And then they send down a very high-speed injection of water into the well casing, and of course that flows into the rock and it puts little - tiny little hairline cracks in the rock, opens it up.

NPR: Drilling for Gas in Dallas-Fort Worth

The Chinguetti development will include six production wells, four water injection wells, and a gas injector well, attached to a permanently moored floating production, storage and offloading vessel situated in about 800 metres of water.

BBC: NEWS | Business | Woodside to pump Mauritania oil