石油学报 ›› 2012, Vol. 33 ›› Issue (S1): 80-88.DOI: 10.7623/syxb2012S1010

• 地质勘探 • 上一篇    下一篇

塔中北斜坡中-下奥陶统碳酸盐岩沉积储层特征及地质模式

袁圣强 1 贾承造 2 高日胜 1 潘文庆 3 侯福斗 4 齐建华 1 吴珍珍 1 法贵方 1   

  1. 1 中国石油勘探开发研究院 北京 100083;2 中国石油天然气集团公司 北京 100724;3 中国石油塔里木油田公司勘探开发研究院 新疆库尔勒 841000;4 中国石油天然气勘探开发公司 北京 100034
  • 收稿日期:2011-12-26 修回日期:2012-04-13 出版日期:2012-08-25 发布日期:2012-08-30
  • 通讯作者: 袁圣强
  • 作者简介:袁圣强,男,1982年8月生,2009年获中国科学院海洋研究所理学博士学位,现为中国石油勘探开发研究院海外综合业务部工程师,主要从事沉积储层及综合石油地质研究。
  • 基金资助:

    国家重大科技专项“海相碳酸盐岩沉积环境、岩相古地理研究与有利区带优选”(2008ZX05000-004-001)和国家重点基础研究发展计划(973)项目“南海深水盆地生物礁碳酸盐岩台地成因机理研究”(2009CB219406)资助。

Sedimentation characteristics and reservoir geological model of Mid-Lower Ordovician carbonate rock in Tazhong northern slope

YUAN Shengqiang 1 JIA Chengzao 2 GAO Risheng 1 PAN Wenqing 3 HOU Fudou 4 QI Jianhua 1 WU Zhenzhen 1 FA Guifang 1   

  • Received:2011-12-26 Revised:2012-04-13 Online:2012-08-25 Published:2012-08-30

摘要:

基于大量钻井取心及岩心薄片观察,成像测井、录井等资料分析及三维地震资料解释,在厘定塔里木盆地塔中北斜坡中-下奥陶统鹰山组和蓬莱坝组地震层序格架基础上,对其进行沉积古地貌恢复及储层研究,进而建立了相应的台地演化模式、储层演化模式及地质模式。该区蓬莱坝组沉积期为缓坡台地沉积模式,鹰山组沉积期为弱镶边台地沉积模式;其储层发育受沉积控制作用较强,与三级或四级层序界面暴露溶蚀及埋藏流体溶蚀关系密切,呈现准层状和孔洞型储层发育、沉积地貌分异小等特点;蓬莱坝组层(块)状白云岩是下步重要的勘探领域。

关键词: 塔中北斜坡, 中-下奥陶统, 碳酸盐岩, 沉积储层, 沉积古地貌, 储层演化模式, 储层地质模式

Abstract:

With a lot of drilling coring and core thin section observations, imaging logging and logging data, as well as 3D seismic data interpretation and on the basis of determining the seismic sequence stratigraphic framework of Yingshan Formation and Penglaiba Formation in the Mid-Lower Ordovician in Tanzhong northern slope of Tarim Basin, we conduct sedimentary paleogeomorphology restoration and reservoir research to further establish corresponding platform evolution model, reservoir evolution model and geological model. Penglaiba depositional period in the region is of gentle slope platform deposition model and Yingshan depositional period is of weak rimmed platform deposition model; reservoir development is under strong control of sedimentation, which is closely related to level 3 or level 4 sequence boundary exposure and corrosion as well as burial fluid corrosion and features quasi-layered and pored reservoir development, small depositional landform differentiation; the laminated or block dolomite reservoir in Penglaiba Formation will be the important exploration area in the next step.

Key words: Tazhong northern slope, Mid-Lower Ordovician, carbonate rock, sedimentary reservoir, sedimentary palaeogeomorphology, reservoir evolution model, reservoir geological model