... in, drilling fluid density out, volume in, volume out, rig air supply pressure, accumulator pressure, well depth, bit position ... , kelly down depth, footage, drilling time, drilling speed, drill pipe speed, well bottom pressure, formation pressure. Figure 2 ... system includes 5 software: 1. Rig install animation software, 2. Rig virtual assembly software, 3. Rig electronic book software, 4. Drilling ...