RE: Water production25 Aug 2021 11:24
All oil fields produce water, an oil field that doesn't is basically a direct connection to the nearest refinery holding tanks and not a subsurface resevoir.
Condensers and seperators are almost always seen on oil sites as these (as the name suggests) remove water from Oil.
It's like a drink in a straw, all oil reservoirs have some water, under natural conditions, oil and water seperate from each other. If the straw disturbs the drink or some other pressure event does then the too liquids mix.
You can't have Oil without water, but you can limit the amount of water you withdraw from the well (or often just re-inject the water to keep the flow pressure up in the resevoir)
We are getting into concepts here that would require a degree or 10 years expereince in petroleum geophysics, but it is hard to describe more succinctly without formulas and diagrams and 3d models