西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (4): 64-66.DOI: 10.3863/j.issn.1674-5086.2009.04.013

• 石油与天然气工程 • 上一篇    下一篇

裂缝性凝析气藏物质平衡方程计算新方法

李勇1 李保柱1 胡永乐1 彭晖2 夏静1   

  1. 1.中国石油勘探开发研究院油气田开发所,北京海淀100083;2.香港天地能源服务公司,北京朝阳100022
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-08-20 发布日期:2009-08-20

A NEW CALCULATION APPROACH OF MATERIAL BALANCE EQUATION FOR FRACTURED GAS CONDENSATE RESERVOIR

LI Yong1 LI Bao-zhu1 HU Yong-le1 PENG Hui2 XIA Jing1   

  1. 1.Research Institute of Petroleum Exploration and Development,PetrolChina,Haidian Beijing 100083,China;2.Tian di Energy Ltd.,Chaoyang Beijing 100083,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-08-20 Published:2009-08-20

摘要: 裂缝性凝析气藏是一种极其复杂的气藏,其物质平衡方程与常规气藏差别较大。以物质平衡基本原理为基础,考虑岩块系统和裂缝系统压缩系数、束缚水饱和度的不同,建立了考虑双孔隙系统的裂缝性凝析气藏新的物质平衡方程,通过该方程的诊断直线可分别求得裂缝系统和岩块系统的凝析气地质储量。通过建立单井数值模拟概念模型,使用模拟计算的压力、产量数据,采用新方法计算裂缝和岩块系统凝析气储量,与概念模型实际储量对比误差很小,从而验证了方法的正确性。采用某裂缝性凝析气田实际生产数据,应用新的物质平衡方法计算结果表明,该方法可以准确计算裂缝性凝析气藏裂缝及岩块系统的凝析气储量。

关键词: 裂缝性油藏, 物质平衡方程, 凝析气藏, 诊断直线, 储量

Abstract: The fractured gas condensate reservoir is very complicated gas reservoir,its material balance equation differs from that for conventional gas reservoir greatly.Based on the principle of material balance,the new material balance equation for fractured gas condensate reservoir is established by considering dual-porosity system,as well as the difference of the compressibility between rock block system and fracutre system and irreducible water saturation,the diagnostic plot from the equation can be used for calculate the gas condensate geologic reserve of fracture system and rock block system.By means of establishment of the concept model of single well numerical simulation,the pressure and deliverability data are calculated by using the model,the comparision of the gas condensate reserve of fracture and rock block systems calculated with the method and the practical reserve proves the correction of the method.The practical production data from a certain fractured gas condensate reservoir is used for calculation by applying the new material balance method,result indicates the method can be used for calculating the fractures of fractured gas condensate reservoir and the gas condensate reserve of rock block system accurately.

Key words: fractured reservoir, material balance equation, gas condensate reservoir, diagnostic plot, reserve

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