Visualization Simulation Of Submarine Pipeline Leakage In Underwater Gas Field

As the oil and gas resources increasingly depleted,many countries have turned their attention to the ocean,oil and gas exploitation of deepwater has received increasing attention.Subsea Production System is an important assembly part of deep sea oil and gas exploitation,which successfully applied to the world’s major sea areas.3D modeling and visualization of subsea production system are carried out to solve the problem that the researcher and operator are convenient to observe and research for harsh environment.Submarine pipeline is one of critical equipment,which plays a key role in Oil and Gas transmission.With more and more widespread use of submarine pipelines,the accident caused by leak of submarine pipeline is also on the rise,which pose great threat to safe operation and offshore ecological environment protection.Visual simulation system has the advantages of reusable,economic security and so on.Therefore,visual simulation using computational simulation technology was carried out to visualize the leakage location and leakage phenomenon of Submarine pipeline.Visual simulation could really and vividly reflect the leaking process and provide references for decision-making of emergency rescue measuresBased on learning and understanding of visual simulation technology,from the user groups,features,rendering effects,price and other aspects,detailed analysis and comparison of commonly used visual development platform.According to the research purpose,the 3ds Max is selected as the modeling tool,and the Unity3 d is used as the visual development platform of the system.Using 3ds Max to establish the main production equipment in the subsea production system,such as christmas tree,manifolds,ROV,etc.,and importing them into the Unity3 d to establish the virtual scene and visual roaming of underwater production system.The layout of the virtual scene is the manifold + cluster satellite wells,including 11 production wells and a reserve well in the East and west two regions.Through analysis and comparison of leak detection method,the negative pressure wave leakage point positioning is selected.Using visualization method demonstrates the generation and propagation process of negative pressure wave.After analyzing the negative pressure wave theory,the formula for calculating the negative pressure wave velocity is improved.Considering the effect of temperature and pressure on negative pressure wave using iterative methods to improve the accuracy of the system.The mathematical model of leakage is established by using the improved method.Visual simulation of submarine pipeline leakage is realized by Unity3 d visual development platform.Finally,an example is given to verify the feasibility of the system.