CN104215583A - Rock anisotropy measurement device and application method thereof - Google Patents
Rock anisotropy measurement device and application method thereof Download PDFInfo
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- CN104215583A CN104215583A CN201410479728.7A CN201410479728A CN104215583A CN 104215583 A CN104215583 A CN 104215583A CN 201410479728 A CN201410479728 A CN 201410479728A CN 104215583 A CN104215583 A CN 104215583A
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Abstract
The invention provides a rock anisotropy measurement device and an application method of the rock anisotropy measurement device. The device comprises a shell, a stable laser transmitter, a sample groove, a power supply and a voltage tester, wherein the stable laser transmitter is arranged in the shell and is used for transmitting a laser signal irradiated on a rock sample; the sample groove is formed in the shell, is formed on a light path center of the stable laser transmitter and is used for containing the rock sample; the power supply is arranged in the shell and is used for providing current to the rock sample arranged on the sample groove; the voltage tester is used for testing voltage of an electric signal generated by irradiating the rock sample by laser and displaying voltage change of the electric signal generated by irradiating the rock sample by the laser; and the voltage change is used for analyzing the anisotropy property of the rock sample. By adopting the device provided by the embodiment of the invention, the measurement on the anisotropy of the rock is simple to operate and the rock sample is not damaged.
Description
Technical field
The present invention relates to rock prospecting technique field, particularly a kind of rock anisotropy measurement mechanism and using method thereof.
Background technology
Rock anisotropy refers to the characteristic that the physical performance of natural rock mass is different and different with dimensional orientation, is in particular in the aspects such as the intensity of rock and deformation behavior.Under natural rock concrete conditions in the establishment of a specific crime, making rock mass have anisotropic fundamental cause is because ubiquity bedding, schistosity, interlayer and directed crack (tomography) system in rock.
At present, the ripple ratio characteristic and resistivity anisotropy etc. of study of rocks anisotropy mainly study of rocks P-wave And S, but rock category governs the anisotropic development degree of ripple ratio, and the anisotropic research of rock resistivity in the past uses multi electrode combination method, more complicated, does not also have the simple and effective method can measuring rock anisotropy characteristic at present.
Summary of the invention
Embodiments provide a kind of rock anisotropy measurement mechanism, to realize the simple nondestructive measurement to rock anisotropy characteristic, this device comprises:
Housing;
Steady laser transmitter, is positioned at described housing, for launching the laser signal be radiated on rock sample;
Sample cell, is positioned on described housing, and is positioned at the light path center of described steady laser transmitter, for placing rock sample;
Power supply, is positioned at described housing, for providing electric current for the rock sample be placed on described sample cell;
Voltage tester, for testing the voltage of the electric signal that described rock sample produces under laser irradiates, the change in voltage of the electric signal produced under laser irradiates by described rock sample shows, wherein, described change in voltage is used for analyzing the anisotropic properties of described rock sample.
In one embodiment, described sample cell is can angled draw-in groove.
In one embodiment, described sample cell is provided with electrode, described electrode is connected with voltage tester by wire, and described electrode contacts with the rock sample on sample cell.
In one embodiment, described power supply is constant current source.
In one embodiment, also processor is provided with in described housing, be connected with described voltage tester, the change in voltage situation of the electric signal shown on voltage tester described in real time record, and analyze according to the anisotropic properties of change in voltage situation to described rock sample of record.
In one embodiment, described steady laser transmitter is 532nm wavelength laser transmitter.
In one embodiment, described rock anisotropy measurement mechanism is hand-held.
The embodiment of the present invention additionally provides the using method of above-mentioned rock anisotropy measurement mechanism, comprising:
Rock sample is placed on sample cell, adjusts the light path center that described rock sample is positioned at steady laser transmitter;
Open described steady laser transmitter, power supply and voltage tester;
Record the change in voltage situation that described voltage tester shows;
Adjust the angle of described rock sample, when being recorded in different angles, the change in voltage situation that described voltage tester shows;
Change in voltage situation corresponding when being positioned at different angles according to the described rock sample obtained, analyzes the anisotropic character of described rock sample.
In embodiments of the present invention, provide a kind of rock anisotropy measurement mechanism, because be provided with steady laser transmitter and voltage tester in this device, thus the change in voltage situation of rock sample under laser irradiates can be got, just can realize the measurement to rock anisotropy characteristic according to change in voltage situation.The anisotropy measuring rock by the way operates fairly simple, can not damage rock sample, and because being all encapsulated in a housing by these parts, is therefore also easy to carry.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the rock anisotropy measurement mechanism of the embodiment of the present invention;
Fig. 2 is the using method process flow diagram of the rock anisotropy measurement mechanism of the embodiment of the present invention;
Fig. 3 is the rock sample schematic diagram of the embodiment of the present invention;
Fig. 4 is the rock distribution of electrodes of the embodiment of the present invention and concrete test case schematic diagram;
Fig. 5 is that the rock photoelectric characteristic of the embodiment of the present invention characterizes anisotropy schematic diagram.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, exemplary embodiment of the present invention and illustrating for explaining the present invention, but not as a limitation of the invention.
Inventor considers, can pass through detecting technique, utilize steady laser to excite to obtain the photosignal of rock, by the analysis of the photosignal to rock, can obtain the anisotropic properties of rock.
Based on above-mentioned thought, in this example, provide a kind of rock anisotropy measurement mechanism, this device realizes the measurement to rock photoelectric characteristic parameter by photosignal, thus based on optical means, characterize the anisotropic properties of rock, main feature is: detection is simple, measurement cost is low, and to sample rock not damaged, stronger to adaptive capacity to environment, respond sensitive, contribute to realizing the real-time detection to rock sample, be easy to carry.
As shown in Figure 1, this rock anisotropy measurement mechanism comprises:
Housing 101;
Steady laser transmitter 102, is positioned at housing 101, for launching the laser signal be radiated on rock sample;
Sample cell 103, is arranged on housing 101, and is positioned at the light path center of steady laser transmitter 102, for placing rock sample;
Power supply 104, is positioned at housing 101, for providing electric current for the rock sample be placed on sample cell;
Voltage tester 105, for testing the voltage of the electric signal that described rock sample produces under laser irradiates, the change in voltage of the electric signal produced under laser irradiates by described rock sample shows, wherein, described change in voltage is used for analyzing the anisotropic properties of described rock sample.
In the above-described embodiments, provide a kind of rock anisotropy measurement mechanism, because be provided with steady laser transmitter, power supply and voltage tester in this device, thus the change in voltage situation of rock sample under laser irradiates can be got, just can realize the measurement to rock anisotropy characteristic according to change in voltage situation.The anisotropy measuring rock by the way operates fairly simple, and can not damage rock sample, further, because being all encapsulated in a housing by these parts, is therefore also easy to carry.
Above-mentioned steady laser transmitter 102 can select 532nm wavelength laser transmitter, because this generating laser hot spot is less, and power can suitably regulate, but it should be noted that, above-mentioned 532nm wavelength laser transmitter is only a kind of preferred embodiment, the generating laser of other wavelength all right, such as 808nm wavelength laser transmitter, 1064nm wavelength laser transmitter etc.
Concrete, because need to measure the change in voltage situation of rock sample when different angles, sample cell 103 can be set to can angled draw-in groove, like this when needing the change in voltage measuring rock sample different angles, change angle by means of only draw-in groove, operate more convenient.
As long as above-mentioned power supply can for rock sample provide stable electric current device can, in this no limit.
Because be provided with power supply and voltage tester in said apparatus, this just makes rock sample need to be connected with voltage tester 105 with power supply 104 simultaneously, also just need on sample cell, arrange 4 electrodes, two for being connected with voltage tester, two for being connected with power supply, in order to realize contacting better and measure, electrode and the rock sample on sample cell need directly to contact.
In order to realize the more efficiently record of data and analyzing and processing, can external corresponding computer software, or increase a processor, realize the real time record of data, contrast and preservation, such as, can arrange a processor in housing, this processor is connected with voltage tester, the change in voltage situation of the electric signal shown on real time record voltage tester, and analyze according to the anisotropic properties of change in voltage situation to described rock sample of record.Consider and rock anisotropy measurement mechanism is set to portable, preferably can increase a small-sized processor in a device, this processor can directly process data, also can increase wireless module in this processor, data is sent to outside device and process.
Further, this device can be set to hand-held, so just can carry with, use more convenient, mobility is stronger, during specific implementation, this rock anisotropy characteristic measuring device can manufacture according to following size: long 500mm ~ 800mm, wide 300mm ~ 500mm, high 150mm ~ 300mm, thus realize portable demand, the measurement of rock anisotropy characteristic can be carried out at any time.
In this example, additionally provide a kind of using method of rock anisotropy characteristic measuring device, as shown in Figure 2, comprising:
Step 201: be placed in by rock sample on sample cell, adjusts the light path center that described rock sample is positioned at steady laser transmitter;
Step 202: open described steady laser transmitter, power supply and voltage tester;
Step 203: record the change in voltage situation that described voltage tester shows;
Step 204: the angle adjusting described rock sample, when being recorded in different angles, the change in voltage situation that described voltage tester shows;
Step 205: change in voltage situation corresponding when being positioned at different angles according to the described rock sample obtained, analyzes the anisotropic character of described rock sample.
Be described with the anisotropic properties measurement mechanism of a specific embodiment to above-mentioned rock below, but it should be noted that this specific embodiment is only to better the present invention is described, do not form inappropriate limitation of the present invention.
In this example, propose a kind of apparatus and method being measured rock anisotropy characteristic parameters by steady laser, utilize the interaction of steady laser and rock, obtain the photoelectric characteristic of rock, and then analyze rock anisotropy characteristic, this apparatus structure is simple, be easy to operation and be easy to carry.
This system comprises: steady laser transmitter, constant current source, voltage tester, can carry out the sample cell of angular setting, and the wire detected for photosignal and electrode, and the using method of this device comprises:
Step 1: be positioned in sample cell by rock sample to be measured, adjustment sample to having good contact with electrode, and is connected with voltage tester with constant current source by sample cell.
Step 2: open steady laser transmitter, steady laser is made to be radiated on sample, photoelectric effect is produced in rock, the situation of change of corresponding photosignal can be detected by the voltage tester be connected to sample, further, by rotating sample angle, to obtain the change of photoelectric signal situation of rock sample in different angles, the anisotropic properties of rock sample can be characterized to the situation of change analysis of photosignal during different angles.
When concrete enforcement, by increasing the irradiated area of beam expanding lens adjustment laser, and then photosignal can be modulated, the real time record of data, contrast and preservation can also be realized by external corresponding computer software.
Concrete, as shown in Figure 3, wherein horizontal stripe represents bed plane direction to the rock sample size of placing in anisotropy detector.
The distribution of rock sample top electrode and concrete test case as shown in Figure 4, wherein, position 1,2 lines are bed plane direction, 4 solid dot are on line expressed as 4 point electrodes in sample cell, are connected with power supply (such as constant current source) outermost layer 2 between 4 point electrodes equidistantly, 2, centre for carrying out voltage measurement, thus can obtain the photoconductive situation of change of rock sample.Position 3,4 lines are and bed plane angle 45 ° of directions, position 5, and 6 lines are and bed plane angle 90 ° of directions, and wherein 4 hollow dots are 4 point electrodes, and concrete test process just can be measured according to the method described above.
Be rock sample as shown in Figure 5 in the photoconductive direction of measurement and sample rock bedding angle be 0 °, 45 °, result when 90 °, in figure, photoconductive unit is 10
-9siemens's (Siemens is the inverse of unit of resistance ohm).Can find that the angle of angle is different by Fig. 5, measure the photoconduction drawn also different, and have obvious regularity, this just shows that photoconduction can characterize the anisotropic character of rock preferably.
Multiple test position can be selected when specific implementation, such as: choose rock angle be 0 °, 10 °, 20 °, 30 ° until 90 °, measure once at interval of 10 °, but it should be noted that above-mentioned to be spaced apart example with 10 ° be only to better the present invention is described, other angle can also be measured, select other interval, the application does not limit this.
Characterize rock anisotropy by photoelectric characteristic mentioned in this example, implement fairly simple, and device is easy to carry, measurement cost is low, to sample rock not damaged, comparatively strong to adaptive capacity to environment, in oil-gas exploration and exploitation, there is directive significance and actual application value.
From above description, can find out, the embodiment of the present invention achieves following technique effect: provide a kind of rock anisotropy measurement mechanism, because be provided with steady laser transmitter and voltage tester in this device, thus the change in voltage situation of rock sample under laser irradiates can be got, just can realize the measurement to rock anisotropy characteristic according to change in voltage situation.The anisotropy measuring rock by the way operates fairly simple, and can not damage rock sample, further, because being all encapsulated in a housing by these parts, is therefore also easy to carry.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned embodiment of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the embodiment of the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a rock anisotropy measurement mechanism, is characterized in that, comprising:
Housing;
Steady laser transmitter, is positioned at described housing, for launching the laser signal be radiated on rock sample;
Sample cell, is positioned on described housing, and is positioned at the light path center of described steady laser transmitter, for placing rock sample;
Power supply, is positioned at described housing, for providing electric current for the rock sample be placed on described sample cell;
Voltage tester, for testing the voltage of the electric signal that described rock sample produces under laser irradiates, the change in voltage of the electric signal produced under laser irradiates by described rock sample shows, wherein, described change in voltage is used for analyzing the anisotropic properties of described rock sample.
2. device as claimed in claim 1, it is characterized in that, described sample cell is can angled draw-in groove.
3. device as claimed in claim 1, it is characterized in that, described sample cell is provided with electrode, and described electrode is connected with voltage tester by wire, and described electrode contacts with the rock sample on sample cell.
4. device as claimed in claim 1, it is characterized in that, described power supply is constant current source.
5. device as claimed in claim 1, it is characterized in that, also processor is provided with in described housing, be connected with described voltage tester, the change in voltage situation of the electric signal shown on voltage tester described in real time record, and analyze according to the anisotropic properties of change in voltage situation to described rock sample of record.
6. device as claimed in claim 1, it is characterized in that, described steady laser transmitter is 532nm wavelength laser transmitter.
7. the device according to any one of claim 1 to 6, is characterized in that, described rock anisotropy measurement mechanism is hand-held.
8. a using method for the rock anisotropy measurement mechanism according to any one of claim 1 to 7, is characterized in that, comprising:
Rock sample is placed on sample cell, adjusts described rock sample to the light path center being positioned at steady laser transmitter;
Open described steady laser transmitter, power supply and voltage tester;
Record the change in voltage situation that described voltage tester shows;
Adjust the angle of described rock sample, when being recorded in different angles, the change in voltage situation that described voltage tester shows;
Change in voltage situation corresponding when being positioned at different angles according to the described rock sample obtained, analyzes the anisotropic character of described rock sample.
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