摘要
提出了采出程度递减率定义,在给定初期采油速度的前提下,根据油相相对渗透率变化曲线推导出不同生产时间、不同油田产水率下的老井理论自然递减率,并对某油田老井理论自然递减率进行了实例分析。分析结果表明,实际自然递减率随生产时间和含水先变大后变小,理论自然递减率高于实际自然递减率,但变化趋势一致。
In order to analyze a reasonable oil production decline amount and control of oilfield,decline rate of the old well is studied.Recovery degree decline definition is put forward,the oil production rate in the initial condition is given,according to the relative permeability curve come from experiments to deduce the natural decline rate of the old well with different oilfield water cuts and different production stages.The natural decline rate of old well in Qingxin Oilfield,as production time and water cut increase,the production decline rate increases first and then decreases,the natural decline is higher than the actual decline rate,however,they are of same trend.is higher than the actual decline rate however they are of same trend.
出处
《长江大学学报（自科版）（中旬）》
CAS
2013年第5期78-80,6,共3页
Journal of Yangtze University(Nature Science Edition)
