扶余油田东区水驱转注蒸汽开发可行性研究及矿场实践

Feasibility study and field practice of water flooding converting to steam flooding in the east of Fuyu oilfield

扶余油田东区属于普通稠油油藏,注水开发30a,已进入高含水开发阶段,存在采油速度低、采出程度低、无效水循环严重等问题。通过物理模拟和数值模拟研究,确定东区水驱后可转为注蒸汽方式开发,进而优选合理的井网方式和蒸汽注入参数。2007～2008年,通过现场试验,注蒸汽方式开发获得较好的效果,为改善开发效果、提高采收率提供了技术支持。

The east of Fuyu oilfield belongs to conventional heavy oil reservoir, has been water flooded for 30 years and entered high water cut stage, and has problems of low oil recovery rate, low recovery percent of reserves, and invalid water circulation. Physical and numerical simulations have determined that converting to steam flooding is a feasible way after water flooding in the east of Fuyu oilfield, and the rational way of well pattern conversion and steam injection parameters are optimized. The field test conducted in 2007-2008 had achieved good result and provided technical support for improving development response and recovery factor in this area.