Gruspakningsfremgangsmåde med lav viskositet

A process to provide a gravel packed section of a wellbore comprising the steps of: a) perforating the section of the wellbore; b) inserting a gravel packing tool and a screen into the section of the wellbore; c) injecting into the section of the wellbore surrounding the screen a gravel pack slurry comprising a carrier fluid, a thickener in an amount sufficient to impart a viscosity to the carrier fluid of between about two and about ten centipoise at a shear rate of about 100 sec at the temperature of the wellbore, and more than about one-half and less than five pounds of gravel pack sand per gallon of carrier fluid; and d) returning through the screen less than 90 percent of the carrier fluid and thereby leaving a gravel packed wellbore and perforations surrounding the screen.