Simplifying Processes in the Offshore Decommissioning sector: Reducing P&A costs by 30% and emissions by 50%

该项目的目的是尽量减少纳税人和平台运营商在英国水域即将到来的退役费用。我们主要关注的是由综合P&A总成本驱动的最高成本份额。通过实施创新的技术解决方案，而不是使用估值过高的钻井或修井设备，也有很大的机会减少二氧化碳的总排放量。我们已经确定了封堵弃井的技术解决方案，最终将重点放在运营商的需求上，根据井和平台的要求部署正确的工具。这种模块化的多作业系统能够组装在一个基本设置中，以满足低井类别的要求，如果存在更高的井类别，它可以选择升级。与现有的修井解决方案相比，该解决方案最大的不同之处在于它具有更大的作业范围，可以服务于所有弃井作业阶段，并且可以连续地从井中回收旧完井，而无需中断连接。作为一个修井装置，该系统轻巧紧凑，同时具有钻机的操作灵活性，优化到最重要的P&A基准，如提升速度或井下工具的处理。可行性研究侧重于创新的颠覆性技术解决方案的商业、技术和运营可行性。主要范围是开发一个基本的三维设计软件，以支持其技术可行性。之后，3D图将转换为动画，以证明其操作能力，特别是处理P&A作业中从电缆作业到完井恢复的所有必要事件。这种可操作性转化为封堵弃井作业的最关键基准，并通过封堵弃井执行模拟工具与现有系统进行密集的商业分析。该工具在考虑封堵弃井的各个方面的情况下，证明了各种设置下的操作能力、相对成本和排放节约。其范围是为构建将在试点项目中部署的演示器达到技术准备水平。

The aim of the project is to minimise the upcoming decommissioning bill for the tax payer and platform operators in Uk waters. Our main focus is on the highest cost share driven by the total integrated P&A costs. There is also a great opportunity in reducing the overall CO2 emissions by implementing an innovative technical solution instead of deploying overrated distressed drilling or workover units.We have identified a technical solution for P&A which finally focuses on the operator demand to deploy the right tool depending on the well and platform requirements. This modular multi-operational system is capable to be assembled in a basic setup to meet low well category requirements while it has the option to be upgraded if higher well categories are present. One of the biggest differentiator is its large operational envelope to existing workover solutions as it can serve all P&A campaign phases with the additional advantage of continuously recovering the old completion from the well without any breaks for connections. The system is light & compact as a workover unit while it has the operational flexibility of a drilling rig optimised to the most important P&A benchmarks such as the hoisting speed or handling of downhole tools.The feasibility study focuses on the commercial, technical and operational viability of the innovative disruptive technical solution. Main scope is the development of a basic design in a 3D software to support its technical feasibility. Afterwards, the 3D illustration will be converted to an animation for proving its operational capabilities, especially dealing with all necessary events in a P&A campaign from wireline jobs to completion recovery. This operability is transformed to the most critical benchmarks for a P&A job and compared to existing systems in an intensive commercial analysis by a P&A execution simulation tool. This tool proves operational capabilities, the comparative costs and emission savings in various setups, taking into account all aspects of P&A . The scope is to achieve a technical readiness level for the build of a demonstrator that will be deployed in a pilot project.