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Debris Management and Cleanout - …
Debris Management and Cleanout Debris Categorization Solids Gunk (sludges, emulsions, viscous liquids , PIPE DOPE!) Junk introduced into the hole Source: Wellcert 1 Photograph (from Colombia) of cutter run. 2 Solids generated during the well construction process typified by: barite due to mud settlement cuttings (cement and formation) due to poor hole cleaning swarf from milling operations mill scale rust and other solids from poorly prepared tubulars 3 Gunk from fluids used in the well pipe dope tremendously damaging! viscous muds (milling fluids and synthetic muds at low temperature) gelled oil based mud after mixing with water 4 Junk introduced to the well: seals/elastomeric materials from BOP and seal stacks cement plugs and float equipment after drill out perforation Debris materials accidentally introduced : wood from pallets dropped objects hoses tools 5 Junk introduced to the well: Paint During lab test in Germany, (University of Hannover) we found out that 1 ft2 of paint could plug 1 ft2 of
Debris Management and Cleanout •Debris Categorization –Solids –Gunk (sludges, emulsions, viscous “liquids”, PIPE DOPE!) –Junk introduced into the hole
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