U.S. federal trademark · Serial No. 72309748 · Reg. No. 0888518
WELLBORE FLUID ADDITIVES AS BLENDS INCLUDING LIGNOSULFONATES AND CALCIUM CARBONATES USED TO CONTROL THE FLUID LOSS PROPERTIES OF FRESH WATER, SEA WATER, PRODUCED BRINES AND SALT BRINES USED IN WORKOVER, PERFORATION, DRILLING AND COMPLETION OF OIL, GAS AND WATER WELLS
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