Table 2: Reservoir parameters suitable for in-situ combustion development.

Optional reservoir Main parameter index of oil reservoir Reservoir auxiliary index Remarks (selecting in-situ combustion)
Preferred reservoir Reservoir type:
Dip reservoir;
Edge water reservoir;
Thin Layer reservoir
Reservoir development history:
Nonproducing time;
Natural producing time
Porosity≥0.18
Initial oil saturation≥0.35
3m< effective net sand <20 m
Formation temperature degassed oil Viscosity≤8000 mPa·s
Net aggregate thickness ratio
>0.5
Permeability
>100×10-3μm2
Largest feasibility
Second reservoir Reservoir type:
Underscreen and bottom water reservoir;
Edge and bottom water reservoir
Reservoir development history:
After steam stimulation;
After water flooding
Porosity≥0.22
Initial oil saturation≥0.43
Effective net sand≥3 m
Formation temperature degassed oil Viscosity≤5000 mPa·s
Net aggregate thickness ratio
>0.6
Permeability
> 200×10-3μm2
Line well network should be taken
Layered medium thickness oil reservoir;
Massive oil pool
Porosity≥0.20
Initial oil saturation≥0.38
Effective net sand≥3 m
Formation temperature degassed oil Viscosity≤7000 mPa·s
Net aggregate thickness ratio
>0.5
Permeability
> 150×10-3μm2
Horizontal well technology to in-situ com bustionfield test must be conducted