BOP Seal Erosion Simulation for Closing Parameters

The patent applies preliminary action by determining the erosion rate of the BOP seal before actual wellsite operation through laboratory testing and CFD simulation. This allows the closing time to be pre-calculated and pre-set, ensuring the seal is closed before erosion significantly degrades its performance. The erosion rate determination and closing time calculation are performed in advance during the planning phase, not during actual operation.

The patent applies dynamics by making the closing time variable and adaptive based on determined erosion rates. Rather than using a fixed closing time, the system calculates optimal closing times based on specific erosion rates measured or simulated for different seal materials and operating conditions. This allows the closing parameters to be dynamically adjusted to match actual erosion characteristics.

The patent applies parameter changes by modifying the closing time parameter based on determined erosion rates. The system calculates specific closing time values that account for erosion effects while remaining within API allowable limits. By changing the closing time parameter from a standard fixed value to an erosion-adjusted variable, the system optimizes both sealing effectiveness and time efficiency.

The patent applies skipping by rushing through the closing operation at optimized rates determined by erosion analysis. Rather than slow, gradual closing that would take excessive time, or rapid closing that might be insufficient, the system calculates optimal closing speeds that achieve effective sealing within the shortest safe time frame, skipping unnecessary delays while avoiding harmful rushing.

The patent applies copying by creating a virtual model (CFD simulation) that replicates the physical erosion process. Instead of complex physical testing for every scenario, the system uses computational copies of the flow and erosion processes to determine closing times. This maintains operational simplicity while improving reliability by allowing extensive virtual experimentation without physical complexity.

The patent applies mechanics substitution by replacing physical trial-and-error testing with computational fluid dynamics simulation. The complex mechanical process of testing seals under various conditions is substituted with numerical models that calculate erosion rates and optimal closing times. This maintains ease of operation while significantly improving sealing performance through more accurate, physics-based predictions.