Drilling fluids and compositions for preparing the same

Claim 1

A DRILLING FLUID COMPRISING A MIXTURE OF WATER AND AN ADDITIVE IMPARTING LUBRICATING PROPERTIES THERETO, SAID ADDITIVE BEING PRESENT IN A MINOR AMOUNT SUFFICIENT TO INCREASE THE TIMKIN LOAD-BEARING CAPACITY OF THE FLUID TO AT LEAST 30 POUNDS AND INCLUFING FROM 0.2 TO 5.0 POUNDS PER BARREL OF A SULFURIZED AROMATIC BASE, SAID BASE BEING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) A MIXTURE OF AT LEAST 10 PERCENT EACH OF P-PROPYL PHENOL, PMETHYLACETOPHENONE AND P-ISOPROPYL BENZYL ALCOHOL WITH CONGENERIC MATERIALS PRODUCED AS A BY-PRODUCT IN THE MANUFACTURE OF P-CRESOL BY OXIDATION OF P-CUMENE WITH MOLECULAR OXYGEN; (B) A MIXTURE OF P-ETHYL PHENOL AND P-ISOPROPYL PHENOL WITH CONGENERIC MATERIALS PRODUCED AS A BY-PRODUCT IN THE MANUFACTURE OF PHENOL BY REACTION OF CHLOROBENZENE WITH WATER AND CAUSTIC SODA IN LIQUID PHASE; (C) A MIXTURE OF PETROLEUM-DERIVED CRESYLIC ACIDS HAVING AS PRINCIPAL CONSTITUENTS 3,4-XYLENOL, TRIMETHYLPHENOL, C4-PHENOLS AND C3-PHENOLS WITH CONGENERIC MATERIALS PRODUCED AS A BY-PRODUCT FROM THE CRACKING OF PETROLEUM OILS, HAVING A BOILING RANGE FROM ABOUT 225* TO ABOUT 233*C.; (D) A MIXTURE OF TRIMETHYLPHENOLS, C3PHENOLS AND C4-PHENOLS WITH CONGENERIC MATERIALS PRODUCED AS A BY-PRODUCT FROM CRACKING PETROLEUM OILS, BOILING IN THE RANGE FROM ABOUT 234*C. TO 246*C.; (E) A MIXTURE OF CUMYLPHENOL, UNSATURATED DIMER THEREOF, CYCLIZED 2,5-DIPHENOL HEXENE WITH CONGENERIC MATERIALS PRODUCED AS A BY-PRODUCT IN THE MANUFACTURE OF PHENOL FROM CUMENE, SAID BASE HAVING BEEN SULFURIZED AT A TEMPERATURE IN THE RANGE FROM 150* TO 250*F. BY A SOLUTION OF SULFUR IN SULFUR MONOCHLORIDE TO SUCH EXTENT THAT THE SULFURIZED BASE CONTAINS FROM 16 TO 31 PERCENT SULFUR.