摘要
针对低渗储层,裂缝侧向存在大量死油区、微裂缝和隔夹层发育等问题,通过向储层裂缝加入暂堵剂提高缝内净压力开启微裂缝,实现裂缝转向,并在纵向突破隔夹层的限制,更大程度地动用剩余油。经过多年研究和现场应用,暂堵压裂形成了缝口暂堵压裂、缝内暂堵压裂、多缝压裂和复合缝网压裂等4项工艺技术,现场大量试验和应用证明暂堵压裂可以达到很好的增油效果。
There exist lots of inert oil area,microfracs,and barriers in the radial direction of the fractures in low-permeability reservoirs. Adding temporary plugging agent into the fractures can increase the net pressure in the fissure to start microfracs,diverting the direction of the fractures and breaking the constraints of the barriers longitudinally,thus more oil can be recovered. Through years of study,4 processes are developed,which are temporary plugging frac at the fissure opening,inside the fissures,in multiple fissures and in composite fissure networks. Quite a lot tests and applications prove the temporary plugging frac has remarkably enhanced the production.
出处
《钻采工艺》
北大核心
2017年第3期65-67,共3页
Drilling & Production Technology
关键词
暂堵压裂
缝内净压力
微裂缝
裂缝转向
剩余油
temporary plugging frac
in-fissure net pressure
microfrac
diverting of fracture
remaining oil
