产能递减分析新方法及应用--以大牛地致密气藏为例  

New method and application for deliverability decline analysis:Taking Daniudi tight gas reservoir as an example

作　　者：杨志浩[1] 李治平[1] 陈奎[2] 任广磊[2] 赖枫鹏[1] 

机构地区：[1]中国地质大学(北京)非常规天然气能源地质评价与开发工程北京市重点实验室,能源学院,北京100083 [2]中国石化华北分公司勘探开发研究院,河南郑州450006

出　　处：《断块油气田》2015年第4期484-487,共4页Fault-Block Oil & Gas Field

基　　金：国家油气重大专项课题“新一代油藏数值模拟软件”(2011ZX05009-006)

摘　　要：产能是一个生产能力参数,研究气井的产能递减规律能更好地指导气井的配产。目前还没有成熟的产能递减分析方法,特别是对于大牛地这类致密气藏。文中采用产能递减方法和一点法结合的方式,形成了一种分析致密气井产能的新方法。先根据一点法经验公式计算出无阻流量,再判断其产能递减规律确定递减类型,最终反推测试压力下无阻流量。将此方法应用于大牛地气田,得到的预测无阻流量与实际无阻流量误差小于15%;此外还介绍了这种新方法的3种应用形式,对气藏生产具有符合实际的指导意义。Deliverability is a production capacity parameter, so it is very helpful to research the deliverability to guide the proration of gas well. There is not a mature method for deliverability decline analysis, especially for tight gas reservoirs in Daniudi Gas Field.This paper uses single-point well test analysis method with deliverability decline analysis to form a new method to analyze deliverability. First, according to the single-point well test, it calculates the open-flow capacity, then determines the decline type,finally reverses thrust test pressure open-flow capacity. The result using this method to analyze Daniudi Gas Field shows that the error is below 15%. Furthermore, this paper describes three application forms of this new method.

关 键 词：产能递减 一点法 无阻流量 动态分析 致密气藏 大牛地气田 

分 类 号：TE332[石油与天然气工程—油气田开发工程]