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基于地质统计学的地震反演冲积扇相研究——以新疆C油藏为例

赵磊 石亮亮 柯岭 贺婷婷 张政 许学良

赵磊, 石亮亮, 柯岭, 等, 2017. 基于地质统计学的地震反演冲积扇相研究——以新疆C油藏为例. 地质力学学报, 23 (5): 686-694.
引用本文: 赵磊, 石亮亮, 柯岭, 等, 2017. 基于地质统计学的地震反演冲积扇相研究——以新疆C油藏为例. 地质力学学报, 23 (5): 686-694.
ZHAO Lei, SHI Liangliang, KE Ling, et al., 2017. STUDY OF ALLUVIAL FAN SEDIMENTARY FACIES BASED ON GEOSTATISTICAL SEISMIC INVERSION-TAKE THE C OILFIELD OF XINJIANG AS AN EXAMPLE. Journal of Geomechanics, 23 (5): 686-694.
Citation: ZHAO Lei, SHI Liangliang, KE Ling, et al., 2017. STUDY OF ALLUVIAL FAN SEDIMENTARY FACIES BASED ON GEOSTATISTICAL SEISMIC INVERSION-TAKE THE C OILFIELD OF XINJIANG AS AN EXAMPLE. Journal of Geomechanics, 23 (5): 686-694.

基于地质统计学的地震反演冲积扇相研究——以新疆C油藏为例

基金项目: 

国家科技重大专项 2016ZX05033-003-002

详细信息
    作者简介:

    赵磊(1985-), 男, 博士, 主要从事沉积相及开发地质方向研究工作。E-mail:ray-zhao@163.com

  • 中图分类号: P618.13;P631.4

STUDY OF ALLUVIAL FAN SEDIMENTARY FACIES BASED ON GEOSTATISTICAL SEISMIC INVERSION-TAKE THE C OILFIELD OF XINJIANG AS AN EXAMPLE

  • 摘要: 新疆C油藏属于开发早期区块,井资料少、井距较大,采用地震反演等数据进行沉积相研究,可提高研究精度。采用约束稀疏脉冲反演和地质统计学反演两种方法进行地震反演研究,前者受到地震分辨率的限制,纵向上分辨率不能够满足研究需求;而后者可提高反演纵向上的分辨率。本文采用地质统计学反演的储层厚度分布图进行沉积相分析,得到沉积相平面展布图,并总结了沉积相模式,解决了勘探阶段沉积相难以描述等问题,并取得了较好的效果。

     

  • 图  1  油藏区域地理位置图

    Figure  1.  Location map of the reservoir area

    图  2  油藏P2x31层顶面单斜构造平面展布图

    Figure  2.  Layout of monoclinic structure plane of the top surface of reservoir P2x31 layer

    图  3  che502井单井柱状图

    Figure  3.  Single well histogram of che 502 well

    图  4  新疆C油藏冲积扇-扇根相沉积模式图

    (据文献[19]修改)

    Figure  4.  Sedimentary model of alluvial fan-fan root in Xinjiang C reservoir

    图  5  约束稀疏脉冲波阻抗反演技术流程图

    Figure  5.  Flow chart of constraint sparse pulse wave impedance inversion technique

    图  6  叠后波阻抗反演与地质统计学反演对比

    Figure  6.  Constrast profile of post-stack impedance inversion and geostatistical inversion

    图  7  地质统计学过井che67反演剖面

    Figure  7.  Inversion profile of che67 well using geostatistics

    图  8  P2x31层平均阻抗平面图和RMS振幅平面图对比

    Figure  8.  Constrast of P2x31 layer average impedance map and amplitude map

    图  9  P2x31储层时间域厚度分布图

    Figure  9.  P2x31 reservoir time-domain thickness distribution

    图  10  P2x31沉积相与储层厚度分布图

    Figure  10.  P2x31 sedimentary facies and reservoir thickness distribution

    图  11  P2x32沉积相与储层厚度分布图

    Figure  11.  P2x32 sedimentary facies and reservoir thickness distribution

    图  12  P2x33沉积相与储层厚度分布图

    Figure  12.  P2x33 sedimentary facies and reservoir thickness distribution

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