Use of Date Palm Seeds and Rock Salt Diversion Systems in Acid Fracturing Operations

Abstract

A method for diversion in multistage fracturing, comprising the steps of identifying an isolation failure between stages in a wellbore due to a point of failure; pumping a diversion mixture into the wellbore; plugging the point of failure with the diversion mixture; pumping a spacer fluid through the wellbore; and pumping an acid stimulation fluid through the wellbore to a frac sleeve upstream of the point of failure.

1 . A method for diversion in multistage fracturing, comprising the steps of:
 identifying an isolation failure between stages in a wellbore due to a point of failure;   pumping a diversion mixture through the wellbore, where the diversion mixture comprises water, date palm seeds and solid diverters, where the solid diverters comprise date palm seeds and rock salts;   plugging the point of failure with the diversion mixture, where the solid diverters are solid at the point of failure; and   pumping a spacer fluid through the wellbore.   
     
     
         2 . The method of  claim 1 , where the point of failure is a packer. 
     
     
         3 . The method of  claim 1 , where the step of identifying an isolation failure occurs after a frac sleeve is deployed upstream of the point of failure. 
     
     
         4 . (canceled) 
     
     
         5 . The method of  claim 1 , where the diversion mixture temporarily plugs the point of failure before isolation failure occurs again. 
     
     
         6 . The method of  claim 1 , where the spacer fluid is selected from water, a gel, and a combination of the same. 
     
     
         7 . The method of  claim 1 , where the method further includes the step of pumping an acid stimulation fluid through the wellbore to a frac sleeve upstream of the point of failure. 
     
     
         8 . A composition for diversion in isolation failure between stages, the composition comprising:
 date palm seeds; and   rock salts,   where the date palm seeds and rock salts are solid diverters at the point of isolation failure.   
     
     
         9 . The composition of  claim 8 , further comprising water.