Oil well drilling fluids - contg. ilmenite as weighting agent

Oil well drilling fluids - contg. ilmenite as weighting agent

Oil well drilling fluids based on oil, water or emulsions, contains added thickening agent, and ilmenite of particle size such that 85 wt % passes a 0.044 mm (325 mesh) sieve as weighting agent, in amount sufficient to give the required density. The ilmenite is of sufficient purity to have a density...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: E. HUEBOTTER,EARL, JOHN NEVINS,MICHAEL, M. HUEBOTTER,ISABEL
Format: Patent
Sprache:eng ; ger
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:Oil well drilling fluids based on oil, water or emulsions, contains added thickening agent, and ilmenite of particle size such that 85 wt % passes a 0.044 mm (325 mesh) sieve as weighting agent, in amount sufficient to give the required density. The ilmenite is of sufficient purity to have a density of 4.3 min. Fluid is used as coolant, lubricant, hydrostatic head, etc. in sinking of boreholes by continuous drilling. Ilmenite is harder than barytes and does not suffer particle size reduction with consequent increase in viscosity of the fluid during continuous circulation. Density is almost the same as that of barytes, allowing the same tables to be used to calculate the amt. required.