石油与天然气地质 ›› 1995, Vol. 16 ›› Issue (1): 39-44.doi: 10.11743/ogg19950105

• 论文 • 上一篇    下一篇

鄂中坳陷石炭系进油期孔隙及储集岩类型

汪华敏, 艾华国, 刘兰兰   

  1. 湖北荆沙地质矿产部石油地质综合大队, 湖北荆沙, 434100
  • 收稿日期:1992-06-10 修回日期:1994-08-22 出版日期:1995-03-25 发布日期:2012-01-16

POROSITY OF OIL-ENTERING PERIODS AND RESERVOIR ROCK TYPES OF CARBONIFEROUS IN CENTRAL HUBEI DEPRESSION

Wang Huamin, Ai Huaguo, Lui Lanlan   

  1. Comprehensive Research institute of Petroleum Geology, MGMR, Jingsha, Hubei
  • Received:1992-06-10 Revised:1994-08-22 Online:1995-03-25 Published:2012-01-16

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摘要：

鄂中坳陷石炭纪进油期主要有两期：印支期及燕山期。进油期孔隙主要有三类,即早期暴露溶蚀孔隙、晚期浅部溶蚀孔隙、晚期深部溶蚀孔隙。粉晶白云岩类、微一亮晶颗粒白云(灰)岩类、蓝藻有孔虫白云岩类、泥一微晶角砾白云岩类及泥晶灰岩类等5类借集岩主要发育于黄龙组下段,该段为本区主要储集层。

关键词: 生油期, 进油期, 进油期孔隙, 储集岩类型

Abstract:

The oil-entering periods of the Carboniferous in Central Hubei Depression could mainly be divided into two stages:Indo-China and Yenshan Epoches.The porosity types during the periods consists of exposed corrosion porosity in early stage,shallow-layer corrosion porosity and deep-seated corrosion porosity in the late stage.The reservoir rocks corresponding to the porosity types include:1.powder-fine crystal dolomitite;2.microspar dolomitite(or microsparite);3.dolomitite that is formed of blue-green algae and foraminifer;4.micritic breccia dolomitite;5.micritic limestone.Dolomitites in the lower part of the Carboniferous Huanglong Formation is the main reservoir bed among all in this region since it has more types of reservoir spaces and higher porosity during the periods;the secondary one is the microspar granular limestone in the upper part of the formation.