新的气井定压试井分析方法  

A New Method for Testing Analysis of Gas Well Production at Constant Pressure

作　　者：罗银富[1] 马中良[2] 谢剑飞[3] 隆正峰[4] 依呷 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京102249 [2]中国石化华东分公司规划设计研究院,南京210036 [3]中国石油塔里木油田分公司,新疆库尔勒841000 [4]中国石油西南油气田公司川东北气矿,四川达州635000 [5]中海石油研究中心,北京100027

出　　处：《新疆石油地质》2008年第2期235-237,共3页Xinjiang Petroleum Geology

摘　　要：对于定压生产气井试井分析,由无因次产量的倒数和无因次时间构成的常规半对数图在考虑高速流动效应时需要进行修正。特别是当气藏渗透率高于1×10-3μm2时,试井分析结果会受到非达西流和储集层伤害的影响。提出了无限大储集层中考虑井筒周围气体高速非达西流影响的气井定压试井分析方法。该方法简单、直接,无需图版拟合或数据回归。实例分析表明,对于具备条件进行定流压生产测试的气井,只需单次定压试井测试,即可方便、准确地求取气藏储集层渗透率、非达西流因子和表皮因子。As for constant-pressure gas production, the conventional semi-log plot of the inverse of the dimensionless rate versus the dimensionless time must be modified to account for high-velocity flow effects. Especially when reservoir permeability is higher than 1 mD, the well test is affected by non-Darey flow and formation damage. This paper presents a new gas well testing analysis method considering gas well producing at constant pressure in infinite gas reservoir accounting for high velocity non-Darcy flow effects in vicinity of the well bore. This method is simple and direct and doesn＇t need type-curve matching or data regression. Case study shows that single constant pressure test can allow to precisely determine permeability, non-Darcy flow factor and skin factor of gas reservoir in gas well that constant-pressure well testing can be applied.

关 键 词：高速 非达西流 气井 试井 

分 类 号：TE353.1[石油与天然气工程—油气田开发工程]