Second Fine Interpretation Of Well Test Data In Heshui Oil Area Of Xifeng Oilfield

At present,there is no mature well test interpretation method for ultra-low permeability and tight reservoirs.During the completion of this paper,we fully investigated the percolation theory,well test interpretation models and methods of low permeability reservoirs at home and abroad,and carried out fine interpretation for 512 oil and water wells in 18 blocks of No.12 oil production plant,and improved the two flow test method and pressure data interpretation method,This paper studies the well test interpretation model and method of water injection induced fracture,classifies the well test curves for three well types:oil well,water injection well and multi-stage fractured horizontal well,summarizes the characteristics and interpretation methods of each type of model,puts forward the pressure measurement suggestions for oil and water wells,and introduces the application of swift software in the secondary interpretation of well test data.Well test of No.12 oil production plant is an important representative in Changqing Oilfield.This project explores the interpretation mode of well test data in ultra-low permeability and tight reservoir with Changqing Oilfield characteristics,develops the well test data acquisition and fine interpretation technology in ultra-low permeability reservoir,and provides an important basis for water injection development adjustment and improvement of water injection development effect in Heshui oilfield.