Used for a number of different reasons, cementing protects and seals the wellbore. Most commonly, cementing is used to permanently shut off water penetration into the well. Part of the completion ...

Finding and plugging them with cement can be costly ... one ex-oil executive and his team as he hunts down and plugs forgotten oil wells. More from Retail Nine million Americans live near an ...

Idle wells have not produced oil in at least two years ... say idle wells should be permanently closed and sealed with a cement plug deep underground. Estimates show it can cost more than $ ...

Regulations require oil and gas operators to plug wells with cement when they are finished with them, but a growing number of decades-old plugs are failing to hold up against new pressures ...

He confirmed that mud had been placed into the hole as well as cement, at a depth of 102m (335ft). A "plug of 15m of oil and gas cement has been placed in there, that has been set and has cured ...