Market assessment - Development of an engineering software for perforate, wash and cement processes in oil and gas wells (PWCPro)

封井弃井（P&A）作业是油气井生命周期的最后阶段。弃井作业的主要目标是密封井并永久保持井的完整性，以防止环境灾害，如含水层污染、浅层地层压力破裂和流体泄漏到不同层。目前，业界对P&A作业的操作、技术和监管方面的兴趣很高，并可能在未来几十年继续快速增长。一般来说，封堵弃井作业的关键步骤如下：(i)进入井的环空段，（ii）清理有缺陷的区域，（iii）在目标区域放置水泥塞障碍物。一种基于喷射系统的新型射孔、洗井和水泥（PWC）技术已经被开发出来，可以显著减少封堵和弃井作业的时间和成本。然而，由于存在许多参数的组合，例如几何参数、流体特性、操作条件等，因此封堵弃井作业中的喷射系统非常复杂。因此，为了找到优化的参数（关于每个过程、每个井况和每个地区的特定政府法规），集成包的存在似乎至关重要，以提高效率并减少操作时间/成本。在此背景下，我们的工作旨在为设计和开发基于流体力学方面的工程软件包提供市场评估。我们的创新软件提供了优化的参数，减少了P&A作业的时间和成本，提高了成功率。

The plug and abandonment (P&A) operation is the final stage in the life cycle of oil and gas wells. The main goals of the P&A operation are to seal the well and permanently maintain the well integrity, to prevent environmental disasters, such as water-bearing zones contamination, shallow formations pressure breakdown, and fluids leakages to different layers. Industrial interests in operational, technological and regulatory aspects of P&A operation are currently high and likely to continue to grow rapidly in the coming decades. In general, the vital steps of the P&A operation are as follows: (i) accessing the annulus section of the well, (ii) cleaning the defected area, and (iii) placing the cement plug barriers into the target area. A novel perforate, wash and cement (PWC) technology based on jetting systems has been developed, which can significantly reduce the P&A operation time/costs. However, the jetting system in the P&A operation is complex due to presence of a combination of numerous parameters, such as geometrical parameters, fluids properties, operational conditions, etc. Therefore, to find the optimized parameters (regarding each process, each well condition, and specific governmental regulations in each region), the presence of an integrated package seems crucial, to enhance the efficiency and reduce the operation time/costs. In this context, our work aims to provide a market assessment for designing and developing an engineering software package, based on the fluid mechanics aspects. Our innovative software provides the optimized parameters, leading to reducing the time and costs of P&A operations and enhancing their success rate.