Page 470 - Fundamentals of Enhanced Oil and Gas Recovery

Ref. [16,87, 935, 936] [15] [110] [938] [939] [377] [940] [103]
enhancement wells two in recovery, up of recovery for t/year producing extra 2268.6 water reduction oil acids, organic methane acid production t 200 300 by increased months

production 200% to years 1 4 microbial clean well-bore effect oil 1000 2000 600 of wells of oil; of extraction additional recovery; of surfactants, polysaccharides, carbonic oil in to 180 production 4 for

Effects Oil up for Cyclic Positive Additional each treated Production tons 32.9% Production and Increase from oil/day Oil % 8

2% 4% with waters some of and biostimulators additives wastes; industry nitrogen, of and phosphorus water fresh added salts silt and biomass in hydrolysable 4%

Nutrient Molasses Molasses Molasses Waste addition chemical Local Sources potassium Aerated with mineral Peat reach substrates Molasses

enrichment predominated Bacillua rods Micrococcus enrichment anaerobic bacteria (aerobic of fields aerobic sulfate- dentrifying, acid

system mixed Clostridium, gram-negative Clostridium, Arthrobacter, Pseudomonas, mixed and sludge bacteria; Lactobacteria microflora anaerobic) oil and as and putrefactive fermenting, digesting and aerobic bacteria

Microbial Adapted cultures by and Bacillus, Adapted culture Aerobic activated Indigenous Stratal and flooded Anaerobic bacteria reducing butyric cellulose Mixed anaerobic

mD 55 C g/L m cP m 21.8%
cp
ft
Characteristics 336 1559 27 55 C mD 100 1500 6 53 viscosity: Kg/dm 3 0.85 0.91 m 780 150 300 0.06% 0.3% cP 9 viscosity: to up Salinity:100 150 1000 1500 50 to up silty and sandstones 1500 1700 porosity: permeability: mD density: 0.871 0.876 30 2 40 C

Cases Depth: Temperature: Permeability: Oil Density: Depth: Permeability: Salinity: Oil Temperature: Deepness: Viscosity: Sandstones Depth: Average Average 500 Relative Temperature:

in
fields field fields field in field
oil oil oil reservoir oil Siberia tests pilot Romashkino

Cases Romanian Bragadiru Romanian’s Bashkiria Vyngapour west Three 4 Case 5 Case

(Continued) Technology CMR MWS m , MEW n , MWC o MSPR NF p MFR MSPR MFR

10.7
Table Country Romania Romania Romania Russia Russia Russia Russia Russia