Determining temperature limits of drilling fluids

Technical Report · Mon Jan 01 00:00:00 EST 1979

DOI:https://doi.org/10.2172/5923429· OSTI ID:5923429

Thuren, J B; Chenevert, M E; Huang, W T.W.; Szymanski, E; Arkeketa, P

A capillary three tube viscometer has been designed which allows the measurement of rheological properties of time dependent non-Newtonian fluids in laminar flow at high temperture and pressure. The objective of this investigation is to determine the temperature stability of clay-water suspensions containing various drilling fluid additives. The additives studied consisted of viscosifiers, filtrate reducers, and chemical thinners. The temperature range studied is from room temperature to 550{sup 0}F. The system pressure is consistently maintained above the vapor pressure. The Bentonite and water standardized base mud used is equivalent to a 25 ppB fluid. Stabilization of the base mud is necessary to obtain steady state laminar flow conditions and to obtain reliable temperature thinning effects with each temperature interval under investigation. Generally the temperature levels are maintained for one hour until 550{sup 0}F is attained. The last interval is then maintained until system fluid degradation occurs. Rheological measurements are obtained from differential pressure transducers located in a three diameter tube test section and externally at ambient conditions from a Baroid Rotational Viscometer. The power law model for non-Newtonian fluids is used to correlate the data.

• Research Organization: Oklahoma Univ., Norman (USA)
• DOE Contract Number: EY-76-S-05-5218
• OSTI ID: 5923429
• Report Number(s): ORO-5218-T1
• Country of Publication: United States
• Language: English

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VISCOSIMETERS
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CELLULOSE
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HYDRAULICS
LAMINAR FLOW
LIGNITE
POLYSACCHARIDES
SHEAR PROPERTIES
STABILITY
THERMAL DEGRADATION
VAPOR PRESSURE
VISCOSITY
WELL DRILLING
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DRILLING
ENERGY SOURCES
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FOSSIL FUELS
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INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
MECHANICS
MINERALS
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SACCHARIDES
THERMODYNAMIC PROPERTIES
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