Reading a wellbore Schematic

Common Mistakes and Errors• Schematic not current:– Last redesign, workover, failure not listed.– Corrosion, fill, collapses, or fish not listed.– Does pipe/wellhead need to be derated?– Deviation shortens tool length that will run through thebend.• So, how do you know what’s there?– Drift / tag, bailer, dummy tool runs, impression blocks,camera…– Talk to the field and last engineer who had the well.www.GEKEngineering.com 22