The new regulations in place in certain regions of the world have introduced limitations to what operators can do in their planning phase. If calculations show that the kill requirement exceeds the capacity of one relief well, the operator would usually have to redesign the well.This could introduce added costs to the project, and also, in some cases, add or increase the complexity of the well design.
The RWIS has a dual benefit. It ultimately has the safety benefit of being able to achieve single relief well contingency, without having to redesign your well, but it can also unlock the potential for planning bigger bore wells and therefore enable more efficient field development.
It can unlock economic benefits for you by allowing you to maximize flow rates through increasing the size of the wellbore, while still maintaining a single relief well. As production targets can now be met with fewer wells by having access to the RWIS, the CAPEX cost savings achieved can be incredible.
The RWIS and our method for killing a blowing well was recently patented.
When compared to other well control hardware, the ability to hook up large diameter flexibles in a subsea environment via an ROV (in a system that is configured to be as erosion resistant as possible, is lightweight, and has the necessary safety barriers in place), without negatively impacting the existing BOP well barriers or operation, is what makes the RWIS so unique.In addition to this, the RWIS has passed multiple technical integrity screenings from various oil and gas operators.
Before an operator is granted access rights to the RWIS, a feasibility study must be conducted to assure the well can in fact be killed via a single relief well using the RWIS. At this stage, Add Energy’s team of reservoir and flow experts, in collaboration with their blowout contingency team conduct this study on behalf of the client in order to identify if the RWIS is a suitable contingency measure.If the RWIS is selected as a viable means of well control, then the operator enters into a contract for RWIS access via our colleagues at Trendsetter Engineering. They, in turn, issue a RWIS access certificate as proof of RWIS access to show regulators.
In general, blowout and kill simulations contribute to risk awareness. Before you’re allowed to drill, you need to apply for consent and provide the regulator with documentation for the upcoming operation. This application should include a contingency plan for regaining control of the well if the worst was to happen.
Many countries now have regulations that require companies to demonstrate single relief well contingency, and some of the major operators have similar internal guidelines and policies that dictate this.Relatively speaking, it can be straightforward to control a blowout. But often, it can be very challenging. We look at the reservoir properties, reservoir fluid, drilling program, well completion, wellbore survey, etc. and develop possible scenarios of why things might not go according to plan. And once established, we calculate the potential blowout rate, simulate it and calculate what is required in terms of gaining control of that blowout scenario. We then pass our findings to the client, along with our recommendations for contingency planning and whether a single relief well is viable or not.
No, it has the safety benefit of being able to achieve single relief well contingency, without having to redesign your well. All interfaces are industry standard and the system comes with all the necessary hardware to connect a flexible and BOP to the system.