Studies on the Characteristics of Low Frequency Seismic Response from Unconsolidated Gas-Bearing Sand Reservoir
详细信息
- 责任者：Liu Langfeng (Faculty of Geo-Resources and Information ; China University of Petroleum ; Beijing 102249 ; China) ; Cao Siyuan
- 刊名：Oil Geophysical Prospecting
- 出版年：2010
- 卷期：45(6)
- 关键词：砂岩储集层 ; sandstone reservoirs ; 地震勘探 ; seismic exploration
- 页码：p.873-878
- 图表：4 illus., 2 tables, 28 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
Regarding the shallow unconsolidated sand reservoir, the white thin layered model was introduced in this paper, by integrating with porous elastic medium wave theory the theoretical calculation of low frequency seismic reflection characteristics for partially gas bearing reservoir condition and total water-bearing rock condition were conducted, and then OASES wavefield numerical simulation software package was used to conduct numerical simulation analysis for the two conditions. The results show that when the impedance of the unconsolidated sand reservoir is lower than that of the surrounding rocks, the low frequency energy anomaly can be regarded as an important indicator to identify a gas-bearing reservoir.
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