大型钢质圆筒就位作业安全风险分析及对策研究

Safety Risk Analysis and Countermeasure Research of Large Steel Cylinder Positioning Operation

钢质圆筒作为水下干式采油设施安装、钻完井阶段的重要装置,起到了隔离外部海水的作用,创造了干式的安装与钻完井环境,方便了水下施工作业。基于就位作业的危险性特征,先利用结构熵权法对圆筒就位作业的危险因素进行分析,并计算各因素指标的权重,得到权重总排序,再利用预先危险性分析法对权重值较高的5个危险因素,即大气压、应力释放、立式姿态中心高度、吊装钢丝绳状态、圆筒立式固定重心位置分别进行分析,进而明确提出降低水下干式作业安全风险的预防及缓解措施,以确保企业安全生产、降低人员伤亡和财产损失。

As an important device in the installation,drilling and completion stages of underwater dry oil production equipment,the steel cylinder plays the role of isolating the external seawater,creating a dry installation and drilling and completion environment,and facilitating underwater construction operations.Based on the risk characteristics of cylinder positioning operations,the structural entropy weight method is used to analyze the dangerous and harmful factors of the cylinder positioning operations,and the weight of each factor index is calculated to obtain a total ranking of the weights.The pre-hazard analysis method is used to analyze the five dangerous and harmful factors with high weight values,namely atmospheric pressure,stress release,vertical attitude center height,hoisting wire rope state,and steel cylinder vertical fixed center-of-gravity position.The prevention and mitigation measures to reduce the safety risk of underwater dry operations are put forward to ensure the safe production of enterprises,reduce casualties and property losses.