CN104199125A - Earthquake-electromagnetic data acquisition device and earthquake-electromagnetic data acquisition system - Google Patents
Earthquake-electromagnetic data acquisition device and earthquake-electromagnetic data acquisition system Download PDFInfo
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- CN104199125A CN104199125A CN201410437912.5A CN201410437912A CN104199125A CN 104199125 A CN104199125 A CN 104199125A CN 201410437912 A CN201410437912 A CN 201410437912A CN 104199125 A CN104199125 A CN 104199125A
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Abstract
The invention provides an earthquake-electromagnetic data acquisition device and an earthquake-electromagnetic data acquisition system. The earthquake-electromagnetic data acquisition device comprises multiple data acquisition channel and at least an electric dipole, wherein at least one of the multiple data acquisition channels is an electric data acquisition channel; the electric data acquisition channel comprises a first signal input end, a first electric channel RC circuit, a first amplifier, a first analogue-digital converter, a first data storage device and a first data output port, all of which are connected in sequence; the first signal input end is connected with one electric dipole; the first electric channel RC circuit has the frequency response range of DC-1000 Hertz ad the input impedance greater than or equal to 30 megohms. Through the earthquake-electromagnetic data acquisition device and the earthquake-electromagnetic data acquisition system, the earthquake data and electromagnetic data can be acquired exactly, data support is provided for the oil-gas detection of the target space, all-around research and identification of the object property are realized, and the accuracy and precision for complex object detection in the field of the unconventional oil-gas exploration fields such as oil and gas reservoir exploitation and shale gas are improved.
Description
Technical field
The invention relates to geophysical exploration technology, particularly, is about a kind of earthquake-electromagnetic data harvester and acquisition system.
Background technology
Electromagnetism is two kinds of exploration engineering methods the most similar in geophysical survey with earthquake, all there is depth measurement function, can both study from very shallow to very dark exploration targets, the principle of two kinds of method utilizations is similar again a larger difference, and one is that electromagnetic wave, one are elastic waves, therefore, both detectivities to buried target and precision form notable difference, for example: earthquake is running into after high-velocity bed, underlying formation is just difficult to identification, and electromagnetism rule is not affected by it completely; Earthquake is very sensitive to the reflection of physical property interface, and electromagnetism rule descends the body of lithology to reflect over the ground; In oil-gas exploration, most particularly, earthquake is not strong to profit recognition capability, and electromagnetism is very sensitive to profit difference.
As can be seen here, if electromagnetism can combine with earthquake together with exploration, the space distribution that not only can solve target area also can be identified the character of target, thereby in oil-gas exploration, identifies better trap locus and oily whether.But, the collection of field earthquake at present and electromagnetic data is separately carried out, such data acquisition modes has caused that the cost of earthquake and electromagnetic survey is high, efficiency is low, data aggregate work for the treatment of difficulty, has greatly hindered the propagation and employment of earthquake-electromagnetism joint exploration technology.
Summary of the invention
The fundamental purpose of the embodiment of the present invention is to provide a kind of earthquake-electromagnetic data harvester and acquisition system, the problems such as the cost of existing seismic acquisition technology is high, efficiency is low in order to solve, associating data processing work difficulty.
To achieve these goals, the embodiment of the present invention provides a kind of earthquake-electromagnetic data harvester, this earthquake-electromagnetic data harvester comprises: multiple data acquisition channels and at least one eelctric dipole, in multiple described data acquisition channels, at least one is electric data collecting passage, described electric data collecting passage comprises: the first signal input end connecting successively, the first electric road RC circuit, the first amplifier, the first analog-digital converter, the first data-carrier store and the first data-out port, described first signal input end connects the eelctric dipole described in, the frequency response range of the first described electric road RC circuit is DC-1000 hertz, input impedance is more than or equal to 30 megaohms.
In one embodiment, above-mentioned data acquisition channel also comprises: at least one magnetic data acquisition channel and at least one vertical magnetic are visited sensor, described magnetic data acquisition channel comprises: the secondary signal input end, a RC circuit, the second amplifier, the second analog-digital converter, the second data-carrier store and the second data-out port that connect successively, the vertical magnetic that described secondary signal input end connects described in one is visited sensor.
In one embodiment, above-mentioned data acquisition channel also comprises: at least one earthquake data acquisition passage and at least one seismoreceiver, described earthquake data acquisition passage comprises: the 3rd signal input part, the 2nd RC circuit, the 3rd amplifier, the 3rd analog-digital converter, the 3rd data-carrier store and the 3rd data-out port that connect successively, the 3rd described signal input part connects the seismoreceiver described in.
In one embodiment, described in each, between the first amplifier, the second amplifier and the 3rd amplifier, interconnect, described in each, between the first analog-digital converter collection, the second analog-digital converter and the 3rd analog-digital converter, interconnect, described in each, between the first data-carrier store, the second data-carrier store and the 3rd data-carrier store, interconnect, described in each, between the first data-out port, the second data-out port and the 3rd data-out port, interconnect.
In one embodiment, above-mentioned earthquake-electromagnetic data harvester also comprises: control chip, described control chip connects described the first amplifier, the first analog-digital converter, the first data-carrier store, the second amplifier, the second analog-digital converter, the second data-carrier store, the 3rd amplifier, the 3rd analog-digital converter, the 3rd data-carrier store and the 3rd data-out port by control bus, for according to the data acquisition of earthquake-electromagnetic data harvester described in the gps data control of sampling rate and gps antenna transmission.
In one embodiment, above-mentioned earthquake-electromagnetic data harvester also comprises: described gps antenna, described gps antenna is connected with described control chip, comprises the gps data of coordinate data and time data to described control chip transmission.
The embodiment of the present invention also provides a kind of earthquake-electromagnetic data acquisition system, this earthquake-electromagnetic data acquisition system comprises: at least one seismic data acquisition device, at least one electric power system, at least one wire controllable current source, and at least one above-mentioned earthquake-electromagnetic data harvester, wherein, described seismic data acquisition device comprises: multiple earthquake data acquisition passages and multiple seismoreceiver, described earthquake data acquisition passage comprises: the signal input part connecting successively, RC circuit, amplifier, analog-digital converter, data-carrier store and data-out port, described signal input part connects the seismoreceiver described in.Described seismic data acquisition device and described earthquake-electromagnetic data harvester be by a line or the setting that is arranged side by side, composition seismic grid; Described wire controllable current source is laid in the one or both sides of described seismic grid; Each described electric power system connects respectively the wire controllable current source described in.
In one embodiment, the excitation waveform of above-mentioned wire controllable current source is rectangle square wave, and the cycle is 0.05s-40s.
Beneficial effect of the present invention is, by the present invention, can effectively eliminate or suppress difference or error that Source effects produces, realize the omnibearing research of target, improve accuracy and precision in unconventional petroleum exploration domain image data such as complex target, Reservoir Development and shale gas.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1A and Figure 1B are according to the structural representation of earthquake-electromagnetic data harvester of the embodiment of the present invention;
Fig. 2 A to Fig. 2 D is according to the structural representation of earthquake-electromagnetic data acquisition system of the embodiment of the present invention;
Fig. 3 A and Fig. 3 B are according to the structural representation of the seismic data acquisition device of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of earthquake-electromagnetic data harvester and acquisition system.Below in conjunction with accompanying drawing, the present invention is described in detail.
The embodiment of the present invention provides a kind of earthquake-electromagnetic data harvester 100, and as shown in Figure 1A and Figure 1B, this earthquake-electromagnetic data harvester 100 comprises: multiple data acquisition channels 1 and eelctric dipole 2.
In above-mentioned multiple data acquisition channels 1, have a data acquisition channel 1 at least for electric data collecting passage 3, this electric data collecting passage 3 comprises: the signal input part 31 being linked in sequence successively, electric road RC circuit 32, amplifier 33, analog-digital converter 34, data-carrier store 35 and data-out port 36.Wherein, this signal input part 31 is connected with above-mentioned eelctric dipole 2, and in practical application, in the time connecting an eelctric dipole 2 on this signal input part 31, this eelctric dipole 2 is for gathering simple component controllable source electromagnetic data; In the time being connected with two eelctric dipoles 2 on this signal input part 31, this eelctric dipole 2 can be used for gathering orthogonal two component controllable source electromagnetic datas.In actual data acquisition, inventor finds through experiment repeatedly, and the data of lower input impedance collection belong to number of non-compliances certificate, can not meet the follow-up requirement that data are measured and analyzed.And Analysis of Electric Circuit Theory shows, whether measuring object mates and can affect measurement result with surveying instrument internal resistance, according to impedance matching principle, selects the size of suitable input impedance can realize the object of getting rid of the interference that gathers electromagnetic data.Therefore, in embodiments of the present invention, the frequency response range of Jiang electricity road RC circuit 32 is set to DC-1000 hertz, and input impedance is set to be more than or equal to 30 megaohms.
Wherein, the quantity of this eelctric dipole 2 is not defined as above-mentioned one or two, can need to eelctric dipole 2 is set to one or more according to actual measurement.
As shown in Figure 1A and Figure 1B, in above-mentioned multiple data acquisition channels 1, have a data acquisition channel 1 at least for magnetic data acquisition channel 4, and this magnetic data acquisition channel 4 is connected with a vertical magnetic spy sensor 5.This magnetic data acquisition channel 4 comprises: the signal input part 41, RC circuit 42, amplifier 43, analog-digital converter 44, data-carrier store 45 and the data-out port 46 that connect successively.Wherein, magnetic data acquisition channel 4 is to visit sensor 5 by this signal input part 41 with above-mentioned vertical magnetic to be connected, and this vertical magnetic is visited sensor 5 for gathering magnetic strength data.In practical application, in this data acquisition channel 1, can visit sensor 5 according to the one or more above-mentioned magnetic data acquisition channels 4 of need to arranging of data acquisition and vertical magnetic, the present invention is not as limit.
For another example shown in Figure 1A and Figure 1B, in above-mentioned data acquisition channel 1, have a data acquisition channel 1 at least for earthquake data acquisition passage 6, and this earthquake data acquisition passage 6 is connected with a seismoreceiver 7.This earthquake data acquisition passage 6 comprises: the signal input part 61, RC circuit 62, amplifier 63, analog-digital converter 64, data-carrier store 65 and the data-out port 66 that connect successively.Wherein, earthquake data acquisition passage 6 is to be connected with above-mentioned seismoreceiver 7 by this signal input part 61, and this seismoreceiver 7 is for acquiring seismic data.In practical application, in the time that the seismoreceiver 7 being connected with this signal input part 61 is a simple component wave detector, this seismoreceiver 7 is for gathering simple component geological data; When the seismoreceiver 7 being connected with this signal input part 61 is a three-component analog or digital wave detector, this seismoreceiver 7 is for gathering three-component seismic data.And, can be according to the one or more above-mentioned earthquake data acquisition passages 6 of need to arranging of data acquisition and seismoreceiver 7 in this data acquisition channel 1, the present invention is not as limit.
By earthquake-electromagnetic data harvester of the embodiment of the present invention, can accurately gather earthquake-electromagnetic data, in order to detect object space, whether oily provides Data support, improves accuracy and the precision complex target surveyed at the unconventional petroleum exploration domain such as Reservoir Development and shale gas.
When concrete enforcement, as shown in Figure 1A, between above-mentioned each amplifier 33, amplifier 43 and amplifier 63, interconnect, between each analog-digital converter 34, analog-digital converter 44 and analog-digital converter 64, interconnect, between each data-carrier store 35, data-carrier store 45 and data-carrier store 65, interconnect, between each data-out port 36, data-out port 46 and data-out port 66, interconnect.
In one embodiment, this earthquake-electromagnetic data harvester 100 also comprises: control chip 8 and gps antenna 9, and this gps antenna 9 is connected with control chip 8, and gps antenna 9 is to the gps data of control chip 8 transmission including coordinate data and time data.This control chip 8 connects above-mentioned amplifier 33, analog-digital converter 34, data-carrier store 35, data-out port 36, amplifier 43, analog-digital converter 44, data-carrier store 45, data-out port 46, amplifier 63, analog-digital converter 64, data-carrier store 65 and data-out port 66 by control bus, and control chip 8 is for the data acquisition of this earthquake-electromagnetic data harvester 100 of gps data control of transmitting according to sampling rate and gps antenna 9.
In sum, earthquake-electromagnetic data harvester of the embodiment of the present invention, effectively binding time and coordinate data, earthquake-electromagnetic data is accurately gathered, in order to detect object space, whether oily provides Data support, to realize, object space character is carried out to omnibearing research and identification, improve accuracy and the precision complex target surveyed at the unconventional petroleum exploration domain such as Reservoir Development and shale gas, and can reduce prospecting prime cost, improve data acquisition efficiency, simplify the work of associating data processing, the propagation and employment of earthquake-electromagnetism joint exploration technology of being more convenient for.
As shown in Fig. 2 A to Fig. 2 D, the embodiment of the present invention also provides a kind of earthquake-electromagnetic data acquisition system 200, and this earthquake-electromagnetic data acquisition system 200 comprises: seismic data acquisition device 11, electric power system 12, wire controllable current source 13 and earthquake-electromagnetic data harvester 100 as described above.
Wherein, as shown in Fig. 3 A and Fig. 3 B, above-mentioned seismic data acquisition device 11 comprises: earthquake data acquisition passage 111 and seismoreceiver 112, this earthquake data acquisition passage 111 comprises: the signal input part 113, RC circuit 114, amplifier 115, analog-digital converter 116, data-carrier store 117 and the data-out port 118 that connect successively.Wherein, earthquake data acquisition passage 111 is connected with above-mentioned seismoreceiver 112 by this signal input part 113.In practical application, in the time that the seismoreceiver 112 being connected with this signal input part 113 is a simple component wave detector, this seismoreceiver 112 is for gathering simple component geological data; When the seismoreceiver 112 being connected with this signal input part 113 is a three-component analog or digital wave detector, this seismoreceiver 112 is for gathering three-component seismic data.And, can be according to the one or more above-mentioned earthquake data acquisition passages 111 of need to arranging of data acquisition and seismoreceiver 112 in this seismic data acquisition device 11, the present invention is not as limit.
As shown in Figure 3A, in the time being provided with multiple earthquake data acquisition passages 111 and seismoreceiver 112 in above-mentioned seismic data acquisition device 11, between multiple amplifiers 115, interconnect, between multiple analog-digital converters 116, interconnect, between multiple data-carrier stores 117, interconnect, between multiple data-out ports 118, interconnect.
When concrete enforcement, as shown in Figure 3A, this seismic data acquisition device 11 also comprises: control chip 119 and gps antenna 120, and this gps antenna 120 is connected with control chip 119, and gps antenna 120 comprises the gps data of coordinate data and time data to control chip 119 transmission.This control chip 119 connects above-mentioned amplifier 115, analog-digital converter 116, data-carrier store 117 and data-out port 118 by control bus, and this control chip 119 is for the data acquisition of this seismic data acquisition device 11 of gps data control of transmitting according to sampling rate and gps antenna 120.
As shown in Fig. 2 A to Fig. 2 D, above-mentioned seismic data acquisition device 11 and earthquake-electromagnetic data harvester 100 are pressed with a line spread configuration near target distribution district (focus), or seismic data acquisition device 11 and earthquake-electromagnetic data harvester 100 are arranged side by side and are arranged near target distribution district (focus), thus composition seismic grid.And as shown in Figure 2 D, above-mentioned wire controllable current source 13 is laid in the one or both sides of this seismic grid.Each wire controllable current source 13 connects respectively an above-mentioned electric power system 12, electric power support is provided to wire controllable current source 13 by this electric power system 12.When concrete enforcement, the excitation waveform of above-mentioned wire controllable current source 13 is rectangle square wave, and the cycle is 0.05s-40s.It should be noted that, above-mentioned seismic data acquisition device 11 is not done unique restriction with the quantity of earthquake-electromagnetic data harvester 100, can one or more seismic data acquisition devices 11 and earthquake-electromagnetic data harvester 100 need to be set according to the data acquisition of realistic objective distributive province (focus).
By earthquake-electromagnetic data acquisition system of the embodiment of the present invention, can effectively distribute the distribution problem of oil gas object space, and can accurately gather geological data and electromagnetic data in oil and gas detection, in order to detect object space, whether oily provides effective Data support, thereby realize, object space character is carried out to omnibearing research and identification, improve in accuracy and the precision of unconventional petroleum exploration domain to target detection such as complex target, Reservoir Development and shale gas.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. earthquake-electromagnetic data harvester, is characterized in that, described earthquake-electromagnetic data harvester comprises: multiple data acquisition channels and at least one eelctric dipole, and in described multiple data acquisition channels, at least one is electric data collecting passage,
Described electric data collecting passage comprises: the first signal input end, the first electric road RC circuit, the first amplifier, the first analog-digital converter, the first data-carrier store and the first data-out port that connect successively, described first signal input end connects the eelctric dipole described in, the frequency response range of the first described electric road RC circuit is DC-1000 hertz, and input impedance is more than or equal to 30 megaohms.
2. earthquake-electromagnetic data harvester according to claim 1, it is characterized in that, described data acquisition channel also comprises: at least one magnetic data acquisition channel and at least one vertical magnetic are visited sensor, described magnetic data acquisition channel comprises: the secondary signal input end, a RC circuit, the second amplifier, the second analog-digital converter, the second data-carrier store and the second data-out port that connect successively, the vertical magnetic that described secondary signal input end connects described in one is visited sensor.
3. earthquake-electromagnetic data harvester according to claim 2, it is characterized in that, described data acquisition channel also comprises: at least one earthquake data acquisition passage and at least one seismoreceiver, described earthquake data acquisition passage comprises: the 3rd signal input part, the 2nd RC circuit, the 3rd amplifier, the 3rd analog-digital converter, the 3rd data-carrier store and the 3rd data-out port that connect successively, the 3rd described signal input part connects the seismoreceiver described in.
4. earthquake-electromagnetic data harvester according to claim 3, it is characterized in that, described in each, between the first amplifier, the second amplifier and the 3rd amplifier, interconnect, described in each, between the first analog-digital converter collection, the second analog-digital converter and the 3rd analog-digital converter, interconnect, described in each, between the first data-carrier store, the second data-carrier store and the 3rd data-carrier store, interconnect, described in each, between the first data-out port, the second data-out port and the 3rd data-out port, interconnect.
5. earthquake-electromagnetic data harvester according to claim 4, it is characterized in that, described earthquake-electromagnetic data harvester also comprises: control chip, described control chip connects the first described amplifier by control bus, the first analog-digital converter, the first data-carrier store, the second amplifier, the second analog-digital converter, the second data-carrier store, the 3rd amplifier, the 3rd analog-digital converter, the 3rd data-carrier store and the 3rd data-out port, be used for according to the data acquisition of earthquake-electromagnetic data harvester described in the gps data control of sampling rate and gps antenna transmission.
6. earthquake-electromagnetic data harvester according to claim 5, it is characterized in that, described earthquake-electromagnetic data harvester also comprises: described gps antenna, described gps antenna is connected with described control chip, comprises the gps data of coordinate data and time data to described control chip transmission.
7. earthquake-electromagnetic data acquisition system, it is characterized in that, described earthquake-electromagnetic data acquisition system comprises: at least one seismic data acquisition device, at least one electric power system, at least one wire controllable current source and at least one earthquake-electromagnetic data harvester as described in arbitrary claim in claim 1-6, wherein
Described seismic data acquisition device comprises: multiple earthquake data acquisition passages and multiple seismoreceiver, described earthquake data acquisition passage comprises: the signal input part, RC circuit, amplifier, analog-digital converter, data-carrier store and the data-out port that connect successively, and described signal input part connects the seismoreceiver described in;
Described seismic data acquisition device and described earthquake-electromagnetic data harvester be by a line or the setting that is arranged side by side, composition seismic grid;
Described wire controllable current source is laid in the one or both sides of described seismic grid;
Each described electric power system connects respectively the wire controllable current source described in.
8. earthquake-electromagnetic data acquisition system according to claim 7, is characterized in that, the excitation waveform of described wire controllable current source is rectangle square wave, and the cycle is 0.05s-40s.
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