Noun
wellbore (plural wellbores)
The hole produced when drilling an oil or gas well.
A common secondary method is "waterflood" or injection of water into the reservoir to increase pressure and force the oil to the drilled shaft or "wellbore." Source: Internet
Hydraulic fracturing creates greater permeability and increases hydrocarbon flow to the wellbore. Source: Internet
Many gas-bearing formations also contain water, which will flow up the wellbore to the surface along with the gas, in both hydraulically fractured and non-hydraulically fractured wells. Source: Internet
In hydraulic fracturing, well operators force water mixed with a variety of chemicals through the wellbore casing into the rock. Source: Internet