Análisis de curvas de declinación
Paste a rate history and get an Arps fit — qi, Di and b — with the time to the economic limit, remaining reserves and an EUR.
Producción y levantamiento
Gradiente estático y presión de fondo
Bottom-hole pressure from a wellhead reading — a liquid gradient for oil and water, and a stepwise gas-column integration for gas.
Cargando el cálculo…
Este cálculo se ejecutó en tu navegador. Ningún valor que introdujiste se envió a ningún sitio, y nada se guardó.
Cómo se calcula
- Liquid: P_bh = P_wh + 0.4335·SG·TVD, with SG volume-weighted between oil and water.
- Gas: dp/dh = 0.018748·γg·p/(z·T) integrated over twenty depth steps, with z from Dranchuk–Abou-Kassem re-evaluated at each step's mean pressure and temperature.
- Sour gas gets the Wichert–Aziz correction to the pseudo-criticals before z is computed.
- Temperature is taken as a linear gradient between the surface and bottom-hole values you give.
Estándares que habla
Dónde deja de ser cierto
Both branches assume a single-phase, static column. A shut-in oil well with gas in the top of the tubing is neither, and the answer will be wrong by the height of the gas cap; a wet gas well with liquid holdup is wrong the other way. Where the number matters — a reservoir pressure for material balance, a datum correction for mapping — run a wireline gauge and use this only to check it.
La capacidad que automatiza esto
- PR-06Medición Virtual de FlujoEstimates each well’s oil, water and gas rate continuously from pressure and temperature, between the physical tests.
- PR-13Análisis Nodal AutomatizadoRuns the inflow-outflow calculation for every well in the field on a schedule, instead of for a few wells when someone has time.
Herramientas relacionadas
Curva IPR
One well test turned into an inflow performance curve, a productivity index and an absolute open flow.
Optimización de inyección de gas lift
Fit a gas-lift performance curve through your injection tests and find both the technical peak and the point where the next MSCF stops paying for itself.
Prueba de restauración — permeabilidad y daño
A Horner plot from your shut-in pressures, with the semilog slope turned into permeability, skin, p* and flow efficiency.