摘要
低渗透储层具有应力敏感性、启动压力等极其复杂的渗流特征,不宜采用衰竭方式进行开发,也不宜采用大压差进行生产。本文通过一个实例验证得出,无论是否考虑应力敏感,随着初始产能的增加,稳产期和稳产期采收率都会下降,只是,考虑应力敏感比不考虑应力敏感时下降的幅度更大。并且,考虑到应力敏感效应,气井的配产不宜过大,否则会影响稳产期采出程度。
Due to produced gases, reservoir pressure declines, and permeability and productivity of wells decrease correspondingly, which is called stress sensibility.The flow eharacterist-ics in low-permeability reservoirs are extremely complex due to their stress-sensitivity and starting pressure, etc. it can not be developed by depletion and also not be produced thr-ough using high pressure difference. This paper describes a result from an example,wheth-er consider stress sensibility or not, with the increasing of initial productivity, period of sta-bilized production and its recovery will decrease,but,the decrease is biger when stress sebs-ibility is considered.And,considering stress sensibility, and the proration production of gas w-ell should not too large,otherwise it will affect the degree of reserve recovery during period of stabilized production.
出处
《河北理工大学学报（自然科学版）》
CAS
2011年第1期7-11,共5页
Journal of Hebei Polytechnic University:Social Science Edition
关键词
低渗透气藏
应力敏感
稳产期采收率
采出程度
low-permeability reservoirs
stress-sensitivity
recovery during period of stabilized production
degree of reserve recovery
