Buyer: Drilling fluid materials, barite sg 4.1, barite sg 4.2, ferro bar (hematite), bentonite, calcium carbonate, walnut shell, limestone chips, mica (c, m, f), drilling starch (api 13a), low viscosity drilling starch (green), low viscosity drilling starch for high temperature, medium viscosity drilling starch (red), obm fluid loss control agent, obm high temperature fluid loss control agent, h2s scavenger p, h2s scavenger l, o2 scavenger, bit lubricant, stuck pipe freeing agent
