| 地层格架正则化约束下的二维立体层析反演 |
| |
| 引用本文： | 张力起,杨锴,邢逢源,李振伟,倪瑶.地层格架正则化约束下的二维立体层析反演[J].地球物理学报,2019,62(2):634-647. |
| |
| 作者姓名： | 张力起 杨锴 邢逢源 李振伟 倪瑶 |
| |
| 作者单位： | 1.同济大学海洋地质国家重点实验室, 上海 200092;2.中石化上海海洋油气分公司, 上海 200120;3.中石化石油物探技术研究院, 南京 210014 |
| |
| 基金项目： | 国家自然科学基金面上项目（41630964，41574098）和国家科技重大专项（2016ZX05026-001-03）联合资助. |
| |
| 摘 要： | 通过把地层格架信息作用于立体层析Fréchet导数矩阵,使得更新后的速度模型呈现出符合地质规律的块状特征.地层格架信息基于立体层析反演中得到的反射点位置进行非规则B样条插值拟合得到,因此在反演中它将会随着反射点位置的更新自然得到更新.与前人提出的保边缘层析算法或多层立体层析算法相比,本文提出的地层格架正则化无需引入混合正则化项或定义某种复杂的混合速度格式,更为直接也更容易实现.理论和实际数据算例证实了该正则化技巧的稳健性和可靠性,能够得到与实际地质构造特征更为一致的地质一致性反演结果.
|
| 关 键 词： | 地层格架约束下的立体层析 射线扰动理论 非规则B样条 立体层析Fréchet导数矩阵 |
| 收稿时间： | 2017-09-04 |
2D stereo-tomography inversion constrained by regularization of stratum framework |
| |
| ZHANG LiQi,YANG Kai,XING FengYuan,LI ZhenWei,NI Yao.2D stereo-tomography inversion constrained by regularization of stratum framework[J].Chinese Journal of Geophysics,2019,62(2):634-647. |
| |
| Authors: | ZHANG LiQi YANG Kai XING FengYuan LI ZhenWei NI Yao |
| |
| Institution: | 1.State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China;2.Sinopec Shanghai Offshore Oil and Gas Company, Shanghai 200120, China;3.Sinopec Geophysical Research Institute, Nanjing 210014, China |
| |
| Abstract: | This paper presents a regularization technique by incorporating the blocky geological boundary information into the Fréchet derivatives matrix of the stereo-tomography inversion. Using this method, the updated velocity model can automatically exhibit a blocky feature. The geological boundary information is updated based on the updated reflector positions, which can be provided by conventional stereo-tomography itself. Compared with the conventional tomography with mixed norms or the multi-layer stereo-tomography, the presented regularization technique does not depend on a hybrid regularization terms or a hybrid velocity format. It is more straightforward and easier to implement. The synthetic data example and the field seismic data case demonstrate the robustness of this method and its inversion results are more consistent with real geological structure. |
| |
| Keywords: | Stereo-tomography constrained by geological frames Ray perturbation theory B-spline fitting Stereo-tomographic Fréchet derivative matrix |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
