引用本文:
【打印本页】   【HTML】   【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
基于混叠数据多步长优化提高全波形反演的运算效率
国运东1,2,黄建平1,2,李庆洋1,3,李振春1,2,崔超1,2
(1.中国石油大学(华东)地球科学与技术学院,山东青岛 266580;2.海洋国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛 266071;3.中国石化中原油田分公司物探研究院,河南濮阳 457001)
摘要:
计算效率在一定程度上制约了全波形反演(FWI)技术的工业化应用,其中,步长的计算是影响计算效率的重要因素。常用的抛物插值类方法求取步长需要两次或多次正演计算,效率较低。在步长计算过程中引入混叠数据反演思想,采用多震源同时正演并直接基于混叠数据计算一次步长,较大幅度地减少计算步长的运行时间。此外,基于多节点并行同时计算多个试探步长,进一步提高计算效率和计算精度。将本文方法应用于典型中原模型和国际标准Marmousi模型试算,实验结果表明:本文方法与常规方法在反演精度上基本一致,但大幅度提高了运行效率,其中中原模型的运算效率提高43.75%,Marmousi模型的运行效率提高44.32%。
关键词:  全波形反演  抛物拟合  多震源正演  步长优化
DOI:10.3969/j.issn.1673-5005.2019.02.005
分类号::P 631.4
文献标识码:A
基金项目:山东省重大创新工程(2017CXGC1608,7CXGC1602);中国科学院战略性先导科技专项( XDA14010303);国际合作重点项目(41720104006);国家油气重大专项(2016ZX05006-004,6ZX05014001,6ZX05002); 中原油田科技工程项目(2018XQ01-13)
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
版权所有 中国石油大学学报(自然科学版)编辑部 Copyright©2008 All Rights Reserved
主管单位:中华人民共和国教育部 主办单位:中国石油大学(华东)
地址: 青岛市黄岛区长江西路66号中国石油大学期刊社 邮编:266580 电话:0532-86983553 E-mail: journal@upc.edu.cn
本系统由:北京勤云科技发展有限公司设计