Page 57 - Fundamentals of Enhanced Oil and Gas Recovery

(ft) 4040 15,900 1500 13,365 10,000 18,500 2723 3900 400 11,300
Depth 8344 6230 14,633 700 9460 4222 2985 625 5300 3406 200 9000 1647 , 5000 1700 5570

Formation Type Sandstone/ carbonate Sandstone/ carbonate Sandstone/ carbonate Sandstone Sandstone Sandstone Sandstone Sandstone/ carbonate (preferably carbonate)

Properties Net Thickness (ft) unless Thin dipping Wide range unless Thin dipping NC NC NC . 20 . 20 79 . 10

Reservoir Oil Saturation PV) (% 30 98 71 15 89 46 0.76 0.8 0.78 34 82 64 68 74.8 73.7 43.5 53 49 35 90 66 . 40 50 94 67

Permeability (mD) 0.1 5000 726 1.5 4500 210 0.2 35 15 1.8 5500 834 596 1520 50 60 56.67 1 15,001 2670 . 50 1736 10 15,000 1982

Porosity (%) 4 45 14.5 3 37 15 7.5 14 11 10.4 33 22.5 26 32 26.6 14 16.8 15.6 12 65 32 . 18 32 14 35 23

Temperature ( F) 85 329 202 85 257 138 190 325 267 74 237.2 167 118 158 121.6 122 155 126.3 10 350 106 64 230 176

C 2 C 7 asphaltic
Composition % % C 5 C 12 components

[6,8 15] Properties High High NC NC NC NC NC NC Some SF , steam flooding; CSS, cyclic steam stimulation; ISC, in situ combustion.

Methods Oil Viscosity (cp) 0.04 18,000 286 0 35 2 0 0.2 0.07 0.4 4000 123 11 6500 875.8 2.6 15.6 7 3 5000,000 32,595 50 350,000 5247 1.5 2770 505

EOR
for Gravity ( API) 23 57 38 22 45 37 38 54 48 13 42.5 26.5 23 34 32.6 22 39 31.8 8 33 14.6 8 35 14.4 10 38 24
Criteria Range Average Range Average Range Average Range Average Range Average Range Average Range Average Range Average Range Average

Screening Methods Methods ASP , alkaline surfactant polymer;

2.1 Methods Surfactant 1 polymer/ alkaline
Table Gas HC CO 2 N 2 Chemical Polymer ASP Thermal SF CSS ISC