CN104459825A - Test system for down hole detector sensor - Google Patents
Test system for down hole detector sensor Download PDFInfo
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- CN104459825A CN104459825A CN201310432703.7A CN201310432703A CN104459825A CN 104459825 A CN104459825 A CN 104459825A CN 201310432703 A CN201310432703 A CN 201310432703A CN 104459825 A CN104459825 A CN 104459825A
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Abstract
The invention provides a test system for a down hole detector sensor and belongs to the field of geophysical exploration instrument manufacturing and equipment maintenance. The system comprises a low and medium frequency standard vibration table component, a temperature control box and a data collection card. The temperature control box is used for simulating temperatures under different hole depths, the bottom of the temperature control box is fixedly installed on the low and medium frequency standard vibration table component, and the low and medium frequency standard vibration table component can conduct perpendicular vibration. In the test process, a standard sensor and a sensor to be tested are fixedly installed in the temperature control box, and the data collecting card is connected with the standard sensor and the sensor to be tested. By means of the test system for the down hole detector sensor, different high-temperature environments under different hole depths can be simulated, heating tests are conducted on the sensor to be tested at the set temperature, and the test environment is closer to the actual working environment.
Description
Technical field
The invention belongs to geophysical instrument manufacture and plant maintenance field, be specifically related to a kind of test macro of well seismometer sensor, utilize hot conditions test under medium and low frequency shaking table and temperature-controlled cabinet simulation well in room conditions, detect the system of seismoreceiver performance index.
Background technology
In well, seismic prospecting is a kind of common method of seismic prospecting, is positioned in prospecting borehole by wave detector exactly with the maximum differential of surface seismic exploration.The wave detector used in well is well seismometer, normally an areal receiver-array system.As shown in Figure 1, during use, well seismometer is connected to the one end of the cable controlled by well logging cable car, controls to be broadcasted projected depth by winch; Starting focus by being placed on the surface instrumentation be also connected with cable in well logging cable car by synchronous system of source, exciting; Make seismic event to underground propagation, run into stratum successively to be received by the multi-level downhole wave detector device in well with the different modes such as direct wave and reflection wave, carry out data acquisition, and data are uploaded to surface instrumentation record by cable, as shown in earthquake-capturing schematic diagram in Fig. 1 well.By repeatedly repeated acquisition and the degree of depth constantly changing well seismometer, thus obtain the data of full well section, reach the object of acquiring seismic data in well.
Well seismometer sensor is one of core component of well seismometer.Well seismometer is changed by sensor, A/D usually, gather control, transmit the parts such as control, power module forms, and signal wiring as shown in Figure 2.First well seismometer sensor receives ground vibration, and its performance will directly have influence on the quality of collection data; It has the types such as moving-coil type, moving-magnetic type, piezoelectric transducer.
Shaping well seismometer has been manufactured for one, because its volume is larger and heavier, for the WR-MSR logging system of import, the length of its a joint wave detector: be about 1500 millimeters, diameter: 65 millimeters, weight: reach 25 kilograms.Can only transmit whole wave detector, the detection of control aspect, the test to wave detector sensor cannot be accomplished.
Existing domestic industry standard, although wherein SY/T6541-2003 proposes requirement to instrument exceeding the detection under ambient environment, and wave detector adopts in the standard of SY/T5046-2005 and how to fail to tell in detail to the method for testing of well geophone.
The sensor that well seismometer uses is divided into two kinds of domestic and import, and in use, the parameter that can only provide according to producer is selected, temperature parameter particularly in subsurface environment, can only according to producer's parameter choose, user cannot know the performance of this sensor when actual temperature.
The domestic detection to well seismometer sensor at present, the signal mainly produced by bumper is screened tested wave detector sensor, and operating environment requirements is reached to the detection of the situation of 100 degree even higher, tested sensor is placed in other baking oven (baking box) temperature to be set to uniform temperature, be heated after certain hour, take out again, be placed into shaking table and get on detection.So just can not reflect the response under heating status of sensor completely, also just can not determine the working condition of the sensor when true temperature.
Summary of the invention
The object of the invention is to solve the difficult problem existed in above-mentioned prior art, a kind of test macro of well seismometer sensor is provided, can simulate completely seismic prospecting particularly cbm exploration time downhole temperature state under, the duty of well seismometer sensor, complete the test to well seismometer sensor and screening operation, the sensor that manufacture and maintenance for well seismometer provide better, are more suitable for.
The present invention is achieved by the following technical solutions:
A test macro for well seismometer sensor, comprises medium and low frequency standard vibration machine parts, temp. controlling box and data collecting card;
Described temp. controlling box is for realizing the simulation to the temperature under different well depth;
The bottom of described temp. controlling box is fixedly mounted on described medium and low frequency standard vibration machine parts;
Described medium and low frequency standard vibration machine parts can carry out Vertical dimension vibration;
During test, at described temp. controlling box internal fixtion, standard transducer and sensor to be measured are installed;
Described data collecting card is connected with described standard transducer and sensor to be measured respectively.
Described temp. controlling box comprises closed inner chamber body, the hollow cylinder that described closed inner chamber body comprises upper bottom surface, bottom surface and is positioned between the two, and three surrounds a closed inner chamber;
Electric heater, temperature-detecting device and temperature control equipment are installed in described closed inner chamber;
Described electric heater is used for heating whole temp. controlling box;
Described temperature-detecting device for detecting the temperature of whole closed inner chamber, and by the temperature feedback that detects to temperature control equipment;
The temperature that described temperature control equipment comes according to the temperature of setting and temperature-detecting device feedback adjusts electric heater.
The high temperature of described temp. controlling box ability more than 150 degree, the volume of described closed inner chamber is greater than 700 cubic centimetres, and is greater than the volume of the ordinary sensors of 3 times.
Described electric heater adopts ceramic heater.
Described medium and low frequency standard vibration machine parts for generation of standard sine vibration signal, and produce the mensuration of micro-acceleration realization to the resolution of sensor to be measured;
Described medium and low frequency standard vibration machine parts involving vibrations platform and connect baric systerm on a vibration table and Vertical dimension excitation system; The bottom surface of described temp. controlling box is fixedly mounted on described shaking table;
Described Vertical dimension excitation system comprises impedance transformer, power amplifier and signal generator;
Described signal generator output frequency signal, this frequency signal is amplified into impedance transformer through power amplifier, and the impedance amplitude of described impedance transformer to the frequency signal after amplification adjusts, and the frequency signal transmission after adjustment gives described shaking table.
Described baric systerm comprises air compressor, after first the pressure gas that described air compressor exports is filtered by air strainer, then by pressure regulator valve, exports constant air pressure to shaking table, shaking table is steadily floated.
During work, after shaking table receives the stable source of the gas that baric systerm provides, shaking table can float stably, can carry out the motion of Vertical dimension in fixing slideway, now receive the frequency signal after adjustment, produce the vertical vibration meeting this frequency.Micro-acceleration represents that the oscillation intensity of shaking table is very small and weak.
The test macro of described well seismometer sensor comprises computing machine further, the data analysis that described computing machine collects data collecting card and display.
Described data collecting card adopts 24 A/D capture cards, and described 24 A/D capture cards are connected with sensor to be measured with the standard transducer being positioned at temp. controlling box respectively by concentric cable.
Compared with prior art, the invention has the beneficial effects as follows:
1, (by controlling the temperature of temp. controlling box under native system can simulate different well depth, simulate the temperature environment under different well depth) different hot environments, and at the temperature of setting, sensor to be heated detection, more close to the working environment of reality.
2, by monitoring display figure, directly perceived, the clear and definite duty demonstrating sensor.
3, the frequency range of systems axiol-ogy can reach 1-1000Hz (being ensured by the structure of shaking table), adapts to the demand of seismic prospecting completely.
Accompanying drawing explanation
Fig. 1 is earthquake-capturing schematic diagram in well.
Fig. 2 is well seismometer hardware schematic diagram.
Fig. 3 is well seismometer sensor testing system schematic diagram of the present invention.
Fig. 4 is medium and low frequency standard vibration machine system hardware schematic diagram.
Fig. 5 is temp. controlling box hardware schematic diagram.
Fig. 6 is the testing process of well seismometer sensor testing system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Wave detector is herein seismoreceiver, is a kind of device ground vibration being changed into electric signal.In earthquake-capturing, wave detector and seismograph composition acquisition system.In collection activity.Usual wave detector embedding is in ground or be suspended in detecting shaft, the seismic event that artificial earthquake produces is converted to electric signal and by cable, electric signal is sent into seismograph, is treated to seismologic record by analysis.Wave detector is divided into analog detector and digital geophone.
Sensor a kind ofly can experience measured information, and can by Detection Information, the device that the information that be for conversion into electric signal or other desired forms according to certain rules exports.Due to the small volume of wave detector in the physical prospecting of ground, usually surface geophone is also called sensor.And in well in physical prospecting, a well geophone contains the parts such as data transmission, Mechanical course, and the parts foremost that sensor transmits as well seismometer data, so well seismometer and well seismometer sensor, should be specific two concepts.
One, the composition of well seismometer sensor testing system:
As shown in Figure 3, well seismometer sensor testing system of the present invention is partly made up of temp. controlling box 2,24 A/D capture cards 1, computer system and the power supplys etc. of medium and low frequency standard vibration machine parts 5, placement standard transducer 3 and tested sensor 4.
Each several part major function is:
1, medium and low frequency standard vibration machine parts 5: encourage tested sensor for generation of standard sine vibration signal, and then complete the close adjustment to tested sensor in conjunction with test macro.Employing Vertical dimension encourages, and these parts mainly comprise Vertical dimension shaking table, low-noise accurate power amplifier, impedance transformer etc.As shown in Figure 4, its hardware composition has, the parts such as shaking table, power amplifier, impedance transformer, baric systerm (comprising route controller and air compressor system), power supply, and the air pressure that baric systerm provides is for vibration.Shaking table can produce the mensuration of micro-acceleration realization to sensor resolution, and shaking table exports effective frequency range: 1Hz-1000Hz; To shake a grade scope: 10 μ g-10g.
2, temp. controlling box 2: simulation petroleum prospecting downhole temperature environment, makes wave detector sensor truly accept high temperature experiment.As shown in Figure 5, it comprises the parts compositions such as closed inner chamber body, electric heater, temperature-detecting device, temperature control equipment.Closed inner chamber body adopts upper bottom surface to add the structure of intermediate cylinder (these cylinder needs are high temperature resistant and exceed the temperature of requirement detection), and bottom surface with shaking table plane with adhesion or by the method that screw is connected, can reach firm connection; Intermediate cylinder (its shape can the side of being, circle, usual use right cylinder) in order to install, to fix electric heater, temperature-detecting device and temperature control equipment, and have certain space to ensure the position of putting and fixing of standard transducer and tested sensor; And access power supply and make its work.Make the space heating of its inside to the temperature of specifying by design temperature, the high temperature of the necessary ability 150 degree of temp. controlling box, and inner space volume >700 cubic centimetre, and be greater than the volume of the ordinary sensors of 3 times.During concrete use, firmly the wall of electric heater near closed inner chamber body is installed as far as possible, fix and space will be left after installation and can place standard transducer and tested sensor.When heating, homogeneous temperature in cylinder should be made.In most cases temp. controlling box adopts nontransparent material to be made, and also can with transparent material as quartz glass etc. does middle cylinder, but need level of processing and cost all higher.The temp. controlling box provided in Fig. 3 is the non-transparent material adopted.
3, data acquisition module: the PCI-4461 capture card adopting NI company.This card aly aims at vibration applications and the high-accuracy data acquisition module designed.NIPCI-4461 has the dynamic range of 118dB, and 24 bit resolutions are for there being the accurate measurement of the acceleration of very high dynamic range and other transducers; The highest sampling and renewal rate reach 204.8kS/s, and 2 road synchronously simulating inputs, 2 road synchronously simulatings export.Capture card is connected with sensor by concentric cable.
4, computing machine 6: be special desktop computer, main hardware configures: the multi-purpose computer of operation windows xp operating system that can be smooth.The machine is provided with: data acquisition module NIPCI-4661 card and drive software and sensor test software.Sensor test software specifies: if when carrying out 2 sensor contrasts, standard transducer is connected on NIPCI4461 first analog input channel; Sensor to be measured is connected on NIPCI4461 second analog input channel; To the selection analysis gathering the data received and can carry out the projects such as time domain waveform, frequency spectrum, power spectrum, frequency response, relevant, cross-spectrum and the linearity, and in the mode of window waveform display, each channel selecting is shown, display items display is time domain waveform, frequency spectrum, power spectrum etc.
5, standard transducer 3: usually should choose according to GB/T24240-2009 standard.Select in real work, quality, performance comparatively stability sensor, majority is all select the sensor of import as standard transducer as far as possible.After standard transducer is determined, according to the method that its shape adopts adhesion or screw to fix, be close-coupled on the base of temp. controlling box.
Two, the testing process of well seismometer sensor testing system
The testing process of present system as shown in Figure 6, comprising:
(1) checkout facility power supply; Check the connection status of each system module;
(2) standard transducer and wave detector sensor to be measured are all fixedly mounted on the bottom surface of temp. controlling box;
(3) output signal of sensor is connected to 24 A/D capture cards;
(4) according to test request, the probe temperature of temp. controlling box inner sensor is set by hand, confirms and power up, heat;
(5) open the baric systerm of medium and low frequency shaking table: air compressor powers up, opening gas circuit switch, regulate reduction valve: the atmospheric pressure value being set to response;
(6) start signal generator, arranges output frequency, adjusting signal amplitude;
(7) regulating power amplifier, impedance transformation amplitude, observes shaking table, makes it normally work;
(8) computer booting, starts windows system, runs sensor test software;
(9) according to figure, sensor qualitative analysis, to compare.
According to testing process, after completing the analysis of a parameter, then need to carry out change parameter experiment to tested sensor, just enter into corresponding step, carry out Operations Analyst according to flow process.
Three, the measure that measuring accuracy is taked is improved
1, the well heater in temp. controlling box 2, does not adopt the heating arrangement with fan, reduces external noise as far as possible, on the impact of sensor, recommends to adopt ceramic heater.
2, computing machine 6 adopts the cabinet of all steel, has the industrial computer of better anti-electromagnetic interference capability.
3, medium and low frequency shaking table, when opening baric systerm, must select air pressure level according to the requirement of test.Usually, when 0.2MPa, large-signal (being greater than 1G acceleration) is tested; (what shaking table produced is the vibration of Vertical dimension, passes to sensor for small-signal test (being less than 1G acceleration) during 0.05MPa; Here the oscillation intensity that acceleration refers to).
Well seismometer sensor testing system of the present invention is made up of medium and low frequency standard vibration machine system, the temperature control box placing the tested sensor of standard transducer, 24 A/D capture cards, computing machines.According to the figure of testing software display, to tested sensor, compare and qualitative analysis.Complete the test to well seismometer sensor and screening operation, the sensor that manufacture and maintenance for well seismometer provide better, are more suitable for.
Technique scheme is one embodiment of the present invention, for those skilled in the art, on the basis that the invention discloses application process and principle, be easy to make various types of improvement or distortion, and the method be not limited only to described by the above-mentioned embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (8)
1. a test macro for well seismometer sensor, is characterized in that: described test macro comprises medium and low frequency standard vibration machine parts, temp. controlling box and data collecting card;
Described temp. controlling box is for realizing the simulation to the temperature under different well depth;
The bottom of described temp. controlling box is fixedly mounted on described medium and low frequency standard vibration machine parts;
Described medium and low frequency standard vibration machine parts can carry out Vertical dimension vibration;
During test, at described temp. controlling box internal fixtion, standard transducer and sensor to be measured are installed;
Described data collecting card is connected with described standard transducer and sensor to be measured respectively.
2. the test macro of well seismometer sensor according to claim 1, it is characterized in that: described temp. controlling box comprises closed inner chamber body, the hollow cylinder that described closed inner chamber body comprises upper bottom surface, bottom surface and is positioned between the two, three surrounds a closed inner chamber;
Electric heater, temperature-detecting device and temperature control equipment are installed in described closed inner chamber;
Described electric heater is used for heating whole temp. controlling box;
Described temperature-detecting device for detecting the temperature of whole closed inner chamber, and by the temperature feedback that detects to temperature control equipment;
The temperature that described temperature control equipment comes according to the temperature of setting and temperature-detecting device feedback adjusts electric heater.
3. the test macro of well seismometer sensor according to claim 2, is characterized in that: the high temperature of described temp. controlling box ability more than 150 degree, and the volume of described closed inner chamber is greater than 700 cubic centimetres, and is greater than the volume of the ordinary sensors of 3 times.
4. the test macro of well seismometer sensor according to claim 3, is characterized in that: described electric heater adopts ceramic heater.
5. the test macro of well seismometer sensor according to claim 4, is characterized in that: described medium and low frequency standard vibration machine parts for generation of standard sine vibration signal, and produce the mensuration of micro-acceleration realization to the resolution of sensor to be measured;
Described medium and low frequency standard vibration machine parts involving vibrations platform and connect baric systerm on a vibration table and Vertical dimension excitation system; The bottom surface of described temp. controlling box is fixedly mounted on described shaking table;
Described Vertical dimension excitation system comprises impedance transformer, power amplifier and signal generator;
Described signal generator output frequency signal, this frequency signal is amplified into impedance transformer through power amplifier, and the impedance amplitude of described impedance transformer to the frequency signal after amplification adjusts, and the frequency signal transmission after adjustment gives described shaking table.
6. the test macro of well seismometer sensor according to claim 5, it is characterized in that: described baric systerm comprises air compressor, after first the pressure gas that described air compressor exports is filtered by air strainer, pass through pressure regulator valve again, export constant air pressure to shaking table, shaking table is steadily floated.
7. according to the test macro of the arbitrary described well seismometer sensor of claim 1 to 6, it is characterized in that: the test macro of described well seismometer sensor comprises computing machine further, the data analysis that described computing machine collects data collecting card and display.
8. the test macro of well seismometer sensor according to claim 7, it is characterized in that: described data collecting card adopts 24 A/D capture cards, described 24 A/D capture cards are connected with sensor to be measured with the standard transducer being positioned at temp. controlling box respectively by concentric cable.
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Cited By (7)
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| CN105606207A (en) * | 2016-01-29 | 2016-05-25 | 湖南省计量检测研究院 | Calibration apparatus and calibration method applied to vibration sensor |
| CN106989816A (en) * | 2017-06-02 | 2017-07-28 | 中国航发南方工业有限公司 | Turbo oar engine vibration-measuring sensor is calibrated and measurement apparatus |
| CN109062176A (en) * | 2018-06-26 | 2018-12-21 | 昆山睿力得软件技术有限公司 | A kind of temperature controlling box Auto-Test System and method |
| CN110007370A (en) * | 2019-04-13 | 2019-07-12 | 胜利油田新胜石油物探技术服务有限责任公司 | A kind of general Seismic Detector system and its control method |
| CN111505735A (en) * | 2020-04-22 | 2020-08-07 | 北京港震科技股份有限公司 | Parameter measurement method, device and system of seismic observation instrument |
| CN113250946A (en) * | 2021-05-10 | 2021-08-13 | 广东葆德科技有限公司 | Detection system and detection method of sensor for air compressor |
| CN113917289A (en) * | 2021-12-14 | 2022-01-11 | 中海油田服务股份有限公司 | Solid cable testing device and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606207A (en) * | 2016-01-29 | 2016-05-25 | 湖南省计量检测研究院 | Calibration apparatus and calibration method applied to vibration sensor |
| CN106989816A (en) * | 2017-06-02 | 2017-07-28 | 中国航发南方工业有限公司 | Turbo oar engine vibration-measuring sensor is calibrated and measurement apparatus |
| CN109062176A (en) * | 2018-06-26 | 2018-12-21 | 昆山睿力得软件技术有限公司 | A kind of temperature controlling box Auto-Test System and method |
| CN110007370A (en) * | 2019-04-13 | 2019-07-12 | 胜利油田新胜石油物探技术服务有限责任公司 | A kind of general Seismic Detector system and its control method |
| CN111505735A (en) * | 2020-04-22 | 2020-08-07 | 北京港震科技股份有限公司 | Parameter measurement method, device and system of seismic observation instrument |
| CN113250946A (en) * | 2021-05-10 | 2021-08-13 | 广东葆德科技有限公司 | Detection system and detection method of sensor for air compressor |
| CN113917289A (en) * | 2021-12-14 | 2022-01-11 | 中海油田服务股份有限公司 | Solid cable testing device and method |
| CN113917289B (en) * | 2021-12-14 | 2022-02-25 | 中海油田服务股份有限公司 | Solid cable testing device and method |
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