spheric region of one foot of radius centered by the sodium iodide crystal.It by statistical unit in the time from the stratum all directions inject the gamma rays of sodium iodide crystal, calculate the overall gamma intensity on this stratum.
Yet inhomogeneous when lithology, when particularly being positioned at the interface on stratum, overall GR is difficult to respond timely the characteristics on stratum.Particularly when drilling tool horizontal drilling in oil reservoirs, when gamma value becomes suddenly large, often can not determine it is top or the bottom of having met reservoir, therefore can not change timely drilling direction, cause invalid drilling depth and cause the waste in man-hour.
The problems referred to above can solve with the orientation gamma-spectrometry.Orientation gamma-spectrometry instrument adopts one or more sodium iodide crystals, makes each crystal can only receive a sector directions by extra radome and penetrates next gamma rays, by the GR measured value is corresponded on each sector, realize the measurement of orientation gamma.
At present, orientation gamma-spectrometry instrument mostly is the pipe nipple form, is installed near the drill bit, is also referred to as orientation gamma-spectrometry pipe nipple.The result of use of orientation gamma-spectrometry pipe nipple is very good, but complicated on supply of electric power and communication, the quantity of the sensor that needs is two, and use cost is higher, and most are used when well logging during.(patent: hole deviation and orientation gamma steering tool CN1676874A, gamma-spectrometry device and method CN101482014A is assembled in a kind of rotation)
Also there are some to produce house and made orientation gamma inserting tube, be used for conventional wireless measuring instrument while drilling, but inconvenience is more or less also arranged in the use.
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 also support with bearing at the radome two ends, and carries out electric power and communication with conducting slip ring.Different is that it does not have motor-driven and angular transducer, and two crystal counters staggered relatively have been installed on the radome, and an eccentric weight pendulum, utilizes the gravity of heavily putting to make two crystal counters be in all the time the upper and lower position.Yet conceivablely be, when vibration is slightly large, heavily put and even do not stop upset with acutely swinging, cause measuring error; Even when measurement is correct, also can only measure the gamma value of upper and lower both direction.
(orientation gamma well logging apparatus CN102230376A) is simple in structure for patent, and its radome, crystal counter, outer protection cylinder are relatively fixing, uses the tool-face position of acceleration of gravity instrumentation amount inserting tube, thereby carries out the division of covering of the fan.This method only is used for static or vibrates slight situation, and high vibration and rotation all will cause the tool-face measuring error, so it mostly can only be used in to slide and creeps in the situation.But in order to realize the measurement of a plurality of covering of the fans, it needs again planned rotation inserting tube to other tool-face, this means the tool-face that needs the driller ceaselessly to remove to put drilling tool, also means longer Measuring Time and wasting manpower and material resources.
Summary of the invention
The invention provides a kind of orientation gamma inserting tube, configurable in conventional wireless measuring instrument while drilling, be used for measuring the orientation gamma intensity on stratum, have practicality and economy.
For achieving the above object, the invention provides a kind of orientation gamma inserting tube, this inserting tube comprises gamma detector and is set in the outer shell of gamma detector;
Be characterized in that this inserting tube also comprises:
Radome, it is set in the position of gamma detector, is used for blocking gamma detector part gamma rays, realizes that gamma detector has direction ground to carry out gamma-spectrometry;
Reducer, it connects radome by rotating shaft;
Motor, it is by the rotating shaft connection reducer, and the rotation of motor output is through the rotation centered by gamma detector is axial of 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 a side of gamma detector, blocks gamma detector part gamma rays, realizes that gamma detector has direction ground to carry out gamma-spectrometry.
Above-mentioned radome adopts tubular construction, is set in outside the gamma detector; This radome is provided with window, and gamma detector sees through this window and penetrates gamma rays, realizes that gamma detector has direction ground to carry out gamma-spectrometry.
Above-mentioned shell comprises the resistance to compression cylinder.
Above-mentioned gamma detector is made as with shell and is fixedly connected with, and radome is rotated with respect to gamma detector by motor-driven.
Above-mentioned gamma detector is made as with radome and is fixedly connected with, and this gamma detector and radome rotate for shell by motor-driven is existing jointly.
Also be provided with the acceleration of gravity meter in the above-mentioned orientation gamma inserting tube.
Orientation gamma inserting tube applicable working condition creeps into for sliding, and need not when slip is crept into that any operation is continuable measures.When slip was crept into, the instrument face amount of orientation gamma inserting tube can measure with its built-in acceleration of gravity instrumentation by in orientation gamma inserting tube the acceleration of gravity meter being set, and also can come from the directed inserting tube of steering tool.At this moment, the motor high speed rotating after reducer slows down, drives radome, or radome slowly rotates with gamma detector, and the power shaft of angular transducer also rotates thereupon simultaneously, at this moment can read simultaneously gamma-spectrometry value and angle measurement.Inserting tube instrument face amount, gamma-spectrometry value, angle measurement are calculated, can be obtained the orientation gamma-spectrometry value that distributes by the sector.
The gamma inserting tube of a kind of orientation of the present invention gamma inserting tube and prior art is compared, and its advantage is that the present invention is provided with radome, realizes that gamma detector can have direction ground to carry out gamma-spectrometry, has quite high practicality and economy;
The present invention is simple in structure, and requirement on machining accuracy is not high, and execute-in-place is convenient, and the configurable orientation gamma-spectrometry value that provides in the wireless measuring instrument while drilling of routine is a kind of orientation gamma-spectrometry instrument of taking into account practicality and economy.
Description of drawings
Fig. 1 is the structural representation of the embodiment one of a kind of orientation of the present invention gamma inserting tube;
Fig. 2 is the structural representation of the embodiment two of a kind of orientation of the present invention gamma inserting tube.
The specific embodiment
Below in conjunction with accompanying drawing, further specify specific embodiments of the invention.
As shown in Figure 1, be the embodiment one of orientation of the present invention gamma inserting tube.This orientation gamma inserting tube comprises gamma detector 26, shell 21, radome 25, reducer 23, motor 22 and angular transducer 24.
The main body of shell 21 adopts the resistance to compression cylinder, and it is set in outside the gamma detector 26, and above-mentioned gamma detector 26, radome 25, reducer 23, motor 22 and angular transducer 24 are protected resistance to compression.
Radome 25 is set in the position of gamma detector 26, radome 25 adopts arc plate structure in the present embodiment, and be arranged on a side of gamma detector 26, and be used for blocking gamma detector 26 part gamma rayss, realize that gamma detector 26 can have direction ground to carry out gamma-spectrometry.
Reducer 23 connects radome 25 by rotating shaft, and motor 22 is by rotating shaft connection reducer 23.Motor 22 external external power sources, high speed rotating after the energising, the rotation of motor 22 output 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 the shell 21, also can be designed to be installed on the radome 25 rotate together.
If gamma detector 26 is made as with shell 21 and is fixedly connected with, then radome 25 is driven with respect to gamma detector 26 rotations by motor 22, can have direction ground to carry out gamma-spectrometry to realize gamma detector 26.
If gamma detector 26 is made as with radome 25 and is fixedly connected with, then this gamma detector 26 is jointly driven now by motor 22 with radome 25 and rotates for shell 21, can have direction ground to carry out gamma-spectrometry 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 orientation gamma inserting tube can measure with its built-in acceleration of gravity instrumentation by in orientation gamma inserting tube the acceleration of gravity meter being set, and also can come from the directed inserting tube of steering tool.
The angle measurement that the gamma-spectrometry value that orientation gamma inserting tube described in the invention is measured by gamma detector 26, inserting tube instrument face amount and angular transducer 24 are surveyed obtains orientation gamma-spectrometry value.
As shown in Figure 2, be the embodiment two of orientation of the present invention gamma inserting tube.In the present embodiment, orientation gamma inserting tube 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 respectively the two ends of resistance to compression cylinder 16, and this lower end cap 1, upper plug head 11 form the shell that seals with resistance to compression cylinder 16.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 all are arranged in the can of lower end cap 1, upper plug head 11 and resistance to compression cylinder 16 compositions.
Lower fixed seat 2 is fixed in lower end cap 1 inboard, and lower fixed seat 2 one ends are connected with lower end cap 1, and the other end connects lower conducting slip ring 6.Upper fixed seat 10 is fixed in upper plug head 11 inboards, and upper fixed seat 10 1 ends are connected with upper plug head 11, and the other end connects upper conducting slip ring 8.7 of gamma detectors are fixed between lower conducting slip ring 6 and the upper conducting slip ring 8.Radome 14 is set on the gamma detector 7, and this radome 14 adopts tubular construction, and is provided with a rectangular window, and gamma detector 7 sees through this window and penetrates gamma rays, realizes that gamma detector 7 has direction ground to carry out gamma-spectrometry.
In the same present embodiment, gamma detector 7 can be designed to relatively be fixed on the resistance to compression cylinder 16, also can be designed to be installed on the radome 14 and rotate together.
If gamma detector 7 is made as with resistance to compression cylinder 16 and is fixedly connected with, and only have radome 14 to connect motor 3, then radome 14 is driven with respect to gamma detector 7 rotations by motor 3, can have direction ground to carry out gamma-spectrometry to realize gamma detector 7.
If gamma detector 7 is made as with radome 14 and is fixedly connected with, then this gamma detector 7 is jointly driven now by motor 3 with radome 14 and rotates for resistance to compression cylinder 16, can have direction ground to carry out gamma-spectrometry to realize gamma detector 7.
Rotating shaft at angular transducer 12 and upper conducting slip ring 8 is arranged with upper bearing (metal) 13.
The instrument face amount of orientation gamma inserting tube can measure with its built-in acceleration of gravity instrumentation by in orientation gamma inserting tube the acceleration of gravity meter being set, and also can come from the directed inserting tube of steering tool.
The workflow of above-described embodiment two described orientation gamma inserting tubes is as follows:
Orientation gamma inserting tube applicable working condition creeps into for sliding, and need not when slip is crept into that any operation is continuable measures.When slip was crept into, the instrument face amount of orientation gamma inserting tube can measure with its built-in acceleration of gravity instrumentation by in orientation gamma inserting tube the acceleration of gravity meter being set, and also can come from the directed inserting tube of steering tool.At this moment, the motor high speed rotating, after reducer slows down, driving radome (or radome is with gamma detector) slowly rotates, the power shaft of angular transducer also rotates thereupon simultaneously, each road electric power and signal transmit by the conducting slip ring at two ends, at this moment can read simultaneously gamma-spectrometry value and angle measurement.Inserting tube instrument face amount, gamma-spectrometry value, angle measurement are sent to control circuit board and calculate, can obtain the orientation gamma-spectrometry value that distributes by the sector.
Although content of the present invention has been 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 modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. orientation gamma inserting tube, this inserting tube comprise gamma detector (26) and are set in the outer shell (21) of described gamma detector (26);
It is characterized in that this inserting tube also comprises:
Radome (25), it is set in the position of described gamma detector (26), is used for blocking gamma detector (26) part gamma rays, realizes that gamma detector (26) has direction ground to carry out gamma-spectrometry;
Reducer (23), it connects described radome (25) by rotating shaft;
Motor (22), it connects described reducer (23) by rotating shaft, and the rotation output of motor (22) is through described reducer (23) deceleration rear drive radome (25) rotation centered by gamma detector (26) is axial;
Angular transducer (24), its power shaft connect described radome (25), detect the relative rotation angle of radome (25) and shell (21).
2. orientation as claimed in claim 1 gamma inserting tube, it is characterized in that, described radome (25) adopts arc, and be arranged on a side of described gamma detector (26), block gamma detector (26) part gamma rays, realize that gamma detector (26) has direction ground to carry out gamma-spectrometry.
3. orientation as claimed in claim 1 gamma inserting tube is characterized in that, described radome adopts tubular construction, is set in outside the described gamma detector; This radome is provided with window, and gamma detector sees through this window and penetrates gamma rays, realizes that gamma detector has direction ground to carry out gamma-spectrometry.
4. orientation as claimed in claim 1 gamma inserting tube is characterized in that described shell (21) comprises the resistance to compression cylinder.
5. orientation as claimed in claim 1 gamma inserting tube is characterized in that described gamma detector (26) is made as with described shell (21) and is fixedly connected with, and described radome (25) is driven by motor (22) and rotates with respect to gamma detector (26).
6. orientation as claimed in claim 1 gamma inserting tube, it is characterized in that, described gamma detector (26) is made as with described radome (25) and is fixedly connected with, and this gamma detector (26) is jointly driven by motor (22) with radome (25) and now rotates for described shell (21).
7. orientation as claimed in claim 1 gamma inserting tube is characterized in that, also is provided with the acceleration of gravity meter in the described orientation gamma inserting tube.
Priority Applications (1)
| 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 |
|---|---|---|---|
| CN201210541098.2A CN102979518B (en) | 2012-12-14 | 2012-12-14 | A kind of directional gamma probe |
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| Publication Number | Publication Date |
|---|---|
| CN102979518A true CN102979518A (en) | 2013-03-20 |
| CN102979518B CN102979518B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210541098.2A Active CN102979518B (en) | 2012-12-14 | 2012-12-14 | A kind of directional gamma probe |
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Cited By (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 |
| CN107110993A (en) * | 2015-02-19 | 2017-08-29 | 哈利伯顿能源服务公司 | Gamma detection sensor in rotary steerable 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 |
Cited By (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 |
| CN107110993A (en) * | 2015-02-19 | 2017-08-29 | 哈利伯顿能源服务公司 | Gamma detection sensor in rotary steerable 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 |
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| Publication number | Publication date |
|---|---|
| CN102979518B (en) | 2015-12-30 |
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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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