摘要
"二三结合"开发主要面向层数增多、非均质性更严重的二、三类油层,其水驱后注聚渗流特征与常规主力油层注聚相比具有较大差异,对剩余油挖潜和产量接替的影响更大。利用油藏数值模拟方法,模拟"二三结合"开发模式聚驱阶段不同聚合物相对分子质量、不同聚合物浓度及不同聚合物注入速度,研究了不同聚合物参数对"二三结合"开发模式原射孔层和补孔层的压力、含水饱和度等渗流特征的影响。结果表明:聚合物相对分子质量对补孔层的含水饱和度有所影响;聚合物浓度对压力影响较大;聚合物注入速度对原射孔层及补孔层的分流率有很大影响。研究成果为"二三结合"合理挖潜和提高原油采收率提供了科学依据。
The second tertiary combined model is applied to develop the second and third type reservoirs which have more oil layer quantity and strong anisotropism, compared to the regular main reservoir with polymer injection, whose seepage charac- teristics of polymer-injection-after-water-drive shows a remarkable difference, in addition. This development appears to have a larger effect on the remaining oil development and production. Simulating the second tertiary combined model by reservoir numerical simulation under different polymer molecular weight, polymer concentration, polymer injection rate on the polymer injection period, conclusions of the influenced seepage characteristics of original and added perforated interval pressure and water saturation are drawn. The conclusion shows that the polymer molecular weight could influence water saturation of added perforated interval; polymer concentration makes a significant impact on reservoir pressure; polymer injection rate has a greatinfluence on the separate rate of original and added perforated interval. This research provides firm science evidence to the theo- ry of the second tertiary combined model to develop and enhance oil injection-production rate.
出处
《河北科技大学学报》
CAS
2015年第3期324-329,共6页
Journal of Hebei University of Science and Technology
基金
国家科技重大专项(2011ZX05010-002-003)
关键词
渗流力学
二三结合
聚合物相对分子质量
聚合物浓度
注入速度
压力
含水饱和度
percolation mechanics
the second tertiary combined
polymer molecular weight
polymer concentration
injectionrate
pressure
water saturation
