Hydrocarbon detection method based on complex domain matching pursuit algorithm

A technology of matching tracking and oil and gas detection, applied in the direction of seismic signal processing, etc., can solve the problems of unrealistic production work needs and influences, achieve fast and efficient oil and gas detection and processing, improve computing efficiency, and save computing time

Inactive Publication Date: 2016-03-09
CHINA UNIV OF PETROLEUM (BEIJING)
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If the existing method is used for oil and gas detection and processing, it will not be abl

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  • Hydrocarbon detection method based on complex domain matching pursuit algorithm
  • Hydrocarbon detection method based on complex domain matching pursuit algorithm
  • Hydrocarbon detection method based on complex domain matching pursuit algorithm

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Embodiment Construction

[0045] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0046] figure 1 It is a flow chart of an oil and gas detection method based on a complex domain matching pursuit algorithm according to an embodiment of the present invention. like figure 1 As shown, the method includes:

[0047] Step 1. Based on the matching pursuit algorithm in the complex number field, use the variable step size jump search algorithm to search for the best matching scale factor and frequency factor, and then calculate the best matching decomposition of the seismic trace;

[0048] Step 2, according to the best matching decomposition, combining Wigner distribution and A n The time spectrum is obtained by calculating the modulus value of ;

[0049] Step 3, obtaining the oil and gas monitoring data of the sampling point according to the frequen...

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Abstract

The invention discloses a hydrocarbon detection method based on a complex domain matching pursuit algorithm. The hydrocarbon detection method comprises a first step of based on the complex domain matching pursuit algorithm, searching for an optimal matching scale factor and a frequency factor by using a variable-step jumping search algorithm, and then calculating to obtain optimal matching decomposition of a seismic channel; a second step of based on the optimal matching decomposition, calculating to obtain a time-frequency spectrum by combining Wigner distribution and an An module value; and a third step of obtaining oil and gas monitoring data of a sampling point based on frequency variation features of the obtained time-frequency spectrum. The invention achieves the complex domain quick matching pursuit algorithm through the variable-step jumping search algorithm and an improvement algorithm of the time-frequency spectrum, the hydrocarbon detection method can be used for quickly and efficiently performing hydrocarbon detection processing while ensuring the calculation accuracy, thereby greatly saving the calculation time, and the invention has a high practical application value.

Description

technical field [0001] The invention relates to the field of seismic oil and gas detection, in particular to an oil and gas detection method based on complex domain matching and tracking algorithm. Background technique [0002] Seismic oil and gas detection technology is playing an increasingly important role in oil and gas exploration, and technologies related to seismic oil and gas detection such as analysis, extraction, and calibration have been developed rapidly. However, the AVO analysis and pre-stack multi-parameter inversion technology based on the variation of reflection amplitude with offset to predict oil and gas have many problems such as large amount of calculation, poor stability and noise interference, and the method needs to be improved. Using the frequency of seismic data and other relevant information to judge oil and gas has a long history, such as: M.A.Biot [1-2] (1956) preliminarily analyzed the absorption and attenuation mechanism of seismic waves based...

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/30
Inventor 黄捍东董月霞刘洪昌曾靖
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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