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被盖层分隔储层油源断裂输导油气有效时期厘定方法及其应用

梁木桂 付广 董金梦 李乔乔

梁木桂, 付广, 董金梦, 李乔乔. 被盖层分隔储层油源断裂输导油气有效时期厘定方法及其应用[J]. 工程科学学报. doi: 10.13374/j.issn2095-9389.2021.01.28.001
引用本文: 梁木桂, 付广, 董金梦, 李乔乔. 被盖层分隔储层油源断裂输导油气有效时期厘定方法及其应用[J]. 工程科学学报. doi: 10.13374/j.issn2095-9389.2021.01.28.001
LIANG Mu-gui, FU Guang, DONG Jin-meng, LI Qiao-qiao. Determination method and its application of effective period for transporting oil and gas by the oil source fault of reservoir separated by caprock[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2021.01.28.001
Citation: LIANG Mu-gui, FU Guang, DONG Jin-meng, LI Qiao-qiao. Determination method and its application of effective period for transporting oil and gas by the oil source fault of reservoir separated by caprock[J]. Chinese Journal of Engineering. doi: 10.13374/j.issn2095-9389.2021.01.28.001

被盖层分隔储层油源断裂输导油气有效时期厘定方法及其应用

doi: 10.13374/j.issn2095-9389.2021.01.28.001
基金项目: 国家自然科学基金资助项目(41872157,42072157)
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    通讯作者:

    E-mail: fuguang2008@126.com

  • 中图分类号: TE122.1

Determination method and its application of effective period for transporting oil and gas by the oil source fault of reservoir separated by caprock

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  • 摘要: 为了准确研究含油气盆地被盖层分隔储层油源断裂在油气成藏中的作用,在被盖层分隔储层油源断裂输导油气机理及有效时期研究的基础上,通过断裂停止活动时期、断裂开始破坏泥岩盖层封闭能力时期和断裂填充物开始封闭时期确定出油源断裂输导油气时期,利用源岩地化特征确定出源岩排烃时期,将二者叠合建立了一套被盖层分隔储层油源断裂输导油气有效时期的厘定方法。应用结果表明:在测线L2处F1油源断裂向东一段储层输导油气有效时期相对较长,为5.3 Ma,较有利于油气在东一段储层中运聚成藏(目前构造高部位尚未钻探);在测线L8处F1油源断裂向东一段储层输导油气有效时期相对较短,为2.4 Ma,且主要为断裂填充物输导油气,不利于油气在东一段储层中大规模运聚成藏,和F1油源断裂在测线L8附近东一段虽已发现油气,但规模有限一致。该方法可有效用于厘定被盖层分隔储层油源断裂输导油气有效时期。

     

  • 图  1  被盖层分隔储层油源断裂输导油气时期构成示意

    Figure  1.  Composition of the period for transporting oil and gas by the oil source fault of the reservoir separated by caprock

    图  2  被盖层分隔储层油源断裂输导油气有效时期厘定示意

    Figure  2.  Determination of the effective period for transporting oil and gas by the oil source fault of the reservoir separated by caprock

    图  3  断裂填充物排替压力预测示意

    Figure  3.  Prediction of the displacement pressure of the fault filler

    图  4  南堡5号构造F1油源断裂与油气分布关系.(a)平面图;(b)剖面图

    Figure  4.  Distribution of the F1 oil source fault and hydrocarbon in Nanpu 5th structure: (a) plan; (b) section views

    图  5  F1油源断裂在不同层位生长指数分布

    Figure  5.  Distribution of the growth index of the F1 oil source fault in different layers

    图  6  南堡5号构造F1油源断裂不同测线处东二段泥岩盖层断接厚度

    Figure  6.  Juxtaposition thickness of the mudstone caprock of E3d2 in the F1 oil source fault of the Nanpu 5th structure

    图  7  F1油源断裂开始破坏东二段泥岩盖层封闭能力时期厘定

    Figure  7.  Determination of the period when the F1 oil source fault started to destroy the sealing capacity of the mudstone caprock of E3d2

    图  8  在东二段泥岩盖层内F1油源断裂填充物开始封闭时期厘定.(a)测线L2;(b)测线L8

    Figure  8.  Determination of the period when the F1 oil source fault fillers began sealing in the mudstone caprock of E3d2: (a) line L2; (b) line L8

    图  9  F1油源断裂向东一段储层输导油气有效时期厘定.(a)测线L2;(b)测线L8

    Figure  9.  Determination of the effective period for transporting oil and gas from the F1 oil source fault to the reservoir of E3d1: (a) line L2; (b) line L8

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