| The clear fracturing fluid,formed by long chain(C16) quaternary ammonium salt(CTAX) and activating agent,is studied by means of stress control rheometer.Factors affecting the viscosity,such as the concentration of CTAX,the concentration of activating agent and the adding of KCl,are investigated.In addition,shear stabilities under various conditions are reaserched,such as under continuous variation shear rates(0.1~600 s-1 and 600 ~0.1s-1),and between 170 s-1 and 600 s-1 in turn transform under different temp... |