TL;DRAdvanced building that increases oil output of surrounding oil fields in cost of other resources, power and additional logistics. Instead of current oil guaranteed output.
What ?Remove default guaranteed minimum for pumpjacks, make oil fields to dry up to 0 yield with 0 oil output (but not disappear).
Introduce new building : Hydraulic Fracture, with corresponding high-tech research as combination of advanced oil processing and mining.
Hydraulic Fracture is a large building (5x5) that grants additional 20% yield to nearby oil fields (25x25 area). This bonus does not get exhausted and is active as long as Hydraulic Fracture operates.
In order to operate Hydraulic Fracture consumes special Fracturing Fluid like a fuel.
Possible components of the Fracturing Fluid are water, concrete, acid, lubricant.
Hydraulic Fracture operates whenever it has fluid supply, regardless of oil extraction.
Speed multiplier applies to yield bonus and rate of fluid consumption.
Productivity multiplier applies to yield bonus only (multiplicative with speed).
Hydraulic Fracture upgrades can be repeatable techs.
Each oil field receives either only the highest provided yield bonus, or the summ.
Hydraulic Fracture may not support modules. (to prevent speed beacon double-dipping)