ISSN 1004-4140
CN 11-3017/P
魏天罡, 张珩, 李福强, 等. 多尺度曲率在渤海K油田断裂解释中的应用[J]. CT理论与应用研究(中英文), 2024, 33(6): 772-779. DOI: 10.15953/j.ctta.2024.036.
引用本文: 魏天罡, 张珩, 李福强, 等. 多尺度曲率在渤海K油田断裂解释中的应用[J]. CT理论与应用研究(中英文), 2024, 33(6): 772-779. DOI: 10.15953/j.ctta.2024.036.
WEI T G, ZHANG H, LI F Q, et al. Application of Multi-scale Curvature in Fault Interpretation of K Oilfield in Bohai Sea[J]. CT Theory and Applications, 2024, 33(6): 772-779. DOI: 10.15953/j.ctta.2024.036. (in Chinese).
Citation: WEI T G, ZHANG H, LI F Q, et al. Application of Multi-scale Curvature in Fault Interpretation of K Oilfield in Bohai Sea[J]. CT Theory and Applications, 2024, 33(6): 772-779. DOI: 10.15953/j.ctta.2024.036. (in Chinese).

多尺度曲率在渤海K油田断裂解释中的应用

Application of Multi-scale Curvature in Fault Interpretation of K Oilfield in Bohai Sea

  • 摘要: 复杂断裂系统是影响K油田开发的关键问题,常规属性(如相干属性、纹理属性等)在解释断层方面存在局限,特别是微小断层的识别和多尺度复杂断裂系统的成像效果较差,并且容易受噪音干扰。为了解决这些问题,本文采用保边平滑滤波(EPS)技术对地震资料进行预处理,既能有效压制随机噪音,提高信噪比,又保持地震数据的边缘结构信息。在此基础上,利用时频波数域多尺度算子实现多尺度曲率分析。这种组合创新方法在渤海K油田的断裂识别和解释中表现良好,为开发井位的顺利实施提供有力指导,帮助规避风险断层,提高开发效率和成功率。

     

    Abstract: Ascertaining the curvature attributes of fault systems depends on the partial derivative, which is easily disturbed by noise. Therefore, an edge-preserving de-noising filter is used to preprocess seismic data, effectively improving the signal-to-noise ratio and maintaining information on the edge structure. On this basis, multi-scale curvature analysis is realized by using multi-scale operators in a time–frequency–wavenumber domain. This attribute fully considers the complexity of geological structure and fault distribution characteristics. Small-scale curvature attributes can better represent subtle changes in geological structure, which is conducive to avoiding risk faults in the oilfield development phase. Large-scale curvature attributes are conducive to the macro analysis of fault distribution characteristics, which plays an important role in regional exploration. The multi-scale curvature method has been well applied to fault interpretation in the Bohai K Oilfield and has proven beneficial to the drilling of oilfield development wells.

     

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