Study On Three-dimensional Design And Pipeline Vibration Simulation Of Xinzhong 605 Oil Transfer

The oil transfer station has always been an important part of the construction of oil and gas field ground projects.In the development and construction of oil and gas fields,in addition to building oil and water wells,the ground also needs to build pipelines,power lines,communication lines,stations,etc.These facilities must occupy a certain space in addition to their own In addition,there are also safety clearance requirements between them.Therefore,it is more and more difficult for the site selection and layout of the oilfield transfer station.In order to maintain the stable production of crude oil and make up for the decline in production,it is also necessary to build a considerable scale of production capacity each year.Therefore,in addition to planning in advance,and several years ahead of large and medium-sized station sites,the three-dimensional distribution station is an important measure.Based on t he development plan for Daqing Oilfield,this paper presents a three-dimensional design of the Xinzhong 605 oi l transfer station.First,it describes the important role of the oil transfer station in the production of oil and gas fields,and according to the process flow of the offshore oil and gas production platform,The transmission process is rationally designed to meet the oilfield production requirements;followed by the three-dimensional layout design of the Xinzhong 605 oi l transfer station according to the terrain and floor layout,two layout schemes are proposed,the most reasonable three-dimensional layout is optimized,and the three-dimensional During the process,a detailed analysis was made on the technical installations such as pipeline installation and housing structure,etc.The three-dimensional distribution station and the conventional station station were compared in terms of area,investment and construction,which reduced the area and investment;The rational design of the stand design of the other field of the oil field was made,and the possibility of stand-building construction such as the filling station,water injection station,and sewage station was analyzed.In the process of Xinzhong 605 oil transfer stand-up,due to the three-dimensional arrangement of oil and gas processing facilities,the pipeline is no longer a flat layout,there will be a large span of three-dimensional pipeline.The pipelines of the oil transfer station are mostly mixed transmission pipelines.Due to the instability of the multiphase flow,the pipelines are susceptible to pipeline vibration.In the trial operation of the New China 605 three-dimensional oil transfer station,the problem of vibration of the mixed transmission pipeline occurred,which caused a certain impact on the safety production.This dissertation mainly studies the vibration characteristics of three-dimensional mixing pipelines from three aspects.Firstly,the causes of pipeline vibration caused by mixed transmission pipelines are introduced.The characteristics of multiphase flow and the theory of fluid-solid coupling are introduced.At the same time,the multiphase flow patterns in horizontal pipelines and vertical pipelines are analyzed;Based on the basic idea of the element,the vibration equations of the simply-supported straight tube at both ends under the action of gas-liquid two-phase flow are deduced based on t he finite element theory.The expression for calculating the natural frequency of the tube is obtained by solving the solution.The analytical solution and the simulated value are compared to verify the model.The accuracy is based on the natural frequency expression.The sensitivity of the natural frequency is selected from the pipe geometry,material parameters and flow parameters.Finally,the simulation method based on f luid-solid coupling is introduced in conjunction with the commonly used simulation tool ANSYS software.The most reasonable solution is preferred.The simple straight tube and the combined right-angle tube are simulated by this method,and the gas-liquid two-phase distribution in the pipeline is simulated to determine the flow pattern of the pipeline.The modal analysis of the pipeline was carried out to obtain the dynamic response of the pipeline.The fluid-solid coupling problems when the frequency of the pipe slug flow and the natural frequency of the pipeline were similar were analyzed and discussed,and improvement measures were proposed for the problem.