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The key objective is to measure formation pressure and permeability at specified downhole locations.
It usually does not reach the fully developed radial flow to assess the reservoir thickness.
| Gas-Oil Gradient Change | Pick OGC |
| Water-Oil Gradient Change | Pick FWL |
| The pressure of some HC beddings stay at initial pressure while most others deplete | Means that these beddings are not depleted and should be connected to production |
| The pressure of some HC beddings is much lower than most others | Means that these layers deplete faster |
| The pressure of some HC beddings is much higher than most others | Means that these beddings are getting a better pressure support from aquifer or gas cap or water injection |
| The pressure in overlying/underlying water reservoir is regular | Means that most probably the area around the new well did not face the thief production/injection |
| The pressure in overlying/underlying water reservoir is lower than that of oil/gas pay | Means that most probably the area around the new well was subject to thief production |
| The pressure in overlying/underlying water reservoir is higher than that of oil/gas pay | Means that most probably the area around the new well was subject to thief injection |
See Also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing / Subsurface Well Testing / Open-Hole Well Test
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