断块油气田中高含水期提高采收率工艺技术探讨

IOR TECHNOLOGIES FOR FAULT BLOCK RESERVOIRS AT MID-HIGH WATER CUT STAGE

目前各国注水油田中高含水期调整都是以水动力学方法为主。从强化注水与改变注水方式、堵水与调剖技术、低渗透油田的压后处理技术、复合联作技术和高新技术在提高采收率技术工艺应用等方面，探讨了断块油气田中高含水期提高采收率工艺技术；指出：水动力学调整方法工艺比较简单，成功率高，效果显著，经济效益好。在油田的具体调整过程中，一般都采用多种措施相结合的万法，可以相互弥补不足之处，能取得更大的经济效益，高新技术的发展可推进提高采收率技术工艺的进一步提高。

At present, the main adjustment technology for water injection oilfields at mid high water cut stage both at home and abroad is based on hydrodynamics. This paper discusses the IOR technologies for fault block reservoirs at mid-high water cut stage based on the field application of technologies such as enhanced water injection, changed water injection mode, water shutoff and profile control, post - fracturing treatment of low permeability oilfields, complex association operation and other high and new technologies. From the above, this paper concludes: the hydrodynamics adjustment technology is simple, with more successful opportunities, obvious effect and good economic benefit; when conducting actual adjustment in oilfields, a combination method of multi -measures is generally adopted, for by which more economic benefit can be achieved. The development of the high and new technologies can further enhance the IOR technology.