引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览次   下载 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Improving computation efficiency of full waveform inversion based on multi-step preferred optimization in multi-source domain
GUO Yundong1,2, HUANG Jianping1,2, LI Qingyang1,3, LI Zhenchun1,2, CUI Chao1,2
(1.School of Geosciences in China University of Petroleum (East China), Qingdao 266580, China;2.Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;3.Geophysical Exploration Research Institute of Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China)
Abstract:
Full waveform inversion(FWI) needs large amount of calculation, which is one of the key constraints for production. The calculation of step length with parabolic interpolation method requires at least two addition forward simulations, which directly influences the efficiency of the inversion. In order to improve the efficiency of step-size calculation, this paper combines amulti-source modeling into the step-length calculation. Combining parallel computing and adaptive algorithm,multiple steps can be calculated simultaneously, which then leads to a new acoustic full waveform inversion of multi-step preferred optimization based on multi-source. Applying the new method into Zhongyuan model and Marmousi model, we can draw the conclusions that, firstly, the new method has basically achieved the same inversion precision; and secondly, the computational efficiency has increased by 43.75% and 44.32% for the two models, repsectively.
Key words:  full waveform inversion  parabolic fitting  multi-source modeling  step optimization