石油与天然气地质 ›› 1996, Vol. 17 ›› Issue (2): 96-101.doi: 10.11743/ogg19960202

• 论文 • 上一篇    下一篇

盖层类型及其对油气运移聚集的控制作用

郑朝阳, 张文达, 朱盘良   

  1. 地质矿产部石油地质中心实验室, 江苏无锡 214151
  • 收稿日期:1996-01-03 修回日期:1996-02-29 出版日期:1996-06-25 发布日期:2012-01-16
  • 基金项目:

    “八五”国家重点科技攻关项目(85-102-01-03-05)

COVER TYPES AND THEIR CONTROL OVER HYDROCARBON MIGRATION AND ACCUMULATION

Zheng Chaoyang, Zhang Wenda, Zhu Panliang   

  1. Central Laboratory of Petroleum Geology, MGMR, Wuxi, Jiangsu
  • Received:1996-01-03 Revised:1996-02-29 Online:1996-06-25 Published:2012-01-16

PDF (PC)

1074

被引次数

49

摘要：

根据盖层封盖机理与岩石孔隙结构的关系,把盖层分为微孔型和微缝型两类。微孔型盖层饱压比值曲线呈单峰态,峰值他压比大于3.0×10-2MPa-1,多位于中浅层(源岩生油窗之上),不仅构成油气的直接盖层,而且与流体高能面配合,能形成高效的区域盖层。微缝型盖层由微孔型盖层演化而来,饱压比值曲线具多峰态,峰值他压比小于3.0×10-2MPa-1,多位于中深层(源岩生油窗之下),主要起直接盖层作用,作为区域盖层则效率较低。

关键词: 盖层, 微孔型, 微缝型, 识别参数, 油气聚集, 控制作用

Abstract:

Based on the relationship between sealing mechanism and rock pore texture, the covering strata can be diyided into micro-pore type and micro-fracture type. The former has monopeak saturation-pressure ratio curve and the peak saturation-pressure ratio is greater than 3. 0?10-2MPa-1: the later has multi-peak curves of saturation-pressure ratio, the peak saturation-pressure ratio is less than 3. 0?10-2MPa-1. The micro-fracture cover beds are the evolution result of micro-pore cover beds, and are mainly buried in mid-deep depth (below oilwindow) : the micro-pore cover beds are mainly distributed shallower (above oil-window). The micro-pore type could not only be the direct cover bed of hydrocarbon, but also could form high quality regional covering strata in association with high energy fluid surface: the micro-fracture type could only be the direct cover bed.