全局优化模拟退火地震反演技术

Globally Optimized Simulated Annealing Algorithm Seismic Inversion Technique

陈长河¹,周　杰²,周胜利²,潘一览²

Chen Changhe, Zhou Jie, Zhou Shengli

1. 中原油田分公司勘探事业部,2. 中原油田分公司勘探开发科学研究院

Oilfield Exploration Department , Zhongyuan Oilfield Company , SINOPEC, Henan 457001 , P. R. China

基于快速模拟退火算法进行全局优化的多道反演技术是模拟金属冷凝过程中晶体自动有序排列的理论,对准备反演的模型数据作大量的、随机的参数修改(扰动) ,每次修改后,比较反演结果与实际地震资料的误差,选择误差最小的一些因素指导后来的修改(扰动量) ,并逐步“降温”,使扰动量逐步缩小范围,最终找出最佳的模型答案,即为反演结果。这种反演技术具有抗噪能力强、分辨率高、忠实地震资料等特点,可以有效的解决多解性问题,达到全局优化,是一种真正的多道、快速、真三维地震反演技术。

ISIS 3D seismic inversion is a comprehensive software pasckage that performs a globally optimized ,multi- trace inversion of post - stack ,migrated 3D data. The inversion algorithm is based on a version of the simulated annealing algorithm. We comparised theoretical seismic trace with actual seismic trace by residual error and corrected the prior model until a low residual error is obtained. Such technology possess the characteristic of strong damping of noise , and improved resolving power , and trust seismic data. Such inversion is a globally optimized ,true 3D seismic inversion technology.