东方A气田浅海背景下莺歌海组“侧积”复合体成因机制分析
作者:
作者单位:

作者简介:

岳绍飞(1988—),男,河南新乡人,工程师,硕士,从事油气田开发地质研究工作。联系电话:18218435040,E-mail:yueshf2@cnooc.com.cn。

通讯作者:

基金项目:

中国海洋石油总公司科技项目“海上大型砂岩气藏开发中后期综合治理及开发策略研究”(CNOOC-KJ125 ZDXM06LTD04ZJ12)。


Analysis of formation mechanism of the lateral accretion packages in the Yinggehai Formation under the background of shallow sea in Dongfang A Gasfield,Yinggehai Basin
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    东方A气田莺歌海组二段发育典型的“侧积”复合体,该类区域具有较大的未动用储量,但存在开发风险。通 过地震、测井、录井等资料对“侧积”复合体的展布特征及成因机制进行研究,认为Ⅲa气组“侧积”复合体成因机制 是由于沉积时期形成水下地形高地,水流顺地势较低位置到达气组南区后发生侧向迁移所形成。Ⅱa气组“侧积” 复合体成因机制为沉积时期发育大规模的泥质水道侧向迁移所形成,分为低弯度型和高弯度型,高弯度型“侧积” 复合体分布在泥质水道末端,低弯度型“侧积”复合体分布在泥质水道中上游。由已钻井及地震资料分析可知,“侧 积”复合体内部储层含气性较差,顶部砂体具有一定连通性,布井时应布置在“侧积”复合体发育区的顶部。

    Abstract:

    The typical lateral accretion packages develop in the second member of Yinggehai Formation. There are large unexploited reserves with large risks in development in such areas. Based on the analysis of the seismic,well logging and mud logging data,the distribution characteristics and formation mechanism of the lateral accretion packages were studied. The study result shows that the lateral accretion packages in gas groupⅢa formed when the water flowed to the south of gas formation along the low position area and migrated laterally due to the underwater terrain highland in the period of deposition.The lateral accretion packages in gas groupⅡa formed due to the lateral migration of muddy channel,which can be classified into low bending packages and high bending packages in the depositional period. The high bending lateral accretion packages distribute in the terminal channel and the low bending packages distribute in the upstream channel. Combined with the analysis of drilling and seismic data,it is found that inner sandbodies in the packages has poor gas bearing property,and the top sand bodies are connected to some extent. The top of the lateral accretion packages should be considered when a well is deployed.

    参考文献
    相似文献
    引证文献
引用本文

岳绍飞,张辉,杨朝强,周伟,覃利娟,薛国庆.东方A气田浅海背景下莺歌海组“侧积”复合体成因机制分析[J].油气地质与采收率,2018,25(6):32~37

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2019-01-17
×
《油气地质与采收率》
《油气地质与采收率》启动新投稿网站的公告