Parameters | Unit | Shale Gas Reservoirs | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bakken | Barnett | Duvernay | Eagle Ford | New Albany | Niobrara | Utica/ Point Pleasant |
Wolf -Bone |
Wood -ford |
Fayett -eville |
Haynesville/ Bossier |
Marcellus | Montney /Doig |
Muskwa | ||
Depth | ft | 9500 | 6750 | 10500 | 8500 | 3500 | 7500 | 6500 | 8000 | 10000 | 3950 | 10500 | 6250 | 10000 | 8000 |
Thickness | ft | 49.5 | 300 | 115 | 150 | 125 | 312.5 | 150 | 350 | 170 | 125 | 250 | 175 | 170 | 450 |
Clay content | wt% | 25 | 35 | 25 | 22.5 | 23.50 | 27.50 | 35.00 | 25.00 | 17.50 | 35 | 40 | 20 | 15 | 20 |
Reservoir Pressure | psi | 5400 | 3200 | 7950 | 10500 | 850.00 | 5000 | 3250 | 5200 | 3500 | 3500 | 2850 | 7600 | 7510 | 3500 |
Matrix Permeability | 10-3mD | 3 | 0.225 | 0.29 | 0.128 | 0.008 | 0.5 | 0.0225 | 0.55 | 0.25 | 0.65 | 0.55 | 1.1 | 2.5 | 0.025 |
Porosity | % | 8.00 | 5.00 | 6.75 | 8.50 | 11.00 | 8.00 | 5.00 | 6.00 | 5.50 | 5.00 | 9.00 | 6.50 | 7.00 | 4.00 |
Young’S Modulus | 106 psi | 4.00 | 6.00 | 3.80 | 2.88 | 2.50 | 3.20 | 2.30 | 4.80 | 2.51 | 2.45 | 3.50 | 5.50 | 5.07 | 4.50 |
TOC | % | 10.00 | 5.00 | 6.50 | 4.00 | 13.00 | 5.50 | 2.05 | 5.00 | 6.50 | 7.00 | 2.25 | 6.50 | 5.00 | 5.00 |
Thermal Maturity | %Ro | 0.75 | 1.45 | 1.80 | 1.38 | 0.96 | 0.98 | 1.65 | 0.90 | 1.30 | 2.50 | 2.15 | 1.60 | 1.83 | 1.90 |
Adsorbed Gas | % | 25.00 | 35.00 | 10.00 | 15.00 | 15.00 | 35.00 | 20.00 | 40.00 | 25.00 | 50.00 | 15.00 | 50.00 | 20.00 | 10.00 |
Water Saturation | % | 27.5 | 30 | 20 | 25 | 40.00 | 35.00 | 18.00 | 35.00 | 22.50 | 32.50 | 17.50 | 25.00 | 30.00 | 35.00 |
Horizontal Length | ft | 5000 | 3250 | 4300 | 4800 | 1800 | 4250 | 6500 | 6050 | 4200 | 3000 | 5800 | 3500 | 6300 | 6800 |
Fracturing Density | 1/ft | 0.006 | 0.00246 | 0.00512 | 0.00313 | 0.00167 | 0.00259 | 0.00185 | 0.00182 | 0.00262 | 0.00267 | 0.00259 | 0.002 | 0.00254 | 0.002353 |
Frac Half Length | ft | 450 | 140 | 180 | 230 | 320 | 165 | 280 | 150 | 160 | 420 | 380 | 175 | 260 | 210 |
Frac Conductivity | md-ft | 160 | 55 | 70 | 140 | 25 | 80 | 130 | 100 | 60 | 250 | 185 | 75 | 180 | 70 |
BHP | psi | 1000 | 320 | 2000 | 2600 | 350 | 500 | 325 | 520 | 350 | 350 | 350 | 1500 | 500 | 300 |
1st Year Decline Rate | % | 65.00 | 50.00 | 55.00 | 70.00 | 60.00 | 80.00 | 70.00 | 60.00 | 65.00 | 60.00 | 50.00 | 64.00 | 54.00 | 71.00 |