Research on the operation plan of parallel and mixed transportation of long-distance crude oil pipelines
To achieve the operation of the Jihui and Jinghui lines at the third oil transmis-sion station in Changqing oilfield without the use of pour point depressants and drag reduc-ing agents,aiming at energy conservation and consumption reduction,a study on blended transportation operation mode is conducted through modeling and simulation.Firstly,estab-lish the pipeline network simulation model,utilizing historical data from the past five years for model debugging and validation,ensuring the model accuracy of over 95％and accurately depicting the hydraulic and thermal characteristics of the real pipeline network.Then,ana-lyze the hydraulic and thermal distribution along the pipeline after blended transportation,integrating the equipment and pipeline conditions at various stations to investigate the feasi-bility of blended transportation.Next,by controlling the boundary conditions,simulate and analyze the volume and temperature control range of blended transportation.Finally,on-site experiments are conducted to validate the results by comparing the theoretical and actual cases.The results indicate th at by diverting a portion of the crude oil from the Jihui line to the Youhui line via the Jima secondary line or newly constructed connecting lines,it is feasi-ble for the Jihui line to operate without drag reducing agents and the Youhui line without pour point depressants.According to the oil transmission plan,the maximum diversion capacity is 320 m3/h,with a minimum requirement of 182 m3/h.The lowest outlet temperature in winter is 57℃,representing a reduction of 33℃ compared to before blended transportation.The on-site validation and application imply that the research findings are consistent with the on-site operational results,resulting in energy conservation and consumption reduction.
crude oil pipelineparallel pipeline blending transportpipeline network simu-lationsimulation modeloperation plan
万方数据
维普
