The application of surface blowout preventer (SBOP) drilling system in deepwater environments has been demonstrated that it can save operation cost and time. The high pressure small diameter casing plays the role of the conventional riser and bears the complex loading caused by the wave and current force and drilling platform motion. The coupled quasi-static and uncoupled dynamic analysis models of deepwater SBOP drilling system were established. The analysis results indicate that the uncoupled method without consider the lateral offset on the end of the high pressure riser nearly no affection to the riser analysis. However, the uncoupled method has a certain impact on the mechanical analysis of the subsea wellhead and the casing string under mudline. The lateral offset of the high pressure riser changes greatly in the different times, the bending moment of the upper and lower stress joint of riser is bigger. The platform long-term drift has a greater impact on the dynamic response analysis of the high pressure riser of SBOP system for deepwater drilling.

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wave and current force lateral offset uncoupled method bending moment complex loading coupled quasistatic and uncoupled dynamic analysis models of deepwater sbop drilling system high pressure small diameter casing surface blowout preventer sbop drilling system platform longterm drift pressure riser of sbop system subsea wellhead dynamic response analysis casing string

Kanhua Su,.Dynamic Response of High-Pressure Riser of Deepwater SBOP System. 10 (4),.

Kanhua Su,"Dynamic Response of High-Pressure Riser of Deepwater SBOP System" 10

Kanhua Su,"Dynamic Response of High-Pressure Riser of Deepwater SBOP System"