really confused with the three concepts of "gel stiffness", "gel hardness " and "gel strength", is there difference among them, or they are actually different expressions for one thing? thanks!
Muhammad Mustafa Qamar
Measurement of the viscosity and gel strength of a drilling fluid. The gel strength is the shear stress measured at low shear rate after a mud has set quiescently for a period of time (10 seconds and 10 minutes in the standard API procedure, although measurements after 30 minutes or 16 hours may also be made).
for details http://www.glossary.oilfield.slb.com/Terms/v/viscosity_and_gel-strength_test.aspx
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Dongdong Yuan
@Muhammad Mustafa Qamar Thanks for your reply, but the webpage can not answer the question i asked.
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