A Lesson From Production
| Analysis |
“The rapid depletion of the high permeability layer(s) |
| implies that the deliverability of the well will diminish |
| with time. Thus, contractual agreements made on |
| the basis of short duration tests will not be met.” |
“If the commingled layers consist of one high |
| permeability layer while all the others are low |
| permeability, then the test will only give the kh of the
| high permeability layer.” |
Time to reach pseudo-steady state can be diagnostic - |
| longer if there is no crossflow (from injection test). |