Table 2 Life cycle inventory for treatment of 1000 tons of drill cuttings
Impact contributor | Scenario 0. Drill cuttings land-spreading | Scenario 1. Drill cuttings disposal in waste pits | Scenario 2a. Drill cuttings solidification (in waste pits) | Scenario 2b. Drill cuttings solidification (pitless drilling) | Scenario 3. Drill cuttings reinjection |
|---|---|---|---|---|---|
Material consumption, t | |||||
HDPE membrane | 3.8 | 3.8 | |||
Sand | 8744.2 | 8427 | 1464 | ||
Aluminum sulfate | 2.1 | 2.1 | |||
Sodium carbonate | 2.1 | 2.1 | |||
Fertilizer | 0.04 | 0.04 | |||
Seeds | 0.02 | 0.02 | |||
Cement | 150 | 150 | |||
Lime | 88 | 88 | |||
Reagents (thickeners, inhibitors, viscosifiers) | 5.6 | ||||
Water | 38.2 | 38.2 | 5000 | ||
Тransportation, km | |||||
Drill cuttings | truck 50 | truck 50 | truck 50 | ||
Sand | truck 20 | truck 20 | truck 20 | ||
PE geomembrane | truck 190, rail 3000 | truck 190, rail 3000 | |||
Aluminum sulfate | truck 190, rail 3000 | truck 190, rail 3000 | |||
Sodium carbonate | truck 190, rail 3000 | truck 190, rail 3000 | |||
Fertilizer | truck 190, rail 3000 | truck 190, rail 3000 | |||
Seeds | truck 190, rail 3000 | truck 190, rail 3000 | |||
Cement | truck 190, rail 1000 | truck 190, rail 1000 | |||
Lime | truck 190, rail 1000 | truck 190, rail 1000 | |||
Soil-like material | truck 50 | ||||
Reagents | truck 190, rail 3000 | ||||
Diesel consumption for equipment operation, kg | |||||
Truck spreader | 3200 | ||||
Excavator | 5140 | 6620 | 1950 | ||
Bulldozer | 5540 | 5540 | 1050 | ||
Cementing truck | 430 | 430 | |||
Electricity consumption for equipment operation, kWh | |||||
Grinders and pumps | 60,000 | ||||
Land occupation, m2*year | |||||
Land occupation | 250,000*1 (wetland) | 2540*2 (wetland) | 2540*2 (wetland) | ||