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Wellbore
A wellbore, drill hole or borehole is a hole drilled for the purpose of exploration or extraction of natural resources such as water, gas or oil where a well may be produced and a resource extracted for a protracted period. It is estimated that wellbore instability results in substantial economic losses of about US$8 billion per year worldwide. == See also ==
* Drilling rig * Hydrocarbon exploration * Wildcatter * Hubbert peak theory
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Wellbore」の詳細全文を読む
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