Earthquake forward modelling method based on rock outcrop radar detection

A forward modeling and rock technology, applied in the field of geophysical exploration, can solve problems such as research scale constraints, large-scale concepts are not recommended, and achieve the effect of avoiding defects

Inactive Publication Date: 2016-01-27
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0008] Although GPR and artificial seismic reflection data reflect different characteristic parameters of the formation, both are reflection information of the formation interface, and the detection principles are similar and comparable. Therefore, in the geological interpretation method of GPR data , the interpretation method and conceptual system of seismic stratigraphy have been accepted by many scholars. Adrian Neal (2004

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Embodiment

[0031] The internal structure of the meandering river point bar is complex, and the geological interpretation of seismic data is difficult. In the sedimentary microfacies interpretation of the Neogene meandering river point bar in the TigerShoal area of ​​the Gulf of Mexico, the lack of guidance from the seismic forward modeling results of the meandering river sedimentary strata is difficult to use Seismic data identify the geological structure within point bar sedimentary microfacies. Adopt the method of the present invention, select the meandering river rock outcrop with the same geological conditions and similar geological characteristics, use the rock outcrop radar detection method to replace the seismic forward modeling based on numerical simulation, and obtain the seismic data of the meandering river point bar sedimentary body at different frequencies The reflection features in the meandering river guide the seismic interpretation of the internal structure of the meanderi...

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Abstract

The invention relates to an earthquake forward modelling method based on rock outcrop radar detection. The method includes the following steps: selecting a rock outcrop profile and setting a radar detection measuring line; performing rock outcrop section measurement and geological description; respectively selecting 100MHz and 400MHz radar antennas to continuously detect the rock outcrop section along the measuring line and obtaining the radar section data detected by the antenna at the corresponding frequency; performing data imaging processing on the acquired radar data; stimulating the earthquake forward modelling result of the described rock outcrop section by means of the radar data imaging processing result; and comparing the low-frequency and high-frequency earthquake forward modelling results to obtain the respective earthquake reflection characteristics of the same rock outcrop geologic body in the high-frequency and low-frequency earthquake data and to guide the geological interpretation of earthquake data of an underground reservoir. A typical rock outcrop is taken as a geological model, so that the defects of geological model simplification and idealization in the earthquake reflection forward modelling simulation method based on value simulation and physical model physical simulation can be overcome.

Description

technical field [0001] The invention belongs to the field of geophysical exploration, and in particular relates to a stratum seismic reflection forward modeling method based on rock outcrop radar detection, which utilizes radar to detect the internal structure of rock outcrop and its geophysical reflection information, and simulates the stratum seismic reflection result. Background technique [0002] Seismic reflection forward modeling reveals the seismic reflection characteristics of strata under different geological conditions, provides a theoretical basis and guidance for seismic data processing and geological interpretation, and is an important basis for seismic data processing and seismic geological interpretation under complex geological conditions. [0003] Seismic reflection forward modeling is produced and developed along with seismic data processing and interpretation. After decades of development, two different methods of seismic numerical simulation forward modeli...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 张涛张宪国林承焰董春梅张守秀江艳平
Owner SHANDONG UNIV OF SCI & TECH
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