Production

Thanks to stepout-well and tieback technologies, Shell’s Mars platform is the first single offshore platform in the US Gulf to produce 1 billion bbl of crude over its lifetime with production expected to continue into the 2040s.
This article from the SPE Integrated Reservoir Management Technical Section (IRMTS) addresses decision timing across the reservoir cycle.
BP said it expects to keep the Azeri-Chirag-Gunashli (ACG) project in production into the 2040s by tapping into separate nonassociated gas reservoirs.

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