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Longer wells

Lining wells with a flexible metal casing helps a well to stretch further.

Underbalanced drilling

Drilling with lower pressure can help prevent damage to oil reservoirs and increase production.

A well production line

Smaller, mobile rigs for each stage of drilling a well, along with automated tasks, could help speed up the drilling process and bring down costs.

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23 Nov 2010 - Engineers have found a way to make even the longest, most powerful drills turn smoothly as they unlock new energy resources.