Oil well and hydraulic press: what they have in common

1. Step 1. Oil well — uses — Drilling rig. A well is drilled by a rig.
2. Step 2. Drilling rig — is used in — Hydraulic fracturing. Drilling.
3. Step 3. Hydraulic fracturing — uses — Hydraulics (Pascal’s law). Fluid pressure.
4. Step 4. Hydraulics (Pascal’s law) — is used in — Hydraulic press. Pascal’s law multiplies the force.

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