摘要
哈萨克斯坦肯基亚克油田盐上稠油油藏具有埋藏浅、物性好、非均质性强、原油黏度高、边水较活跃等特点。经过40多年衰竭式开采,由于边水突进,导致油井高含水,但采出程度很低,油田长期处于低速、低效开发状态。针对这一问题,进行了热水驱、聚合物驱、饱和蒸汽驱、过热蒸汽驱的室内物理模拟和数值模拟对比研究。结果表明,盐上油藏中侏罗统油层采用300℃过热蒸汽驱油效率最高,平均达到88.2%,数值模拟研究其开发指标预测采出程度最高达到47.46%,显示注过热蒸汽适合该油藏储层特征,是当前开采状态的最佳开发方式。
Kenkiyak oil Field features high-viscosity oil, strong heterogeneity, shallow burial depth, high permeability and porosity, and huge edge water. After 40 years＇ depletion development, the seriously heterogeneous nature and water invasion make the watercut of oil wells as high as 76%. Furthermore, high oil viscosity and low flow ability result in low production and rapid declining of primary development. Therefore, the recovery factor of the reservoir is very low. The production is in an inefficient state for long time. In tackling this problem, the current development method has to be modified to become more efficient. Through physical and numerical simulations on hot water flooding, polymer driving, saturated steam driving, and superheat steam driving, it is indicated that 300℃ superheated steam flooding can greatly enhance the oil recovery, which may reach 47.46 percent on the Middle Jurassic reservoir. Therefore, the superheated steam injection is most suitable for the development of the reservoir.
出处
《科技导报》
CAS
CSCD
北大核心
2009年第6期29-33,共5页
Science & Technology Review
基金
中国石油天然气集团公司攻关课题(07G60201)
关键词
普通稠油
过热蒸汽驱
饱和蒸汽驱
热水驱
聚合物驱
ordinary heavy oil, superheat steam drive
saturated steam drive
hot water flooding
polymer flooding
