Research On The Interpretation Method Of Delaminate Dynamic Parameters In Layered Water Injection Wells

According to the reservoir static data and developing dynamic data, knows the oil lay geologic deposit characters of the different layout of the well pattern in the west of south 2-3 zone and the developing stastus of the zone.Primarily,because the pressure fall well test data of layered water injection well is affected by the loss of flow plug, The effect of well bore storage are both created by the continuous flow.The common interpretation methods can create more error.So we can not use the early period data to interpret every layered water injection well pressure fall well test on south 2-3 zone. On the basis of flow plug loss and use the pressure corrective method on the continuous flow of resume period.By contrast and analysis,draw the conclusion that under the different strate conditions the continuous volume of flow is degressive. And get the data of layered pressure fall curve behind the flow plug. By the correction of pressure fall well test data of layered water injection well at last we get a straight line in which the relative coefficient is the highest, we can use conventional well tset interpretation methods to interpret dynamic parameters such as strata pressure. Analysis and compare with layered test-pressure data.we can prove that this method can eliminate the loss of flow plug and partly effect of the wellbore storage, can get the layered dynamic parameters of the layered water injection well that satisfied the demand of the engineering.and we give out the application examples using this method to interpret the excessive high pressur area of south 2,3 zone Gaotaizi oil layer.