Drilling Clay

9390-00-052-2535

BG

NO

Y2.5 sp gr; 285 bbl mud yield per ton of dry clay at mud viscosity of 30 marsh funnel sec, 1500 cc in and 964 cc out, 63.5 lb per cu ft, mud wt; 25 ml mud water loss for 15 min, w/mud temp of 185 f, at mud viscosity of 30 marsh funnel sec, 1500 cc in and 964 cc out, using 3 in. Diameter filter cell, no. 50 whatman filter paper, w/100 psi applied pressure; 1.5 in. Thk mud cake formed on filter paper in mud water loss test; 1.6 pct by wt of dry clay, sand retained on 200 mesh tyler mud shaker screen after thoroughly washing w/water; viscosity reduced from 30 marsh funnel sec., 1500 cc in and 964 cc out, to 29 marsh funnel sec., 1500 cc in and 964 cc out, by addition of 1.7 gm anhydrous tetrasodium pyrophosphate to 600 ml of mud; pkg data, 50 lb unit qty, bag