| rock type |
X1
|
rocks etched by different acids |
| acid type |
X2
|
acid systems used to etch rocks |
| rock surface |
X3
|
initial rock surface before acid etching |
| etching pattern |
X4
|
manner of rock surface behavior after acid etching |
| temperature |
X5
|
temperature of etching acid in F |
| injection rate |
X6
|
rate of pumping acid through API conductivity cell
in liters
per minute |
| injection time |
X7
|
time for pumping acid through
API conductivity cell in minutes |
| acid concentration |
X8
|
concentration
of etching acid pumped through API conductivity
cell as a percentage |
| stress |
X9
|
applied stress by loading
frame in psi |
| conductivity |
Y |
resultant rock conductivity under stress
in mD-ft |
