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Step-by-step procedures are written to provide guidelines for executing the well in a safe and cost-efficient manner.

With the interplay with many of the elements in a well's design, trajectories and designs often go through several iterations before the plan is finalized.

Drilling

The well is created by drilling a hole 12 cm to 1 meter (5 in to 40 in) in diameter into the earth with a drilling rig that rotates a drill string with

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