油气藏评价与开发 ›› 2022, Vol. 12 ›› Issue (1): 181-191.doi: 10.13809/j.cnki.cn32-1825/te.2022.01.016

• 页岩油 • 上一篇    下一篇

咸化断陷湖盆典型页岩剖面地质特征——以东营凹陷为例

王永诗1(),唐东2   

  1. 1.中国石化胜利油田分公司,山东 东营257000
    2.中国石化胜利油田分公司勘探开发研究院,山东 东营257015
  • 收稿日期:2021-11-26 出版日期:2022-02-26 发布日期:2022-03-24
  • 作者简介:王永诗(1964—),男,博士,教授级高级工程师,现从事石油地质研究与油气勘探管理工作。地址:山东省东营市东营区济南路125号,邮政编码:257000。E-mail: wangysh623@sina.com
  • 基金资助:
    中国石化科技攻关项目“东部断陷盆地页岩油目标评价与先导试验”(P20049-3)

Geological characteristics of typical shale profile in a saline lacustrine rift basin: A case study of Dongying sag

WANG Yongshi1(),TANG Dong2   

  1. 1. Sinopec Shengli Oilfield Company, Dongying, Shandong 257000, China
    2. Research Institute of Exploration and Development, Sinopec Shengli Oilfield Company, Dongying, Shandong 257015, China
  • Received:2021-11-26 Online:2022-02-26 Published:2022-03-24

摘要:

基于丰富的岩心、测井、地震资料,综合运用层序地层学、矿物学、沉积学等研究方法,宏观与微观分析相结合,对东营凹陷沙四上—沙三下亚段页岩剖面进行了系统解剖。研究表明:①咸化湖盆页岩矿物组成以富含碳酸盐为特征,主要发育富灰质页岩相和灰质页岩相为主的剖面相组合;②断陷湖盆深水页岩层序具有淹没不整合型层序特点,东营凹陷沙四上—沙三下亚段页岩剖面可以划分出2个三级层序、4个四级层序(体系域)、8个五级层序(准层序组);③页岩岩相发育分布与层序具有明显的耦合关系,湖晚期湖扩体系域和早期高位体系域是富灰质页岩相有利发育段。研究认识对咸化断陷湖盆页岩层序划分及岩相分布预测具有一定的指导意义。

关键词: 页岩剖面, 碳酸盐, 岩相, 层序, 东营凹陷

Abstract:

Based on the abundant core, logging curves, seismic data, sequence stratigraphy, mineralogy, sedimentology and other research methods, the systematic dissection of shales in the upper and lower member of The Fourth and third member of the Shahejie formation in Dongying Sag was carried out by combining macro and micro analysis. The research results show that: ① The mineral composition of shale in saline lacustrine basin is characterized by rich carbonate, and there are mainly high content carbonate shale facies and calcareous shale facies. ② The deep-water shale sequence of the lacustrine rift basin is characterized by inundation unintegrated sequence. The shale section of the Upper Es4 - Lower Es3 sub-member in Dongying Sag can be divided into two third-order sequences, four fourth-order sequences (system tracts) and eight fifth-order sequences (parasequence groups). ③ There is an obvious coupling relationship between shale lithofacies and sequence. The late lacustrine extensional system tract and early high system tract are the favorable stages of high content carbonate shale facies. The research and understanding have certain guiding significance for the division of shale sequence and the prediction of lithofacies distribution in saline lacustrine rift basins.

Key words: shale profile, carbonate, lithofacies, sequence stratigraphy, Dongying Sag

中图分类号: 

  • TE132