The development of heavy oil with high efficiency is a worldwide difficulty for offshore oil field. The technology of rod pumping provides a possible effective way for offshore heavy oil thermal recovery, but the safety of working platform is the prerequisite for the implementation of this new technology. In this paper, the mechanical model of LD27-2 WHPB platform is established, and the safety performance of the platform under hydraulic pumping unit (HPU) load is evaluated. The distribution of the combined HPU load accords with the classical probability model. When the HPUs are all synchronous, the combined load reaches its maximum. The finite element-based platform safety analysis under the extreme condition is carried out. Under the combined action of wave current, wind load and the extreme HPU load, the maximum stress of the jacket is 83.2 MPa, and the safety coefficient is 4.33, indicating the overall strength of LD27-2 WHPB platform meets the safety requirement.

高效重油的开发是海上油田的世界性难题。棒抽技术为海上重油热采提供了一种可能的有效途径，但工作平台的安全性是实施这项新技术的前提。本文建立了LD27-2 WHPB平台的力学模型，并对平台在液压泵站（HPU）载荷下的安全性能进行了评估。组合HPU负载的分布符合经典概率模型。当所有HPU都是同步的时，组合负载达到最大。进行了极限条件下基于有限元的平台安全分析。在波浪电流，风荷载和极限HPU荷载共同作用下，护套的最大应力为83.2 MPa，