Page 373 - Fundamentals of Gas Shale Reservoirs

QUANTITATIVE INTERPRETATION OF IMBIBITION DATA 353
(a) (b)
0.16 0.16
Muskwa crushed sample Otter Park crushed sample
0.14 (horizontal) 0.14 (horizontal)
Imbibed mass/dry mass 0.08 Excess affinity to oil Imbibed mass/dry mass 0.08 Excess affinity to oil
0.12
0.12
0.1
0.1

0.06
0.06
0.04

0.02 Oil 0.04 Oil
Water
Water
0.02
0 0
0 10 20 30 40 50 0 10 20 30 40 50
Dimensionless time - t D Dimensionless time - t D
(c) (d)
0.16 0.16
Muskwa crushed sample Otter Park crushed sample
0.14 (vertical) 0.14 (vertical)
Imbibed mass/dry mass 0.08 Excess affinity to oil Imbibed mass/dry mass 0.08 Excess affinity to oil
0.12
0.12
0.1
0.1

0.06
0.06
0.04
0.02 Oil 0.04 Oil
Water
0.02
Water
0 0
0 10 20 30 40 50 0 10 20 30 40 50
Dimensionless time - t D Dimensionless time - t D
(e) (f)
0.02 0.02
Muskwa intact sample 0.015 Otter Park intact sample

Imbibed mass/dry mass 0.01 Excess affinity to oil Imbibed mass/dry mass 0.01 Excess affinity to oil
0.015

Oil
Oil
0.005
0.005
Water
Water
0 0
0 50 100 150 200 250 0 50 100 150 200 250
Dimensionless time - t D Dimensionless time - t D
FIGURE 16.11 The normalized mass versus dimensionless time for M crushed samples (a, c), M intact samples (e), OP crushed samples
(b, d), and OP intact samples (f). FS samples are not presented here due to the significant alteration of the samples during water imbibition
tests.