Use a electric-energy-interface can avoid us from generating fluids forever. Here's my patch:

data:extend({
{
type = "electric-energy-interface",
name = "or_power",
localised_name = {"entity-name.oil_rig"},
icon = "cargo-ships/graphics/icons/oil_rig.png",
icon_size = 96,
flags = {"placeable-neutral", "player-creation"},
minable = {hardness = 0.2, mining_time = 0.5, result = nil, minable = false},
max_health = 500,
corpse = nil,
collision_box = nil,
selection_box = nil,
collision_mask= {},
enable_gui = false,
allow_copy_paste = false,
energy_source = {
type = "electric",
buffer_capacity = "10GJ", --attempt to fix no power icon
usage_priority = "primary-output",
input_flow_limit = "0kW",
output_flow_limit = "1000kW",
},
energy_production = "10GW", --attempt to fix no power icon
energy_usage = "0kW",
picture = {
filename = "cargo-ships/graphics/blank.png",
priority = "extra-high",
width = 1,
height = 1,
},
working_sound = data.raw["generator"]["steam-engine"].working_sound
}
})

As a result relate events are no longer needed.

Hey jessefjxm! that is a lot cleaner way to do this! thanks a lot for your work! i just created a github repro for the project. so feel free to create a pull-request for those changes (or others if you're interested in continuing to support the development of this mod)
EDIT: I did not include this change in the recent update since i rely on the generator entity to produce the smoke visualizations.

Well, that's an issue... Maybe we can add smoke effect on oil rig ifself or some where else. I'll have some attempt on it.

i actually tried to add it to the oil rig itself, but as far as i understand, smoke (and any other property) can only be produced by entities that originally had this property in the base game.