a hole drilled in the earth for purpose of (1) finding or producing crude oil or natural gas; or (2) providing services related to the production of crude oil or natural gas.

Related Terms

• Service Well

a Well drilled or completed for the purpose of supporting production in an existing field....

• Open-hole Completion

a method of preparing a well for production in which no production casing or liner is set opposite the producing formation. Reservoir fluids flow unrestricted into the open wellbore. An open-hole completion has limited use in rather special situations. Also called a barefoot completion....

• Dissolved Gas

natural gas which is in solution with crude oil in the reservoir....

• Non-associated Gas

Natural gas which is in reservoirs that do not contain significant quantities of crude oil....

• Conductor Casing

generally, the first string of casing in a well. It may be lowered into a hole drilled into the formations near the surface and cemented in place; or it may be driven into the ground by a special pile drive (in such cases, it is sometimes called drive pipe); or it may be jetted into...