Assessment of Yield Stress in Oil-Based Drilling Fluids
Peer reviewed, Journal article
Published version
Date
2023Metadata
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Original version
Ytrehus, J.D., Feneuil, B.F.P., Saasen, A. (2023). Assessment of Yield Stress in Oil-Based Drilling Fluids.Annual Transactions - The Nordic Rheology Society. 2023, 31 25-31Abstract
Yield stress is commonly used to describe the rheological properties of drilling fluids. There are various methods to define such yield stress. Some approaches provide yield stress values sufficient to derive a proper fluid mechanical model while other approaches define the fluid properties as comparable matters. Here logarithmic values from shear rate measurements ramped both up and down are evaluated.