歧口凹陷陡坡扇地震地质模型正演与应用
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摘要
根据歧口凹陷典型陆相沉积为主的沉积模式,结合储层纵向砂泥薄互层、横向砂体变化大及砂泥岩速度接近造成的波阻抗差异小等特点,利用该区的实际井测井资料分别建立一维、二维、三维地质模型,进行正演模拟。通过实际井简化一维模型正演分析,建立歧口典型陡坡扇沉积特征的地质模型进行二维正演模拟,总结陡坡扇沉积的地震响应特征,再利用三维模型正演能很好的反映砂体纵横向变化引起地震属性变化的优势,对三维正演数据体的各种平面属性及时间切片等参数特征进行分析,优选出了适合该类储层的地震预测方法,为陡坡扇沉积砂体的地震资料剖面解释预测和地震相识别提供了理论依据。
According to the sedimentary pattern of Qikou hollow characterized by continental deposit,we established 1D,2D,and 3Dgeologic models from actual logging information for forward modeling,considering the significant variation in thin sand shale interbed vertically and in sand body horizontally,as well as the low wave impedance due to similar velocity among sand shales.Based on actual logging information,we simplified the 1Dforward modeling,constructed geologic model for 2Dforward modeling based on the typical slope fan sedimentation system in Qikou,and summarized its seismic response features.Then,as 3Dforward modeling is a good indication of the change in seismic property due to vertical and horizontal variation of sand bodies,we analyzed the data volume of 3Dforward modeling and analyzed the parameter characteristics of plane property and time slice,selected an optimized seismic prediction approach suitable for this type of reservoir,and provided evidence for the interpretation and prediction of seismic data and the identification of seismic facies for sedimentary sand bodies in steep slopes.
引文
[1]Chunling Wu,Jerry M.Harrris,Kurt T.Nihei,Two-dimensional finite-difference seismic model-ing of an open fluid-filledfracture:Comparison ofthin-layer and linear-slip models[J].Geophysics,2005,70(4):T57~T62.
    [2]MartinGet al.Marmousi-2:an updated model forthe investigation of AVO in structurally complex are-as.Expanded Abstracts of 72nd SEG Mtg[C].SaltLake City,2002.
    [3]高秋菊,姜效典.地震模型正演技术在复杂油气藏勘探中的应用[J].内蒙古石油化工,2008,34(16):118~121.
    [4]韩文功,沈财余.陆相断陷盆地复杂地质模型建立与正演模拟[J].石油地球物理勘探,2006,41(4):396~401.
    [5]韩国猛,李淑恩,池永红,等.大港歧北斜坡沙二段和沙三段模型指导下薄互层储层预测及效果[J].工程地球物理学报,2011,8(6):779~787.
    [6]荣辉,肖敦清,白小鸟,等.歧口凹陷中部古近系沙三一亚段水下扇沉积体系内部构成分析[J].大地构造与成矿学,2010.34(4)520~528.
    [7]吴顺和,王云专,吴邕.地震波的正演和对地震波的新认识[J].大庆石油学院学报,1998,22(2):18~20.
    [8]汪恩华,贺振华,李庆忠.基于薄层的反射系数谱理论与模型正演[J].成都理工学院学报,2001,28(1):70~74.
    [9]苏朝光,韩文功,闫昭岷,等.济阳坳陷地震资料断层分辨力模型正演模拟[J].油气地球物理,2006,4(2):22~26.
    [10]李三福,肖为,朱美娟,等.深水礁滩相储层地震模型的正演模拟及其地震响应特征分析[J].工程地球物理学报,2011,8(1):91~96.

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