Device designed to monitor local irregularities and geodynamic zones of geological section top part (gst)

FIELD: instrument making.

SUBSTANCE: invention relates geophysics, particularly, to electromagnetic LF devices intended for analysing GST. Proposed device comprises two antennas arranged orthogonally and connected to receiver, one of them being installed vertically. Proposed device comprises additionally data processing device and third antenna arranged orthogonally to aforesaid two antennas and connected to aforesaid receiver. The later incorporates transmitter with its output connected to the data processing device input. Transmitter allows transmitting signals comprising data on mutually-orthogonal components Hx, Hy, Hz of natural pulsed electromagnetic Earth field to data processing device the later allows computation of Wzx (x, y)=Hz/Hx and Wzy (x, y)=Hz/Hy, determination of relationship Wzx=F(Δf) and Wzy=F(Δf), where "ДГ" is the range of received frequencies of mutually-orthogonal components Hx, Hy, Hz, from f0 to f and integration of aforesaid relationships Wzx and Wzy.

EFFECT: expanded performances, higher accuracy.

9 cl, 5 dwg

 

The invention relates to Geophysics, in particular to low-frequency electromagnetic devices for exploring the upper part of geological section high frequency resolution, control and prediction of stress-strain state (SSS) of the rock mass. It can be used to identify and contouring profile when shooting local geoelectric inhomogeneities (watered mould, karst cavities, landslide zones, mine part-time work, increased fracturing, intervals, loose rocks etc). This invention specifically can be used for network monitoring for operational monitoring of the VAT in the areas of gas transmission systems in areas of activation dangerous man-made geological processes. The results of such monitoring are of practical use when an objective assessment and prediction of risk, ensuring safety of operation is responsible of the gas of interest and timely adoption of managerial decisions.

A device for detection of local inhomogeneities and geodynamic zones of the upper part of geological section high frequency resolution, included in the device to search for and define the boundaries of tectonic disturbances in the development of coal deposits, containing the receiving antenna, connected with the sighting tube of the receiver, installed on the tripod, and the tripod is equipped with tokoprovodyaschaya rod, which is attached to the tripod with the possibility of rotation in its upper part, the receiving antenna is fixed in the lower part tokoprovodyaschaya rod through a universal joint, forming a swivel freely suspended pendulum (USSR Author's certificate No. 1721242, E21C 41/18, publ. 23.03.1992).

The device also includes a transmitting antenna mounted on a second tripod, and the transmission and reception antenna made framework. This device uses active radio wave method of research in which to search for tectonic and other geological discontinuities using an electromagnetic wave.

A limitation of this device is a great complexity of its use, especially when large areas of the surface being examined, and that the device is difficult to use when monitoring for operational monitoring of the VAT in the areas of gas transmission systems in areas of activation dangerous man-made geological processes.

The closest is a device for the detection of local inhomogeneities and geodynamic zones of the upper part of geological section high frequency resolution, containing two antennas located mutually orthogonal, one of which is oriented vertically, and poseiden is installed to the receiving device (RF Patent for the invention №2328021, G01V 3/12, publ. 10.02.2008).

This device is also included with the device for geophysical surveys of the radio wave method. The antenna is made of the framework. Vertically oriented antenna of this device performs the function of antenna spatial orientation (APO) and is not used directly in the conduct of geophysical research.

The application of this device is time-consuming, due to the use of the framework of antennas it has a large size, the device has low accuracy and validity of the results because the measurements are not synchronous, and for a long time one antenna of the receiving device oriented horizontally, and devices for field studies must be migrated to different parts of the analyzed high frequency resolution.

Solved by the invention to improve technical and operational capabilities.

The technical result, which can be obtained by carrying out the invention, the enhancement of the accuracy, reliability, and usefulness, functionality enhancements by identifying in real-time local inhomogeneities and geodynamic zones in the field of high frequency resolution and estimation of their energy.

To solve the problem with the achievement of the technical result in the known device for about what Eugenia local inhomogeneities and geodynamic zones of the upper part of geological section high frequency resolution, contains two antennas, located mutually orthogonal, one of which is oriented vertically and connected to the receiving device according to the invention is introduced to the processing device and the third antenna connected to the receiving device and located orthogonal to the above-mentioned two antennas, and the receiving device is equipped with a transmitter, the output of which is connected to the input of the processing device and configured to transmit signals with data about mutually orthogonal components Hx, Hy, Hz flux density natural pulsed electromagnetic field of the Earth (EIANZ) to the processing device and the processing device is configured to calculate two main complex amplitude mV frequency parameters - tippers Wzx(x, y)=Hz/Hx and wzy data member(x, y)=Hz/Hy, whether Wzx=F(Δf) and wzy data member=F(Δf), where Δf is the range of acceptable frequencies are mutually orthogonal components Hx, Hy, Hz, f0to f and with the possibility of integrating dependency Wzx and wzy data member to get them square

respectively.

Possible additional embodiments of the device in which it is advisable to

- introduced universal joint, rod, means for rotating the rod, the first, second and third antenna by means of a vertical antenna is connected to the cardan joint, which through rod connected to the means of its rotation;

- was introduced traverse the pipe that is installed on the tool rotation rod, and traverse the pipe is made removable;

- introduced the means for guiding the vertical antenna vertically, which is made in the form of a circular level, suspended on the longitudinal axis of the vertical antenna.

- was introduced sheath made radiotransparent and sealed in the form of a sphere, and the first, second and third antennas are located in the shell;

the first, second and third antennas were made of ferrite cores placed on them by the coils.

Additionally it is advisable to

- each of the antennas was performed at least three ferrite cores placed on each of the coils;

- was introduced electrostatic screen, which surrounds the coils;

in electrostatic screen was performed, at least one cross the gap.

These advantages, and features of the invention are explained the best option its performance with reference to the accompanying drawings.

Figure 1 depicts schematically the proposed device;

figure 2 same as figure 1, functional diagram, one of the possible variants;

figure 3 schematically receiver-transmitter, i.e. the part of the device, before aznacennia to measure the mutually orthogonal components Hx, Hy, Hz flux density EINS;

4 is a diagram of the locations of transmitter-receiver pairs and the reference station for the pipeline;

figure 5 is the same as figure 1, for the studied surfaces.

Device for the detection of local inhomogeneities and geodynamic zones of the upper part of geological section high frequency resolution (figure 1) contains two antennas 1 and 2, located mutually orthogonal. One of the antennas, for example 1, is oriented vertically. Antennas 1 and 2 is connected to the receiving device 3.

Entered the processing device 4 and the third antenna 5 connected to the receiving device 3 and located orthogonal to the above-mentioned two antennas 1 and 2. The receiving device 3 is equipped with a transmitter 6, the output of which is connected to the input of the processing device 4 and is arranged to transmit signals with data about mutually orthogonal components Hx, Hy, Hz flux density EINS on the processing device 4.

The transmitter 6 may be performed in various ways and is associated with the processing device 4, for example, satellite communication, radio communication, satellite communication, etc. figure 2 shows one possible functional circuits enable communication with the processing device 4. Although there are many well-known schemes for the transmission of information via different communication channels, differing from each other as shemotehnicheski and solutions and ways of conveying information.

The device 4 treatments (1, 2) is configured to calculate two main complex amplitude mV frequency parameters - tippers Wzx(x, y)=Hz/Hx and wzy data member(x, y)=Hz/Hy, whether Wzx=F(Δf) and wzy data member=F(Δf), where Δf is the range of acceptable frequencies are mutually orthogonal components Hx, Hy, Hz, f0to f and with the possibility of integrating dependency Wzx and wzy data member to get them square

andrespectively.

The above calculation device 4 carries out with the help of appropriate software.

In the claimed device (3) can be introduced universal joint 7, 8 bar (non-conducting), the tool 9, the rotation of the rod 8 (for example, the thrust bearing). First, second and third antennas 1, 2 and 5 respectively through the vertical antenna 1 is connected to a cardan hinge 7, through which the rod 8 is connected to the means 9 of its rotation. The tool 9 is a bearing unit.

Also, a traverse tube 10 mounted on the vehicle 9, the rotation of the rod 8, and traverse the pipe 10 is made removable.

In addition, it is expedient to introduce the tool 11 to the vertical orientation of the antenna 1 in the vertical direction. The tool 11 may be made in the form of a circular level is, hanging on the longitudinal axis of the vertical antenna 1.

It is advisable to enter in the device shell 12 made of the radio waves and sealed in the form of a sphere, while the antenna node, the first, second and third antennas 1, 2, 5 are located inside the shell 12.

First, second and third antennas 1, 2, 5 should consist of ferrite rods 13 placed on them by the coils 14.

Each of the antennas 1, 2, 5 performed at least three ferrite cores placed on each of the reels 14 (Fig 3).

In addition, it is expedient to introduce into the device electrostatic screen 15, which surrounds the coils 14.

In an electrostatic screen 15 may be made of at least one transverse gap 16.

Figure 3 also shows the dielectric holder 17 of the antennas 1, 2 and 5; the screw axis 18 with cargo balances 19; tip 20 with a screw 21 for fixing the antenna unit to the cardan joint 7; part of the tripod 22; alidade 23 of the horizontal circle of theodolite pipe 10; detachable slotted node 24 traverse the pipe 10; cable 25 connection; coupling a waterproof 26, the receiver 27 (versions may be absent), protective bunker 28 (when using a tripod 22 may be absent).

The proposed device operates as follows.

Perform the tuning of the receiving / transmitting device (Phi is .3).

Under profile shooting tripod 22 have at a given point profiles. When this set up a vertical antenna 1 is strictly Z-axis loads counterbalance 19 using the circular level means 11. Further, the rotating traverse the tube 10 around the vertical axis and watching through her visor brand marker, mounted at the end of the profile, and using alidade 23 and a regular micro screws theodolite, achieve an exact match of the Central risks traverse the pipe 10 with the vertical line marks the rapper, achieving a precision sight of ±1' and, thereby, through the detachable slotted node 24 strictly oriented in the space of the antenna 2, located on the x-axis.

To increase the bandwidth of operating frequencies (wide bandwidth), each of the antennas 1, 2, 5 performed at least three ferrite cores placed on each of the reels 14. Electrostatic screen 15 is used for additional guidance flux density EINS on the coil 14. Execution of the transverse gap 16 in an electrostatic screen 15 increases the effect of guidance.

After you configure all of the receiving / transmitting device And (3) start measurement. Amplifiers (figure 2) amplify the signals produced by the coils 14 of the antennas 1, 2 and 5 which are fed to the filters tunable to scan the entire specified frequency range,for example from 1 to 200 kHz, received by the transmitter for forwarding the signals to the processing device 4. These signals via the receiving / transmitting device and the switch device 4 is coming to an analog-to-digital Converter where it is converted into a digital form. The controller is used to control the operation of peripheral equipment. Signal processing for finding these values of mathematical expressions is performed by the computer (laptop).

In addition, the processing device 4 may generate the control signals from the computer through the controller receives at digital to analog Converter (DAC), and then through the switch and receiver-transmitter device 4 is sent to the receiver (figure 2) transmitting and receiving device and through it to the control unit, which controls the reconstruction filters and functioning transmitters induced in coil 14 of the antennas 1, 2, 5 signals. You can use different functional circuits of the receiving / transmitting device a and the device 4, which are used by the communication channels and methods of processing.

In practice, the device operates as follows.

On the profile or area studies (4, 5) stationary set of the receiving / transmitting devices And measuring electromagnetic field emissions geodynamic nature EINS For ease of reading drawing figure 5 shows the relationship of the receiving / transmitting devices And device 4 processing only for extreme mV stations of each row. The same type of receiving-transmitting devices And the base station(s) B is placed on the surface, obviously free from geodynamic geoelectric inhomogeneities to compensate for the influence model and instrumental noise, the measurement results of the measuring device 4 processing. As already mentioned, the inputs/outputs of transmitter-receiver pairs And can be linked to inputs/outputs of the processing device 4. cable, radio or satellite communication, etc.

Since the magnetic sensors transmitter-receiver pairs, And are three antennas with narrow beam pattern, the form of which drastically depends on the anisotropy of rocks, antenna, located on the X-axis, for all transmitter-receiver pairs And initial in the space traversed by a pipe 10 with an accuracy better than 1 minute strictly in one direction, for example along the axis of preferred orientation of tectonic elements, or along the axis of the pipeline. Any other methods of sight of the antennas in the study of high frequency resolution electromagnetic field emissions (eye, using a compass, surveying compass etc) are incorrect because the error of sight more than 1° results in a measurement error of up to 50% and more.

Then, in the j-th time on the network of points of the i-th profile or monitoring, where the set p is jemo-transmitting devices And, conduct simultaneous, simultaneous measurement of three components of the magnetic field Hx, Hy, Hz receiving-transmitting device and the base station B in the interval of the recorded frequency Δf=1÷200 kHz. Compensate the influence of the model and tool interference device 4 processing using the measured Hx, Hy, Hz with base station B to highlight the useful signals.

The processing device 4 is a server, which computes two main complex amplitude mV frequency parameter tipper Wzx(x, y)=Hz/Hx and wzy data member(x, y)=Hz/Hy, vectors Wiese-Parkinson who find the ratio between the vertical component Hz of the magnetic field and the horizontal components Hx and Hy. Next, build graphs of frequency parameters-tippers Wzx=F(Δf) and wzy data member=F(Δf) fields that relate the spectra of its different components in the same or different locations and being in the frequency domain as the primary data subject to interpretation.

Unit 4 processing next determines by integrating the spectrum of frequencies from 1 to 200 kHz integrated value of the area S1and S2who are the frequency characteristics of the geoelectric conditions in the i-th point of the j-th point in time and provide a full description of the geological environment, its layered structure and the anomalous zones. The behavior of tippers Wzx and wzy data member and complete the parameters S 1and S2judge forms, properties, structure, intensity and location of local inhomogeneities, geodynamic zones high frequency resolution.

In the study of geodynamic zones high frequency resolution based on graphs of frequency dependencies of tippers Wzx and wzy data member build maps of isolines for the j-th moments time and time lag Δt of change of the amplitudes of the signals from different i-x of the points of network monitoring in relation to the signals of the reference station calculates the rate of change of tippers acceleration α~1/2(development-attenuation geodynamic process), which significantly improves the reliability of the forecast activation of dangerous geological processes.

To improve the reliability of the results of the study of high frequency resolution field measurements and their interpretation are performed simultaneously using the installed device 4 processing software that provides control of the receiving / transmitting devices And base stations B collection, transmission of information via radio, GSM or satellite communications, information storage, processing and display on the display server in real time.

The most successful of the claimed device for monitoring local inhomogeneities and geodynamic zones of the upper part of geological section high frequency resolution is industrially applicable for the identification and delineation of the profile shot of the geo is historical local inhomogeneities and for operational monitoring of the VAT in the areas of gas transmission systems in areas of activation dangerous man-made geological processes.

1. Device for the detection of local inhomogeneities and geodynamic zones of the upper part of geological section high frequency resolution, containing two antennas located mutually orthogonal, one of which is oriented vertically and connected to the receiving device, characterized in that the processing device and the third antenna connected to the receiving device and located orthogonal to the above-mentioned two antennas, and the receiving device is equipped with a transmitter, the output of which is connected to the input of the processing device, configured to transmit signals with data about mutually orthogonal components Hx, Hy, Hz flux density natural pulsed electromagnetic field of the Earth on the processing device, and the device processing executed with the ability to calculate two main complex amplitude mV frequency parameters - tippers Wzx(x, y)=Hz/Hx and wzy data member(x, y)=Hz/Hy, whether Wzx=F(Δf) and wzy data member=F(Δf), where Δf is the range of acceptable frequencies are mutually orthogonal components Hx, Hy, Hz, f0to f and with the possibility of integrating dependency Wzx and wzy data member to get them squareandrespectively.

2. The device of claim 1, characterized in that the input universal joint, rod, means for rotating the rod, the first, the second and Retie antenna through vertical antenna is connected to a cardan hinge, which through rod connected to the means of its rotation.

3. The device according to claim 2, characterized in that the introduced traverse the pipe that is installed on the tool rotation rod, and traverse the pipe is made removable.

4. The device according to claim 2, characterized in that the means for guiding the vertical antenna vertically, which is made in the form of a circular level, suspended on the longitudinal axis of the vertical antenna.

5. The device according to claim 2, characterized in that the shell made of the radio waves and sealed in the form of a sphere, and the first, second and third antennas are located in the shell.

6. The device according to claim 1, characterized in that the first, second and third antennas made of ferrite cores placed on them by the coils.

7. The device according to claim 6, characterized in that each of the antennas performed at least three ferrite cores, placed on each of the coils.

8. The device according to claim 6, characterized in that the input electrostatic screen located around the coils.

9. The device according to claim 8, characterized in that the electrostatic screen is made of at least one transverse gap.



 

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2 dwg

FIELD: pipeline construction technologies.

SUBSTANCE: method shows presence and location of defects of metallic pipelines, includes measuring above pipeline in given points during movement of magnetic field vectors in rectangular coordinates, by at least two three-component sensors, tensor of magnetic field gradients is built, by matrix transformation received information is processed, on basis of results background value is estimated and deviations from this value, on basis of difference of which for given criterion value from background value presence and location of defects of metallic pipelines is decided and magnetic graph is built to show location of defects. Device for realization of method has registration sensors system, quartz generator, frequency divider, analog-digital converter, control block, threshold block, sound and light indication block, automatic battery charge indicator, block for calculation of magnetic field gradients, block for showing information, recording device segment, recording control block, situation alignment block, block for satellite absolute geographic alignment GPS, block for selecting recording segment.

EFFECT: broader functional capabilities, higher trustworthiness, higher efficiency.

2 cl, 4 dwg

FIELD: electro-surveying by inductive profiling method, possible use for studying composition of upper part of geological cross-section.

SUBSTANCE: method uses electromagnetic field source and receiving magnetic indicator distanced from one another. Mutual orientation of electromagnetic field source and receiving magnetic indicator is such, that in normal secondary electromagnetic field, excited in radiated geo-electric section without homogeneousness, measured component of magnetic field strength is close to zero. Profiling is performed by means of horizontal displacement relatively to boundary of earth-air splitting simultaneously of source of electromagnetic field and receiving magnetic indicator with discontinuous or continuous registration of abnormal component of magnetic field. On basis of its distribution, presence of geo-electric non-homogeneousness is determined.

EFFECT: increased efficiency and resistance to interference, decreased laboriousness.

1 dwg

FIELD: technology for finding deposits of oil and gas, possible use for finding hydrocarbon resources in carbon rocks of foundation of oil-gas containing precipitation beds.

SUBSTANCE: method includes taking samples from oil and gas bearing area with carbon foundation, adjacent to subterranean continental paleorift. Magnetic susceptibility of these is measured. On appearance of magnetic susceptibility values within range 13,0·106-31,0·106 presence of deposits is determined.

EFFECT: increased precision of finding deposits in carbon rocks of foundation, simplified method, lower costs.

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