本文選題：等效流體體積模量　切入點：直接反演　出處：《石油地球物理勘探》2017年02期 　論文類型：期刊論文

【摘要】：流體因子構(gòu)建對儲層流體識別具有重要意義�；诘刃Ы橘|(zhì)理論,將體積模量中體現(xiàn)流體效應的部分定義為等效流體體積模量。巖石物理分析表明,等效流體體積模量對于巖石孔隙內(nèi)流體類型更加敏感,疊前地震反演可以有效獲得等效流體體積模量。借助多孔彈性介質(zhì)巖石物理模型,建立了Gassmann流體項與等效流體體積模量的直接關(guān)系,推導了基于等效流體體積模量的Zoeppritz方程的近似方程以及彈性阻抗方程,實現(xiàn)了基于彈性阻抗的等效流體體積模量直接反演。模型試算驗證了方法的可行性,實際資料應用表明基于等效流體體積模量直接反演提高了流體識別準確度。
[Abstract]:Fluid factor construction is of great significance for reservoir fluid identification. Based on the theory of equivalent medium, the part of volume modulus that reflects fluid effect is defined as equivalent fluid volume modulus. The equivalent fluid volume modulus is more sensitive to the fluid types in rock pores, and the equivalent fluid volume modulus can be obtained effectively by pre-stack seismic inversion. The direct relationship between the Gassmann fluid term and the equivalent fluid volume modulus is established. The approximate equations and the elastic impedance equations of the Zoeppritz equation based on the equivalent fluid volume modulus are derived. The direct inversion of equivalent fluid volume modulus based on elastic impedance is realized. The feasibility of the method is verified by the model test. The application of practical data shows that the accuracy of fluid identification is improved based on the direct inversion of equivalent fluid volume modulus.
【作者單位】： 中國石油大學(華東)地球科學與技術(shù)學院;海洋國家實驗室海洋礦產(chǎn)資源評價與探測技術(shù)功能實驗室;
【基金】：國家自然科學基金石油化工聯(lián)合基金重點項目“非常規(guī)油氣富集機制與地球物理甜點識別”(U1562215) 國家油氣重大專項(2016ZX05024-004) 中國博士后科學基金項目(2014M550379)聯(lián)合資助
【分類號】：P631.4;P618.13
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本文編號：1631293