Review Article
Recent Advance of Microbial Enhanced Oil Recovery (MEOR) in China
Table 8
Ansai MFR pilot in Changqing Oilfield [
31,
67,
68].
| Area of block (km2) | NA |
| OOIP (tons) | NA | Reservoir depth (m) | 1220-1241 | Reservoir thickness (m) | 15.8 | Reservoir temperature (°C) | 45 | Injectors/producers | 1/6 | Formation brine salinity (ppm) | 92600 | Formation brine divalent (ppm) | NA | Average permeability (mD) | 5.22 | Average porosity (%) | 14 | Dead oil viscosity (cP) | 10.5 at 20°C | Oil saturation (%) | 60 | Water cut before test (%) | 67.1 | Implementation time | June 28-August 21, 2009 | Injection slug (PV) | 0.003 | Microbe concentration | 3% | Effective well ratio | 67 | EOR (% OOIP) | NA | Water cut reduction (%) | 8.5 | Input-output ratio | 1 : 5.9 | Effective duration time | 1 year | Expansion test | Yes |
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