摘要
根据底水河道型油藏的特点并结合生产实际,提出以1口水平井合采多个底水河道型油藏的新模型。首先通过Newmann乘积、Laplace变换及其数值反演方法给出对应模型中水平井开发单一底水河道型油藏时不定常渗流控制方程组定产条件下的压力分布,通过Duhamel褶积得到井底定压时的产量解式,然后推导出定产和定压条件下合采2个底水河道型油藏时产量劈分情况,以此推广到合采多个储层的情形,给出两河道初始压力不相等时"倒灌"量的变化曲线。研究表明,水平井合采底水河道型储层时,是否增产与各河道初始压力的对比情况存在很大关系。研究结果可用于水平井开发河道型油藏的产能评价和预测。
A new model of commingling production of several channel reservoirs with bottom water by using one horizontal well is presented according to reservoir characteristics and production practice.First,the pressure distribution of the indeterminate influent control equation set is presented for single channel reservoir with bottom water developed by horizontal well at constant rate by using Newmann product,Laplace transform and numerical inversion methods,and the production formula with constant bottom hole pressure is obtained by Duhamel convolution.Then,the production contributions from two channel reservoirs in commingling production under constant pressure and constant rate are derived.This can be spread to commingling production of multiple reservoirs.The curve of 'intrusive flow' volume is given for the condition when the initial pressures between two channel reservoirs are different.The study shows that the incremental production of commingling production with horizontal well for channel reservoirs with bottom water is closely related to the contrast of initial pressures between channels.The result of this study can be used to evaluate and predict channel reservoir productivity developed by horizontal well.
出处
《特种油气藏》
CAS
CSCD
2010年第3期83-86,共4页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"复杂油气田地质与提高采收率技术"(2009ZX05009-004-03)
关键词
底水河道型油藏
水平井
合采
GREEN函数
LAPLACE变换
产能评价
channel reservoir with bottom water
horizontal well
commingling production
Green function
Laplace transform
productivity evaluation
作者简介
赵文琪（1985-），男，2007年毕业于中国石油大学（华东）材料成型及控制工程专业，现为中国地质大学（北京）在读硕士研究生，主要研究方向为油气藏渗流力学和数值模拟。
