RE: Olderwiser How stupid can you be.9 Apr 2024 21:43
Taxi
When a well is produced, the pressure is dropped at the bottom of the well, to create flow. The pressure drop will reach the bubble point in the reservoir liquids, at which point gasses exsolve from the liquids.
Gasses by their nature will travel faster through the resistance of the reservoir rock, so are able to bypass/overtake the oil in place.
In this case dropping the pressure too low will create a disproportionate high gas flow . In a conservative flow mode, the pressure drop at the bottom of the well is managed, to minimize the gas released back in the reservoir pores.
Once oil has flowed into the well bore, gas will of course exsolve, as the pressure drops in the journey to the surface.
No harm done there, but within the reservoir it is going to create excessive gas flow, thus raising the GOR
From the 2000psi well top pressure reported, I believe an aggressive flow plan was implemented
Well management can assist in reducing the "producing" GOR, poor management will increase it, but the in situ reservoir original GOR is a fixed constant set by nature itself
The produced GOR is a simple calculation divide the gas produced by the oil produced over the same time period