Offshore Engineering Analysis

Vibration /stress analysis and design of offshore compressor packages, piping systems and structures (platform modules and FPSOs) is an important business activity of CCPGE. The purpose of this analysis is to improve the reliability of offshore compressor package, piping system and structure design.

The analysis includes static analysis and dynamic analysis. The static analysis calculates the static stresses and deformations of offshore compressor packages, piping systems and structures in lifting and transportation operation. The dynamic analysis calculates the vibration levels, displacements and dynamic stresses of the compressor packages, piping systems and structures in operating conditions.

The analysis is performed using Ansys and STAAD Pro software. The analysis loads include weights of compressor packages, piping and structures, living loads, wind loads, snow loads, wave loads and other dynamic loads such as the unbalanced forces and moments of drivers and compressors, pressure pulsation induced shaking forces, and compressor cylinder gas pressures, etc.

FEA Model of Offshore Compressor Packages and Supporting Platform Structure

Vibration Mode of Offshore Compressor Packages and Supporting Platform Structure (f = 12.4 Hz)

FEA Model of BZ34-9 Offshore Platform Compressor Module Structure

Vibration Model of BZ34-9 Offshore Platform Compressor Module Structure (f = 3.2 Hz)