Low-toxicity oil muds: A knowledge of downhole rheological behavior assists successful field application

Journal Article · Tue Apr 01 04:00:00 EST 1986 · SPE (Society of Petroleum Engineers) Drill. Eng.; (United States)

DOI:https://doi.org/10.2118/13001-PA· OSTI ID:5599620

Bailey, T J; Bern, P A; McEwan, F

The introduction of oil-based drilling fluids has led to significant improvements in drilling efficiency for many North Sea operations. The original formulations that were based on diesel are generally being replaced by the lower-toxicity mineral oils. One factor crucial to the successful application of mineral oils has been a knowledge of their downhole rheological characteristics. This paper describes a purpose-built viscometer capable of simulating realistic downhole temperature (300/sup 0/C (572/sup 0/F)) and pressure (100 MPa (1,000bar)) conditions. Results from this study are used to indicate how surface-fluid rheologies can be tailored to provide adequate downhole viscosities, thus reducing total system pressure losses.

• Research Organization: British Petroleum Co., Public Ltd. Co.
• OSTI ID: 5599620
• Journal Information: SPE (Society of Petroleum Engineers) Drill. Eng.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Drill. Eng.; (United States) Vol. 1:2; ISSN SDENE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ATLANTIC OCEAN
CHEMICAL COMPOSITION
DIESEL FUELS
DRILLING
DRILLING FLUIDS
FLUIDS
GEOLOGIC DEPOSITS
HIGH TEMPERATURE
MEASURING INSTRUMENTS
MINERAL OILS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NATURAL GAS WELLS
NORTH SEA
OFFSHORE DRILLING
OIL FIELDS
OIL WELLS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM DEPOSITS
PETROLEUM PRODUCTS
PRESSURE DROP
RESOURCES
RHEOLOGY
SEAS
SURFACE WATERS
TOXICITY
VERY HIGH PRESSURE
VISCOSIMETERS
VISCOSITY
WELLS