石油与天然气地质 ›› 2008, Vol. 29 ›› Issue (1): 84-87.doi: 10.11743/ogg20080113

• 西部油气地质 • 上一篇    下一篇

压降法在涩北一号气田的应用

罗万静1, 唐海龙1, 王晓冬1, 范新文2   

  1. 1. 中国地质大学能源学院, 北京, 100083;
    2. 中国石油天然气股份有限公司, 青海油田分公司, 石油勘探开发研究院, 甘肃, 七里镇, 736202
  • 收稿日期:2007-07-09 出版日期:2008-02-24 发布日期:2012-01-16

Application of pressure-drop method to Sebei-1 gas field

Luo Wanjing1, Tang Hailong1, Wang Xiaodong1, Fan Xinwen2   

  1. 1. School of Energy Resources, China University of Geosciences, Beijing 100083, China;
    2. Research Institute of Petroleum Exploration and Development, Qinghai Oilfield Company, PetroChina, Qilizhen, Gansu 736202, China
  • Received:2007-07-09 Online:2008-02-24 Published:2012-01-16

PDF (PC)

682

被引次数

16

摘要：

涩北一号气田压力资料丰富,适合用压降法计算定容气藏的动态储量.利用涩北一号气田不同开发时刻的P/Z和Gp数据作图,得到3种类型的压降曲线,分别是直线型、后期上折型、后期下折型.其中,直线型表明生产中压力波及区域储层物性均匀以及生产平稳;后期上折型主要是受补孔所致,后期下折型主要是由边界效应和井间干扰所致.压降直线外推至P/Z=0时的储量即是动态储量,对后期上折型、后期下折型选取后期直线段外推得到其动态储量.

关键词: 动态储量, 压降法, 气井, 涩北一号气田

Abstract: Pressure testing data collected in Sebei-1 gas field are considered sufficient enough for calculating dynamic reserves of constant-volume gas reservoirs with pressure-drop method.By using the P/Z and Gp data acquired in different development stages in Sebei-1 gas field,three types of pressure-drop curves were mapped,including linear curve,late upward broken curve and late downward broken curve.The first type of curve indicates that reservoir poroperm characteristics are homogenous in the swept region and production is stable.While reperforation may generate the second type of curve and boundary effects and inter-well interference may induce the third type of curve.Accordingly,dynamic reserves can be calculated through extrapolating the straight pressure line until P/Z equals to 0,while for the later two types of curves,the calculation may be performed by selecting the late section of straight line and extrapolating it.

Key words: dynamic reserves, pressure-drop method, gas well, Sebei-1 gas field

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