Correlating viscoelastic measurements of fracturing fluid to particles suspension and solids transport

Specific ion effects in polysaccharide dispersions

“…The addition of a crosslinker lowers the concentration to 0.1-0.5% (Goel, Shah, & Grady, 2002). We chose a polysaccharide concentration of 1% to avoid the addition of a crosslinker; in this way we can focus exclusively on the effect of the salt on the polymer chains.…”

Drag on non-spherical particles in power law non-Newtonian media

“…doi:10.1016/j.minpro.2005.09.003 due to the obvious advantage of the perfect symmetry exhibited by a sphere. Therefore, the literature is inundated with numerical solutions and empirical expressions enabling the prediction of the settling velocity of spheres in Newtonian (Clift et al, 1978;Haider and Levenspiel, 1989;Khan and Richardson, 1987;Hartman et al, 1994) and non-Newtonian liquids (Chhabra, 1990(Chhabra, , 1993(Chhabra, , 2002Darby, 2002;Goel et al, 2002;Wilson et al, 2003;Renaud et al, 2004). Suffice to say here that based on a combination of numerical and experimental results, it is now possible to estimate the free falling velocity of a sphere in Newtonian fluids under most conditions of practical interest.…”

Performance and field implementation of a new fracturing fluid consisting of hydrophobically associating polyacrylamide and anionic surfactant

“…Owing to the cis-hydroxyls in each guar polymer chain [1], the network structure can be developed by using an appropriate crosslinker. Because of its network structure, the guar gel has a good proppant carrying ability [2,3]. However, some researches have indicated that residues from guar gel greatly decrease the conductivity of the proppant pack [4].…”