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双宽地震资料在东海X气田河道砂体预测中的应用

胡伟 秦德文 李琴 俞伟哲 黄鋆

胡伟, 秦德文, 李琴, 等. 双宽地震资料在东海X气田河道砂体预测中的应用[J]. CT理论与应用研究, 2022, 31(3): 293-304. DOI: 10.15953/j.ctta.2021.017
引用本文: 胡伟, 秦德文, 李琴, 等. 双宽地震资料在东海X气田河道砂体预测中的应用[J]. CT理论与应用研究, 2022, 31(3): 293-304. DOI: 10.15953/j.ctta.2021.017
HU W, QIN D W, LI Q, et al. Application of double width seismic data to channel sand body prediction of X gas field in the East China Sea[J]. CT Theory and Applications, 2022, 31(3): 293-304. DOI: 10.15953/j.ctta.2021.017. (in Chinese)
Citation: HU W, QIN D W, LI Q, et al. Application of double width seismic data to channel sand body prediction of X gas field in the East China Sea[J]. CT Theory and Applications, 2022, 31(3): 293-304. DOI: 10.15953/j.ctta.2021.017. (in Chinese)

双宽地震资料在东海X气田河道砂体预测中的应用

doi: 10.15953/j.ctta.2021.017
基金项目: 中国海油“七年行动计划”东海专项课题(西湖凹陷西部地区勘探开发关键技术研究(CNOOC-KJ 135 ZDXM39 SH01))
详细信息
    作者简介:

    胡伟:男,中海石油(中国)有限公司上海分公司研究院工程师,主要从事海洋石油勘探研究工作,E-mail:huwei3@cnooc.com.cn

  • 中图分类号: P  315;P  631

Application of Double Width Seismic Data to Channel Sand Body Prediction of X Gas Field in the East China Sea

  • 摘要: 东海X气田主力储层埋藏深、横向变化大,常规地震资料品质较差、分辨率低,满足不了勘探开发中日益精细的地质需求。采用三船四源斜缆的采集方式获得宽频宽方位的地震资料,其具有高分辨率、高信噪比、高保真度的特征。应用宽频宽方位地震资料高分辨率、各向异性的优势信息,结合叠前同时反演,求取分方位的河道砂体敏感弹性参数反演体,并且把垂直于河道走向的多个方位反演体进行叠加,从而进行河道砂体的精细预测。相比于常规地震资料,基于宽频宽方位地震资料的储层反演提高了河道砂体的预测精度,为东海X气田的滚动勘探与开发开采奠定了基础。

     

  • 图  1  宽方位地震采集观测系统

    Figure  1.  Observation system for wide azimuth seismic data acquisition

    图  2  宽方位地震方位角玫瑰图

    Figure  2.  Rose diagram of azimuth of wide azimuth seismic data

    图  3  双宽地震资料与常规地震资料剖面对比

    Figure  3.  Comparison of profiles between double width seismic data and conventional seismic data

    图  4  双宽地震资料与常规地震资料时间切片对比

    Figure  4.  Comparison of time slices between double width seismic data and conventional seismic data

    图  5  双宽地震资料与常规地震资料频宽对比

    Figure  5.  Comparison of bandwidth between double width seismic data and conventional seismic data

    图  6  双宽地震资料与常规地震资料反演对比

    Figure  6.  Comparison of Inversion result between double width seismic data and conventional seismic data

    图  7  河道砂体预测示意图

    Figure  7.  Schematic diagram of channel sand body prediction

    图  8  河道砂体预测流程

    Figure  8.  Channel sand body prediction process

    图  11  H5层河道砂体预测平面展布

    Figure  11.  Prediction plane distribution of channel sand body in layer H5

    图  9  岩石物理交汇分析

    Figure  9.  Petrophysical intersection analysis

    图  10  优势方位角反演剖面

    Figure  10.  Inversion profile of dominant azimuth

    图  12  双宽地震资料与常规地震资料H5层反演对比

    Figure  12.  Comparison of inversion results of layer H5 between double width seismic data and conventional seismic data

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出版历程
  • 收稿日期:  2021-10-15
  • 录用日期:  2021-11-29
  • 网络出版日期:  2021-12-09
  • 刊出日期:  2022-05-23

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