石油勘探与开发 >

2017 , Vol. 44 >Issue 6: 896 - 906

DOI: https://doi.org/10.11698/PED.2017.06.07

油气勘探

咸化湖盆深部优质储集层形成机制与分布规律——以渤海湾盆地济阳坳陷渤南洼陷古近系沙河街组四段上亚段为例

  • 孟涛 ,
  • 刘鹏 ,
  • 邱隆伟 ,
  • 王永诗 ,
  • 刘雅利 ,
  • 林红梅 ,
  • 程付启 ,
  • 曲长胜
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  • 1. 中国石油大学（华东）地球科学与技术学院,山东青岛 266555;
    2. 中国石化胜利油田分公司勘探开发研究院,山东东营 257015
孟涛（1979-）,男,山东乐陵人,中国石化胜利油田勘探开发研究院副研究员,现为中国石油大学（华东）在读博士研究生,主要从事油气勘探研究。地址：山东省青岛经济技术开发区长江西路66号,中国石油大学（华东）地球科学与技术学院,邮政编码：266555。E-mail：mengtao7988@163.com 联系作者简介：刘鹏（1986-）,男,河南濮阳人,博士,中国石化胜利油田勘探开发研究院副研究员,主要从事沉积学与储集层地质学研究。地址：山东省东营市东营区聊城路2号,中国石化胜利油田勘探开发研究院沾车勘探研究室,邮政编码：257015。E-mail：liupeng119.slyt@sinopec.com

收稿日期: 2017-05-25

  修回日期: 2017-10-26

  网络出版日期: 2017-11-24

基金资助

国家科技重大专项“渤海湾盆地南部油气资源潜力再认识”（2011ZX05006-001）; 中国石化股份有限公司科技攻关项目“济阳坳陷非常规与常规油气藏形成机制统一性与分布相关性研究”（P16005）

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Formation and distribution of the high quality reservoirs in a deep saline lacustrine basin: A case study from the upper part of the 4th member of Paleogene Shahejie Formation in Bonan sag, Jiyang depression, Bohai Bay Basin, East China

  • MENG Tao ,
  • LIU Peng ,
  • QIU Longwei ,
  • WANG Yongshi ,
  • LIU Yali ,
  • LIN Hongmei ,
  • CHENG Fuqi ,
  • QU Changsheng
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  • 1. College of Geo-Science and Technique, China University of Petroleum (Huadong), Qingdao 266555, China;
    2. Research Institute of Petroleum Exploration and Development, Shengli Oilfield Company, SINOPEC, Dongying 257015, China

Received date: 2017-05-25

  Revised date: 2017-10-26

  Online published: 2017-11-24

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摘要

以渤海湾盆地济阳坳陷渤南洼陷古近系沙河街组四段上亚段为例,基于钻井取心,开展岩心常规分析、铸体和普通薄片鉴定、扫描电镜分析以及流体包裹体测试,依据所获数据资料系统研究咸化湖盆成岩环境演化及深部优质储集层发育主控因素。该咸化湖盆储集体经历了先碱后酸、碱酸交替的成岩环境,早期碱性成岩环境下大量碳酸盐胶结物充填原生孔隙,使储集体孔隙度由初始37.30%锐减到18.77%,也使原生孔隙免于压实,保留可溶蚀空间。中后期酸性成岩环境下,早期碳酸盐胶结物溶蚀增孔10.59%,深部优质储集层得以形成。膏盐岩、烃源岩、断裂体系及沉积体展布共同控制优质储集层分布,渤南洼陷沙河街组四段上亚段深部优质储集层位于北部陡坡带,埋深为

本文引用格式

孟涛 , 刘鹏 , 邱隆伟 , 王永诗 , 刘雅利 , 林红梅 , 程付启 , 曲长胜 . 咸化湖盆深部优质储集层形成机制与分布规律——以渤海湾盆地济阳坳陷渤南洼陷古近系沙河街组四段上亚段为例[J]. 石油勘探与开发, 2017 , 44(6) : 896 -906 . DOI: 10.11698/PED.2017.06.07

Abstract

The upper part of the 4th member of Paleogene Shahejie Formation in Bonan sag, Bohai Bay Basin, East China was taken as the study object. Conventional core analysis, casting and conventional thin section inspection, scanning electron microscope observation, particle size analysis and fluid inclusion analysis were carried out on cores, and the data from these analyses and tests was used to find out the evolution of diagenetic environment of the saline lacustrine basin and the main factors controlling the deep formation of high quality reservoirs. The diagenetic environment of the saline lacustrine basin experienced alkali and acid alternation. In the early alkali diagenetic environment, large amounts of carbonate cement filled the primary pores, making the reservoir porosity reduce sharply from 37.3% to 18.77%, meanwhile, keeping the primary pores from compaction, and retaining the dissolution space. In the middle-late stage of acid diagenetic environment, early carbonate cement was dissolved, resulting in rise of reservoir porosity by 10.59%, and thus the formation of the deep high quality reservoirs. The distribution of high quality deep reservoirs is controlled by the development of gypsum salt rock, source rock, fracture system and sedimentary body distribution jointly. Deeply buried high quality reservoirs in the upper part of the 4th member of the Shahejie Formation in Bonan sag are nearshore subaqueous fan-end sandstone and some fan-medium fine conglomerate buried at 3 4004 400 m in the north steep slope.

Key words： Bohai Bay Basin; Bonan sag; 4th member of Paleogene Shahejie Formation; saline lacustrine basin; high quality reservoir; formation mechanism

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