Multi-component Seismic Data Acquisition and Analysis using Physical Modeling

Lim, Kyoungmin; Shin, Sung Ryul; Chung, Wookeen; Kim, Daechul

doi:10.32390/ksmer.2021.58.4.269

Cited by 1 publication

(1 citation statement)

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“…국외에서 탄성파 축소모형 실험을 활용한 다성분 탐 사 관련 연구는 이방성 매질에서 모드변환된 PS파에 관한 연구 (Dewangan et al, 2006), 매질 균열 밀도에 따른 S파 영향에 관한 연구 (Wei et al, 2014), 돔(dome)을 모사한 지 층모델에서 9 성분 자료를 취득하고 성분 별 특성 분석 연 구 등이 있다 (Ebrom et al, 1989). 국내에서는 탄성파 축소 모형 실험을 활용하여 이방성 매질에서 이방성 특성 분석 연구 (Ha and Shin, 2010;Ha and Shin, 2011), 유체가 존재 하는 지층모델에서 9 성분 탄성파 자료를 취득하고 분석한 연구가 수행되었다 (Lim et al, 2021).…”

Section: 서 론unclassified

Shallow Gas Discrimination of Multicomponent Seismic Data Using Seismic Physical Modeling

Kim¹,

Shin²,

Chung

et al. 2022

J. Korean Soc. Miner. Energy Resour. Eng.

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In this study, multicomponent seismic physical modeling was performed by injecting air with similar shallow gas density and velocity into a geological model with a fault and a channel, and seismic sections and time slices were acquired. To discriminate the shallow gas in the model, a direct hydrocarbon indicator was used and seismic attribute analysis was conducted using the acquired data. The results of the analysis showed a bright spot and seismic wipeout. Through S-wave seismic exploration, shallow gas could be identified from the seismic wipeout, which did not appear in the P-wave seismic data. Moreover, the shape of the channel was confirmed based on the seismic wipeout. In addition, in the complex seismic trace analysis, the maximum amplitude increased in the air-injected channel, and a low-frequency shadow occurred due to the attenuation of high-frequency energy due to the shallow gas.

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