摘要
针对国内应用注气开发的低渗透油藏,开发了一种新型水-气分散体系制备装置,利用蒸发-冷凝制取水-气分散体系,用以降低流度。利用该装置测试了不同条件下体系的流度降低能力,通过室内验评价了提高采收率效果。结果表明:温度、压力以及水气比是影响体系控制流度能力的重要因素。渗透率在0.1×10^(-3)~4.5×10^(-3)μm^(2),水-气分散体系可提高采出程度3%~10%,渗透率越高,扩大波及体积效果越好。
Aiming at the low-permeability reservoir developed by domestic gas injection,a new type of water-gas dispersion system preparation device has been developed.Its main principle is to prepare controllable reduction vapor dispersion system by evaporation-condensation.The fluidity reduction capacity of the system was tested under different conditions,and the effect of enhanced oil recovery was evaluated by indoor core test.The results show that temperature,pressure and water-gas ratio are important factors affecting the ability of the system to control fluidity.When the permeability is between 0.1×10^(-3)to 4.5×10^(-3)μm^(2),the water-gas dispersion system can increase the recovery degree by 3%and 10%.The higher the permeability,the better the effect of expanding the sweep volume.
作者
葛罗
Ge Luo(No.6 Working Area of the No.6 Oil Production Plant of Daqing Oilfield Limited Liability Company,Daqing 163114,Heilongjiang,China)
出处
《精细石油化工》
CAS
2023年第1期9-13,共5页
Speciality Petrochemicals
基金
东北石油大学青年科学基金(2019QNL-22)。
关键词
水-气分散体系
低渗透
流度降低因子
提高采收率
water-gas disperse system
low permeability
mobility reduction factor
enhanced oil recovery
