Virtual Flow Metering
Estimates each well’s oil, water and gas rate continuously from pressure and temperature, between the physical tests.
Decides how to split a limited supply of lift gas across the wells that want it, to maximise oil rather than gas injected.
Lift gas is allocated by habit and by whoever calls the control room. Wells past their optimum injection point consume gas that would produce more oil in a neighbouring well, and the loss is invisible because nobody computes the alternative.
Each well’s lift performance curve is estimated from test data and nodal analysis, then a constrained optimiser allocates the available compressor capacity across the network against total oil, respecting separator, compression and water-handling limits. Setpoints are advisory to the control room unless the operator opts into supervised closed loop.
Lift performance curves go stale as reservoir pressure and water cut change, and in most fields the test frequency is too low to keep them current. Without a survey campaign at the start, the optimiser is working from curves that may be two years old, and the honest expected gain is much smaller than the theoretical one.
Every capability page states a real limitation. If a vendor cannot tell you where their product stops, you are not being told the truth about where it starts.
Estimates each well’s oil, water and gas rate continuously from pressure and temperature, between the physical tests.
Runs the inflow-outflow calculation for every well in the field on a schedule, instead of for a few wells when someone has time.
Optimises the whole surface network together — chokes, routing and separator pressures — rather than one well at a time.