岩性油气藏 ›› 2017, Vol. 29 ›› Issue (2): 1–9.doi: 10.3969/j.issn.1673-8926.2017.02.001

• 油气地质 •    下一篇

二连盆地白垩系地层岩性油藏的勘探发现及前景

赵贤正1, 王权2, 淡伟宁2, 王文英2, 乔晓霞2, 任春玲2   

  1. 1. 中国石油大港油田分公司, 天津 300280;
    2. 中国石油华北油田分公司 勘探开发研究院, 河北 任丘 062552
  • 收稿日期:2017-01-09 修回日期:2017-02-20 出版日期:2017-03-21 发布日期:2017-03-21
  • 通讯作者: 王权(1969-),男,博士,教授级高级工程师,主要从事陆相断陷油气成藏研究工作。Email:yjy_wquan@petrochina.com.cn。
  • 作者简介:赵贤正(1962-),男,博士,教授级高级工程师,主要从事石油地质综合研究与管理工作。地址:(300280)天津市滨海新区大港油田三号院。Email:xzzhao@petrochina.com.cn
  • 基金资助:
    中国石油天然气股份有限公司重大科技专项“华北油田上产稳产800 万吨关键技术研究与应用”（编号：2014E-35）资助

Exploration discovery and prospects of Cretaceous stratigraphic-lithologic reservoirs in Erlian Basin

ZHAO Xianzheng1, WANG Quan2, DAN Weining2, WANG Wenying2, QIAO Xiaoxia2, REN Chunling2   

  1. 1. PetroChina Dagang Oilfield Company, Tianjin 300280, China;
    2. Research Institute of Exploration and Development, PetroChina Huabei Oilfield Company, Renqiu 062552, Hebei, China
  • Received:2017-01-09 Revised:2017-02-20 Online:2017-03-21 Published:2017-03-21

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摘要： 二连盆地为中新生代小型断陷湖盆群，是一个重要的油气生产区，油气勘探早期以构造油藏为主要对象，但随着勘探程度的不断加深，构造油藏发现的难度越来越大，原油产量迅速下降。为了寻找新的油气勘探与储量接替新领域，重新认识了二连盆地的油气成藏条件，认为区内具有湖盆范围小、多物源、快速沉积及相带变化快的地质特点，具备形成地层岩性油藏的有利条件。因此，提出了将勘探重点由构造油藏转变为地层岩性油藏的新思路，并结合勘探实践，探索形成了“资源评价定潜力—构造研究找背景—沉积研究寻砂体—综合研究建模式—滚动评价定规模”的地层岩性油藏的研究与勘探新方法。以新的方法为指导，在勘探多年仍未取得突破的巴音都兰凹陷等含油凹陷实现了油气勘探的新突破；同时，在新发现的阿尔凹陷，借鉴以往富油凹陷勘探的成功经验，注重地层岩性油藏的勘探，高效、快速地发现了亿吨级的阿尔油田。二连盆地地层岩性油藏的成功勘探，不仅开辟了该盆地油气勘探的新领域，而且对类似盆地的油气勘探起到了重要的借鉴作用。

Abstract: The Erlian Basin is a group of small Meso-Cenozoic rift basin,which act as an important oil production zone. During its early stage,structural reservoirs were taken as the main objects. With the deepening of exploration, it is more difficult to find them,and the output of oil production declines rapidly. Therefore,it is urgent to search new fields of hydrocarbon exploration for reserve replacement. The hydrocarbon accumulation conditions of the Erlian Basin were understood again. It is characterized by small lake basins,multiple sources,rapid deposition and abrupt change of facies belt,which are favorable for the formation of stratigraphic-lithologic reservoirs. Therefore,a new exploration thought was proposed to change the exploration focus from structural reservoirs to stratigraphic-lithologic reservoirs. Based on exploration practice,the exploration method for the stratigraphic-lithologic reservoirs was developed:“evaluating resource to determine potential,studying structure to figure out the settings,analyzing sedimentation to search for sandbodies,comprehensive research to build the model,rolling evaluation to determine the scale”. By virtue of this method,hydrocarbon exploration is newly broken through in some sags where new oilfield has not been discovered for over 20 years,such as Bayindulan Sag. Meantime,in A'er Sag newly discovered,A'er oilfield with a hundred million reserves was discovered efficiently and quickly by focusing on stratigraphic-lithologic reservoirs according to the successful exploration experience of oil-rich sags. The success of stratigraphic-lithologic reservoirs exploration in the Erlian Basin launches the new hydrocarbon exploration fields in this basin,and can be used as the important reference for the hydrocarbon exploration in similar basins.

中图分类号: 

  • TE121.1
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