DRAG REDUCING AGENTS FOR OIL - AND SYNTHETIC-BASED FLUIDS

Minimizing circulating pressure loss and/or reducing friction in drilling fluid operations to minimize equivalent circulating density (ECD) and maximize flow for borehole cleaning, tool optimization and efficient drilling may be achieved by the addition of friction improvers or drag reducers while c...

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Main Authors BLAND, RONALD, G, HALLIDAY, WILLIAM, S, CLAPPER, DENNIS, K
Format Patent
LanguageEnglish
French
Published 19.06.2014
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Abstract Minimizing circulating pressure loss and/or reducing friction in drilling fluid operations to minimize equivalent circulating density (ECD) and maximize flow for borehole cleaning, tool optimization and efficient drilling may be achieved by the addition of friction improvers or drag reducers while circulating drilling fluids. Suitable drag reducers may include, but not necessarily be limited to, poly(alpha-olefins); polyisobutylene; condensation polymers of dicarboxylic acids or anhydrides, or polyols and monocarboxylic acids, addition polymers of unsaturated esters; copolymers of alpha-olefins with unsaturated esters; poly¬ styrene acylated with long chain fatty acids; polyalkylene oxides; copolymers of alkyl acrylates with N-containing olefins; and combinations thereof. Selon l'invention, l'ajout de substances atténuant les frottements ou de réducteurs de traînée à des fluides de forage circulants permet de réduire la perte de pression circulante et/ou les frottements dans les opérations de fluide de forage, afin de réduire la densité de circulation équivalente (ECD) et d'optimiser le flux pour le nettoyage des trous de forage, d'optimiser l'outil et l'efficacité de forage. Parmi les réducteurs de traînée appropriés figurent, notamment mais non exclusivement, les poly(alpha-oléfines) ; le polyisobutylène ; les polymères de condensation d'acides dicarboxyliques ou d'anhydrides, ou de polyols et d'acides monocarboxyliques, les polymères d'addition d'esters insaturés ; les copolymères d'alpha-oléfines et d'esters insaturés ; le polystyrène acylé avec acides gras à chaîne longue ; les oxydes de polyalkylène ; les copolymères d'acrylates d'alkyle et d'oléfines azotées ; et leurs associations.
AbstractList Minimizing circulating pressure loss and/or reducing friction in drilling fluid operations to minimize equivalent circulating density (ECD) and maximize flow for borehole cleaning, tool optimization and efficient drilling may be achieved by the addition of friction improvers or drag reducers while circulating drilling fluids. Suitable drag reducers may include, but not necessarily be limited to, poly(alpha-olefins); polyisobutylene; condensation polymers of dicarboxylic acids or anhydrides, or polyols and monocarboxylic acids, addition polymers of unsaturated esters; copolymers of alpha-olefins with unsaturated esters; poly¬ styrene acylated with long chain fatty acids; polyalkylene oxides; copolymers of alkyl acrylates with N-containing olefins; and combinations thereof. Selon l'invention, l'ajout de substances atténuant les frottements ou de réducteurs de traînée à des fluides de forage circulants permet de réduire la perte de pression circulante et/ou les frottements dans les opérations de fluide de forage, afin de réduire la densité de circulation équivalente (ECD) et d'optimiser le flux pour le nettoyage des trous de forage, d'optimiser l'outil et l'efficacité de forage. Parmi les réducteurs de traînée appropriés figurent, notamment mais non exclusivement, les poly(alpha-oléfines) ; le polyisobutylène ; les polymères de condensation d'acides dicarboxyliques ou d'anhydrides, ou de polyols et d'acides monocarboxyliques, les polymères d'addition d'esters insaturés ; les copolymères d'alpha-oléfines et d'esters insaturés ; le polystyrène acylé avec acides gras à chaîne longue ; les oxydes de polyalkylène ; les copolymères d'acrylates d'alkyle et d'oléfines azotées ; et leurs associations.
Author CLAPPER, DENNIS, K
BLAND, RONALD, G
HALLIDAY, WILLIAM, S
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Snippet Minimizing circulating pressure loss and/or reducing friction in drilling fluid operations to minimize equivalent circulating density (ECD) and maximize flow...
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SubjectTerms ADHESIVES
CHEMISTRY
DYES
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MINING
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PAINTS
POLISHES
Title DRAG REDUCING AGENTS FOR OIL - AND SYNTHETIC-BASED FLUIDS
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