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塔里木盆地顺北5号走滑断裂带北段超深层裂缝储层的地震属性表征方法研究及应用

刘军 龚伟 黄超 李伟 李弘艳 董晓彬 蒋恕

刘军, 龚伟, 黄超, 李伟, 李弘艳, 董晓彬, 蒋恕. 塔里木盆地顺北5号走滑断裂带北段超深层裂缝储层的地震属性表征方法研究及应用[J]. 地质科技通报, 2022, 41(4): 1-11. doi: 10.19509/j.cnki.dzkq.2022.0112
引用本文: 刘军, 龚伟, 黄超, 李伟, 李弘艳, 董晓彬, 蒋恕. 塔里木盆地顺北5号走滑断裂带北段超深层裂缝储层的地震属性表征方法研究及应用[J]. 地质科技通报, 2022, 41(4): 1-11. doi: 10.19509/j.cnki.dzkq.2022.0112
Liu Jun, Gong Wei, Huang Chao, Li Wei, Li Hongyan, Dong Xiaobin, Jiang Shu. Seismic attribute characteristics of an ultradeep fractured-reservoir in the northern section of Shunbei No.5 strike-slip fault zone in Tarim Basin[J]. Bulletin of Geological Science and Technology, 2022, 41(4): 1-11. doi: 10.19509/j.cnki.dzkq.2022.0112
Citation: Liu Jun, Gong Wei, Huang Chao, Li Wei, Li Hongyan, Dong Xiaobin, Jiang Shu. Seismic attribute characteristics of an ultradeep fractured-reservoir in the northern section of Shunbei No.5 strike-slip fault zone in Tarim Basin[J]. Bulletin of Geological Science and Technology, 2022, 41(4): 1-11. doi: 10.19509/j.cnki.dzkq.2022.0112

塔里木盆地顺北5号走滑断裂带北段超深层裂缝储层的地震属性表征方法研究及应用

doi: 10.19509/j.cnki.dzkq.2022.0112
基金项目: 

中国石油化工股份有限公司西北油田分公司科研项目 34400008-19-ZC0613-0022

详细信息
    作者简介:

    刘军(1982-), 男, 副研究员, 主要从事石油物探综合性研究。E-mail: xbsj@sinopec.com

    通讯作者:

    蒋恕(1976-), 男, 教授, 博士生导师, 主要从事非常规油气资源地质与工程研究工作。E-mail: jiangsu@cug.edu.cn

  • 中图分类号: P631.4;P618.13

Seismic attribute characteristics of an ultradeep fractured-reservoir in the northern section of Shunbei No.5 strike-slip fault zone in Tarim Basin

  • 摘要:

    塔里木盆地顺北5号走滑断裂及其伴生裂缝的分布控制了储层的形成和油气的运聚成藏。如何选择对裂缝储层响应好的地震属性并用其描述储层的空间展布, 是裂缝型储层预测的研究基础。由于研究区不同尺度断裂裂缝发育规模差异较大及客观上存在地震分辨率的差异, 在实际研究过程中需要采用不同的技术方法及其组合对不同尺度和特征的断裂裂缝进行识别。地震属性对比测试表明倾角约束的高精度相干体和面状特征属性可表征断距超过40 m的大尺度断裂; 分频融合相干和应变能属性可表征断距15~40 m的中尺度断裂; 断裂似然体刻画和缝洞增强体可表征断距15 m以下的小尺度断层和裂缝。然后将典型地震属性与成像测井解释得到的实际裂缝数据及裂缝密度曲线进行相关性拟合, 进而优选出混沌属性、面状属性、结构张量第三分量、分频融合相干4种属性, 并将4种属性融合成新的属性用于裂缝密度体计算, 最后用该方法半定量预测裂缝的分布。裂缝预测结果表明以走滑断裂带中部的压扭性断裂处为中心, 约1.5 km范围的鹰山组下段地层整体裂缝最为发育, 为优势储层勘探开发区。

     

  • 图 1  主要断裂分布、典型地震测线及井的位置图(a)与塔里木盆地顺北研究区(b)(修改自文献[1])

    Figure 1.  Study area of northern Shunbei in Tarim Basin (b) and the distribution of major faults, seismic lines and wells (a)

    图 2  塔里木盆地顺北工区主要断裂统计图

    Figure 2.  Statistics of main faults in the Shunbei area of Tarim Basin

    图 3  塔里木盆地顺北5号断裂带北段T74、T80层位相干与断裂解释图

    a.T74界面相干属性切片;b.T74界面断裂解释;c.T80界面相干属性切片;d.T80界面断裂解释。1~9为断裂编号

    Figure 3.  Coherency and interpreted faults of the T74 and T80 horizons in Shunbei No.5 fault zone in Tarim Basin

    图 4  大中小尺度断裂示意图

    Figure 4.  Diagram of the large, medium and small scale faults

    图 5  大尺度断裂与相干体属性(a)及面状特征属性(b)叠合剖面图(XLine1053位置见图 1)

    Figure 5.  Overlap diagram of large scale faults and coherency (a), plane feature attribute (b)

    图 6  中尺度断裂与分频融合相干属性(a)和应变能属性(b)叠合剖面图(剖面XLine1024, XLine1022位置见图 1)

    Figure 6.  Overlap diagram of medium-scale faults and multi-coherent merge (a), strain-energy attributes (b)

    图 7  XLine1024剖面小尺度断裂裂缝与断裂似然体刻画缝洞增强体(a)和属性剖面图(b)(剖面XLine 1024位置见图 1)

    Figure 7.  Overlap diagram of medium-scale faults and fractures and multi-coherent merge (a), strain-energy attributes (b) in XLine1024 section

    图 8  XLine1044剖面基于结构张量梯度约束相干体与倾角导向相干体(a)和计算断裂似然体(b)刻画结果对比图(剖面位置XLine1044位置见图 1)

    Figure 8.  Comparison of calculated fracture thin likelihood results (b) based on structural tensor gradient constrained coherence and dip guided coherence (a) in XLine1044 section

    图 9  XLine1024剖面基于结构张量梯度约束相干体(a)与倾角导向相干体(b)计算缝洞增强体结果对比图(剖面位置XLine1024位置见图 1)

    Figure 9.  Comparison of Fracture-Gave Gain results based on structural tensor gradient constrained coherence (a) and dip guided coherence (b) in XLine1024 section

    图 10  XLine1019剖面过W-3井成像测井裂缝解释结果图(过井剖面XLine1019位置见图 1)

    a.W-3井成像测井解释结果图;b.测1井段在剖面中的位置展示

    Figure 10.  Fracture interpretation results of EMI in well W-3, XLine1019 section

    图 11  W-3井裂缝密度与混沌属性、面状特征、结构张量第三分量、分频融合相干相关性曲线对比图

    Figure 11.  Correlation of curves for fracture density with chaos, plane character, the third component of structure tensor, and frequency division coherence fusion in Well W-3

    图 12  研究区不同层界面裂缝密度体切片对比图

    Figure 12.  Comparison of fracture density at different horizons in the study area

    表  1  地震属性对断裂裂缝响应强度表

    Table  1.   Response strength of seismic attributes to fractures

    属性名称
    应力方位 瞬时振幅 瞬时频率 瞬时相位 线性特征
    中心频率 方位角 结构张量第一分量 倾角偏移量(CDP方向) 方向倾角
    倾角偏移量(测线方向) 最大曲率 最大负曲率 应变 纹理属性
    方差体 倾角 最大正曲率 蚂蚁体 应力方位
    断裂似然体 断裂似然体刻画 相似 连续 结构张量第三分量
    应变能 混沌 面状特征 断裂特征 相干体
    结构张量第二分量 缝洞增强体 分频融合相干
    下载: 导出CSV
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  • 收稿日期:  2021-01-08

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