A wellbore is any 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 often used interchangeably with drill hole or borehole, though typically a "borehole" is referred to in ore mining, exploratory drilling, pilot holes for installing piers or underground utilities, or any other of a number of single use hole drilling. Wellbores, drilled using water, are part of the process of "fracking", or Hydraulic Fracturing, which has become a more common drilling method by oil and gas companies in the United States in the late 2000s.
See also 
- Drilling rig
- Hydrocarbon exploration
- Oil and gas law in the United States
- Hubbert peak theory
|This article related to natural gas, petroleum or the petroleum industry is a stub. You can help Wikipedia by expanding it.|