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| Steerable Pyramid分解在储层断裂检测中的应用 | |
| 引用本文： | 林春,王绪本,刘四兵,刘力辉.Steerable Pyramid分解在储层断裂检测中的应用[J].地球物理学进展,2012,27(1):279-287. |
| 作者姓名： | 林春 王绪本 刘四兵 刘力辉 |
| 作者单位： | 1. 成都理工大学地球探测与信息技术教育部重点实验室,成都,610059 2. 成都理工大学地球探测与信息技术教育部重点实验室,成都610059;中石化西南油气分公司勘探开发研究院,成都610081 3. 成都理工大学地球探测与信息技术教育部重点实验室,成都610059;北京诺克斯达石油科技有限公司,北京100192 |
| 摘 要： | 在隐蔽油气藏勘探中,正确刻画储层断裂对于油气勘探和开发都有着至关重要的作用.储层断裂在地震数据中表现为边缘特征.但现今多尺度边缘检测的基本理论和方法都有其本身的局限性.本文详细阐述了Steerable Pyramid分解用于储层断裂检测的基本原理和方法.输入的三维地震切片经过Steerable Pyramid分解后,不仅可以分析不同尺度不同方向上断裂的特征及走向,还可以通过重构得到经S函数控制的断裂信息,该断裂信息不仅仅是断裂的边缘检测,而是增强的断裂本身.将该算法应用于实际地震切片的断裂检测,得到了清晰的断裂信息,完整细致地展现了这些地质类型的特征,为构造解释、地震相表征及储层预测提供了有用信息. |
| 关 键 词： | Steerable Pyramid分解 极坐标滤波器 基本方向滤波器 断裂检测 |
Application of Steerable Pyramid in reservoir faults imaging |
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| LIN Chun , WANG Xu-ben , LIU Si-bing , LIU Li-hui.Application of Steerable Pyramid in reservoir faults imaging[J].Progress in Geophysics,2012,27(1):279-287. | |
| Authors: | LIN Chun WANG Xu-ben LIU Si-bing LIU Li-hui |
| Institution: | 1,3(1.Chengdu University of Technology KLGIT,Chengdu 610059,China; 2.Institute of Petroleum Exploration and Development;Southwest Petroleum Company;SINOPEC,Chengdu 610081,China; 3.Chinarockstar Petroleum Science and Technology Ltd.,Beijing 100192,China) |
| Abstract: | At present,domestic oil exploration has transferred from structural hydrocarbon reservoir to subtle reservoir,and the requirement of exploratory technique for subtle reservoir is urgent.Some subtle reservoir such as fractured hydrocarbon reservoir of marine carbonate and lithologic hydrocarbon reservoir of clasolite expresses high anisotropic and directional in horizontal,so that the reservoir evaluation is difficult and conventional technology is very difficult to identify,which need some key seismic reservoir prediction technology to detect and characterize.And in the process of reservoir prediction,the recognition and detection of faults is extremely important.The character of faults in seismic data is marginal,however,multi-scale and multi-direction detection technology for faults is in the stage of exploration at home and abroad.In the paper,the basic principle and parametric selection of decomposition and construction of Steerable Pyramid(It is used to detect faults) are introduced in detail.We can analyze the characters and distribution of faults in different scales and directions after decomposition of Steerable Pyramid,which is significance to detect and stress the geologic body with definite distribution.In the process of Steerable Pyramid construction,the space smoothing is used to obtain a stable and uniform estimated direction and the function S is adopted to enhancement faults whose linear characteristics are enhanced,and we can get faults in itself through the dominance of function S.But the effect is susceptible to parameters,such as smoothing parameter and k,T,which are selected based on the characters of inputting figure.It is proved that the application of Steerable Pyramid to detect faults is successful for we obtain clear faults when the Steerable Pyramid decomposition is applied in faults detection of real seismic slice.It reveals characteristic of faults completely and meticulously,and provides useful information for structure elucidation,seismic facies characterization and reservoir pre-determination.Noteworthy,it requires noise decaying before faults detection,for whether random noise or correlated noise can decrease accuracy of direction estimated. |
| Keywords: | Steerable Pyramid decomposition radial filter basis filter faults detection |
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