Page 31 - Fundamentals of Enhanced Oil and Gas Recovery

Temperature (F) NC NC NC NC 200r80 . .200r140 100s135 . NC NC

(ft) .9000r3250 ,11,500r3500 ,4500r1500 overburden ratio sand
Depth .6000 .4000 .2500 .1800 ,9000 .3:1 to

Characteristics Average Permeability (md) NC NC NC NC .10s450s .10s800s a .50 b .200s2, 540s c NC

Reservoir and/or

Properties (ft) Thickness dipping unless dipping unless range dipping vertical permeability

Oil if good
Net Thin Thin Wide NC NC NC .10 .20 .10
Type or or or tar
Formation Sandstone carbonate Sandstone carbonate Sandstone carbonate NC Sandstone preferred Sandstone preferred High-porosity sand/ sandstone High-porosity sand/ sandstone Mineable sand

Saturation .40s75s .30s80s .20s55s .35s70s .35s53 .50s80s .50s72s .40s66s .8 wt% sand

Oil (%PV)

C 1 C 7 C 2 C 7 C 5 C 12 some alkaline for components

of of of intermediate, acid asphaltic
Characteristics Composition percent High percent High percent High NC Light, organic floods NC Some NC k NC

EOR Methods Reservoir (cp) Viscosity ,0.4r0.2r ,3r0.5r ,10r1.5r ,600 ,35s13s .10 ,150, k ,5000 1200 ,200,000 4700 cold Zero flow
for EOR Properties (Miscible)
Criteria for Criteria Oil (API) Gravity .35s48s .23s41s .22s36s .12 .20s35s .15 .10s16s? .8 13.5s? 7 11

Screening Screening Method Methods and gas Injection and flooding a . 3 md from some carbonate reservoir.

1.1 of EOR Injection Nitrogen flue Hydrocarbon CO 2 Immiscible gases Micellar/ ASP , alkaline Polymer flooding Thermal/Mechanical Fire Steam Surface mining NC, not critical. b Transmissibility .20 md-ft/cp. c Transmissibility .50 md-ft/cp.
Table Summary No. Gas 1 2 3 1 3 Chemical 4 5 6 7 8