CN216351275U - Deep sea resource detector - Google Patents
Deep sea resource detector Download PDFInfo
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- CN216351275U CN216351275U CN202123067679.0U CN202123067679U CN216351275U CN 216351275 U CN216351275 U CN 216351275U CN 202123067679 U CN202123067679 U CN 202123067679U CN 216351275 U CN216351275 U CN 216351275U
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Abstract
The utility model relates to a deep sea resource detector, wherein the detector comprises: the sensor is used for receiving natural electromagnetic wave signals reflected by the geologic body to be detected; the amplifying circuit is connected with the sensor and is used for amplifying the natural electromagnetic wave signals; the frequency selection circuit is connected with the amplifying circuit and used for screening the amplified natural electromagnetic wave signals to obtain frequency selection signals in a preset frequency band; and the upper computer is connected with the frequency selection circuit and is used for displaying the frequency selection signal. The utility model senses the natural electromagnetic wave signals reflected by the geologic body to be detected by using the sensor, amplifies and screens the natural electromagnetic wave signals to obtain the frequency-selecting signals, and can analyze the characteristics of the geologic body so as to obtain whether resources such as petroleum or natural gas exist nearby the geologic body. The detector has the advantages of small volume, light weight, convenience for field construction, large detection depth and high detection precision.
Description
Technical Field
The utility model relates to the technical field of detectors, in particular to a deep sea resource detector.
Background
Petroleum is a mineral resource known as "industrial blood". In the process of oil exploration, the oil reserves are calculated and determined according to the exploration degree and the exploration condition. At present, the existence of petroleum and natural gas is detected at sea, and the traditional geophysical method at home and abroad usually adopts an exploration means of a magnetic method and an artificial earthquake. However, the operation under sea has great limitations, mainly including the following points:
1) the traditional exploration means has long period, high cost and relatively low field work efficiency, and more workers and ships are needed in the field construction process.
2) The traditional geophysical prospecting method has weak anti-interference capability and relatively high requirements on field working environment, is particularly easy to be impacted by sea waves, and brings inconvenience to water surface construction.
3) Traditional geophysical prospecting equipment has complex accessories, poor field work mobility, low exploration result resolution and large influence of volume effect.
4) The traditional geophysical prospecting method has the advantages that the exploration depth is increased along with the increase of the depth, the error is increased, and the risk coefficient of drilling is increased.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a deep sea resource detector.
In order to achieve the purpose, the utility model provides the following scheme:
a deep sea resource finder comprising:
the sensor is used for receiving natural electromagnetic wave signals reflected by the geologic body to be detected;
the amplifying circuit is connected with the sensor and is used for amplifying the natural electromagnetic wave signal;
the frequency selection circuit is connected with the amplifying circuit and used for screening the amplified natural electromagnetic wave signals to obtain frequency selection signals of a preset frequency band;
and the upper computer is connected with the frequency selection circuit and is used for displaying the frequency selection signal.
Preferably, the sensor includes:
a first copper-clad plate;
the second copper-clad plate is adhered to the first copper-clad plate through glue, and an insulating layer is arranged between the first copper-clad plate and the second copper-clad plate;
and the shielding layer is coated on the outer side of the first copper-clad plate.
Preferably, the first copper clad laminate and the second copper clad laminate are the same in size and thickness.
Preferably, the material of the shielding layer is iron.
Preferably, the method further comprises the following steps:
and the band-pass filter circuit is respectively connected with the amplifying circuit and the frequency selecting circuit.
Preferably, the method further comprises the following steps:
and the rectifying circuit is respectively connected with the frequency selection circuit and the upper computer and is used for converting the frequency selection signal into a digital signal.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
the utility model senses the natural electromagnetic wave signals reflected by the geologic body to be detected by using the sensor, amplifies and screens the natural electromagnetic wave signals to obtain the frequency-selecting signals, and can analyze the characteristics of the geologic body so as to obtain whether resources such as petroleum or natural gas exist nearby the geologic body. The geophysical prospecting instrument has the advantages of small volume, light weight, simple operation, convenience for field construction, no influence of conventional electrical equipment, iron materials of ships or sea wave impact basically, large detection depth and high detection precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic diagram of electromagnetic wave reception in an embodiment provided by the present invention;
FIG. 2 is a diagram of a sensor architecture in an embodiment provided by the present invention;
fig. 3 is a working schematic diagram of the deep sea resource detector in the embodiment of the present invention;
FIG. 4 is a circuit diagram of a dual T network in an embodiment provided by the present invention;
FIG. 5 is a schematic diagram of a deep sea resource finder circuit according to an embodiment of the present invention;
fig. 6 is a flowchart of an electromagnetic signal screening method in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, the inclusion of a list of steps, processes, methods, etc. is not limited to only those steps recited, but may alternatively include additional steps not recited, or may alternatively include additional steps inherent to such processes, methods, articles, or devices.
The utility model aims to provide a deep sea resource detector to solve the problem of low efficiency of the traditional exploration method.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In order to achieve the purpose, the utility model provides the following scheme: a deep sea resource finder comprising: the device comprises a sensor, an amplifying circuit, a frequency selecting circuit and an upper computer.
The sensor is used for receiving natural electromagnetic wave signals reflected by the geologic body to be detected; the amplifying circuit is connected with the sensor and is used for amplifying the natural electromagnetic wave signal; the frequency selection circuit is connected with the amplifying circuit and used for screening the amplified natural electromagnetic wave signals to obtain frequency selection signals of a preset frequency band; and the upper computer is connected with the frequency selection circuit and is used for displaying the frequency selection signal.
The whole process of the deep sea resource detector receiving the natural electromagnetic wave is shown in figure 1. The left diagram in fig. 1 is a schematic diagram of the working principle of the instrument for receiving electromagnetic waves. The right diagram is a V-f diagram amplified by the instrument after frequency selection of the electronic disturbance in the sensor to the preset frequency bands (f1, fL). The sensor receives natural ultra-low frequency band electromagnetic waves. The current theoretical research result generally considers that when part of the electromagnetic waves come from solar wind (various rays and particle flows) bombard an ionized layer and a magnetic layer in high air, the magnetic layer and the ionized layer generate pulse electromagnetic waves of 0-2 ten thousand Hz, and the other part of the electromagnetic waves come from a thunder part in the atmosphere. When the electromagnetic wave from the high altitude reaches the ground, a part of the electromagnetic wave enters the underground, and a part of the electromagnetic wave is reflected back. Electromagnetic waves entering the underground follow the formula of the cutoff frequency of the low-frequency window of the earth: k rho/(a + h)2,k＝9×105. The magnitude and magnitude of the frequency of the electromagnetic wave reflected back to the earth's surface is related to the depth and physical characteristics of the interface, commonly known as the interface reflection coefficient
And (4) showing.
The deep sea resource detector is used for receiving and amplifying electromagnetic waves with different frequencies reflected from the ground, converting the electromagnetic waves into voltage numbers, and processing the voltage numbers through a certain mathematical equation to extract geological information. If the user listens to the music, the change of tone and volume can be recognized by the human ear only by converting different voltages into sound. The frequency range detected by the deep sea resource detector is usually 100-3000 Hz. The natural electromagnetic wave in the frequency band belongs to an ultra-low frequency band, and the wavelength is 100-3000 km according to the traditional electromagnetic wave theory.
The basic formula according to is the formula of the earth low frequency window in physics:
the formula shows that when the electromagnetic wave entering underground is reflected to the earth surface by a physical property interface at a certain depth, the attenuation of the energy is 0.707 times of the original attenuation. If the part of electromagnetic waves are received by a sensor, the part of electromagnetic waves are screened by a frequency selection circuit, and the theoretical derivation calculation formula of the voltage value of the cut-off frequency is as follows:
wherein, VfiIs the voltage value of the cut-off frequency, gamma is the reflection coefficient of the top interface of the geologic body to be detected to the electromagnetic wave, sigma is the stress value of the geologic body to be detected,
the apparent resistivity of the geologic body to be detected, H is the depth of the geologic body to be detected, A is an additional constant, a is one-half bandwidth of an instrument monitoring frequency point, B is a sensor sensitivity parameter, when the same instrument is used for measurement, the two parameters (a and B) are equivalent to a constant in a formula, and C isiIs a coefficient, k is a constant, and k is 9.4 × 105V is Poisson's ratio and E is elastic modulus.
Referring to fig. 2, further, the sensor of the present invention includes: the copper-clad plate comprises a first copper-clad plate 1, a second copper-clad plate 2 and a shielding layer 3.
The first copper-clad plate 1 and the second copper-clad plate 2 are the same in size and thickness, wherein the length of the first copper-clad plate 1 and the length of the second copper-clad plate 2 are 255mm, the width of the first copper-clad plate is 130mm, and the thickness of the first copper-clad plate is 1.5 mm. The second copper-clad plate is adhered to the first copper-clad plate through glue, and an insulating layer is arranged between the first copper-clad plate and the second copper-clad plate; the shielding layer is coated on the outer side of the first copper-clad plate, and the shielding layer is made of iron. In practical application, the two copper-clad plates must be flat, the shielding layer can be covered on the outer side of the first copper-clad plate by iron sheets, and the shorter the connecting line between the sensor and the preamplifier circuit, the better the connecting line.
Referring to fig. 3-5, further, the amplifying circuit of the present invention includes 0 pre-amplifying circuit and 1 pre-amplifying circuit for amplifying the weak natural electromagnetic wave signals received by the sensor step by step, and then inputting the signals into the frequency selecting circuit for frequency selection. The band-pass filter circuit is respectively connected with the amplifying circuit and the frequency selecting circuit and is used for removing external noise; the frequency selection circuit can select single frequency amplification or different frequency amplification, the working principle of the frequency selection circuit is to screen out each frequency band of signals amplified by the amplification circuit according to requirements, and then input each frequency band of signals into the rectification circuit, and it needs to be noted that the 1-path band-pass circuit is constructed based on a double-T network circuit, can screen electromagnetic wave frequencies with different depths, and then amplifies and inputs the electromagnetic wave frequencies into the rectification circuit step by step according to the depths. And the rectifying circuit is respectively connected with the frequency selection circuit and the upper computer (a computer or an embedded controller) and is used for carrying out A/D conversion on the frequency selection signal to form a digital signal.
The sensor, the amplifying circuit, the frequency selecting circuit and the like are all arranged in the box body, and the specification of the box body is as follows: 428mm by 360mm by 190 mm. The box body is also provided with an instrument control panel which mainly comprises 9 parts of an indicator light, a communication port 1, a communication port 2, a power jack, a switch, a reset key, a 0-way regulation part, a 1-way regulation part and a grounding end. The communication port 1 is used for being connected with an upper computer; the communication port 2 is used for copying data; the 0-path adjusting knob and the 1-path adjusting knob are used for manually adjusting the gain of the frequency selecting circuit, and the reset key is used for resetting.
The deep sea resource detector of the present invention is used to detect one physical point in sea basically corresponding to some geological data obtained through drilling one hole. Before the deep sea resource detector is used, the detector must be calibrated at a known drill hole, then a measuring line is arranged from known to unknown, tracking is carried out from near to far, meanwhile, geological interpretation is carried out on a later detection point by means of curve characteristics and physical property histograms of known data, and the occurrence depth, the apparent thickness, the oil-containing condition, the oil layer distribution condition and the like of oil and gas layers are judged.
The deep sea resource detector disclosed by the utility model is small in size, light in weight and simple to operate, and field work can be carried out on a ship by only 3 persons; the anti-interference capability is strong, and the influence of conventional electrical equipment, steamship ferrous materials and wave impact is basically avoided. The detection depth is large, and the stratum within 6000m of the water can be detected. Therefore, the deep sea resource detector can obviously improve the working efficiency, shorten the whole mineral exploration period 1/2-2/3 of traditional geology, geophysical prospecting and drilling, and greatly save the exploration cost.
Referring to fig. 6, the present invention further provides an electromagnetic signal screening method, which is applied to the deep sea resource detector, and includes:
step 1: acquiring a natural electromagnetic wave signal reflected by a geologic body to be detected;
step 2: amplifying and filtering the natural electromagnetic wave signal in sequence to obtain an amplified natural electromagnetic wave signal;
and step 3: determining the voltage value of the cut-off frequency according to the depth of the geologic body to be detected in the sea;
and 4, step 4: and screening the amplified natural electromagnetic wave signal by using the voltage value of the cut-off frequency to obtain a frequency selection signal of a preset frequency band.
Further, the step 3 specifically includes:
the formula is adopted:
determining a voltage value of the cut-off frequency; wherein, VfiIs the voltage value of the cut-off frequency, gamma is the reflection coefficient of the top interface of the geologic body to be detected to the electromagnetic wave, sigma is the stress value of the geologic body to be detected,
the apparent resistivity of the geologic body to be detected, H is the depth of the geologic body to be detected, A is an additional constant, a is one-half bandwidth of an instrument monitoring frequency point, B is a sensor sensitivity parameter, CiIs a coefficient, k is a constant, and k is 9.4 × 105V is Poisson's ratio and E is elastic modulus.
The utility model also provides an electromagnetic signal screening system, comprising:
the electromagnetic signal acquisition module is used for acquiring natural electromagnetic wave signals reflected by the geologic body to be detected;
the amplifying and filtering module is used for sequentially amplifying and filtering the natural electromagnetic wave signals to obtain amplified natural electromagnetic wave signals;
the cutoff frequency determining module is used for determining the voltage value of the cutoff frequency according to the depth of the geologic body to be detected in the sea;
and the electromagnetic signal screening module is used for screening the amplified natural electromagnetic wave signal by using the voltage value of the cut-off frequency to obtain a frequency selection signal of a preset frequency band.
Preferably, the cutoff frequency determination module includes:
a cut-off frequency determination unit for employing the formula:
determining a voltage value of the cut-off frequency; wherein, VfiIs the voltage value of the cut-off frequency, gamma is the reflection coefficient of the top interface of the geologic body to be detected to the electromagnetic wave, sigma is the stress value of the geologic body to be detected,
the apparent resistivity of the geologic body to be detected, H is the depth of the geologic body to be detected, A is an additional constant, a is one-half bandwidth of an instrument monitoring frequency point, B is a sensor sensitivity parameter, CiIs a coefficient, k is a constant, and k is 9.4 × 105V is Poisson's ratio and E is elastic modulus.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
the utility model senses the natural electromagnetic wave signals reflected by the geologic body to be detected by using the sensor, amplifies and screens the natural electromagnetic wave signals to obtain the frequency-selecting signals, and can analyze the characteristics of the geologic body so as to obtain whether resources such as petroleum or natural gas exist nearby the geologic body. The geophysical prospecting instrument has the advantages of small volume, light weight, simple operation, convenience for field construction, no influence of conventional electrical equipment, iron materials of ships or sea wave impact basically, large detection depth and high detection precision.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The method disclosed by the embodiment corresponds to the device disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the device part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (6)
1. A deep sea resource probe, comprising:
the sensor is used for receiving natural electromagnetic wave signals reflected by the geologic body to be detected;
the amplifying circuit is connected with the sensor and is used for amplifying the natural electromagnetic wave signal;
the frequency selection circuit is connected with the amplifying circuit and used for screening the amplified natural electromagnetic wave signals to obtain frequency selection signals of a preset frequency band;
and the upper computer is connected with the frequency selection circuit and is used for displaying the frequency selection signal.
2. The deep sea resource finder of claim 1, wherein the sensor comprises:
a first copper-clad plate;
the second copper-clad plate is adhered to the first copper-clad plate through glue, and an insulating layer is arranged between the first copper-clad plate and the second copper-clad plate;
and the shielding layer is coated on the outer side of the first copper-clad plate.
3. The deep sea resource detector of claim 2, wherein the first copper clad laminate and the second copper clad laminate are the same in size and thickness.
4. The deep sea resource finder according to claim 3, wherein the shielding layer is made of iron.
5. The deep sea resource finder according to claim 1, further comprising:
and the band-pass filter circuit is respectively connected with the amplifying circuit and the frequency selecting circuit.
6. The deep sea resource finder according to claim 1, further comprising:
and the rectifying circuit is respectively connected with the frequency selection circuit and the upper computer and is used for converting the frequency selection signal into a digital signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123067679.0U CN216351275U (en) | 2021-12-08 | 2021-12-08 | Deep sea resource detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123067679.0U CN216351275U (en) | 2021-12-08 | 2021-12-08 | Deep sea resource detector |
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| CN216351275U true CN216351275U (en) | 2022-04-19 |
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