Changes

Compressibility Sandstone:

Compressibility Sandstone:

[[File:Formula sandstones.png|200px|thumbnail|center]]

: <math>C_f = \frac{97.32(10^{-6})}{(1 + 55.8721 \phi)^{1.42859}}</math>

 

Compressibility Carbonate:

Compressibility Carbonate:

[[File:Formula carbonate.png|250px|thumbnail|center]]

: <math>C_f = \frac{0.853531}{(1 + 2.47664 \times \phi)^{0.92990}}</math>

For hydrocarbon reservoir compressibility can be express by:

For hydrocarbon reservoir compressibility can be express by:

<math>\text{C}_\text{t} = \text{S}_\text{o} \text{C}_\text{o} + \text{S}_\text{g} \text{C}_\text{g} + \text{S}_\text{w} \text{C}_\text{w} + \text{C}_\text{f}</math>

:<math>\text{C}_\text{t} = \text{S}_\text{o} \text{C}_\text{o} + \text{S}_\text{g} \text{C}_\text{g} + \text{S}_\text{w} \text{C}_\text{w} + \text{C}_\text{f}</math>

==Physical Properties of Gas==

==Physical Properties of Gas==