CN202954811U - Direction gamma probe - Google Patents
Direction gamma probe Download PDFInfo
- Publication number
- CN202954811U CN202954811U CN 201220690543 CN201220690543U CN202954811U CN 202954811 U CN202954811 U CN 202954811U CN 201220690543 CN201220690543 CN 201220690543 CN 201220690543 U CN201220690543 U CN 201220690543U CN 202954811 U CN202954811 U CN 202954811U
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- gamma
- radome
- detector
- gamma detector
- inserting tube
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Abstract
The utility model provides a direction gamma probe. The probe comprises a gamma detector and a housing sleeved outside the gamma detector, wherein the probe also comprises a shielding cover, a speed reducer, a motor, and an angle sensor, wherein the shielding cover is sleeved at the position of the gamma detector for baffling a part of gamma ray of the gamma detector, and carrying out gamma measurement by the gamma detector in a direction; the speed reducer is connected to the shielding cover through a rotating shaft; the motor is connected with the speed reducer through the rotating shaft; rotatable output of the motor drives the shielding cover to rotate around the axial direction of the gamma detector as a center after being decelerated by the speed reducer; and the input shaft of the angle sensor is connected with the shielding cover and detects the opposite rotation angle of the shielding cover and the housing. The shielding cover is arranged on the direction gamma probe for achieving gamma measurement by the gamma detector in the direction. The direction gamma probe is simple in structure, low in demand on machining accuracy, and convenient to operate at scene, can be configured in a common wireless borehole measuring instrument to provide a direction gamma measurement value, and has practicability and economical efficiency.
Description
Technical field
The utility model relates to a kind of sniffer for the oil exploration drilling engineering, is specifically related to a kind of orientation for stratum natural gamma-spectrometry gamma inserting tube.
Background technology
In Process of Oil Well Drilling, often need to utilize the GR intensity with boring the apparatus measures stratum, for determining formation lithology.
Widely applied overall gamma inserting tube in 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 sodium iodide crystal.It by statistical unit in the time from stratum all directions inject the gamma rays of sodium iodide crystal, calculate the overall gamma intensity on this stratum.
Yet inhomogeneous when lithology, while 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, by extra radome, makes each crystal can only receive a sector directions 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 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 on supply of electric power and communication, and the quantity of the sensor needed 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 manufactured orientation gamma inserting tube, 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 utility model, and also support with bearing at the radome two ends, and carry out electric power and communication with conducting slip ring.Different, it does not have motor to drive and angular transducer, and two crystal counters staggered relatively have been installed on radome, and an eccentric weight pendulum, utilizes the heavily gravity of pendulum to make two crystal counters all the time in upper and lower position.Yet conceivable, when vibration is slightly large, heavily put acutely swinging and even do not stop upset, 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 is only for static or vibrate 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 situation.But, in order to realize the measurement of a plurality of covering of the fans, it needs again the tool-face of planned rotation inserting tube to other, 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.
The utility model content
The utility model provides a kind of orientation gamma inserting tube, configurable in conventional wireless measuring instrument while drilling, is used for measuring the orientation gamma intensity on stratum, has practicality and economy.
For achieving the above object, the utility model provides a kind of orientation gamma inserting tube, and this inserting tube comprises gamma detector and is set in the outer shell of 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, 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 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 driven and rotated with respect to gamma detector by motor.
Above-mentioned gamma detector is made as with radome and is fixedly connected with, and this gamma detector and radome are jointly driven and now rotated for shell by motor.
Also be provided with the acceleration of gravity meter in above-mentioned orientation gamma inserting tube.
Orientation gamma inserting tube applicable working condition creeps into for sliding, and without any operation is continuable, is measured when slip is crept into.When slip is crept into, the instrument face amount of orientation gamma inserting tube can be by arranging the acceleration of gravity meter in orientation gamma inserting tube, and with it, built-in acceleration of gravity instrumentation measures, and also can come from the directed inserting tube of steering tool.Now, the motor high speed rotating, after reducer slows down, drive radome, or radome slowly rotates together with gamma detector, and 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, can be obtained the orientation gamma-spectrometry value distributed by sector.
The gamma inserting tube of a kind of orientation of the utility model gamma inserting tube and prior art is compared, and its advantage is, the utility model is provided with radome, realizes that gamma detector can be had direction ground to carry out gamma-spectrometry, has quite high practicality and economy;
The utility model 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 conventional wireless measuring instrument while drilling, be a kind of orientation gamma-spectrometry instrument of taking into account practicality and economy.
The accompanying drawing explanation
The structural representation of the embodiment mono-that Fig. 1 is a kind of orientation of the utility model gamma inserting tube;
The structural representation of the embodiment bis-that Fig. 2 is a kind of orientation of the utility model gamma inserting tube.
The specific embodiment
Below in conjunction with accompanying drawing, further illustrate specific embodiment of the utility model.
As shown in Figure 1, be the embodiment mono-of the utility model orientation 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 gamma detector 26, and above-mentioned gamma detector 26, radome 25, reducer 23, motor 22 and angular transducer 24 are protected to resistance to compression.
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 a side of gamma detector 26, 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.The external external power source of motor 22, high speed rotating after energising, the rotation of motor 22 is exported 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 rotate together.
If gamma detector 26 is made as with shell 21 and is fixedly connected with, radome 25 is driven with respect to gamma detector 26 rotations by motor 22, to realize gamma detector 26, can have direction ground to carry out gamma-spectrometry.
If gamma detector 26 is made as with radome 25 and is fixedly connected with, this gamma detector 26 is jointly driven now and is rotated for shell 21 by motor 22 with radome 25, to realize gamma detector 26, can have direction ground to carry out gamma-spectrometry.
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 be by arranging the acceleration of gravity meter in orientation gamma inserting tube, and with it, built-in acceleration of gravity instrumentation measures, and also can come from the directed inserting tube of steering tool.
The angle measurement that the gamma-spectrometry value that the described orientation of the utility model gamma inserting tube is measured by gamma detector 26, inserting tube instrument face amount and angular transducer 24 are surveyed, obtain orientation gamma-spectrometry value.
As shown in Figure 2, be the embodiment bis-of the utility model orientation 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 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 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 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 sees through this window and penetrates gamma rays, realizes that gamma detector 7 has direction ground to carry out gamma-spectrometry.
Motor 3, reducer 4, lower coupler 5 are fixed in lower fixed seat 2 successively by downward conducting slip ring 6 one ends of 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 5,5 of lower couplers by a 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, also be arranged with lower bearing 15 on driven shaft.Motor 3 external power supply rotational speed, its output shaft is connected to reducer 4, after reducer 4 slows down, the output shaft by reducer 4 is sent to lower coupler 5, and lower coupler 5 is by a driven shaft driven shield cover 14(or gamma detector 7 and radome 14) slowly rotate.
In same the present 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.
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, radome 14 is driven with respect to gamma detector 7 rotations by motor 3, to realize gamma detector 7, can have direction ground to carry out gamma-spectrometry.
If gamma detector 7 is made as with radome 14 and is fixedly connected with, this gamma detector 7 is jointly driven now and is rotated for resistance to compression cylinder 16 by motor 3 with radome 14, to realize gamma detector 7, can have direction ground to carry out gamma-spectrometry.
Be arranged with upper bearing (metal) 13 in the rotating shaft of angular transducer 12 and upper conducting slip ring 8.
The instrument face amount of orientation gamma inserting tube can be by arranging the acceleration of gravity meter in orientation gamma inserting tube, and with it, built-in acceleration of gravity instrumentation measures, and also can come from the directed inserting tube of steering tool.
The workflow of the described orientation of above-described embodiment two gamma inserting tube is as follows:
Orientation gamma inserting tube applicable working condition creeps into for sliding, and without any operation is continuable, is measured when slip is crept into.When slip is crept into, the instrument face amount of orientation gamma inserting tube can be by arranging the acceleration of gravity meter in orientation gamma inserting tube, and with it, built-in acceleration of gravity instrumentation measures, and also can come from the directed inserting tube of steering tool.Now, the motor high speed rotating, after reducer slows down, driving radome (or radome is together with gamma detector) slowly rotates, 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 are calculated, can obtain the orientation gamma-spectrometry value distributed by sector.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (7)
1. an orientation gamma inserting tube, this inserting tube comprises gamma detector (26) and is 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), 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 connects described radome (25), detects 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 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 and rotated with respect to gamma detector (26) by motor (22).
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 and now rotated for described shell (21) by motor (22) with radome (25).
7. orientation as claimed in claim 1 gamma inserting tube, is characterized in that, in described orientation gamma inserting tube, also is provided with the acceleration of gravity meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690543 CN202954811U (en) | 2012-12-14 | 2012-12-14 | Direction gamma probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690543 CN202954811U (en) | 2012-12-14 | 2012-12-14 | Direction gamma probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954811U true CN202954811U (en) | 2013-05-29 |
Family
ID=48460388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690543 Withdrawn - After Issue CN202954811U (en) | 2012-12-14 | 2012-12-14 | Direction gamma probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979518A (en) * | 2012-12-14 | 2013-03-20 | 上海神开石油化工装备股份有限公司 | Directional gamma probe |
-
2012
- 2012-12-14 CN CN 201220690543 patent/CN202954811U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979518A (en) * | 2012-12-14 | 2013-03-20 | 上海神开石油化工装备股份有限公司 | Directional gamma probe |
| CN102979518B (en) * | 2012-12-14 | 2015-12-30 | 上海神开石油化工装备股份有限公司 | A kind of directional gamma probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130529 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |