# Drilling fluid - Stage 4 (technology)

internal name `drilling-fluid-mk04` · tier 9 (Utility science pack, [tier 9](https://factorio.kalzumeus.com/tier/9.md))
HTML page: https://factorio.kalzumeus.com/tech/drilling-fluid-mk04/

## Cost

3300 units of (1 × [Utility science pack](https://factorio.kalzumeus.com/item/utility-science-pack.md), 2 × [pY science pack 4](https://factorio.kalzumeus.com/item/py-science-pack-4.md), 3 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 6 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 10 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 20 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 30 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 60 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 100 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 20 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 600 s each.

## Requires (2)

- [Drilling fluid - Stage 3](https://factorio.kalzumeus.com/tech/drilling-fluid-mk03.md)
- [Utility science pack](https://factorio.kalzumeus.com/tech/utility-science-pack.md)

## Leads to (1)

- [Excavation](https://factorio.kalzumeus.com/tech/excavation-3.md)

## Unlocks (4 recipes)

### Drilling fluid (type 4) (`drilling-fluid-3`)

- 4 s · tier 9
- Ingredients: 500 × [Water](https://factorio.kalzumeus.com/fluid/water.md), 50 × [Ethylene glycol](https://factorio.kalzumeus.com/fluid/ethylene-glycol.md), 100 × [Boric acid](https://factorio.kalzumeus.com/fluid/boric-acid.md), 1 × [Guar gum](https://factorio.kalzumeus.com/item/guar-gum.md), 3 × [Chromium](https://factorio.kalzumeus.com/item/chromium.md), 20 × [Salt](https://factorio.kalzumeus.com/item/salt.md), 4 × [Starch](https://factorio.kalzumeus.com/item/starch.md), 2 × [Collagen](https://factorio.kalzumeus.com/item/collagen.md)
- Results: 300 × [Drilling fluid (type 4)](https://factorio.kalzumeus.com/fluid/drilling-fluid-3.md)
- Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04
- Unlocked by: [Drilling fluid - Stage 4](https://factorio.kalzumeus.com/tech/drilling-fluid-mk04.md)

### Raw gas (`natural-gas-04`)

- 8 s · tier 9
- Ingredients: 2 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 2 × [Drill head](https://factorio.kalzumeus.com/item/drill-head.md), 50 × [Drilling fluid (type 4)](https://factorio.kalzumeus.com/fluid/drilling-fluid-3.md)
- Results: 1600 × [Raw gas](https://factorio.kalzumeus.com/fluid/raw-gas.md)
- Made in: Pumpjack MK 01, Pumpjack MK 02, Pumpjack MK 03, Pumpjack MK 04
- Unlocked by: [Drilling fluid - Stage 4](https://factorio.kalzumeus.com/tech/drilling-fluid-mk04.md)

### Crude oil (`oil-04`)

- 8 s · tier 9
- Ingredients: 2 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 1 × [Drill head](https://factorio.kalzumeus.com/item/drill-head.md), 50 × [Drilling fluid (type 4)](https://factorio.kalzumeus.com/fluid/drilling-fluid-3.md)
- Results: 1600 × [Crude oil](https://factorio.kalzumeus.com/fluid/crude-oil.md)
- Made in: Pumpjack MK 01, Pumpjack MK 02, Pumpjack MK 03, Pumpjack MK 04
- Unlocked by: [Drilling fluid - Stage 4](https://factorio.kalzumeus.com/tech/drilling-fluid-mk04.md)

### Tar (`tar-04`)

- 8 s · tier 9
- Ingredients: 2 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 1 × [Drill head](https://factorio.kalzumeus.com/item/drill-head.md), 50 × [Drilling fluid (type 4)](https://factorio.kalzumeus.com/fluid/drilling-fluid-3.md)
- Results: 1000 × [Tar](https://factorio.kalzumeus.com/fluid/tar.md)
- Made in: Pumpjack MK 01, Pumpjack MK 02, Pumpjack MK 03, Pumpjack MK 04
- Unlocked by: [Drilling fluid - Stage 4](https://factorio.kalzumeus.com/tech/drilling-fluid-mk04.md)