Numerical Simulation Investigation of Lateral Bearing Characteristics of Deepwater Expandable Conductors

Deep water poses challenges for conventional surface conductors due to soft seabed soil. The current installation methods are time-consuming and risky, leading to sinking and instability. A new high-bearing capacity surface conductor is essential. This study investigates lateral bearing characteristics of deepwater expandable surface conductors. A mechanical model was established based on fundamental mechanics principles. Three types of expandable conductors were designed, varying expansion material distribution. The study compares lateral bearing characteristics, analyzes changes in bearing capacity based on soil parameters and expansion material section, and demonstrates enhanced bearing capacity of the new conductors compared to traditional ones. This research supports expandable surface conductor design and numerical simulations in surface well construction.