The paper proposes to exclude the active source of the seismic field from the measurement scheme, which is often a massive truck with equipment installed on it, which in its turn makes it difficult and increases the cost of field-work. The proposed passive measurement installation allows the detection of hydrocarbon deposits by registering the natural fields of the Earth. All measurements can be carried out by one person due to the use of magnetic antennas. A method of field measurements by means of such installation, as well as measurement data on a real gas condensate field are presented.
The article presents the scientific and methodological approaches to the principles of construction and justification of the characteristics of a new sample of the SDV radio channel in underground mines to assess the required sensitivity of the receiving equipment and the maximum range of the channel. Based on the estimates obtained, as well as using radio engineering methods for calculating communication systems, the principles of noise reduction are formulated, coding and modulation systems are selected and justified. Mathematical modeling of noise reduction processes was carried out and algorithms and programs for the receiving and transmitting paths of a wireless data transmission system through rocks were developed. The paper presents the results of field observations of noise recorded in a working mine for the extraction of non-ferrous metals.
Despite the development of alternative energy, hydrocarbon raw materials is one of the most important energy resources in the world. The discovery of new deposits today is an urgent task. Long-term prospects for the development of seismic exploration are associated with the development of the continental shelf, in particular the Arctic. Also, a large raw material potential is expected from poorly studied territories located on the Arctic coast of the Russian Federation, reef zones of the Persian Gulf states, and in the transit and shallow waters (at a depth of up to 10 meters).The article discusses the theoretical aspects of the excitation of seismic waves in the water, addresses the problems of instrumental implementation of a new source of seismic vibrations that can work: in the water area, in tidal and coastal zones, i.e. produce continuous seismic profiling from the water area to the land. The scientific substantiation of the developed seismic source (SS) design is given.
The paper examines the theoretical aspects of the excitation of seismic waves in the aquatic environment, addresses the problems of instrumental implementation of a fundamentally new source of seismic vibrations that can work in the waters, in tidal and coastal zones, i.e. produce continuous seismic profiling from the water area to the land. The scientific substantiation of the developed SI design is given. The effectiveness of two polar excitation of the aquatic environment is evaluated in comparison with the water electromagnetic pulse sources of the Yenisei series. The comparative analysis results of SR experimental model effectiveness with VEM-50 production model of the “Yenisei” model range is given on the basis of experimental data obtained at the geophysical well of the testing and testing ground of the Siberian Federal University.
This article discusses the development of twochannel sensitive sensors for recording seismic vibrations. The influence of the instability of the element base in the implementation of sensor data using analog amplifiers and filters is considered. It is shown that the effect of this instability can lead to the formation of measurement errors. Even a change in the cutoff frequency of several hertz leads to the formation of an error of the order of 10-15%. The characteristics of digital filters that can be used in these sensors are given, which, using modern microcontrollers of the ARM architecture, will allow not only filtering in real time, but also perform mathematical processing of received signals.
The paper considers the issues of automation and improving the performance of the field work by the seismic electric method. It is shown that the measurement scheme used today is not optimal. It leads to a long-term deployment of the measuring installation, as well as the inability to use it in difficult geological and climatic conditions. The authors of the paper propose to use special magnetic antennas for recording the electromagnetic field, which eliminate all the drawbacks of grounded electric dipoles. It is shown that if simultaneously registering the various components of the electromagnetic field, it is possible to estimate the depth of the productive layers. The data of observations of seismic electrical effects in the gas-condensate field for various x, y, z components are given.
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