RU103194U1 - UNIVERSAL SEISMIC MODULE - Google Patents

Abstract

 1. A universal seismic module containing a sealed container with a receiving and recording equipment installed in it, characterized in that the container consists of two parts that are tightly interconnected due to the fact that at least the air is pumped out of the housing in the normal state of the seismic module , up to 0.1 atmospheric pressure, one part of the housing is made in the form of a casing mounted on a power platform, equipped with a removable pin-deepener, an electrical connector and a plug, installed on the power platform three casings, a block of geophones and a recording device that includes two electronic cards: on one there are four receiving channels, made on the basis of microcircuits and forming a recording unit, as well as a quartz oscillator in the form of a highly stable thermostated generator that provides storage by a time module, a PIC controller, a flash reader -cards, power converters that convert the battery voltage to the voltage of the registration unit, and on the second there is a power management device and battery containers. ! 2. The universal seismic module according to claim 1, characterized in that the casing of the container is made of a cylindrical shape. ! 3. The universal seismic module according to claim 1, characterized in that the casing assembly with the power platform is designed to work at a depth of 10 m.! 4. The universal seismic module according to claim 1, characterized in that the electrical connector is equipped with a sealed cover that allows the connector to operate at a depth of 10 m.! 5. The universal seismic module according to claim 1, characterized in that the lower part of the power platform is connected to a pin-deepener in the middle�

Description

The utility model is a universal seismic module used in seismic exploration for receiving seismic vibrations, converting them into an electrical signal, and can work both on land and in shallow water.

A universal seismic module is designed to record seismic vibrations both at the bottom of water areas up to 10 m, as well as on land along the three components X, Y, Z from geophones forming the right orthogonal triple.

The seismic module as a land module is designed for installation on land for the purpose of recording seismic vibrations on a flash card, for conducting seismic studies, and the seismic module can operate in shallow water.

The seismic module records seismic vibrations on the profile at the bottom of the water area and on land using the three components X, Y, Z from geophones.

During operation, seismic modules can be located both in the field, during operations on the profile, and on any means of delivery to the place of work. On delivery vehicles, seismic modules must be securely fastened. The direct operation of seismic modules should be carried out at temperatures from minus 30 to plus 50 degrees Celsius.

The invention is known "Ground-bottom seismic station", patent RU 2381526, publ. 02/10/2010, IPC G01V 1/00, G01V 1/38, which is installed on land and in water, containing a sealed enclosure with a platform on which a cylindrical glass with recording equipment placed in it is installed, the invention allows to expand the field of use, however, a complicated and a bulky system of devices providing a vertical position of the axis of the sealed spherical body. The station does not allow work in any spatial orientation, without static deviations.

The invention is known "Method and installation for ground-based registration of seismic data", patent RU 2352960, publ. 04/20/2009, IPC G01V 1/16, using a device containing a non-spherical fully enclosed body, a seismic data recorder containing long-term memory located inside the body with the ability to store seismic reflected waves during seismic research over a long period of time. This device does not require external cabling for communication and power supply from the control station or cabling between the components of the unit in the seismic data acquisition unit itself. However, it does not ensure the universality of its use, so it cannot be installed both on the bottom and on the ground during work on a single land-sea profile without any design changes, it does not provide the ability to install from any means of delivery to the place of work.

Known invention "Offshore autonomous bottom station for seismic exploration and seismological monitoring", patent RU 2294000, publ. 02.20.2007, IPC G01V 1/38, including a sealed enclosure with geophysical equipment located inside the enclosure, a registration unit, a conversion and storage unit for registered signals. However, it is required to interface with the airborne module during ascent, the anchor is ballast and other devices. It does not work on land, and can also be installed only with floating equipment. It does not provide work in any spatial orientation, without any static deviations, cannot be used during work on a single land-sea profile without any design changes.

The closest technical solution to the proposed universal seismic module is the utility model "Bottom Seismic Station" SDS ", patent RU 83345, publ. 05/27/2009, IPC G01V 3/02, containing a pressure enclosure in which a sensor, a power source, a recorder that contains orthogonal sensors are located, while recording and recording information is carried out on a flash card. The utility model allows you to create a device more reliable in operation and more sensitive. However, the high location of the displacement sensors relative to the bottom and the elastic fastening of the station to the load reduces the sensitivity of the station to displacement waves. In addition, the acoustic system of additional control of the station’s position and the geophone significantly complicates its design, makes working with it on land not convenient (the mass and dimensions are large, the acoustic elements are sensitive to mechanical stresses), the station’s design does not allow it to work in any weather conditions wide temperature range.

Currently, it is practiced to install measuring modules from automatic stations, which can be placed both on the ship and on other delivery vehicles, for example, land all-terrain vehicles. In addition, the need to drop in the simplest and most reliable way from different media is also necessary in order to install measuring equipment in these modules both on the bottom and on the ground. Moreover, it is required during work to ensure the installation of such modules on a single “land-sea” profile without any design changes. The installation of stations on a single profile allows (after processing and interpretation) to obtain data on hydrocarbon deposits and on the deep structure of the earth's crust, which are obtained in one experiment, which significantly increases the reliability of such measurements. For simpler and less costly data acquisition, an autonomous and universal measuring module is required, which can be automatically reset from the station from any media. In addition, it is necessary, as far as possible, to store this data in the module in the simplest way for a long time and by simply connecting the module’s connector to the computer, to remove all the data accumulated over the period of time during which measurements were taken.

The proposed utility model allows to achieve the following technical result:

- to provide work in any spatial orientation, without any static deviations;

- implementation of work in all weather conditions and in a wide range of atmospheric effects;

- registration of seismic signals both on land and in water at a depth of 10 m;

- and also achieve the universality of the use of the measuring module, because:

- it allows you to install it both on the bottom and on the ground, while working on a single land-sea profile without any design changes;

- it allows you to install it from any means of delivery to the place of work.

This technical result is achieved as follows.

The universal seismic module contains a sealed container with a receiving and recording equipment installed in it. A distinctive feature in comparison with the prototype is that the container consists of two parts - the casing and the power platform, which are hermetically connected to each other due to the fact that in the normal state of the seismic module air is pumped out of the container to at least 0.1 (atm ) from atmospheric pressure. One part of the container is made in the form of a casing mounted on a power platform, equipped with a removable pin - a deepener, an electrical connector and a plug. On the power platform inside the casing are installed: a block of geophones and a recording device that includes two electronic boards. On one, in particular, there are four receiving channels, made on the basis of microcircuits and forming a registration unit, as well as a quartz oscillator in the form of a highly stable thermostatically controlled oscillator that provides storage by a time module, as well as a PIC controller and a flash card reader, power converters, converting battery voltage to the voltage of the registration unit. The second electronic board houses a power management device and battery containers. In this case, the container casing is made, for example, of a cylindrical shape. The casing assembly with the power platform is designed to work at a depth of 10 meters. The electrical connector is equipped with a sealed cover that allows you to work at a depth of 10 meters. The lower part of the power platform is connected to a pin-deepener by means of a fastener by a detachable connection, for example, by bolts. The pin-deepener is located in the center of the power platform and is made conical in shape. In addition, the pin-deepener from the end part facing the power platform is equipped with a cavity in which a sealed connector is located for communication with the module programmed to collect data and stop data collection, to obtain accurate time from the GPS antenna.

The power supply includes four lithium batteries, and the geophones block consists of three geophones forming the right orthogonal triple with a range of input signals from 10 to 250 Hz and a sensitivity of 27 V / m / s. Four identical input channels, located on one electronic board, are based on, for example, AD1555 \ AD1556 microcircuits from ANALOG DEVICES. The second electronic board has four containers for lithium batteries. The casing and the platform are hermetically connected by the difference of the external pressure and the pressure in the internal volume of the container formed by the casing and the power platform. At the same time, one of the electronic boards can be equipped with a synchronizer, operating from a GPS receiver of the exact time, and providing accurate binding of the registration unit to the current time. The operation of the module comes from a single master quartz oscillator, which is used as a highly stable thermostatic generator type M32008 - 8,192M "Dahlia" with frequency instability + \ - 5 * 10-9 manufacturer FSUE ONIIP.

The proposed technical solution is illustrated by drawings. However, the presented drawings do not cover all possible modifications of this module.

Figure 1 - shows a section of the measuring module, on the power platform shows a cutout of the mounting cap

Figure 2 - shows a cross section of the power platform with two electronic boards mounted on it, shows a cutout of the electrical connector with a sealed cover mounted on it

The seismic module consists of a casing (1) and a power platform (2), which form a sealed container. Tightness is ensured due to the fact that after collecting the module in a normal state, air is pumped out through the plug (3) to obtain a vacuum inside the container to 0.1 atmosphere. The vacuum port plug (4) is necessary to create a reduced atmospheric pressure inside the cylindrical sealed container of the seismic module. In working condition, as well as during prolonged storage of the seismic module, the cavity inside the container should be under reduced atmospheric pressure, about 0.1 atm. This ensures the absence of moisture inside the container, the formation of which is unacceptable. The air is pumped out through the vacuum port (4), which is a small diameter hole closed by a sealed plug (3) of the vacuum port. When the plug (3) of the vacuum port (4) is removed, air is pumped out from the internal cavity using a vacuum pump. On the power platform (2) there is also an electrical connector (5). Connector (5) is designed to connect to the seismic module of the computer using the start and control cable, without opening the container. When external devices are disconnected, the connector is closed by a sealed cover that allows this unit to work at a depth of 10 meters. On top of the connector (5), on the power platform (2), on the lower side, a removable pin - a deepener (6) is mounted on the bolts, which has a conical shape that secures the seismic module in the ground on land or on the bottom.

Inside the casing (1) on the mounts are two electronic boards (7, 8), a block of geophones (9). The block of geophones (9) is a right orthogonal triple of geophones having a range of input signals from 10 to 250 Hz and a sensitivity of 27 V / m / s. The X axis of the orthogonal triple is marked with a risk on the platform, which allows you to orient the station when working on the profile.

Two electronic boards (7, 8) form a recording device. On the first electronic board (7) there are four receiving channels, made on the basis of microcircuits and which are part of the recording device, as well as a quartz generator in the form of a highly stable thermostated generator that provides storage by a time module, a PIC controller, a flash card reader (10), power converters that convert the voltage of the batteries (11) into the supply voltage of the recording device. All these devices are microcircuits, they are not shown in the drawing, they are located on the Registrar board, see Maintenance Appendix 2. Electrical connection diagram. I would not want to post more detailed electronic circuits of the device for free access.

The recording device is a card (7), on which there are four identical channels, made on the basis of AD1555 \ 1556 microcircuits from ANALOG DEVICES. Chips provide amplification and conversion of seismic data from geophones to digital form. The PIC controller provides registration control and data recording on a flash card (10). One of the electronic boards (7, 8) is equipped with a synchronizer operating from a GPS receiver of the exact time (connected via an electrical connector on the case when preparing the module for work and when data collection is stopped), and providing accurate binding of the time recording unit.

On the second board (8) are a power management device and battery containers. As batteries (11), for example, lithium batteries are used. The power supply includes 4 lithium batteries.

The control device is designed to organize power management of the seismic module. To store seismic information in a seismic module, flash cards are used (10).

The time storage of the seismic module comes from a single master crystal oscillator, which uses a highly stable thermostated generator.

The seismic module operates as follows.

Seismic exploration is a geophysical method for studying geological objects using elastic waves - seismic waves. This method is based on the fact that the propagation velocity and other characteristics of seismic waves depend on the properties of the geological environment in which they propagate: on the composition of the rocks, their porosity, fracture, fluid saturation, stress state and temperature conditions.

In this case, three types of seismic waves are excited: longitudinal (P), transverse (S) and surface (Love and Rayleigh waves).

To obtain seismic data on a single profile, seismic modules are installed at a certain distance along the entire profile. In this case, the profile can pass both by land and along the seabed. Therefore, it is important that during the development of the profile modules of one sample are placed in order to obtain the most reliable information.

After a certain period of time, the modules are collected to remove information from them. All this time, the collected seismic information is stored in the module itself. Elastic vibrations are recorded in the form of a trace on electronic media, for example, on flash cards of the Compact Flash card (CF) type with a capacity of 4 GB.

Complete with seismic modules (for working with them), the MGK 203.02.04.00.000 synchronizer, an on-board seismic device (BSU), designed to initialize the seismic module before setting up the profile and reading seismic information from the seismic module after finishing work on the profile, are manufactured.

They control the operation of devices without opening the container (1), only when connected to a computer using special programs. Connection via cable through the connector (4) on the platform (7). in this case, the seismic module can operate in the switching system of the modules of the bottom stations, for example, type MGK 204.00.00.00.000.

To fulfill these requirements, all boards and blocks are mounted in the proposed seismic module before installation, in the case and on the power platform.

The following geophones can be used as geophones:

for X coordinate - Horizontal Geophone GS-20DX

for the coordinate - Y Geophone horizontal GS-20DX

for Z coordinate - Vertical Geophone GS-30CT

The crystal oscillator M32008-TS-8.192M, Dahlia, FSUE ONIIP can be used as the master quartz oscillator.

In this case, the module provides the operating ranges of the recorded frequencies, Hz from 0.05 to 1600, and the operating temperature range of the registration device (7), deg. Celsius from -30 to +50. This ensures an effective noise level depending on the range and gain, μV from 0.08 to 20.

Further in working condition, as well as during prolonged storage of the seismic module, the cavity inside the container should be under reduced atmospheric pressure, about 0.1 atm. This ensures that moisture is not formed inside the container. When the plug (3) of the vacuum port is removed, air is pumped out from the internal cavity using a vacuum pump. Then, after 5-7 minutes (the time required to verify the tightness of the pressure gauge), the hole is sealed with a vacuum port plug. Then, the pin-deepener (6) will be fixed. The seismic module is initiated (programmed to collect data, synchronized with GPS time) and placed at a given point. After it is lifted, information is downloaded through the connector (5), checked against the GPS time (to account for the “departure” of the module’s internal clock) without depressurizing the container. Then, if necessary, the module is installed in another place.

Thus, the universality of the operation of such a module is achieved and the possibility of its operation on a single profile without structural modifications is provided. The module works in all weather conditions and in a wide range of atmospheric influences due to the durable airtight container (casing) and the use of a thermostatically controlled quartz oscillator.

Claims (14)

1. A universal seismic module containing a sealed container with a receiving and recording equipment installed in it, characterized in that the container consists of two parts that are tightly interconnected due to the fact that at least the air is pumped out of the housing in the normal state of the seismic module , up to 0.1 atmospheric pressure, one part of the housing is made in the form of a casing mounted on a power platform, equipped with a removable pin-deepener, an electrical connector and a plug, installed on the power platform three casings, a block of geophones and a recording device that includes two electronic cards: on one there are four receiving channels, made on the basis of microcircuits and forming a recording unit, as well as a quartz oscillator in the form of a highly stable thermostated generator that provides storage by a time module, a PIC controller, a flash reader -cards, power converters that convert the battery voltage to the voltage of the registration unit, and on the second there is a power management device and battery containers. 2. The universal seismic module according to claim 1, characterized in that the casing of the container is made of a cylindrical shape. 3. The universal seismic module according to claim 1, characterized in that the casing assembly with the power platform is designed to work at a depth of 10 m 4. The universal seismic module according to claim 1, characterized in that the electrical connector is equipped with a sealed cover that allows the connector to work at a depth of 10 m 5. The universal seismic module according to claim 1, characterized in that the lower part of the power platform is connected to the pin-deepener by means of fastening detachable elements. 6. The universal seismic module according to claim 1, characterized in that the pin-deepener is located in the center of the power platform and is made conical in shape. 7. The universal seismic module according to claim 1, characterized in that the pin-deepener from the end portion facing the power platform is provided with a cavity in which a sealed connector for communication with the module is placed. 8. The universal seismic module according to claim 1, characterized in that the power supply includes four lithium batteries. 9. The universal seismic module according to claim 1, characterized in that the block of geophones consists of three geophones forming a right orthogonal triple with a range of input signals from 10 to 250 Hz and a sensitivity of 27 V / m / s. 10. The universal seismic module according to claim 1, characterized in that four identical input channels are located on the same electronic board and are based on AD1555 \ AD1556 microcircuits manufactured by ANALOG DEVICES. 11. The universal seismic module according to claim 1, characterized in that four containers for lithium batteries are placed on the second electronic board. 12. The universal seismic module according to claim 1, characterized in that the casing and the platform are hermetically connected by the difference of the external pressure and the pressure of the internal volume of the container formed by the casing and the power platform. 13. The universal seismic module according to claim 1, characterized in that one of the electronic boards is equipped with a synchronizer operating from a GPS receiver of the exact time, providing accurate binding of the registration unit to the current time. 14. The universal seismic module according to claim 1, characterized in that its operation comes from a single master crystal oscillator, which uses a highly stable thermostatic generator type M32008 - 8.192M Dahlia with frequency instability of ± 5 ∙ 10 ^-9 manufacturer FSUE ONIIP .