A well drilled in close proximity to a producing well, which helps determine the limits of an oil or gas reservoir.
Any well drilled in the course of extraction of geothermal fluids from the resevoir.
A well drilled in an area indicated to be productive by the presence of a successful, previously drilled exploratory well. Development wells are relatively low risk.
A well drilled to enable production from a known oil or gas reservoir.
A well drilled into a proved natural gas or oil reservoir to the depth of a stratigraphic horizon known to be productive.
A well drilled with the intent of producing oil or gas from a proven field.
Well drilled for oil and gas within a proven field or area for the purpose of completing the desired pattern of production.
Any well drilled in the course of extraction of reservoir hydrocarbons.
A well drilled within the area of an oil or gas reservoir known to be productive. Development wells are relatively low risk.
a well drilled specifically into a previously discovered field for the purpose of producing oil or gas.
A well drilled with the expectation of producing oil or gas from a known formation. Development wells are located in accordance with spacing regulations and filed development requirements.
A well drilled in an area in a field to complete a pattern of production. An exploitation well.
A well drilled within the proved area of an oil reservoir to the depth of a stratigraphic horizon known to be productive.