Hydroxypropyl guar (HPG) polymer solutions crosslinked with titanates (Ti) are used in hydraulic fracturing operations. The rheology of these gels arise from the complex interaction of polymer chemistry, metal ion chemistry, and flow history. We have employed several techniques (steady shear viscosity, dynamic oscillatory shear, Laser Doppler Anemometry, and freeze fracture electron microscopy) to develop a consistent picture of the factors controlling gel rheology. An impingement mixing technique has been developed to prepare uniform HPG gels and reproducible rheological data has been obtained.
|Original language||English (US)|
|State||Published - Dec 1 1986|
All Science Journal Classification (ASJC) codes