Performance Verification Testing (PVT) is performed on prototypes on production models to verify the performance requirements specified for temperature, pressure, load, mechanical cycles, and standard test fluids are met in the design of the product.
I will outline the PVT requirements as given in API 6A (ISO 10423), API 16A (13533), API RP-17G (ISO 13628-7) and draw attention to what is required for a subsea well intervention coiled tubing/wireline BOP rams. I will go through some of the qualifications that have been performed for some products, difficulties and challenges with certain sections and conclude with a summary.
We all want to be provide a safe environment during a well intervention project or campaign. The industry standards set guidelines for us to follow so that we have a reassurance that the equipment we put on our wellheads will keep everyone safe. We are challenged as the wells get higher pressure, higher temperature and deeper waters. The risk increases and any small accident could be catastrophic. We are therefore faced with challenges during well intervention operations, we must have confidence the equipment we are putting on our wells is sufficient, adequate and will work when we need it to work.
Performance Verification Testing is one of the major steps we take to ensure the equipment is fit for purpose. We perform a range of tests on the equipment to ensure that it will work when we need it to. Some equipment is used on a daily basis, other tools are used only during certain situations and then you have the tools that are used as the last step to contain the well.
The steps I am going to go through are the steps taken to qualify equipment for well intervention. I will go through the requirements for API 6A, 16A, and 17G and some challenges we have faced and conclude with some suggestions.