Three-dimensional seismic data processing quality monitoring technology

A quality monitoring, three-dimensional seismic technology, applied in the field of petroleum geophysical exploration, can solve problems such as difficulty in achieving the best monitoring effect, difficulty in achieving a comprehensive understanding of data and monitoring data, time-consuming and labor-intensive, and achieve effective and economical quality monitoring. Interference ability, the effect of small amount of calculated data
CN1837859AActive Publication Date: 2006-09-27BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2006-09-27

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Abstract

This invention relates to three-dimensional seismic data processing quality monitoring technology. Selecting time-window and analysis frequency for FFT to obtain frequency-domain conversion result for every channel; taking mean-filter to obtain the statistic excited energy or noise disturbance; plotting all results on plane graph to monitor the 3D excited energy or noise disturbance; taking normalization and autocorrelation to all earthquake channel; summating all autocorrelation statistic result to obtain opposite statistic autocorrelation result; finding out and plotting the zero-crossing of autocorrelation on plane position for monitoring excited wavelet. This invention computes fast with small data quantity and reliable result.
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Description

technical field

[0001] The invention relates to petroleum geophysical exploration technology, in particular to a three-dimensional seismic data processing quality monitoring technology. technical background

[0002] Petroleum seismic exploration is a geophysical exploration method that uses artificial methods to generate seismic waves, investigates underground geological structures and changes in rock formations, and searches for oil and gas fields by studying the propagation of seismic waves in underground rock formations. Seismic exploration can be divided into three major links: seismic data acquisition, seismic data processing, and seismic data interpretation.

[0003] Seismic data acquisition is to generate seismic waves artificially. On land, an explosive source is usually used, and a shallow well is drilled at a selected shot point. The depth of the well is generally 6-30 meters. The amount of explosives is generally 1-25 kg, and the electric detonator is put into th...

Claims

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