The industry’s focus on cutting greenhouse-gas emissions and adopting more sustainable drilling waste management solutions is not only tackling climate change targets but also improving safety, reducing cost and driving efficiencies. With water-based and non-aqueous drilling fluids (NAF) and drill cuttings accounting for the largest waste streams generated from global offshore drilling operations, E&P operators continue to look for ways to turn this waste stream into value.
The main options for oil-based drill cuttings treatment are offshore thermal processing or cuttings reinjection, both at source, and skip and ship or bulk transfer to shore.
With net-zero ambitions at the fore, TWMA recently engaged with DNV, the independent energy expert and assurance provider, to undertake the first comparative emissions study(1) between the company’s offshore thermal drill cuttings treatment solution and conventional alternatives including skip and ship to shore, bulk transfer and cuttings reinjection (CRI), used on the Norwegian Continental Shelf (NCS). It is the first paper to show a direct emissions comparison between offshore processing and all other alternative methods.