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拉梅参数直接反演方法在东海N构造致密储层烃类检测中的应用

张岩 秦德文 黄鋆

张岩, 秦德文, 黄鋆. 拉梅参数直接反演方法在东海N构造致密储层烃类检测中的应用[J]. CT理论与应用研究, 2022, 31(3): 305-316. DOI: 10.15953/j.ctta.2021.088
引用本文: 张岩, 秦德文, 黄鋆. 拉梅参数直接反演方法在东海N构造致密储层烃类检测中的应用[J]. CT理论与应用研究, 2022, 31(3): 305-316. DOI: 10.15953/j.ctta.2021.088
ZHANG Y, QIN D W, HUANG J. Application of lame parameter direct inversion in hydrocarbon detection of low-porosity and low-permeability reservoirs in N structure in East China Sea basin[J]. CT Theory and Applications, 2022, 31(3): 305-316. DOI: 10.15953/j.ctta.2021.088. (in Chinese)
Citation: ZHANG Y, QIN D W, HUANG J. Application of lame parameter direct inversion in hydrocarbon detection of low-porosity and low-permeability reservoirs in N structure in East China Sea basin[J]. CT Theory and Applications, 2022, 31(3): 305-316. DOI: 10.15953/j.ctta.2021.088. (in Chinese)

拉梅参数直接反演方法在东海N构造致密储层烃类检测中的应用

doi: 10.15953/j.ctta.2021.088
基金项目: 中国海油“七年行动计划”东海专项课题“西湖凹陷西部地区勘探开发关键技术研究”(CNOOC-KJ 135 ZDXM39 SH01)。
详细信息
    作者简介:

    张岩:男,硕士,中海石油(中国)有限公司上海分公司物探工程师,主要从事油气地球物理技术研究工作,E-mail:zy1987555@163.com

  • 中图分类号: P  315;P  631

Application of Lame Parameter Direct Inversion in Hydrocarbon Detection of Low-porosity and Low-permeability Reservoirs in N Structure in East China Sea Basin

  • 摘要: 东海N构造主要目的层为强水动力环境下发育的三角洲平原分流河道砂体。平面砂层分布不连续,横向非均质性强。受埋深压实和成岩作用等影响,储层呈低孔渗特征,岩石物理规律叠置严重。此外,深部地震数据存在缺乏大角度入射信息等问题,落实研究区致密储层流体分布范围对于勘探开发设计部署具有重要意义。本文引入一种基于拉梅参数直接反演的地震流体描述方法,通过实测井数据的岩石物理定性和定量判析,优选流体敏感参数,进而结合拉梅参数的两项AVO模型参数化方程,从叠前道集中分别提取拉梅参数的AVO属性体。然后利用有色反演技术直接提取流体敏感弹性信息,以指导地震流体描述。实例应用表明,该方法的烃检结果与测井解释成果匹配度高,能够有效刻画研究区致密储层流体展布规律,可为新领域油气资源发现提供重要技术支撑。

     

  • 图  1  含水砂岩底界面反射系数对比

    Figure  1.  Comparison of reflection coefficients of the bottom interface of water-bearing sandstone

    图  2  利用拉梅参数直接反演方法进行烃类检测流程图

    Figure  2.  The flow chart of hydrocarbon detection using lame parameters direct inversion

    图  3  多井地震岩石物理交会

    Figure  3.  Seismic rock-physics crossplot of wells

    图  4  多种弹性参数的流体敏感指示系数

    1-AI;2-SI;3-σ;4-ρ;5-K;6-M;7-λ;8-μ;9-λ/μ;10-EEI30°;11-ρλ;12-ρμ

    Figure  4.  Fluid sensitivity indicator coefficient for various elastic parameters

    图  5  拉梅模量岩石物理量板分析

    Figure  5.  The analysis of rock-physics template of Lame modulus

    图  6  研究区连井线不同烃类检测结果

    Figure  6.  Different hydrocarbon detection results in research area

    图  7  主力层M1沿层拉梅参数比值 λ/μ 烃类检测平面属性

    Figure  7.  The plane attribute of λ/μ hydro- carbon detection of main layer M1

    表  1  含气砂岩和含水砂岩模型弹性参数

    Table  1.   Parameters of the sandstone model

    地层Kdry/GPaμ/GPa$\gamma ^2_{{\rm{dry}}}$$\gamma ^2_{{\rm{sat}}} $$\rho $/(g/c3VP/(m/s)VS/(m/s)
    含水砂(上层)332.324.481.926801265
    含气砂(下层)332.303.511.725201345
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-02-25
  • 录用日期:  2022-03-04
  • 网络出版日期:  2022-03-15
  • 刊出日期:  2022-05-23

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