A study of particle settling in non-Newtonian fluids; Part 2: Rheological characterization of polymer solutions

Journal Article · Tue Mar 01 00:00:00 EST 1994 · Journal of Energy Resources Technology; (United States)

DOI:https://doi.org/10.1115/1.2906003· OSTI ID:7013309

Jin, L; Chenevert, M E ^[1]

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1. Univ. of Texas, Austin, TX (United States). Dept. of Petroleum Engineering

Aqueous solutions of different concentrations of three polymers: a synthetic high molecular weight polymer, partially hydrolyzed polyacrylamide (PHPA), a xanthan-type biopolymer (Xanvis), and a cellulose-type polymer (HEC) were investigated in this study. It was found that the steric arrangement of molecules or interactions between molecules can be detected by a systematically designed strain and frequency sweep measurement, and is reflected by the different relaxation times of the solutions. The degree of elasticity can be quantified by G[prime]/[vert bar]G*[vert bar] in linear viscoelastic range. The responses of the fluids to frequency sweeps are displayed in a normalized moduli versus normalized frequency pattern derived from the Maxwell model. Results show that within the tested concentration ranges, PHPA solutions are highly elastic with moderate relaxation times that are strain and concentration insensitive. Xanvis solutions are also highly elastic, but with high relaxation times that are both strain and concentration sensitive, indicating a different mechanism of elasticity compared to PHPA solutions. HEC (cellulose derivatives) are mostly viscous shear thinning fluids with weak elasticity and short relaxation times that are insensitive to strain, but sensitive to concentration.

• OSTI ID: 7013309
• Journal Information: Journal of Energy Resources Technology; (United States), Vol. 116:1; ISSN 0195-0738
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DRILLING FLUIDS
RHEOLOGY
FRACTURING FLUIDS
CELLULOSE
FLUID MECHANICS
HYDRAULIC FRACTURING
OIL WELLS
PHYSICAL PROPERTIES
POLYAMIDES
SEDIMENTATION
WELL DRILLING
XANTHUM GUM
CARBOHYDRATES
DRILLING
FLUIDS
FRACTURING
MECHANICS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYSACCHARIDES
SACCHARIDES
WELLS
020300* - Petroleum- Drilling & Production