无机颗粒型堵剂试验研究——复合段塞控水封窜技术之二

Experimental Study on Inorganic Particle-type Blocking Agent——Part Ⅱ:Water-control and Channel-blocking with Composite Slugs

孤岛油田注聚区层内或层间非均质性严重,注聚过程中聚合物易沿高渗孔道窜进,使得部分注入井油压低,对应油井高见聚,严重影响聚合物驱开发效果。针对这一问题,研究应用了复合段塞控水封窜技术之无机颗粒型堵剂。堵剂具有较好的悬浮性,注入性能优良,强度较高,有较好的封堵效果。

Heterogeneity was serious inside the polymer injecting areas or in interlayer of Gudao Oilfield,during the polymer flooding,it was easy channeling along the high permeability pores,thus part of the injected wells were in low pressure condition,polymer breakthrough was induced in corresponding wells,it seriously influenced the effect of oilfield development.In consideration of the problems,the technique of inorganic particle-type blocking agent of composite slugs of water control and channeling blocking is used for solving the problems.It has good suspension ability,high performance and high strength and better sealing effect.