石油与天然气地质 ›› 1997, Vol. 18 ›› Issue (3): 195-198.doi: 10.11743/ogg19970305

• 论文 • 上一篇    下一篇

致密碳酸盐岩缝洞型有水气藏的储量计算──以四川盆地下二叠统气藏为例

陆正元1, 王洪辉1, 张高信2, 王守冲2   

  1. 1. 成都理工学院, 四川成都 610059;
    2. 四川石油管理局川东开发公司, 重庆 630021
  • 收稿日期:1995-11-27 出版日期:1997-09-25 发布日期:2012-01-18
  • 基金项目:

    "油气藏地质及开发工程"国家重点试验室资助项目(9603)

RESERVE CALCULATION OF FRACTURE CAVED WATER BEARING GAS RESERVOIRS IN DENSE CARBONATE ROCKS-AN EXAMPLE OF LOWER PERMIAN GAS POOLS

Lu Zhengyuan1, Wang Honghui1, Zhang Gaoxin2, Wang Shouchong2   

  1. 1. Chengdu Institute of Technology, Chengdu, Sichuan;
    2. East Sichuan Development Co., Sichuan Petroleum Administration
  • Received:1995-11-27 Online:1997-09-25 Published:2012-01-18

PDF (PC)

894

被引次数

11

摘要：

四川盆地下二叠统缝洞型气藏为致密碳酸盐岩单一缝洞气藏,地下总空间体积不大,地层水水体有限,区域上没有连片水体存在,因而气藏中地层水弹性能量可不予考虑,地层水的产出不应视为边水或底水的侵入,而是气藏中天然气弹性驱动的结果。据此将由气水共同占据的单一缝洞气藏作为一个整体,并可认为在气水产出过程中气藏储集空间保持不变,运用物质平衡法原理推导出有水缝洞型气藏的储量计算方法G=(Wp/Bg)+Gp / Pi/Zi-P/Z/ Pi/Zi。对于未产气只产水的缝洞系统,通过一段时间的排水,可利用该方法判断水体上方的天然气储量。

关键词: 致密碳酸盐岩, 缝洞型, 有水气藏, 储量计算, 物质平衡法

Abstract:

The fracture caved gas reservoirs of Lower Permian in Sichuan Basin are a kind of dense carbonate monotonic fracture caved reservoirs.The total subsurface space volume of the reservoirs is not large,the formation water body is limited and no areal continuous water exists. The elastic drive energy of formation water in the reservoirs would be negligible,formation water outflow is the result of gas elastic drive rather than the intrusion of edge water or bottom water. On this base, the water-gas reservoir of monotonic fracture cave type could be considered as a whole, and the reservoirs space would remain unchanged.Thus the reserve calculating equation of the reservoir could be deduced:G=(Wp/Bg)+Gp / Pi/Zi-P/Z/ Pi/Zi.As for those produce water only,this equation could also be used to calculate the gas reserve above formation water after a period of water outflow.