本文選題：PP波 + PS波　； 參考：《中國(guó)石油大學(xué)(華東)》2015年碩士論文

【摘要】：AVO反演是利用振幅隨偏移距的變化規(guī)律來(lái)估算儲(chǔ)層巖石及流體的彈性參數(shù)并進(jìn)行油氣檢測(cè)。通常情況下,是利用縱波AVO反演技術(shù)反演得到縱、橫波速度和密度等彈性參數(shù),然而縱波AVO反演往往不能獲取準(zhǔn)確的橫波速度和密度信息。為此本文基于多波多分量地震資料,開(kāi)展了PP波和PS波聯(lián)合AVO反演方法的研究。針對(duì)無(wú)約束情況下的PP波和PS波聯(lián)合AVO三參數(shù)反演存在的不適定問(wèn)題,在測(cè)井資料充足情況下,本文從正則化反演角度,基于縱波井約束反演,將轉(zhuǎn)換橫波信息加入構(gòu)建了由縱波、轉(zhuǎn)換橫波以及井資料組成的目標(biāo)函數(shù),提出了井約束下的PP波和PS波聯(lián)合AVO反演方法;從概率化反演角度,將基于貝葉斯框架下的縱波AVO波形反演方法與PP、PS波聯(lián)合AVO反演方法結(jié)合在一起實(shí)現(xiàn)了基于貝葉斯理論的PP和PS波聯(lián)合AVO波形反演來(lái)得到高精度和高分辨率的三參數(shù)反演結(jié)果。針對(duì)井資料缺乏的地震工區(qū),AVO反演存在密度反演不準(zhǔn)確的問(wèn)題,本文提出了PP波和PS波分步聯(lián)合AVO反演方法。即首先通過(guò)兩參數(shù)聯(lián)合反演縱橫波速度,以反演出來(lái)的縱波速度作為已知量并舍棄得到的橫波速度,再通過(guò)兩參數(shù)聯(lián)合反演得到橫波速度和密度以得到準(zhǔn)確的三參數(shù)反演結(jié)果。本文通過(guò)測(cè)井?dāng)?shù)據(jù)合成道集、Marmousi2模型和某工區(qū)實(shí)際資料來(lái)測(cè)試檢驗(yàn)本文提出的PP波和PS波聯(lián)合AVO反演方法,模型測(cè)試表明三種PP波和PS波聯(lián)合AVO反演方法都能得到相對(duì)準(zhǔn)確的反演三參數(shù),證明了PP波和PS聯(lián)合AVO反演方法的可行性。實(shí)際資料測(cè)試說(shuō)明了PP波和PS波分步聯(lián)合AVO反演方法的實(shí)用性。
[Abstract]:AVO inversion is to estimate the elastic parameters of reservoir rocks and fluids and to detect oil and gas by using the variation of amplitude with offset. In general, P-wave AVO inversion technique is used to obtain elastic parameters such as longitudinal, shear wave velocity and density. However, P-wave AVO inversion is often unable to obtain accurate S-wave velocity and density information. Therefore, based on multiwave and multicomponent seismic data, the research of PP wave and PS wave combined AVO inversion method is carried out in this paper. Aiming at the ill-posed problem of PP wave and PS wave combined AVO three-parameter inversion under unconstrained condition, under the condition of sufficient logging data, this paper, from the angle of regularization inversion, is based on P-wave constraint inversion. The objective function composed of P-wave, converted S-wave and well data is constructed by adding the converted S-wave information, and a joint AVO inversion method of PP wave and PS wave under well constraint is proposed, which is based on probabilistic inversion. The P-wave AVO waveform inversion method based on Bayesian framework is combined with PPPS-wave combined AVO inversion method to realize PP and PS wave combined AVO waveform inversion based on Bayesian theory to obtain high precision and high resolution three-parameter inversion results. Aiming at the problem of inaccuracy of density inversion in AVO inversion in seismic work area where well data is lacking, a step by step combined AVO inversion method of PP wave and PS wave is proposed in this paper. That is to say, the velocity of P-S wave is firstly inversed by two parameters, the velocity of P-wave is used as known quantity and the velocity of S-wave is discarded, then the velocity and density of S-wave are obtained by joint inversion of two parameters to get the accurate result of three-parameter inversion. In this paper, the combined AVO inversion method of PP wave and PS wave is tested and verified by combining the Marmousi2 model with logging data and the actual data of a certain working area. The model tests show that the three kinds of PP wave and PS wave combined AVO inversion methods can obtain relatively accurate inversion parameters, which proves the feasibility of PP wave and PS combined AVO inversion method. The practical data show the practicability of PP wave and PS wave step by step AVO inversion method.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P631.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 侯棟甲;劉洋;任志明;魏修成;陳天勝;;基于貝葉斯理論的VTI介質(zhì)多波疊前聯(lián)合反演[J];石油物探;2014年03期

2 侯棟甲;劉洋;胡國(guó)慶;魏修成;陳天勝;;基于貝葉斯理論的疊前多波聯(lián)合反演彈性模量方法[J];地球物理學(xué)報(bào);2014年04期

3 田軍;吳國(guó)忱;宗兆云;;魯棒性AVO三參數(shù)反演方法及不確定性分析[J];石油地球物理勘探;2013年03期

4 李海山;吳國(guó)忱;印興耀;;基于廣義高斯分布的地震盲反褶積方法研究[J];地球物理學(xué)進(jìn)展;2012年03期

5 張春濤;王尚旭;;PP波和PS波聯(lián)合反演研究進(jìn)展[J];科技導(dǎo)報(bào);2010年10期

6 楊志芳;曹宏;;地震巖石物理研究進(jìn)展[J];地球物理學(xué)進(jìn)展;2009年03期

7 楊培杰;印興耀;;非線(xiàn)性二次規(guī)劃貝葉斯疊前反演[J];地球物理學(xué)報(bào);2008年06期

8 洪余剛;李亞林;李忠;謝芳;鄭愛(ài)敏;;多分量地震資料層位對(duì)比[J];天然氣工業(yè);2008年09期

9 張明振;;對(duì)測(cè)井約束地震波阻抗反演的理解與應(yīng)用[J];油氣地球物理;2006年03期

10 沈財(cái)余,閻向華;測(cè)井約束地震反演的分辨率與地震分辨率的關(guān)系[J];石油物探;1999年04期

相關(guān)碩士學(xué)位論文 前4條

1 閆惠中;多波聯(lián)合AVO反演及流體預(yù)測(cè)[D];中國(guó)石油大學(xué)（華東）;2012年

2 楊文博;多分量地震疊前聯(lián)合反演方法研究[D];中國(guó)石油大學(xué);2010年

3 王文濤;地震儲(chǔ)層評(píng)價(jià)與預(yù)測(cè)的貝葉斯反演方法研究[D];中國(guó)地質(zhì)大學(xué);2008年

4 張振宇;多井約束地震反演在儲(chǔ)層描述中的應(yīng)用研究[D];中國(guó)海洋大學(xué);2003年

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本文編號(hào)：2017142