摘要
现场资料表明,注水开发的油井在井底流压很低时,随着生产压差的增大,油井产液量并没有上升,而是下降。其流入动态曲线凹向压力轴,出现一个拐点。在考虑流动能力系数的基础上,修正了经典的Vogel方程。建立了新型油井流入动态模型。计算实例表明,当流压低到一定程度后I,PR曲线出现拐点,与现场生产实际情况符合。
Performance data indicates that the production of waterflooding oilfields doesn＇ t increase but declines with the production pressure increasing when the bottom-hole flow pressure is very low. And their IPR cures concave to the pressure axis and show a turning point. Considering the flow ability correction coefficient, the classic Vogel equation was modified, and a new IPR model was established. The actual example shows that a turning point appearances in the IPR cure when the bottom-hole flow pressure is lowed to certain extent. This is correspond to the actual situation of on-site production.
出处
《科学技术与工程》
北大核心
2012年第24期5994-5996,共3页
Science Technology and Engineering
基金
863课题(2009AA063404)资助
关键词
低渗透油田
流入动态
流动能力修正系数
拐点
产能预测
low permeability oilfield inflow performance flow ability correction coefficient turning point productivity prediction
