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油田进入开发后期，为了控制高渗层的注水量，加强中、低渗层的注水，需要从监测注入水的动态入手掌握分层吸水状况。分注井直接测试技术采用偏孔直接测试和井筒流动测试两种途径，测试进入每一个层段的注水量、分层压力温度，较真实地反映了各层段的吸水状况，并在测试过程中验证注水封隔器的密封性，不会造成地居污染。应用层面流褶积试井理论分析层段压力、流量资料，得到层段渗透率、表皮系数、吸水指数等资料。18井次现场测试表明，该技术是掌握注水现状、搞好注水结构调整的一项行之有效的动态监测手段。
In the late stage of oilfield development, in order to control the water injection amount of high permeable layer and strengthen the water injection in middle and low permeable layers, it is necessary to grasp the stratified water absorption status from the dynamic monitoring of injected water. Direct injection well test technology using direct hole test and wellbore flow test two ways to test the water injection into each interval, stratification pressure temperature, a more realistic reflection of the water absorption of the various layers, and in the testing process In the verification of water packer seal, will not cause pollution. Applying the theory of layer convolution test to analyze the pressure and flow data in the interval, the permeability, skin coefficient and water absorption index of the interval are obtained. 18 in-situ tests show that the technology is an effective dynamic monitoring method that grasps the status of waterflooding and does a good job of waterflood structure adjustment.