低渗透气藏气井产能预测新方法  

A New Method for Production Prediction of Gas Wells in Low Permeability Reservoirs

作　　者：孟琦[1] 刘红兵[1] 万鹤 任登峰 代然 Meng Qi;Liu Hongbing;Wan He;Ren Dengfeng;Dai Ran(Tianjin Petroleum Vocational and Technical College,Tianjin 610500,China;Research Institute of Petroleum Engineering in Tarim Oilfield,Tarim,Xinjiang 841000,China)

机构地区：[1]天津石油职业技术学院,天津301607 [2]塔里木油田工程研究院,新疆库尔勒841000

出　　处：《非常规油气》2018年第2期50-54,共5页Unconventional Oil & Gas

摘　　要：低渗透气藏具有低孔、低渗、高含水、储层应力敏感性较强等地质特点,其储层渗流规律较常规气藏更为复杂,需要考虑的因素也更多。本文利用新的拟压力建立了考虑启动压力、滑脱效应和应力敏感性的三项式产能方程;提出了利用Excel快速、准确确定三项式系数的方法。通过实例分析证明了新的三项式产能方程的准确性和确定三项式系数方法的有效性,为低渗透气藏气井产能预测和合理配产提供了重要的理论依据。The low permeability gas reservoir has the geological characteristics of small low porosity,low permeability,high water saturation and strong reservoir stress sensitivity;its reservoir seepage law is more complicated than conventional gas reservoir,more factors need to consider.In this paper,using the new quasi pressure built the new trinomial deliverability equation consider start-up pressure,gradient,slippage effect,stress sensitivity.Put forward a method to determine the trinomial,coefficient using the Excel quickly and accurately.Through the example analysis,proved the veracity of the new trinomial deliverability equation and the effectiveness of the method to determine the trinomial coefficient,provided an important theoretical basis for productivity forecast and rational production allocation of gas wells of low-permeability gas reservoirs.

关 键 词：低气藏 三项式 产能方程 新方法 

分 类 号：TE328[石油与天然气工程—油气田开发工程]