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本文讨论的是大庆油田萨中地区特低渗透层注水井的注水问题。在萨、葡油层过渡带和高台子油层过渡带的一些特低渗透层注水井,油层破裂压力在15.7MPa 左右,这部分注水井占注水井总数的8.9%,这部分井纳入一般高、低压注水系统是完不成配注量的,故此采取了增压注水措施,即井口区域单泵增压注水。另外文内对如何选井、如何选泵以及增压注水的经济效果和有待进一步解决的问题也作了阐述。
This article discusses the water injection in the ultra-low permeability injection well in Sazhong area, Daqing Oilfield. In some ultra-low permeable water injection wells in transitional zone between Sa, Pu reservoir and Gaotaizi reservoir, the fracturing pressure of oil layer is about 15.7MPa, which accounts for 8.9% of the total number of injection wells. This part of well incorporates general high and low pressure Water injection system is not finished with the amount of injection, so take a pressurized water injection measures, that is, single-head pressurized water wellhead area. In addition, the text also elaborates on the economic effect of how to choose wells, how to choose pumps and pressurized water injection and the problems to be further solved.