ConocoPhillips Scandinavia (COPSAS) uses the Jet-Type Perforate-Wash-Cement (P/W/C) technique as the primary method for well abandonment in the Greater Ekofisk Area (GEA) of the North Sea. The procedure used for the abandonment process was first published in 2020 (SPE-202397-MS), as was the complementary Computational Fluid Dynamics (CFD) results used to optimize the process (SPE-202441-MS). This paper will cover the most recent learnings and the latest CFD-based design modifications made to the bottom hole assembly (BHA) with the objective to achieve the best possible abandonment plug.

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