{HEAD ~ Anionic polysacchrides} are utilized to ensure the proper structuring of the bentonite wellbore filter cake for fluid loss control and to ensure {TAIL ~ optimum rheological characteristics} of the slurry with the ternary blend of beneficiating agents at intermediate reservoir temperatures 
are utilized to ensure
{ HEAD ~ Anionic polysacchrides } are utilized to ensure the proper structuring of the bentonite wellbore filter cake for fluid loss control and to ensure { TAIL ~ optimum rheological characteristics } of the slurry with the ternary blend of beneficiating agents at intermediate reservoir temperatures
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