石油物探2017，Vol.56Issue(5)：707-717,11.DOI:10.3969/j.issn.1000-1441.2017.05.011
地质构造约束高斯束层析反演方法与应用
A method of geological structure constrained tomographic inversion based on Gaussian beam and its application
摘要
Abstract
Gaussian beam tomography is a compromise method between ray-based tomography and wave equation tomography,which has advantages of high computational efficiency and robust processing ability.However,the sensitivity matrix of the conventional Gaussian beam tomography is built on ray theory.It still cannot illuminate the whole model and the solver of Gaussian beam tomography maybe non-convergent.We have established a complete process of tomographic inversion based on Gaussian beam and proposed a construction method for sensitivity kernel of the Gaussian beam tomography.In order to guarantee stability,and accel erate the convergence of tomographic inversion process,we proposed to merge the dip field of the reflection interface and the position information of the reflection point into Gaussian smoothing matrix,which is used for the regularization of Gaussian beam tomographic matrix.From the tests of theoretical model and seismic field data,the geological structure constraints can not only reduce the uncertainty of the inversion and make the inversion process stable,but also recover more geological details,thus verifying its feasibility and effectiveness.关键词
高斯束/灵敏核函数/地层倾角/地质构造约束/层析反演/正则化Key words
Gaussian beam/sensitivity kernel/formation dip/geological structure constraint/tomographic inversion/regularization分类
天文与地球科学引用本文复制引用
万弘,杨勤勇,蔡杰雄,倪瑶,李辉..地质构造约束高斯束层析反演方法与应用[J].石油物探,2017,56(5):707-717,11.基金项目
国家科技重大专项(2011ZX05014-001-002)资助.This research is financially supported by the National Science and Technology Major Project of China (Grant No.2011ZX05014-001-002). （2011ZX05014-001-002）
