Research On Subsea Facilities Hydraulic Control System Design And Simulation Offshore Oil Field

The sub-sea production facilities hydraulic control system was mainly used to control the valves on sub-sea X-trees, opening and closing the valves to achieve crude oil gathering and chemical substances injection. At present, we have not had the technoligy to support the research and development of hydraulic control system of sub-sea production facilities independently. The hydraulic control system was analyzed and researched in order to lay a certain foundation for developing our own sub-sea production facilities hydraulic control system. This thesis has completed the study of hydraulic control system static design method, built mathematical modeling of the long hose and focused on theoretical derivation and analysis of fluid resistance, fluid capacitance and liquid inductance characteristics of the long hose. Taking the East China Sea oil and gas fields as an example, completed a variety of dynamic simulations of hydraulic control system under common conditions by AMESim and come to the conclusions that the static design method were reasonable.The thesis included five chapters.Chapter I introduced the research backgrounds of hydraulic control system, described the research purpose, significance and main research contents of sub-sea production facilities hydraulic control system.Chapter II described working principle of sub-sea production facilities hydraulic control system, focused on mutual interference problems of several X-trees' actuators while driven by one long umbilical and the study of long hose impacts to X-trees' actuators response the oil tree. The study laid a theoretical foundation for developing our own sub-sea production facilities hydraulic control system.Chapter III took the East China Sea oil and gas fields as an example, studied the compensation effect of a long hose of the hydraulic control system while the rationality of the hydraulic control system design method.Chapter IV also took the East China Sea oil and gas fields as an example, built hydraulic control system and its main components' simulation models, completed dynamic simulation of oil field in common conditions using static design results and analyzed simulation results.In the final chapter V, there were some conclusions of the research achievements and the further study direction was brought forward.