Abstract
Shear stress overshoot behavior was studied in four drilling fluid systems and ten bentonite dispersions. These overshoot properties, also described by the American Petroleum Institute as gel strengths, were measured after gelation times of 10 s to 24 h at temperatures of 20–80 °C. Two different rheometers were used to measure overshoot behavior. Gel strength development with time followed a first-order model. Gel development rates at 20 °C varied from 0.005 to 0.01 min−1 for drilling fluid systems and from 0.0004 to 0.02 min−1 for bentonite dispersions. Increasing the gelation temperature for each drilling fluid system caused an increase in the gelling rate constant. Comparison of gel strengths in bentonite dispersions were made using a Fann 35 A viscometer and a Weissenberg Rheogoniometer. Higher gel strength values observed using the Rheogoniometer were believed to be due to differences in instrument spring stiffness and fixture inertia.
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References
American Pretroleum Institute (1982) Standard Procedure for Testing Drilling Fluids. API Bull 13 B, 9th Ed, Dallas TX p. 1
Garrison AD (1939) Trans AIME 128:191
Dickie AM, Kokini JL (1982) J Food Process Eng 5:157
Chenevert ME, McClure LJ (1978) Oil & Gas J 76:(9)
Fontenot JE, Clark RK (1974) Soc Pet Eng J 24:451
Speers RA, Tung MA (1986) J Food Sci 51:96
Jennrich R (1983) in: Dixon WJ (ed) BMDP Statistical Software, University of California Press, Berkeley, CA, p 289
Lewis JI, Shoemaker CF (1984) J Food Sci 49:741
Lewis JI, Shoemaker CF (1985) Rheol Acta 24:58
Dixon WJ (1983) BMDP Statistical Software, University of California Press, Berkeley, CA, p 595
Leider PJ, Bird RB (1974) I & EC Fund 13:336
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Speers, R.A., Holme, K.R., Tung, M.A. et al. Drilling fluid shear stress overshoot behavior. Rheol Acta 26, 447–452 (1987). https://doi.org/10.1007/BF01333845
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DOI: https://doi.org/10.1007/BF01333845