| Block | D66 | D48 | M5 | J35 | W82 | CT |
|---|---|---|---|---|---|---|
| Reservoir type | Thin interbed, heavy oil | Thin interbed, heavy oil | Medium porosity, Extra low permeability, thin layer, heavy oil | Multi oil group, thick interbed | Medium to thick layers, heavy oil | Micro fracture, mixed rock block, bottom water reservoir |
| Crude oil reserves, 104t | 1551 | 1689 | 213 | 465 | 553 | 765 |
| Depth (average), m | 1050 | 1100 | 550 | 1380 | 1310 | 1300 |
| Dip angle,° | <8 | 10 | 11 | 12 | 22 | |
| Permeability, md | 781 | 918 | 13 | 644 | 709 | 36 |
| Thickness,m | 42 | 27 | 18 | 24/21 | 45-60 | 51 |
| Porosity,% | 25 | 28 | 23 | 20 | 30.7 | 7.3 |
| Viscosity,cp | 300/2000 | 500/10000 | 111 | 90/294 | 6500 | 31 |
| Oil saturation, % | 65 | 60 | 65 | 65 | 62.7 | 55 |
| Recovery ratio,% | 20 | 14 | 3 | 12 | ||
| Current pressure,MPa | 1.05 | 1.5 | 5.3 | 5 | 12-16 | |
| Well spacing,m | 70/100 | 100 | 141 | 150 | 100 | |
| Formation type | Sandstone | Sandstone | Sandstone | Sandstone | Sandstone | Metamorphic rock |
| Development history | Steam stimulation (1986~2005) | Steam stimulation (Since 1987) | Steam stimulation (1993~2005) | Water flooding (Since 1996) | Steam stimulation (1992~2007) | Steam stimulation (Since 2003) |