地质构造约束高斯束层析反演方法与应用

发布时间：2018-03-25 04:21

本文选题：高斯束　切入点：灵敏核函数　出处：《石油物探》2017年05期

【摘要】：高斯束层析介于射线类层析和波动方程类层析之间,兼具了计算效率高和过程稳定的优势,是速度建模的一种重要手段。但是,常规高斯束层析灵敏度矩阵建立在射线的基础上,不能遍历整个模型,求解过程不收敛。为此,建立了高斯束层析反演的完整流程,给出了高斯束层析灵敏核函数的构建方法,并且为了使层析反演过程趋于稳定且快速收敛,提出了将地质构造反射界面的倾角场和反射点的位置信息融入高斯光滑矩阵对高斯束层析矩阵进行正则化的方法。理论模型和实际地震资料测试结果验证了方法的可行性和有效性。
[Abstract]:Gao Si beam chromatography, which is between ray chromatography and wave equation chromatography, has the advantages of high computational efficiency and stable process. It is an important method for velocity modeling. The sensitivity matrix of conventional Gao Si beam chromatography is based on ray, so the whole model can not be traversed and the solution process is not convergent. Therefore, a complete flow chart of Gao Si beam chromatography inversion is established, and the method of constructing a sensitive kernel function of Gao Si beam tomography is given. And in order to make the process of tomographic inversion stable and fast convergence, In this paper, a method of regularizing Gao Si beam tomography matrix by incorporating the dip field and the position information of reflection point of geological structure reflection interface into Gao Si smooth matrix is presented. The theoretical model and the actual seismic data test results verify the method. The feasibility and effectiveness of.
【作者单位】：中国石油化工股份有限公司石油物探技术研究院;中国石油大学(华东)地球科学与技术学院;同济大学海洋与地球科学学院波现象与反演成像研究组;
【基金】：国家科技重大专项(2011ZX05014-001-002)资助~~
【分类号】：P631.4

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