Dehydration of drilling fluids

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

IPC codes

C10G 33/04 (2006.01) B01D 17/00 (2006.01)

Type

Patent

Patent number

CA 2175859

Description

Calcium oxide (CaO - Hot Lime - Processed Lime) is added to a Hydrocarbon Based Fluid (Crude Oil - Refined Oil - Diesel Fuel - Mineral Oil - etc.) used as a drilling fluid to drill bore holes (Oil and Gas Wells - Mine Shafts - etc.) to react with any water (H2 0) present to generate a water free fluid. Several advantages result from accomplishing the water removal process including higher drilling rates, lower fluid preparation and maintenance costs, lower drilling fluid pumping costs, improved solids removal from the drilling fluid at the surface, improved bore hole conditions and improved environmental cleanup of the drill solids waste.

On ajoute de l'oxyde de calcium (CaO, chaux vive, chaux traitée) à un fluide à base d'hydrocarbure (huile brute, huile raffinée, carburant diesel, huile minérale, etc.) servant à percer des puits de forage (d'exploitation pétrolière, gazière, minière, etc.) et réagissant avec l'eau (H2O), afin de produire un fluide anhydre. L'élimination de l'eau a plusieurs avantages : meilleurs taux de forage, réduction des coûts de préparation, de maintenance et de pompage du fluide de forage, meilleure élimination des solides du fluide de forage à la surface, amélioration de l'état des puits de forage et élimination des déchets solides plus soucieuse de l'environnement.

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