Lessons Learned from 150 Jet-Type Perforate, Wash and Cement Well Abandonment Operations
Lars Hovda, Dan Mueller, Amal C. Phadke, Harald Nevoey, Praveen Gonuguntla
Abstract
Abstract 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.
Topics & Concepts
Abandonment (legal)Computational fluid dynamicsPetroleum engineeringJet (fluid)Process (computing)GeologyCover (algebra)EngineeringMarine engineeringComputer scienceEnvironmental scienceMechanical engineeringAerospace engineeringOperating systemPolitical scienceLawOffshore Engineering and TechnologiesMarine and Offshore Engineering StudiesHydraulic Fracturing and Reservoir Analysis