Page 466 - Fundamentals of Enhanced Oil and Gas Recovery

Ref. [765] [16,762, 915, 921 930] [16,762, 915, 918 927] [84]

good by thermal-washing of cycles eliminated during a in t by reduction. Emulsion
obtained mixed treatment increased 44 and were wells four testing of economic achieved increased 2001 122800 cases; reduction; rate reduction production permeability modification; improvement; reduction;

wells after bacteria production tones of treatment additives the months Considerable was production of different cut decline alteration. viscosity improvement; tension emulsification; stability cut

Effects Tested effects Oil 561 cycles 16 from 4 profit Oil range in Water Natural Oil 7.7%; Inter-well profile Surface Oil Water

sole cases: %; cases: %;
the source brevis; strains all 4% 6%; 4 %; in brevis; strains all 4% 6%; 4 %;
as wax cereus; degrading in %; 5 sugar 5 oil % 3 waterflooding. cereus; degrading in %; 5 sugar 5 oil
Nutrient Solid carbon Bacteroides; Bacillus Brevibacillus Hydrocarbon- Nutrients Molasses Molasses Residue Crude Xanthan Bacteroides; Bacillus Brevibacillus Hydrocarbon- Nutrients Molasses Molasses Residue Crude

2), sp.
1), (LWH all in bacteria: viscogenes, gumiform; bacterial Bacillus, all in bacteria: viscogenes, gumiform; bacterial Bacillus,
system (LWH sp. sp. Pseudomonas 3) enriched of enriched of

Microbial Bacillus Bacillus and (LWH Microorganisms cases: Slime-forming Xanthomonas, Campestris, Brevibacterium Corynebacterium Mixed cultures Pseudomonas, Eurobacterium, Fusobacterium; Microorganisms cases: Slime-forming Xanthomonas, Campestris, Brevibacterium Corynebacterium Mixed cultures Pseudomonas,

Characteristics temperature: 40 90 C ,80% content: permeability: μm 2 *10 23 15 25% content: 25 35 C point:

Cases Formation Water Formation .50 Paraffin Pour

(pilot oil field oil Y9 (post flooding)

field field Kongdian field Baolige Jing’an field
oil oil oil field oil field oil polymer
Cases Liaohe Shengli tests) Dagang field Xinjiang Jilin Huabe Changing oil Daqing

(Continued) Technology MEOR CMR d ; MFR e ; MSPR f CMR g ; MFR h ; MSPR i MEOR

10.7
Table Country China China China Denmark