In directional drilling, cementing is used to plug an existing well, in order to run a directional well from that point. Also, cementing is used to plug a well to abandon it. Cementing is ...

Their primary functions are to serve as a landing spot for the cement plug during primary well cementing and to prevent fluid flow-back during well cementing and case running operations. Float collars ...

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