摘要
低渗致密气藏储量在我国天然气储量中占有较大比例。但在实际生产中,低渗致密气藏中气井的产能测试和资料处理却比较困难,文中利用气藏物质平衡、产能方程和启动压力方程联解,建立了利用气井生产动态数据直接求取气井的启动压力、获取气井产能特征方法。该方法仅需利用采气曲线就可以获得气井的产能方程和启动压力,并应用于现场实例计算,结果表明该方法有较强的实用性。
For low-permeability tight gas reservoirs, the reserves take a great proportion in China, but it is relatively difficult to have the well deliverability test and data processing in actual producing performance. Based on mass balance equation, deliverability equation and starting pressure equation, this paper establishes a method to obtain directly starting pressure and well deliverability properties by taking advantage of production performance data,. This method only requires the gas recovery curve to achieve both gas well deliverability equation and starting pressure. Furthermore, the method was applied to case study. Results indicate that it is comparatively practical and effective.
出处
《天然气勘探与开发》
2007年第2期41-43,49,共4页
Natural Gas Exploration and Development
基金
中石化重点攻关项目"特低渗气藏渗流机理及低渗储量有效动用基础理论研究"项目资助
关键词
低渗透气藏
产能测试
产能方程
压力方程联解
low-permeability gas reservoir, well deliverability test, deliverability equation, pressure equation
作者简介
熊钰，男，1968年出生，副教授；主要从事油气藏工程、注气提高采收率和流体相态的研究和教学工作。地址：（610500）四川省成都市新都区新都大道8号西南石油大学。电话：（028）83033082或13981823875。E-mail：xiongyu-swpi@126．com.
