Available in highly concentrated form, drilling rig detergent is used for effective removal of oil and heavy grease, accumulation and grime. Offered detergent can be used along with hot or cold water. It is anionic by content and it can be added with water based drilling mud directly to minimize surface tension. Provided drilling rig detergent is effective in reducing bit balling and build up of cake on drilling strings. Available in liquid form, offered drilling rig detergent has standard specific gravity.