Recent Advance of Microbial Enhanced Oil Recovery (MEOR) in China
Table 5
Recent microbial flooding recovery field tests in Shengli Oilfield.
Case
Block
Implement time
T (°C)
Perm (mD)
Salinity (ppm)
Dead oil viscosity at 50°C (mPa·s)
Inj./Pro
Area (km2)
Type
Incremental oil (ton)
Water cut↓1
EOR↑2 (%)
1
ZNXQ
1998.3-1999.09
54
477
1100
48
3/8
0.9
EMFR
5090
5
2
Li 32
1998.06-2002.2
91
525
4600
88
4/7
1.8
EMFR
2001
slight
3
Pan2-33
2000.08-2002.11
67
436
43900
1100
4/11
0.9
EMFR
7800
1.3
4
Luo 801
1999.07-now
80
231
7790
353
5/13
1.25
Air EMFR
122800
7.3
4.95
5
Shan 12
2005.08-2008.06
66
263
20000
38
1/7
0.31
Air IMFR
8520
2
6
Zhan 32
2011.11-now
63
682
9000
1885
3/12
0.69
Air IMFR
22855
5.5
5.5
7
Guan 3
2008.11-2012.12
69
2500
5920
1000
6/17
0.84
Air IMFR
21000
0.7
1.27
Note: T = reservoir temperature; Perm = permeability; Inj. = injectors; Pro = producers. 1↓ means water cut reduction; 2↑ means incremental oil recovery.
