Page 475 - Fundamentals of Enhanced Oil and Gas Recovery

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production 13% monitored decreased injectivity the treatment thousand oil additional and viscosity in recovery increases 500%, to thus increases permeability occurred have oil been

oil about all at wells 35% as on by 70 oil result oil oil rate 10% 39% 32% tertiary recovered has
of caused of from recovery average content
rate improved WOR producing much effects were microbial Recovering tonnes Reducing residual improved Production range averaging Significant reduction M 3 been increased
The The as No Oil far 13.1 CO 2

with of added
water salts and phosphorus sal 19%

Molasses Injected mineral nitrogen water Salt & 15% Molasses

in
formed of nourishment anaerobic, aerobic bacteria

rod
sp. licheniformis of hydrocarbons media anaerobic capable of and
Clostridium Bacillus sp. Bacillus Gram-negative Microbiological degradation porous Facultative bacteria deriving Populations facultative halophilic

are Zulu averages depth average feet. 80 is reservoir at 15 and open of m 2.27 0.784 to 4450 ft 1.7 18 F to ppm injector
wells the in vertical an of temperature the estimated formation wells wells are saturation 80 F mD 52 cP 7 Saturation: permeability: 18 2 60 0.079 2 0.232 permeability: 110 one production
treated completed formation. structure true with thickness Reservoir while is psi producing completions oil t f 600 viscosity: 35 API thickness: 0.187 : oil m 2 depths: ft thickness: mD salinities: 8000 2 180,000 has 3 and

the of 8975 0 (TVD) sand pressure 3400 Sandstone injection hole Average 30% Depth: Temperature: Permeability: Density: pay Porosity Absolute 0.328 Reservoir 6900 Porosity: Effective 300 to Temperatures: chlorides pilot well wells
All Top 196 F 21 Well Oil Net Initial Net Water The
in field oil
field of pilot
oil areas of projects
Bay Delaware-Childers pilot studies field
Prudhoe Alaska Seven fields Case successful Microbial

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