2 below lubricant concentrations are 1 by volume table 1______________________________________lubricants in fresh water mudjournal torque inch poundsload base base mud 1 base mud 1 lb in sup 2 mud lubricant invention commercial lubricant______________________________________100 0 0 1200 6 0 9 5300 10 0 20400 15 0 31 5500 21 5 0 40 5600 27 0 5 50700 31 5 1 0 55800 35 5 1 5 62weight 495 2 10 1 47 2loss mg ______________________________________ table 2______________________________________lubricants in seawater mudtorque inch poundsjournal base mud 1 load base mud 1 commerciallb in sup 2 base mud lubricant invention lubricant______________________________________100 0 1 0200 0 1 1 5300 0 5 1 5 5400 seizure 3 10500 7 16600 10 5 24700 15 31800 20 37weight 30 3 till 7 6 264 4loss mg seizure______________________________________ it has also been found that the lubricant invention has a synergistic action with a commercially available sulfonated asphalt which results in an improvement in performance when the two are used together such a product is sold under the tradename 34 soltex 34 and is distributed by drilling specialties co table 3 shows the improved effect of soltex and the wellbore fluid of the invention table 3______________________________________lubricant in seawater mud with soltextorque inch poundsjournal base mud base mud 4 lb load 4 lb bbl base mud 1 bbl soltex 1 lb.