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经过长期注水开采,油田进入开发中后期,油层内油、气、水交错渗流,剩余油的挖潜难度加大。剩余油分布研究主要从剩余油分布研究方法、剩余油分布特征、剩余油分布控制因素三方面进行。本文总结了剩余油分布及挖潜技术状况和最新进展,提出完善井网、周期注水、补孔改层等挖潜措施。
After long-term water injection and exploitation, the oilfields enter into the middle and later stages of development. The oil, gas and water cross-seepage flow in the reservoir layer makes it more difficult to tap the remaining oil. The remaining oil distribution research mainly from the remaining oil distribution research methods, the remaining oil distribution characteristics, the remaining oil distribution control factors. This paper summarizes the remaining oil distribution and tapping the potential of the state of the technology and the latest progress, proposed to improve the well pattern, the cycle of water injection, fill holes and other potential tapping measures.