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综合沉积正演与多点地质统计模拟辫状河三角洲: 以塔河T区为例

贺婷婷 谈心 段太忠 赵磊 张文彪 乔勇 刘彦锋

贺婷婷, 谈心, 段太忠, 赵磊, 张文彪, 乔勇, 刘彦锋. 综合沉积正演与多点地质统计模拟辫状河三角洲: 以塔河T区为例[J]. 地质科技通报, 2021, 40(3): 54-66. doi: 10.19509/j.cnki.dzkq.2021.0301
引用本文: 贺婷婷, 谈心, 段太忠, 赵磊, 张文彪, 乔勇, 刘彦锋. 综合沉积正演与多点地质统计模拟辫状河三角洲: 以塔河T区为例[J]. 地质科技通报, 2021, 40(3): 54-66. doi: 10.19509/j.cnki.dzkq.2021.0301
He Tingting, Tan Xin, Duan Taizhong, Zhao Lei, Zhang Wenbiao, Qiao Yong, Liu Yanfeng. Integrated sedimentary forward modeling and multipoint geostatistics in braided river delta simulation: A case from block T of Tahe Oilfield[J]. Bulletin of Geological Science and Technology, 2021, 40(3): 54-66. doi: 10.19509/j.cnki.dzkq.2021.0301
Citation: He Tingting, Tan Xin, Duan Taizhong, Zhao Lei, Zhang Wenbiao, Qiao Yong, Liu Yanfeng. Integrated sedimentary forward modeling and multipoint geostatistics in braided river delta simulation: A case from block T of Tahe Oilfield[J]. Bulletin of Geological Science and Technology, 2021, 40(3): 54-66. doi: 10.19509/j.cnki.dzkq.2021.0301

综合沉积正演与多点地质统计模拟辫状河三角洲: 以塔河T区为例

doi: 10.19509/j.cnki.dzkq.2021.0301
基金项目: 

国家科技重大专项 2016ZX05033-003-002

详细信息
    作者简介:

    贺婷婷(1987-), 女, 高级工程师, 主要从事油气藏精细描述、地热资源勘探评价研究。E-mail: htt10502@163.com

  • 中图分类号: P539.2

Integrated sedimentary forward modeling and multipoint geostatistics in braided river delta simulation: A case from block T of Tahe Oilfield

  • 摘要: 为有效提高三角洲沉积相模拟的精度,以塔河T区为例,应用地震、岩心及测井资料,通过定量评估可容纳空间、物源供给和沉积搬运之间复杂的关系,建立该地区辫状河三角洲砂体沉积正演模型,并将此转化为多点地质统计模拟的三维训练图像,进行研究区辫状河三角洲多点地质统计模拟。研究表明:辫状河三角洲砂体分布受沉积正演模拟控制参数影响,其中砂质供应体积分数、沉积物流入比例、水流载荷量及洪水期间隔均属于强敏感性参数,对研究区三角洲砂体分布影响较大;砂岩含量沉积正演模型体现了辫状河三角洲退积式沉积过程,符合研究区沉积特征,将其转化为三维训练图像,多点地质统计模拟结果在三维空间具有受训练图像约束的特征,体现了训练图像所反映的相带接触关系,并且与钻井认识一致。所提出的这种新的获取三角洲沉积体三维训练图像的方法,综合了沉积正演模拟与多点地质统计模拟的优势,取得了一定的应用效果,对类似沉积体三维地质建模具有一定的借鉴作用。

     

  • 图 1  模拟目的段取心井短期基准面旋回划分

    Figure 1.  Short-term base-level cycle division of the simulation core well

    图 2  研究区沉积数值模拟路线图

    Figure 2.  Sedimentary numerical simulation workflow scheme of the study area

    图 3  研究区初始基底水深图

    Figure 3.  Bathymetry map of the study area

    图 4  物源砂岩供应体积分数敏感性模拟结果

    Figure 4.  Sensitivity simulation result of the percentage of sandstone supply

    图 5  水流载荷量敏感性模拟结果

    Figure 5.  Sensitivity simulation result of current load quantity

    图 6  短期高能期间沉积物流入比例敏感性模拟结果

    Figure 6.  Sensitivity simulation result of the ratio of sediment flow in short-term high enery period

    图 7  短期高能期间洪水期间隔敏感性模拟结果

    Figure 7.  Sensitivity simulation result of the flood interval

    图 8  沉积模拟剖面与实钻剖面岩性分布及旋回性对比

    Figure 8.  Comparison of lithology distribution and cyclicity between sedimentary simulation section and the actual drilling section

    图 9  研究区砂岩沉积演化平面图

    Figure 9.  Sandstone sedimentary evolution in the study area

    图 10  开发层位模拟与实钻旋回性对比

    Figure 10.  Cycle comparison of simulation and actual drilling in the development formation

    图 11  手绘和沉积模拟训练图像建模结果对比

    Figure 11.  Comparison of modeling results of hand-drawn and sedimentary simulation training images

    图 12  辫状河三角洲三维训练图像空间分布特征

    Figure 12.  Braided delta training image viewed from 3D and fence

    图 13  目的层模拟结果纵向变化

    Figure 13.  Vertical evolution of the object formation

    图 14  实钻与模拟结果过井剖面相对比

    Figure 14.  Comparison between actual drilling and simulation results through well profile analysis

    表  1  沉积模拟厚度与井点厚度对比

    Table  1.   Contrast of sedimentary simulation thickness and well thickness

    井名 井点地层厚度/m 模拟地层厚度/m 误差/%
    T2 47.47 48.31 1.74
    T5 43.66 45.48 4
    T8 43.27 44.94 3.72
    T1 44.61 45.96 2.94
    T10 47.35 48.14 1.64
    T7 47.19 48.22 2.14
    T11 47.51 47.79 0.59
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