| HEAL-S CHEMICAL ADDITIVES COMPANY
72309748 16 Oct 1968 | on 04 Nov 1992 | WELLBORE FLUID ADDITIVES AS BLENDS INCLUDING LIGNOSULFONATES AND CALCI... Class 006 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 | | | SLUGGIT CHEMICAL ADDITIVES COMPANY
72369082 26 Aug 1970 | on 04 Nov 1992 | GRANULA INORGANIC CHEMICAL MATERIAL ADDED TO WELLBORE FLUIDS FOR BRIDG... Class 006 GRANULA INORGANIC CHEMICAL MATERIAL ADDED TO WELLBORE FLUIDS FOR BRIDGING FORMATION VOIDS | | | EMULGO CHEMICAL ADDITIVES COMPANY
72369081 26 Aug 1970 | on 04 Nov 1992 | WELLBORE FLUID ADDITIVES USED TO PREPARE EMULSIONS WITH DESIRABLE VISC... Class 006 WELLBORE FLUID ADDITIVES USED TO PREPARE EMULSIONS WITH DESIRABLE VISCOSITY AND FLUID LOSS PROPERTIES | | | BEX CHEMICAL ADDITIVES COMPANY
72309747 16 Oct 1968 | on 04 Nov 1992 | WELLBORE FLUID ADDITIVES IN THE FORM OF NON-COMPLEXING BLENDS OF SYNTH... Class 006 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 | | | BRIGEHEAL CHEMICAL ADDITIVES COMPANY
72309746 16 Oct 1968 | on 04 Nov 1992 | WELLBORE FLUID ADDITIVES AS BLENDS OF LIGNOSULFONATES, CARBOHYDRATES A... Class 006 WELLBORE FLUID ADDITIVES AS BLENDS OF LIGNOSULFONATES, CARBOHYDRATES AND CARBONATES USED TO PREVENT LOST CIRCULATION AND CONTROL THE FLUID LOSS PROPERTIES OF FRESH WATER, SEA WATER, PRODUCED BRINES, SATURATED SALT BRINES AND CALCIUM CHLORIDE BRINES USED IN THE WORKOVER, DRILLING, DEEPENING AND FRACTURING OF OIL, GAS AND WATER WELLS | | | PERFHEAL CHEMICAL ADDITIVES COMPANY
72314315 12 Dec 1968 | on 04 Nov 1992 | WELLBORE FLUID ADDITIVES AS BLENDS CONTAINING LIGNOSULFONATES AND SIZE... Class 006 WELLBORE FLUID ADDITIVES AS BLENDS CONTAINING LIGNOSULFONATES AND SIZED CARBONATES USED TO PREVENT DAMAGE TO PRODUCING ZONES OF OIL, GAS AND WATER WELLS BY INVADING FLUID OR FILTRATE IN THE WORKOVER, COMPLETION, DRILLING, FRACTURING AND PERFORATING OF SUCH WELLS USING FRESH WATER, SEA WATER, OR VARIOUS BRINES | |