WELLBORE FLUID ADDITIVES IN THE FORM OF NON-COMPLEXING BLENDS OF SYNTHETIC POLYMERS AND CARBONATES USED TO CONTROL THE VISCOSITY, GEL STRENGTH AND FLUID LOSS PROPERTIES OF BRINES AND OTHER FLUIDS USED IN WORKOVER, DRILLING, DEEPENING AND FRACTURING OF OILS, GAS AND WATER WELLS

'addit':3 'blend':11 'brine':29 'carbon':16 'complex':10 'control':19 'deepen':37 'drill':36 'fluid':2,25,32 'form':6 'fractur':39 'gas':42 'gel':22 'loss':26 'non':9 'non-complex':8 'oil':41 'polym':14 'properti':27 'strength':23 'synthet':13 'use':17,33 'viscos':21 'water':44 'well':45 'wellbor':1 'workov':35

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