基于Q補(bǔ)償?shù)酿椊橘|(zhì)逆時(shí)偏移成像研究
[Abstract]:Migration imaging is a key link in seismic exploration. Reverse-time migration imaging technology can adapt to complex velocity model and its imaging results are more accurate. It has become one of the hot topics in seismic exploration. Viscoelastic model can more accurately characterize the seismic wave propagation process in actual underground media, and reverse-time migration method considering the absorption and attenuation law of viscoelastic media and wave field propagation characteristics can guide. Seismic exploration data processing and interpretation help to solve the complex problems faced by oil and gas exploration and improve exploration accuracy. Based on this paper, the inverse time migration imaging of viscoelastic media based on Q compensation is studied. The attenuation effect of viscoelastic media is processed in the process of inverse time migration wave field continuation, and the attenuation and phase distortion are corrected accurately. The main research contents and achievements are as follows: 1) Based on the more accurate constant Q viscoelastic model in seismic exploration frequency band, the wave equation of fractional order time-derivative viscoelastic medium is deduced, and the fractional order time-derivative is converted to spatial derivative by Laplace operator, and the pseudospectral constant Q is obtained. The forward numerical simulation of wave equation in viscoelastic media using pseudo-spectral method is realized by using Laplace fractional wave field continuation operator in the model.The viscoelastic wave equation based on constant Q model can simulate the attenuation of phase delay amplitude in seismic viscoelastic media and the migration of seismic records affected by strong viscoelastic attenuation. The problem of multi-component wavefield mixing and weak attenuated signal of effective reflection wave is existed. 2) The elastic wave inverse migration imaging method is studied to deal with the problem of multi-component wavefield mixing of viscoelastic seismic data. In low-frequency noise, an elastic wave inverse migration method based on first-order velocity-stress energy norm imaging condition is developed, and the intermediate strain component is introduced. A new method for updating the wave field components of first-order velocity-stress equation inverse migration based on energy norm imaging condition is developed. High-resolution elastic wave inverse migration results. 3) The idea of constructing wave field continuation operator for compensating viscoelastic inverse migration is developed in this paper. The wave equation of viscoelastic medium decoupled by phase and amplitude attenuation is modified, and the phase-amplitude variation wave-like field continuation operator is reconstructed. The reconstructed phase-corrected wave field continuation process of viscoelastic operator can be independent. The phase delay correction and amplitude attenuation compensation operators can be combined to form a flexible viscoelastic wave field continuation technique sequence. 4) A Q-compensated viscoelastic inverse time migration framework is proposed to solve the problem. Viscoelastic seismic migration requires correction of phase amplitude.A compensated viscoelastic inverse-time migration method is developed.A strategy of compensating viscoelastic inverse-time migration based on mutual imaging conditions and source normalization imaging conditions is proposed.The phase attenuation amplitude wave field viscoelastic operator is used for mutual imaging conditions and source normalization imaging conditions are used only. The phase delay and phase delay amplitude attenuation viscoelastic operator are used to compensate viscoelastic inverse time migration imaging algorithm, and the compensation viscoelastic inverse time migration technique for P-S wave field separation is developed. The main innovations in this paper are as follows: 1) An energy norm imaging conditional elastic wave inverse migration method for the first-order velocity-stress equation is developed, which can suppress the low-frequency noise effectively during the inverse migration of elastic wave and obtain better imaging effect. 2) The wave field continuation operator for the viscoelastic wave equation with phase and amplitude variations is constructed. The constructed operator can be used independently to compensate for the decoupling correction of phase and amplitude in forward and backward propagation wave field continuation of viscoelastic inverse time migration. The problem that ordinary wave field continuation operators are difficult to compensate for phase and amplitude in viscoelastic wave field is solved. The multi-component complexity and viscous attenuation effect of viscoelastic wave field can correct and compensate the phase and amplitude of seismic wave accurately in the process of wave field continuation, reduce the influence of inaccurate migration result caused by the attenuation effect of viscoelastic medium, and obtain higher resolution migration result.
【學(xué)位授予單位】:中國(guó)地質(zhì)大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位授予年份】:2017
【分類號(hào)】:P631.4
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 薛桂霞,鄧世坤,劉秀娟;逆時(shí)偏移在探地雷達(dá)信號(hào)處理中的應(yīng)用[J];煤田地質(zhì)與勘探;2004年01期
2 楊勤勇;段心標(biāo);;逆時(shí)偏移技術(shù)發(fā)展現(xiàn)狀與趨勢(shì)[J];石油物探;2010年01期
3 張春燕;李振春;孫小東;;逆時(shí)偏移方法技術(shù)進(jìn)展綜述[J];勘探地球物理進(jìn)展;2010年05期
4 滕厚華;許衛(wèi)華;于曉莉;尚新民;賀紅蕾;;無(wú)反射遞推算法疊后逆時(shí)偏移的研究與應(yīng)用[J];油氣地球物理;2011年04期
5 許璐;孟小紅;劉國(guó)峰;;逆時(shí)偏移去噪方法研究進(jìn)展[J];地球物理學(xué)進(jìn)展;2012年04期
6 王童奎;李瑩;郭愛(ài)華;石文武;楊曉利;孫明;潘歡;;逆時(shí)偏移技術(shù)在南堡1號(hào)構(gòu)造中的應(yīng)用研究[J];地球物理學(xué)進(jìn)展;2012年06期
7 康智清;劉恩;司杰戈;陳康;;逆時(shí)偏移剖面假象產(chǎn)生機(jī)制及其消除方法[J];石油天然氣學(xué)報(bào);2013年01期
8 胡明順;潘冬明;董守華;金紅娣;趙新;;基于散射理論的逆時(shí)偏移隨機(jī)邊界構(gòu)建策略優(yōu)化分析[J];地球物理學(xué)進(jìn)展;2013年04期
9 張叔倫;陳靜;張關(guān)泉;;逆時(shí)偏移的方向?qū)?shù)算法[J];石油地球物理勘探;1991年06期
10 Ruey-Chyuan Shih;A.R.Levander;陳炳文;;層剝離逆時(shí)偏移[J];國(guó)外油氣勘探;1995年04期
相關(guān)會(huì)議論文 前10條
1 杜啟振;秦童;;逆時(shí)偏移最佳匹配層邊界實(shí)現(xiàn)[A];中國(guó)地球物理·2009[C];2009年
2 陳康;;逆時(shí)偏移剖面的波數(shù)域分析及高階拉普拉斯濾波算法的實(shí)現(xiàn)[A];“地球·資源”全國(guó)博士生學(xué)術(shù)論壇會(huì)議論文摘要集[C];2011年
3 龍?jiān)?韓立國(guó);韓利;鄧武斌;;單程波逆時(shí)偏移[A];中國(guó)地球物理學(xué)會(huì)第二十七屆年會(huì)論文集[C];2011年
4 李慶洋;李振春;黃建平;;基于雙變算法的精細(xì)逆時(shí)偏移成像[A];中國(guó)地球物理2013——第二十二專題論文集[C];2013年
5 曹曉莉;黃建平;李振春;;最小二乘逆時(shí)偏移高精度成像方法研究[A];中國(guó)地球物理2013——第二十二專題論文集[C];2013年
6 許璐;孟小紅;劉國(guó)峰;;成像后壓制逆時(shí)偏移噪聲[A];中國(guó)地球物理學(xué)會(huì)第二十七屆年會(huì)論文集[C];2011年
7 薛霆哠;張書(shū)杰;;逆時(shí)偏移中坡印廷向量濾波的改進(jìn)方法[A];中國(guó)地球物理2013——第二十二專題論文集[C];2013年
8 楊仁虎;毛偉健;凌云;;逆時(shí)偏移儲(chǔ)層成像波形校正研究[A];中國(guó)地球物理2013——第二十專題論文集[C];2013年
9 曾同生;李振春;;基于疊前逆時(shí)偏移的速度分析方法研究[A];中國(guó)地球物理學(xué)會(huì)第二十七屆年會(huì)論文集[C];2011年
10 胡昊;劉伊克;王一博;;地震疊前逆時(shí)偏移不同邊界處理方式研究[A];中國(guó)地球物理學(xué)會(huì)第二十七屆年會(huì)論文集[C];2011年
相關(guān)重要報(bào)紙文章 前2條
1 王躍;物探院逆時(shí)偏移成像技術(shù)躋身國(guó)際前列[N];中國(guó)石化報(bào);2013年
2 本報(bào)記者 劉洪宇;石油HPC走向“平衡計(jì)算”[N];中國(guó)計(jì)算機(jī)報(bào);2011年
相關(guān)博士學(xué)位論文 前10條
1 蔡志成;基于Q補(bǔ)償?shù)酿椊橘|(zhì)逆時(shí)偏移成像研究[D];中國(guó)地質(zhì)大學(xué);2017年
2 李靜爽;基于近似解析離散化算子的逆時(shí)偏移方法及其應(yīng)用[D];清華大學(xué);2014年
3 程飛;多井井間三維波場(chǎng)數(shù)值模擬與逆時(shí)偏移成像研究[D];中國(guó)地質(zhì)大學(xué);2015年
4 馮蘭蘭;保辛幾何結(jié)構(gòu)不變的逆時(shí)偏移方法研究[D];清華大學(xué);2015年
5 楊佳佳;多分量地震波逆時(shí)偏移的關(guān)鍵技術(shù)研究[D];中國(guó)海洋大學(xué);2015年
6 高新成;基于云計(jì)算的逆時(shí)偏移數(shù)據(jù)處理方法研究[D];東北石油大學(xué);2016年
7 Naveed Akram;基于彈性波模擬的逆時(shí)偏移以及地震數(shù)據(jù)解釋[D];中國(guó)科學(xué)技術(shù)大學(xué);2017年
8 王娟;TTI介質(zhì)準(zhǔn)縱波逆時(shí)偏移方法研究[D];中國(guó)石油大學(xué)(華東);2015年
9 趙旭;時(shí)域聲波方程逆時(shí)偏移成像及其角道集計(jì)算[D];吉林大學(xué);2015年
10 王京;隧道空間有限元地震波場(chǎng)模擬與逆時(shí)偏移成像[D];中國(guó)地質(zhì)大學(xué);2017年
相關(guān)碩士學(xué)位論文 前10條
1 陳洪杰;基于聲波方程的數(shù)值模擬與逆時(shí)偏移方法研究[D];吉林大學(xué);2010年
2 魏巍;基于疊前逆時(shí)偏移方法的圓管損傷識(shí)別[D];哈爾濱工業(yè)大學(xué);2015年
3 張敬秋;交錯(cuò)網(wǎng)格有限差分法地震資料逆時(shí)偏移[D];成都理工大學(xué);2015年
4 劉詩(shī)竹;VSP數(shù)據(jù)成像方法研究[D];東北石油大學(xué);2015年
5 柯璇;復(fù)雜構(gòu)造疊前逆時(shí)偏移成像方法研究[D];東北石油大學(xué);2015年
6 侯維麗;逆時(shí)偏移成像[D];東北石油大學(xué);2015年
7 郭雪豹;VSP地震資料逆時(shí)偏移方法研究[D];東北石油大學(xué);2015年
8 張千祥;純P波各向異性介質(zhì)波場(chǎng)數(shù)值模擬及逆時(shí)偏移研究[D];吉林大學(xué);2016年
9 于江龍;聲波逆時(shí)偏移及噪聲壓制[D];吉林大學(xué);2016年
10 方修政;各向異性介質(zhì)逆時(shí)偏移方法研究[D];東北石油大學(xué);2016年
,本文編號(hào):2195432
本文鏈接:http://sikaile.net/kejilunwen/diqiudizhi/2195432.html