Difference between revisions of "Observed Net Pressure"
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<center><code>P<sub>net,obs</sub> = P<sub>measured</sub> + P<sub>hydrostatic</sub> - P<sub>friction</sub> - P<sub>closure</sub></code></center> | <center><code>P<sub>net,obs</sub> = P<sub>measured</sub> + P<sub>hydrostatic</sub> - P<sub>friction</sub> - P<sub>closure</sub></code></center> | ||
| − | The '''P<sub>friction</sub>''' term includes pressure drops due to wellbore, perforation and near-wellbore friction. When using ''Hydraulic Fracture Simulation'' to model a fracturing treatment it is important to remove as many unknowns as possible, therefore using a down-hole gauge or dead-string to measure the pressure close to the perforations will help to remove uncertainty in the calculation of the hydrostatic pressure and pressure drop | + | The <code>'''P<sub>friction</sub>'''</code> term includes pressure drops due to wellbore, perforation and near-wellbore friction. When using ''Hydraulic Fracture Simulation'' to model a fracturing treatment it is important to remove as many unknowns as possible, therefore using a down-hole gauge or dead-string to measure the pressure close to the perforations will help to remove uncertainty in the calculation of the hydrostatic pressure and pressure drop |
Latest revision as of 07:31, 19 June 2018
Observed Net Pressure
Hydraulic Fracture Simulation calculates the observed net pressure using the following equation:
Pnet,obs = Pmeasured + Phydrostatic - Pfriction - PclosureThe Pfriction term includes pressure drops due to wellbore, perforation and near-wellbore friction. When using Hydraulic Fracture Simulation to model a fracturing treatment it is important to remove as many unknowns as possible, therefore using a down-hole gauge or dead-string to measure the pressure close to the perforations will help to remove uncertainty in the calculation of the hydrostatic pressure and pressure drop
