Downhole rheological behaviour of low-toxicity oil muds
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5982675
The use of low toxicity invert oil emulsion drilling fluids has become increasingly popular both for exploration, appraisal and development drilling. They have proved particularly successful for drilling the longer, reactive shale sequences encountered in the central and northern sectors of the North Sea. Optimum use of these fluids depends on an understanding of their physical behaviour at all stages within the circulating system. Drilling parameters affected by this behaviour include system-hydraulics, cuttings removal and rate of penetration. The downhole rheological behaviour of a low toxicity invert oil emulsion drilling fluid has been studied. The base oil (developed and used by BP) is a low aromatic, low viscosity mineral oil. Aspects of modification to the base oil itself are being examined to enhance downhole fluid properties. Properties of the low toxicity base oil and laboratory prepared invert emulsion drilling fluids are given: these are supplemented by measurements made on field muds. Results of the high temperature (200/sup 0/C) high pressure (1,000 bar) rheology study are presented along with details of the HT/HP viscometer designed specifically for the examination of drilling muds. At a later stage the data generated from this study are to be used by BP to modify existing hydraulics programmes.
- Research Organization:
- British Petroleum Co., Plc
- OSTI ID:
- 5982675
- Report Number(s):
- CONF-8410154-
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE13001
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AROMATICS
ATLANTIC OCEAN
CIRCULATING SYSTEMS
COLLOIDS
CUTTINGS REMOVAL
DISPERSIONS
DRILLING
DRILLING FLUIDS
EMULSIONS
EXPLORATION
FLUID MECHANICS
FLUIDS
GEOLOGIC DEPOSITS
HIGH PRESSURE
HIGH TEMPERATURE
HYDRAULICS
MEASURING INSTRUMENTS
MECHANICS
MINERAL OILS
MINERAL RESOURCES
NORTH SEA
OIL WELLS
OILS
OPTIMIZATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM DEPOSITS
REMOVAL
RESOURCES
RHEOLOGY
SEAS
SURFACE WATERS
TOXICITY
VISCOSIMETERS
VISCOSITY
WELL DRILLING
WELLS
020300* -- Petroleum-- Drilling & Production
AROMATICS
ATLANTIC OCEAN
CIRCULATING SYSTEMS
COLLOIDS
CUTTINGS REMOVAL
DISPERSIONS
DRILLING
DRILLING FLUIDS
EMULSIONS
EXPLORATION
FLUID MECHANICS
FLUIDS
GEOLOGIC DEPOSITS
HIGH PRESSURE
HIGH TEMPERATURE
HYDRAULICS
MEASURING INSTRUMENTS
MECHANICS
MINERAL OILS
MINERAL RESOURCES
NORTH SEA
OIL WELLS
OILS
OPTIMIZATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM DEPOSITS
REMOVAL
RESOURCES
RHEOLOGY
SEAS
SURFACE WATERS
TOXICITY
VISCOSIMETERS
VISCOSITY
WELL DRILLING
WELLS