發(fā)布時(shí)間：2018-06-23 00:26

  本文選題：黏聲波動方程 + 吸收衰減　； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：本文主要對波動方程吸收衰減補(bǔ)償方法進(jìn)行了研究,這項(xiàng)技術(shù)是服務(wù)于油氣田勘探開發(fā)的重要技術(shù)手段。 現(xiàn)如今勘探技術(shù)的應(yīng)用都要求反射地震信號具有更高的分辨率及保真度。在地震勘探中決定地震分辨率的關(guān)鍵是獲取的反射信號的有效頻帶寬度,而信號傳播過程中1由于地層的吸收作用,有部分能量被衰減,導(dǎo)致接收到的信號頻帶寬度變窄。因此補(bǔ)償能量的衰減對提高地震分辨率具有重要意義。本人在前人的基礎(chǔ)上,對吸收衰減補(bǔ)償技術(shù)進(jìn)行了以下方而的系統(tǒng)研究：1)對黏彈性波動理論進(jìn)行了了解并總結(jié)；2)對聲波方程、黏聲波方程等進(jìn)行了數(shù)值模擬及波場分析；3)對品質(zhì)l大l子計(jì)算方法進(jìn)行了研究；4)實(shí)現(xiàn)了相移法和裂步傅里葉法的吸收衰減補(bǔ)償；5)將裂步傅里葉法運(yùn)用于實(shí)際資料處理中。穩(wěn)定性和有效性是吸收衰減補(bǔ)償中要考慮的兩個(gè)基本問題,對于有效性,本文使用快速傅里葉法可以快速有效地實(shí)現(xiàn);對于穩(wěn)定性,本文使用加權(quán)法。黏滯性波動方程的數(shù)值模擬結(jié)果表明黏滯性介質(zhì)對地震波有吸收衰減作用,相移法和裂步傅里葉法在數(shù)值模擬r中能穩(wěn)定有效地補(bǔ)償能量。將補(bǔ)償方法運(yùn)用于實(shí)際資料,對得到的偏移剖而和反演結(jié)果進(jìn)行對比分析,該方法可以穩(wěn)定有效地補(bǔ)償實(shí)際地震資料。理論和實(shí)際證明了此方法的有效性和實(shí)用性。
[Abstract]:In this paper, the absorption and attenuation compensation method of wave equation is studied, which is an important technique for oil and gas field exploration and development. Nowadays, the application of exploration technology requires higher resolution and fidelity of reflected seismic signals. In seismic exploration, the key to determine the seismic resolution is the effective band width of the acquired reflection signal. In the process of signal propagation, some energy is attenuated due to the absorption of the formation, which results in the narrowing of the band width of the received signal. Therefore, it is very important to compensate for the attenuation of energy to improve the seismic resolution. On the basis of previous studies, the absorption attenuation compensation technique is systematically studied in the following aspects: 1) the viscoelastic wave theory is studied and summarized. 2) numerical simulation and wave field analysis of acoustic wave equation, viscoacoustic wave equation and so on are carried out. 3) this paper studies the calculation method of quality l _ (l) L ~ (1) and realizes the absorption attenuation compensation of phase-shift method and split-step Fourier method. 5) the split-step Fourier method is applied to practical data processing. The stability and efficiency are two basic problems to be considered in the absorption attenuation compensation. For the efficiency, the fast Fourier method is used to realize the efficiency quickly and effectively, and the weighting method is used for the stability. The numerical simulation results of viscous wave equation show that viscous medium can absorb and attenuate seismic wave, and phase shift method and split step Fourier method can compensate energy stably and effectively in numerical simulation r. The compensation method is applied to the actual data and the migration profile obtained is compared with the inversion results. The method can compensate the actual seismic data stably and effectively. The effectiveness and practicability of this method are proved theoretically and practically.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P631.44

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 奚先,姚姚;二維粘彈性隨機(jī)介質(zhì)中的波場特征分析[J];地球物理學(xué)進(jìn)展;2004年03期

2 劉財(cái),張智,邵志剛,劉洋,鐘偉;線性粘彈體中地震波場偽譜法模擬技術(shù)[J];地球物理學(xué)進(jìn)展;2005年03期

3 邵志剛;傅容珊;黃建華;劉財(cái);;線性粘彈介質(zhì)中地震波場數(shù)值模擬[J];地球物理學(xué)進(jìn)展;2007年04期

4 何兵紅;吳國忱;梁鍇;白曉寅;;粘彈性介質(zhì)單程波法非零偏移距地震數(shù)值模擬與偏移[J];地球物理學(xué)進(jìn)展;2009年04期

5 孫成禹;肖云飛;印興耀;彭洪超;;黏彈介質(zhì)波動方程有限差分解的穩(wěn)定性研究[J];地震學(xué)報(bào);2010年02期

6 董良國;復(fù)雜地表?xiàng)l件下地震波傳播數(shù)值模擬[J];勘探地球物理進(jìn)展;2005年03期

7 宮同舉;孫成禹;彭洪超;肖云飛;孫甜甜;;幾種提取品質(zhì)因子方法的對比分析[J];勘探地球物理進(jìn)展;2009年04期

8 鐘飛;張偉;焦標(biāo)強(qiáng);鐘約先;;可控震源粘彈性波動方程有限差分模擬[J];煤田地質(zhì)與勘探;2011年02期

9 孟凡順,郭海燕,和轉(zhuǎn),王渝明;復(fù)雜地質(zhì)體粘滯彈性波正演模擬的有限差分法[J];青島海洋大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年02期

10 崔興福;徐凌;陳立康;;復(fù)雜近地表波動方程波場延拓靜校正[J];石油勘探與開發(fā);2006年01期

，

本文編號：2054896