对大庆油田油藏研究工作的几点认识

Understanding of Reservoir Study in Daqing Oil Field

阐述了多学科油藏研究与精细油藏描述的关系,提出了储层研究应细化到流动单元、体现宏观整体性、研究领域与方法应不断拓宽的发展方向。从决定原油采收率因素出发,分析了大庆油田在“调”、“驱”、“洗”及增加平面波及系数方面的潜力并估算了提高采收率的潜力。对加密井、水平井、厚油层水动力学调整、泡沫与凝胶及微生物调驱等几种层内调整方法进行了讨论,强调应注意长期水冲刷渗流、非达西渗流、重力作用、非等温渗流及色谱分离等理论的研究;并强调将油藏研究划分为四个技术板块,对低渗透油田应注重水动力作用、物理化学作用、微生物采油等技术的研究与应用。

In this paper,the relationship between the research on multidisciplinary reservoir and detailed reservoir characterization was discussed.It was established that the flowing unit should be during the research on reservoirs to display the macro-wholeness,and the research ranges and methods should be enlarged continuously.Based on the factors,which can determine the oil recovery ratio,the potential for profile control,oil displacement,oil flushing,and increasing areal sweepout efficiency,has been analyzed,and the potential for further improving the recovery ratio was estimated.Several intrabed adjustment methods,such as infill wells,horizontal wells,hydrodynamic adjustment in thick layers,flooding control with foam,gel and microbes,were discussed, and it was pointed that long term research should be done on theories about water washing filtering flow,non-Darcy filtering flow,gravitation,nonisothermal filtering flow,and chromatographic fractionation.It was put forward that research on reservoirs could be divided into 4 technical ranges.The stress should be layed on the research and application of hydrodynamic effect on low permeability oilfield,physical & chemical effect,and MEOR,et al.