琼东南盆地深水区频率域油气检测技术研究及应用

刘仕友; 孙万元; 邓勇; 廖键; 汪锐

doi:10.3799/dqkx.2019.087

Volume 44 Issue 8

Aug. 2019

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Liu Shiyou, Sun Wanyuan, Deng Yong, Liao Jian, Wang Rui, 2019. Research and Application of Oil and Gas Detection Technology in Frequency Domain in Deep Water Area of Qiongdongnan Basin. Earth Science, 44(8): 2603-2608. doi: 10.3799/dqkx.2019.087

Citation:

Liu Shiyou, Sun Wanyuan, Deng Yong, Liao Jian, Wang Rui, 2019. Research and Application of Oil and Gas Detection Technology in Frequency Domain in Deep Water Area of Qiongdongnan Basin. Earth Science, 44(8): 2603-2608. doi: 10.3799/dqkx.2019.087

Citation:

Liu Shiyou, Sun Wanyuan, Deng Yong, Liao Jian, Wang Rui, 2019. Research and Application of Oil and Gas Detection Technology in Frequency Domain in Deep Water Area of Qiongdongnan Basin. Earth Science, 44(8): 2603-2608. doi: 10.3799/dqkx.2019.087

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Research and Application of Oil and Gas Detection Technology in Frequency Domain in Deep Water Area of Qiongdongnan Basin

doi: 10.3799/dqkx.2019.087

Zhanjiang Branch Company of CNOOC(China) Ltd., Zhanjiang 524057, China

Received Date: 2019-01-16
Publish Date: 2019-08-15

Abstract

Abstract

With the extension of exploration in Qiongdongnan(QDN) Basin to deep water area,the seismic data amplitude is poorly preserved due to the large variation of water depth and the influence of spherical diffusion compensation,etc.The evaluation of oil and gas in different targets is affected by the difference of burial depth and water depth,and the analogy of amplitude attribute is poor. There are so many limitations in hydrocarbon detection only by bright spots technique.This paper is based on the theory of dual-phase medium.The seismic wave characteristics of oil and gas bearing reservoirs are explored.The strong attenuation of oil and gas reservoirs causes the seismic main frequency from high frequency to low frequency.Time-frequency analysis is using matching pursuit and high resolution Wigner distribution.Through accurate analysis of seismic wave spectrum difference before and after passing through oil and gas reservoirs,and application of main frequency shift characteristic attributes for oil and gas detection is obtained. Good exploration effect in deep water area of QDN Basin is achieved.At the same time,the technique does not depend on logging data and other factors,so it has great application prospects.
- dual-phase medium,
- frequency shift,
- time-frequency analysis,
- deepwater,
- hydrocarbon detection,
- petrolum geology

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References

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Research and Application of Oil and Gas Detection Technology in Frequency Domain in Deep Water Area of Qiongdongnan Basin

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