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辽西凸起斜坡区风化壳油气运移特征及控藏作用

李虹霖 郭涛 张如才 杨传超 张明升

李虹霖, 郭涛, 张如才, 杨传超, 张明升. 辽西凸起斜坡区风化壳油气运移特征及控藏作用[J]. 地质科技通报, 2022, 41(4): 109-116. doi: 10.19509/j.cnki.dzkq.2022.0130
引用本文: 李虹霖, 郭涛, 张如才, 杨传超, 张明升. 辽西凸起斜坡区风化壳油气运移特征及控藏作用[J]. 地质科技通报, 2022, 41(4): 109-116. doi: 10.19509/j.cnki.dzkq.2022.0130
Li Honglin, Guo Tao, Zhang Rucai, Yang Chuanchao, Zhang Mingsheng. Hydrocarbon migration characteristics and its controlling effect on hydrocarbon accumulation of weathering crust in slope area of Liaoxi Uplift[J]. Bulletin of Geological Science and Technology, 2022, 41(4): 109-116. doi: 10.19509/j.cnki.dzkq.2022.0130
Citation: Li Honglin, Guo Tao, Zhang Rucai, Yang Chuanchao, Zhang Mingsheng. Hydrocarbon migration characteristics and its controlling effect on hydrocarbon accumulation of weathering crust in slope area of Liaoxi Uplift[J]. Bulletin of Geological Science and Technology, 2022, 41(4): 109-116. doi: 10.19509/j.cnki.dzkq.2022.0130

辽西凸起斜坡区风化壳油气运移特征及控藏作用

doi: 10.19509/j.cnki.dzkq.2022.0130
基金项目: 

中海石油(中国)有限公司"七年行动计划"重大科技专项课题"渤海油田上产4 000万t新领域勘探关键技术" CNOOC-KJ135ZDXM36TJ08TJ

详细信息
    作者简介:

    李虹霖(1989-), 男, 工程师, 主要从事油气勘探综合研究工作。E-mail: lihl56@cnooc.com.cn

  • 中图分类号: P618.13

Hydrocarbon migration characteristics and its controlling effect on hydrocarbon accumulation of weathering crust in slope area of Liaoxi Uplift

  • 摘要:

    随着勘探程度的提高, 小型复杂断块圈闭已成为当前凸起区油气勘探的重点领域, 为了明确辽西凸起断块圈闭油气差异富集的原因, 利用三维地震、测录井、薄片等数据资料, 通过三维流线定量模拟的方法, 分析凸起斜坡区潜山顶面风化壳特征, 建立"壳-断"耦合油气运移模式, 刻画斜坡区油气优势运移路径, 从而明确风化壳运移对凸起断块油气差异富集的控制作用。结果表明: ①研究区潜山历经多期构造运动, 且潜山岩性主要为下古生界碳酸盐岩和太古界花岗岩, 岩性性质较脆, 易被风化剥蚀, 风化壳溶蚀孔隙及构造裂缝普遍发育, 且分布稳定, 形成斜坡区油气侧向长距离运移的主要通道; ②斜坡中带受反向断层控制形成断隆构造, 油气沿风化壳的运移受斜坡断隆带遮挡, 形成"壳-断"耦合油气运移模式, 断隆带断距大小控制风化壳油气侧向运移能力; ③利用三维流线定量模拟的方法, 刻画出研究区四级油气优势运移通道, 明确不同级别油气运移通道对凸起断块油气富集程度的控制作用。该研究成果有效指导辽西凸起油气勘探实践, 并填补了富油凹陷成熟凸起区油气成藏认识及研究方法。

     

  • 图 1  研究区区域位置及构造纲要图(剖面见区域位置图AB)

    T2.新近系底界;T3.东三段底界;T5.古近系底界;T8.沙二段底界;T3M.东二段底界;下同

    Figure 1.  Regional location and structure of the research area

    图 2  潜山风化壳岩心及镜下薄片观察

    Figure 2.  Observation of weathering crust core and microscopic thin section of buried hill

    图 3  潜山风化壳曲率及蚂蚁体追踪属性分布

    Figure 3.  Curvature of weathering crust of buried hill and attribute distribution of Ant-tracking

    图 4  “壳-断”耦合油气运移机制

    Figure 4.  "Crust-fault" coupling oil and gas migration mechanism

    图 5  “壳-断”耦合油气成藏模式

    Figure 5.  "Crust-fault" coupling hydrocarbon accumulation model

    图 6  研究区三维油气运聚模拟及优势运移通道划分

    Figure 6.  Three dimensional simulation of oil and gas migration and accumulation and division of dominant migration channels in the study area

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  • 收稿日期:  2021-08-18
  • 网络出版日期:  2022-09-07

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