介绍了石油大学和中原石油勘探局联合建成的全尺寸多功能模拟实验井供液系统及其专用设备的设计原理、机械结构和工作特性。该系统可以分别控制和计量油、气、水三相流体的流量，井下混合器可将油、气、水三相充分混合，通过多路管线将混合液送入井下，可以模拟出分层开采的地层条件，为完成各种人工举升实验提供了基础条件。 This paper introduces the design principle, mechanical structure and working characteristics of a full-scale multi-purpose simulation experimental well liquid supply system and its special equipment jointly established by the Petroleum University and the Central Plains Petroleum Exploration Bureau. The system can separately control and measure the flow of oil, gas and water three-phase fluid. The downhole mixer can fully mix the oil, gas and water three phases, send the mixed liquid downhole through multiple pipelines, and can simulate the stratified mining Of the formation conditions, in order to complete a variety of artificial lift experiments provide the basic conditions.