DNV GL and ExproSoft are joining forces to offer a risk-based approach to testing barrier valves in subsea completed wells applicable worldwide. The objective is to reduce both downtime and risk related to shut-in and restart of wells in addition to substantial cost savings.
Currently, the NCS regime refers to NORSOK D-010 for well barrier testing and testing frequencies and leak criteria for well barrier valves are determined by API 14B/ISO 10417. DNV GL and Exprosoft will undertake a project to develop the risk-based approach that will identify failure modes and causes, failure rates, analyse the consequences, establish a risk picture and translate the results into a recommended test frequency. Further, a method to develop risk-based leak acceptance criteria may also be an outcome of this work. The results can be applied globally and will be available in Q1 2016.
DNV GL and ExproSoft‘s strategic cooperation and partnership agreement brings together ExproSoft’ s WellMaster, the world’s largest repository of reliability data for wells based on more than 40,000 well years of historical data, with DNV GL’s risk management expertise.