Decommissioning
This paper identifies opportunities and risks associated with repurposing an offshore oil and gas platform for green hydrogen production. Various technical scenarios were investigated for the case study platform, and their profitability was determined using economic calculations. In addition, all the submodels were compared with standard decommissioning costs for reco…
This paper presents an approach for safe, efficient, and cost-effective legacy well reabandonment.
This paper uses the structural-integrity-management framework to evaluate the current structural integrity of chosen platforms, highlighting their potential and limitations for carbon capture, use, and storage purposes based on in-service assessments.
-
The joint venture will include work on P&A, towage of floating units, and removal of subsea infrastructure, with the ultimate goal of providing the full end-to-end process for decommissioning. -
Many operators are taking a full-life-cycle approach to preparing for decommissioning—a shift borne of necessity amid cost and regulatory constraints.
-
With no money to be made, P&A is one area where operators can put aside their hyper-competitiveness to work together. Members of the recently formed PACE network discussed the virtues of collaboration at the Decommissioning and Abandonment Summit 2018.
-
With $102 billion of decommissioning-related expenditure forecast to 2040 in Western Europe, opportunities are ripe for the supply chain to compete with innovative and cost-effective solutions for the E&P operators.
-
The shutting in of unprofitable offshore wells and the requirements for their plugging and abandonment is attracting more attention to what is being done with the associated subsea equipment. The benefits of leaving subsea systems in place vs. recovering them are being considered.
-
Archer’s Stronghold Barricade well decommissioning system leaves the casing in place, while perforating, washing, and cementing the annulus to create a cement barrier in a single trip.
-
The supply chain is now actively working to develop low-cost solutions and is gaining valuable experience through recent projects (as documented in many recent SPE papers). Owners need to engage the supply chain early with the relevant asset data for planning and execution of decommissioning.
-
The optimization model presented in the complete paper is the first multioperator offshore network-optimization model that considers decommissioning in the Netherlands.
-
A new downhole-tool-based abandonment system was developed and deployed successfully on four wells for a major operator on a field in the North Sea.
-
The complete paper describes how various P&A designs can be compared by use of a risk methodology that takes account of degradation mechanisms, potential flow rates, and the effect on the environment.
