A Method of Oil and Gas Detection Based on Complex Domain Matching Pursuit Algorithm
A technology of matching tracking and oil and gas detection, applied in seismic signal processing and other directions, can solve the problems such as the need and impact of unrealistic production work, achieve fast and efficient oil and gas detection and processing, improve computing efficiency, and achieve the effect of good practical application value
Inactive Publication Date: 2018-02-06
CHINA UNIV OF PETROLEUM (BEIJING) +1
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Problems solved by technology
If the existing method is used for oil and gas detection and processing, it will not be able to meet the needs of actual production work, which will seriously affect the actual work.
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[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. Such as figure 1 As shown, the method includes:
[0047] Step 1. Based on the complex domain matching pursuit algorithm, 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 frequency obtaine...
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The invention discloses an oil and gas detection method based on a complex number domain matching and tracking algorithm, including: step 1, based on a complex number domain matching tracking algorithm, using a variable step size jump search algorithm to search for the best matching scale factor and frequency factor , and then calculate the optimal matching decomposition of the seismic trace; step 2, according to the optimal matching decomposition, combine the Wigner distribution and the modulus calculation of An to obtain the time spectrum; step 3, obtain the sampling points according to the frequency change characteristics of the time spectrum obtained oil and gas monitoring data. The oil and gas detection method based on the complex number field matching and tracking algorithm proposed by the present invention realizes the fast matching and tracking algorithm in the complex number field through the variable step size jump search algorithm and the improved calculation of the time spectrum, and the oil and gas detection method of the present invention can be used to ensure While calculating the accuracy, it can quickly and efficiently perform oil and gas detection and processing, which greatly saves calculation time and has good 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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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)