深水地震资料速度分析方法与应用

基金项目:

国家重大科技专项子专题"莺琼盆地高温高压区高精度地震资料采集处理技术"(2011ZX05000023004001)

详细信息

DEEPWATER SEISMIC VELOCITY ANALYSIS AND APPLICATION

1 CNOOC Energy Technology-Drilling and Production Company, Development and Prospecting Geophysical Institute, Zhanjiang 524057, Guangdong, China;
2 Insitute of Geophsics and Geomatics, China University of Geosciences(Wuhan), Wuhan 430074, China

摘要: 深水地震资料受水深、海况、地貌、地质情况以及采集等因素的影响,速度分析同时也受各向异性、水深变化、噪音干扰严重、照明分布不均等特征的影响,因此,常规速度分析方法不能满足深水地震资料速度分析的需要。针对这些问题,采取运用高密各向异性双谱速度的分析方法拾取高密度速度和各向异性参数。该方法应用于南海多个深水区地震资料速度分析,取得了良好的应用效果。
- 深水 /
- 速度分析 /
- 各向异性 /
- 双谱分析
Abstract: Deepwater seismic survey is influenced by water depth, sea conditions, topography, geological conditions, acquisition method and other factors. As known, the velocity analysis is interfered by such features as anisotropy, sensitive speed changes, serious noise interference and uneven distribution of lighting. Conventional method of velocity analysis is not sufficient to meet the requirement of deepwater seismic data velocity analysis. To solve these problems, the authors adopted the method of high-density anisotropic bispectrum velocity analysis to pick up the high-density speed and the anisotropic parameters. This method has been applied to the South China Sea for deepwater seismic data velocity analysis, and proven to be effective.
- deepwater /
- velocity analysis /
- anisotropy /
- bispectrum velocity analysis

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