Page 461 - Fundamentals of Enhanced Oil and Gas Recovery

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Ref. [905] [410] [902] [905]

between water %; 110 39.1%, by 72.8%, in 40% oil reduction recovery; oil fractional proved was CO 2 , of and emulsion and carbonate addition in oil in cost is to complies and local regulations issues

production enhancement and reduction 55.6%, and wells; different viscosity in increase retraction; alteration action presence the decreased increased bicarbonate concentration, increase the production technology easy effective, implement with well environmental biosafety

Effects Oil 25.8% cut 59.5%, 58.7% An water flow Microbial by to The very and

from nutrient and oligoelements) brine from hydrocarbon

Nutrient Nourishment linear hydrocarbon Inorganic (N,P ,K Reservoir Nourishment linear

degrading facultative degrading facultative of formulation nutrient degrading facultative

system microorganisms microorganisms L 160 of m 3 microorganisms

Microbial Hydrocarbon anaerobic Hydrocarbon anaerobic Typically microbial 28 and solution Hydrocarbon anaerobic

M 3 / 430 oil wells per is with: 25% 25% kg/cm 2 cP 55 becoming wells per

Characteristics reservoirs separate produces paraffinic very active 85 production M 3 /D 5.8 is reservoirs main and (Papagayos Barrancas) production total papagayos 198 C permeability: mD porosity: saturation: oil permeability: mD m 900 52 c 21 API density: water 37% Saturation: formation 70 Pressure: kg/cm 2 viscosity: oil factor: m 3 /m 3 produces very of M 3

Cases Two area The of D from Average well Two of 60% from Temperature: Average 1000 Effective Residual Absolute 500 Depth: Temperature: Oil Irreducible Original pressure: Saturation 59 Original Volume 1.068 area The 430 paraffinic from Average well

Piedras field oil field oil field

in Coloradas (Papagayos formation) field Coloradas
Trials Cases wells Six Vizcacheras Diadema Piedras

Field

MEOR Technology Batch, Squeeze MSPR APAC- Flow MIT a

Some

10.7
Table Country Argentina Argentina Argentina Argentina