Develop of Downhole Simulation Tests Device near the Pump Suction for Corrosion

Abstract

At present, the corrosion of the casing near downhole pump suction port is common in some domestic oilfield. In order to study the corrosion mechanism, we design and manufacture a dynamic simulation test device for the corrosion of the casing near downhole pump suction port.The device adopts the single plunger pump and tube and casing string in line with site structure to simulate the intermittent production mode of pump as well as the fluids flow state near the pump inlet adequately, and achieves the corrosion velocity measurement and the research of corrosion behavior under different temperature, CO2 partial pressure, and velocity. The preliminary experimental results show that the test device has the advantages of reasonable structure, strong simulation and practicality; it provides new methods of testing for the related experimental study under the condition of different corrosion mechanism and has good application prospects.