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http://dx.doi.org/10.7582/GGE.2022.25.1.1

Shallow Gas Exploration in the Pohang Basin Transition Zone  

Lee, Donghoon (Marine Geology & Energy Division, KIGAM)
Kim, Byoung-Yeop (Marine Geology & Energy Division, KIGAM)
Kim, Ji-Soo (Department of Earth and Environmental Sciences, Chungbuk Natioanl University)
Jang, Seonghyung (Marine Geology & Energy Division, KIGAM)
Publication Information
Geophysics and Geophysical Exploration / v.25, no.1, 2022 , pp. 1-13 More about this Journal
Abstract
For surveying shallow gas reservoirs in the Pohang basin, we proposed a seismic exploration method applicable to the transition zone in which land and marine areas are connected. We designed the seismic acquisition geometry considering both environments. We installed land nodal receivers on the ground and employed vibroseis and airgun sources in both land and marine areas. For seismic exploration in the transition zone, specific acquisition and processing techniques are required to ensure precise matching of reflectors at the boundary between the onshore and offshore regions. To enhance the continuity of reflection events on the seismic section, we performed amplitude and phase corrections with respect to the source types and applied a static correction. Following these processing steps, we obtained a seismic section showing connected reflectors around the boundary in the transition zone. We anticipate that our proposed seismic exploration method can also be used for fault detection in the transition zone.
Keywords
transition zone; transition survey design; transition zone seismic; shallow gas; Pohang basin;
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Times Cited By KSCI : 3  (Citation Analysis)
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