| 摘要: |
| 将渤海某油田最新采集的二维高分辨率资料处理解释后, 结合区域地球物理及地质概况, 利用地震相分析、波阻抗反演、井(孔)震标定等深层油气勘探的成熟技术, 系统研究了各类海底浅层地质灾害因素的成因、特征、危害及展布规律, 总结了一套完整的利用高分辨率地震识别海底浅层地质灾害的技术方法。结果表明, 浅层断裂、浅层气和埋藏古河道是研究区海底浅层发育的主要地质灾害因素,通过刻画不同期次地质灾害因素的类型及其分布范围, 为今后该油田海上施工提供了可靠的工程地质调查成果。因此, 高分辨率地震技术能够很好地应用于海底浅层地质灾害的识别。 |
| 关键词: 高分辨率地震 地质灾害识别 浅层断裂 浅层气 埋藏古河道 |
| DOI：10.11759/hykx20130422003 |
| 分类号: |
| 基金项目:“十二五”国家科技重大专项(2011ZX05023-006) |
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| High resolution identification of shallow geological seismic in seafloor |
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| Abstract: |
| Herein, the causes, characteristics, hazards and distribution rules of various shallow seabed geological hazards in an oilfield of the Bohai Sea have been studied by using a series of proven techniques for deep-strata hydrocarbon exploration including seismic facies analysis, impedance inversion and well (hole) seismic calibration after the processing and interpretation of the newly acquired two-dimensional high-resolution seismic data, combined with regional geophysical and geological overview. A complete set of identification techniques for shallow seabed geological hazards has been set up. The results show that the shallow faults, shallow gas and buried paleochannel are the major geological hazard factors in shallow seafloor of research area. A reliable engineering geological survey results for the future offshore construction in the oil field were provided by tracking and mapping types and distribution of different geological hazards. Therefore, the high-resolution seismic technology can be well used to identify shallow seabed geological hazards. |
| Key words: high-resolution seismic data identification of geological hazards shallow faults shallow gas buried paleochannel |
