Abstract

Fluid-Structure Interaction (FSI) routinely occurs during the operation of subterranean equipment in the oil and gas industry. Analysis of these downhole tools needs to account for this interaction. The interaction between a fluid and a structure can be strong or weak. For many weak interactions, the fluid effects can be represented by equivalent loads, such as hydrostatic pressure, and a regular finite element analysis (FEA) is sufficient. For other cases of weak interactions, the effects of the fluids on the structure can be determined a priori and then used as an input for structure analysis, or vice versa. For strongly coupled FSI, a fully coupled FSI analysis is required, which is substantially much more complicated than the simplifications available with a weakly coupled FSI. Understanding the opportunities for using a weakly coupled FSI can result in great time savings. There are some scenarios where the fluid and its effects can be modeled fully within FEA models in Abaqus. In this presentation, our work (Ref 1-3 as examples) on FSI analysis without fluids in the FEA models is reviewed. It is shown to be efficient and accurate for selected types of applications.

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Presenter Bio

Allan Zhong is the Halliburton Distinguished Scientist, Halliburton, a strategic and visionary technology leader with broad engineering/research experience and a proven track record to drive innovation and new product development, deliver results with commercial impact. He has 7 issued/15 pending US patents. He has also published more than 60 technical papers. Prior to Halliburton, Allan worked at Goodyear Tire and Rubber Company, where he developed an industry-leading fracture mechanics-based truck tire durability model. He is a Fellow of the American Society of Mechanical Engineers (ASME) and a member of the Society of Petroleum Engineers (SPE). He earned a Ph.D. in applied mechanics from the California Institute of Technology.

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