综合处理提高油层难采储量的采收率

The Comprehensive Technology of Improving Oil Recovery for Hard-produced Reservoir

综合处理工艺是基于对非均质开采层的渗滤场，通过注水井和采油井进行化学剂处理，以便同时提高油藏的波及面积和驱油程度。波及面积的提高是靠控制驱替剂在非均质地层中的方向性作用，使驱替剂渗入难以驱替的含油层带，而在酸化之前向地层中注入定量的化学剂，以阻止酸法渗入高渗透层。该综合处理工艺在亚柯夫油田间П—1＋2层进行了矿场试验。结果表明：难以采出的原油储量来出率提高10％～12％；增产100t原油需化学剂1t。本工艺技术获乌克兰专利。

By the chemical floods processes for injection and production well,and comprehensive technology used to increase the permeability of non-homogeneous formation. Sweeping area and driving efficiency have greater improvement in hard-produced reservoir. The Sweeping area is improved by controlling the orientation of the floods which permeated into non-homogeneous formation- The floods is allowed to permeated into hard-displaced reservoir. A certain amount of chemical floods is injected into formation before the course of acidization to prevent acid fluid flowing into high permeable formation. The field test of the comprehensive technology is carried out in formation n - 1 + 2, Yakefu Oil Field. The results show that the recovery of hard-produced resevoir has been improved up 10~12 percent. Every 100tonnes of increase in production need l ton of the chemicals. The technology has obtained one of Ukraine patents.