發(fā)布時間：2018-04-21 09:46

  本文選題：AVO技術(shù) + Zoeppritz方程�。� 參考：《巖性油氣藏》2017年05期

【摘要】：針對目前AVO反演技術(shù)中普遍使用的Aki-Richards,Shuey和Hilterman近似式,以Zoeppritz方程的精確解為參照,針對4種常見的含氣砂巖類型,分別利用3種近似式計算AVO響應,并繪出相對誤差隨入射角的變化曲線。通過對比與分析發(fā)現(xiàn):Aki-Richards和Shuey近似式計算結(jié)果均較Zoeppritz方程精確解誤差更小,Hilterman近似式計算結(jié)果誤差較大;特別是在大角度入射時,Shuey近似式計算結(jié)果更為精確、穩(wěn)定;不同儲層條件下,3種近似式的誤差百分比不同,曲線特征不一致,整體上3種近似式在第Ⅲ類AVO氣藏條件下誤差均較小,計算結(jié)果的精確度均較高。3種近似式對4種典型含氣砂巖類型給出的定量分析結(jié)果為優(yōu)選儲層參數(shù)反演方法提供了理論依據(jù)。
[Abstract]:In view of the Aki-Richard Schi-Shuey and Hilterman approximations commonly used in AVO inversion techniques at present, taking the exact solution of the Zoeppritz equation as the reference, three approximate formulas are used to calculate the AVO response for four common types of gas-bearing sandstone. The curve of relative error with incident angle is given. By comparison and analysis, it is found that the error of the exact solution of the Zoeppritz equation is smaller than that of the Zoeppritz equation, especially when the incident angle is large, the results are more accurate and stable. Under different reservoir conditions, the error percentages of the three approximations are different, and the curve characteristics are not consistent. On the whole, the errors of the three approximations are smaller under the condition of the third type AVO gas reservoir. The accuracy of the calculation results is higher than that of the three approximate formulas. The quantitative analysis results of four typical gas-bearing sandstone types provide a theoretical basis for the optimal reservoir parameter inversion method.
【作者單位】： 中國石油勘探開發(fā)研究院油氣地球物理研究所;
【基金】：國家重大科技專項課題“低滲、特低滲油氣儲層相對高產(chǎn)富集區(qū)預測技術(shù)”(編號:2011ZX05013-001)資助
【分類號】：P618.13;P631.4
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本文編號：1781906