摘要
关于局部不渗透区的存在对生产井井底压力曲线动态影响的研究已开展近20年,但关于对产量递减曲线影响的研究未见报道。基于边界元法推导得到了不稳定产量预测计算方法,研究了局部不渗透区对碳酸盐岩油藏产量递减曲线的影响。研究发现,局部不渗透区能显著降低井产量;不渗透区离井距离不变(d=800)时,不渗透区半径越大,产量降低越多;不渗透区半径不变(rv=400)时,不渗透区离井距离越小,产量降低越多。
The influence of impermeable sub-region on production wellbore pressure curve has been studied over 20 years, but the influence on production decline curve has ever reported. Basing on boundary element meth- od, the unsteady production calculating method was derived, and the influence of impermeable sub-region on pro- duction decline curve of carbonate reservoir was studied. Research showed that, impermeable sub-region can effec- tively reduce well production, when distance from well was invariant（ d = 800）, bigger radius of impermeable sub- region, bigger production reduction appeared; when radius of impermeable sub-region was invariant （rv = 400）, smaller distance from well, bigger production reduction appeared.
出处
《科学技术与工程》
北大核心
2013年第1期39-42,共4页
Science Technology and Engineering
基金
国家重大专项-高压气藏高效安全开发技术研究(2011zx05015)资助
关键词
局部不渗透
碳酸盐岩油藏
边界元法
产量递减
impermeable sub-region unsteady production prediction boundary element method pro-duction decline
