摘要
高饱和油藏的饱和压力较高、地饱压差小,油藏水驱开发效果易受到开采制度的影响。基于实际高饱和油藏的特点,综合应用油藏工程分析和典型模型数值模拟的研究方法,研究了高饱和油藏的开发特点、多相渗流对油藏生产能力的影响;在此基础上,计算分析了在不同开发阶段、不同地饱压差条件下,注水时机、注采比对开发效果的影响,确定了高饱和油藏的极限注水时机和合理注水时机,以及不同开发阶段时的合理注采比。研究结果为此类高饱和油藏的合理开发提供了技术支持。
Because of high - saturated reservoir with high saturation pressure and small formation - saturation pressure difference ,the effects of water flooding are easily influenced by the exploitation system. Based on the actual characteristics of high -saturated reservoir,the development characteristics of high- saturated reservoir and the effects of multi -phase seep-age on the reservoir production capacity were studied by integrated application of reservoir engineering analysis and numerical simulation. On the basis,the influence of timing of water injection and injection - production ratio on development effect were analyzed in conditions of different development stages and various formation -saturation pressure difference. Thus,the limiting and resonable timing of water injection for high -saturated reservoir, and the reasonable injection -production ratio were determined. Research results provided technical support for reasonable development of the reservoir.
出处
《复杂油气藏》
2011年第4期37-40,58,共5页
Complex Hydrocarbon Reservoirs
关键词
高饱和油藏
注水时机
注采比
压力恢复速度
high- saturated reservoir
timing of water injection
injection- production ratio
pressure recovery rate
