Combined gravity-magnetism-electric-seismic combined split-body modeling method in the piedmont zone
A modeling method and piedmont technology, applied in seismic signal processing, electrical digital data processing, instruments, etc., can solve problems such as modeling and structural interpretation difficulties, and achieve high reliability results
Active Publication Date: 2018-04-13
CHINA PETROLEUM & CHEM CORP +1
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Faced with such complex exploration targets and major problems, it is very difficult to rely solely on seismic methods for geological modeling and structural interpretation of the piedmont zone, and other effective methods must be used as necessary support
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[0054] The detailed description and technical content of the present invention are described below in conjunction with the accompanying drawings. However, the accompanying drawings are only for reference and description, and are not intended to limit the present invention.
[0055] like figure 1 As shown in the figure, the combined modelling method of gravity, magneto-electric seismology in the piedmont belt includes the following steps:
[0056] 1) Establish rock and stratigraphic physical property models. The method is as follows: first, the rock physical property model is obtained through the field sampling data, and then the formation physical property model is established by using the logging data and the drilling layered data.
[0057] 2) Combine seismic data with gravity and magnetic data to divide zones horizontally. The combination of the seismic data and the gravity and magnetic data includes: using magnetic data to overcome the problem of insufficient seismic data a...
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The invention discloses a combined split-body modeling method of gravity, magnetism, electric shock and mountain piedmont. The technical scheme adopted in the present invention is: establish rock and stratum physical property model; Seismic data is combined with gravity and magnetic data, zone is divided horizontally; Seismic data is combined with electrical data, and structural system is divided vertically; Establish a structural model; interactive interpretation of gravity, magnetism, electric and seismic to verify the rationality of the structural model, and obtain the final structural model by repeatedly modifying the structural model and interpretation scheme. This method realizes the joint modeling of gravity, magnetic force, seismic and electrical methods, which is more reliable than the structural model established only by seismic data, and can be widely used in comprehensive interpretation of deep layers, igneous rock development areas and piedmont zones.
Description
technical field [0001] The invention relates to the technical field of geological comprehensive interpretation of geophysical data in petroleum exploration, in particular to a combined split modeling method of gravity, magnetism, and electro-seismic in a piedmont belt. Background technique [0002] The traditional point of view is that gravity and magnetoelectricity can only solve the geological problems of early regional exploration, and its role in oil and gas discovery in the middle and later stages of exploration is very limited, and it is believed that its accuracy is difficult to match with seismic. In recent years, with the great improvement of gravity and magnetoelectric acquisition accuracy and the rapid development of processing and interpretation methods, great breakthroughs have been made in the comprehensive application of gravity and magnetoelectricity, and the combination with earthquakes has also made great progress, effectively broadening the The application...
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IPC IPC(8): G01V1/28G01V1/30G06F19/00
Inventor 陈学国相鹏谭绍泉胡加山郝志伟时秀朋李竹强郭涛于会臻李云平李守济王有涛王月蕾
Owner CHINA PETROLEUM & CHEM CORP