大庆石油地质与开发2017，Vol.36Issue(3)：163-167,5.DOI:10.3969/J.ISSN.1000-3754.2017.03.029
致密气藏压胀松动井产能预测模型
PRODUCTIVITY PREDICTING MODEL OF THE DILATANT LOOSENED WELL IN THE TIGHT GAS RESERVOIR
摘要
Abstract
In view of the loosened area resulted from the dilatant loosening simulation for the gas well in tight gas reservoirs,on the basis of the steady seepage theory,considering the mutual influence among the slippage effect,start-up pressure gradient and stress sensitivity the reservoirs,the well predicting model was established after the simulation,and moreover with the help of the case history analysis,the influencing factors of the gas well productivity were figured out.The achievements show that the gas well productivity declines with the rises of the start-up pressure gradient and permeability deformation coefficient,in detail,Value n has a little influence on the productivity,the less Value m is,the more the productivity will decrease,but along with the slippage factor enlargement,the productivity continues to increase;in the stage of the high flowing pressure,the radius of the dilatancy has small effect on the gas well productivity,while with the drop of the bottom-hole pressure,the corresponding effect enhances to a certain degree.关键词
致密气藏/压胀松动/启动压力梯度/滑脱效应/应力敏感/产能预测Key words
tight gas reservoir/dilatant loosening/start-up pressure gradient/slippage effect/stress sensitivity/productivity prediction分类
能源科技引用本文复制引用
李敬松,刘汝敏,吴英,李洪..致密气藏压胀松动井产能预测模型[J].大庆石油地质与开发,2017,36(3):163-167,5.基金项目
国家科技重大专项“致密油气藏数值模拟新方法与开发设计”(2016ZX05009-005). （2016ZX05009-005）
