Study On Layered Oilfield Water Injection Well Flow Regularity

Oil-field waterflooding is the main producing method on onshore oilfield at present。It can complement layer energy efficiently,it is important for improving oilfield recovery and ensuring oilfield high and stable production 。But because of layer′s anisotropy,it is low efficiency if we inject water to layer。The layer should be divided rationally to inject water into each layer and the rate of flow should following the request。The rule of flow should be researched fluid flow was allocated in well at the process of fluid flow was allocated in well when waterwas inject into layer。 This article divides the fluid flow in well into three parts, The experiment of local resistance coefficient ofnozzle and the rule of flow coefficient was conducted when the testing apparatus had been built to establish the loss curve of nozzlepressure。 The software of water distribution was made to improve the efficiency of water distribution and set up a reasonable system ofThe experiment of localresistance coefficient of nozzle and the rule of flow coefficient was conducted when the testing apparatus had been built to establish theloss curve of nozzle pressure。 The software of water distribution was made to improve the efficiency of water distribution and set up areasonable system of injecting water.In order to improve the efficiency of water distribution and reduce the work of operator, a series of experiments was conducted in the lab。Through the unsteady flow equation of motion in wellbore was built,the wellbore pressure distribution rule was establed。The experiment of local resistance coefficient of nozzle and the rule of flow coefficient was conducted when the testing apparatus had been built to establish the loss curve of nozzle pressure。The software of water distribution was made to improve the efficiency of water distribution and set up a reasonable system of injecting water。...