020-26 Wyo. Code R. § 26-2
(a) "Abandoned well" means a well regulated under this part for which use has been discontinued for more than one year and the owner does not desire to maintain this well for future use; or its use has been permanently discontinued or is in such a state of disrepair that it cannot be used for its intended purpose.
(b) "Annular space" means the space between the well casing and the wall of the drilled hole or between two well casings.
(c) "Artificial recharge well" means well constructed to introduce water into the ground as a means of replenishing groundwater basins.
(d) "Commercial, municipal and industrial waste well" means well constructed to dispose of unusable waste or contaminated water resulting from a commercial activity, municipal collection, storage or treatment facility or an industrial activity.
(e) "Conductor casing" means a tubular retaining structure installed in the upper portion of a well between the wall of the drilled hole and the inner well casing.
(f) "Confining formation" means an impermeable bed or a bed of distinctly lower permeability than the adjacent material in which groundwater may be moving.
(g) "Destroyed well" means a well that has been properly filled so that it cannot produce water nor act as a vertical conduit for the movement of groundwater.
(h) "Geothermal well" means a well constructed to extract or return water to the ground after it has been used for heating or cooling purposes.
(i) "Key seating" means a stuck drill pipe or casing caused by an abrupt change in direction or dogleg in the drilled hole.
(j) "Miscellaneous discharge well" means a well constructed for a special process discharge of limited time and scope.
(k) "Observation and monitor well" means a well constructed for the purpose of observing or monitoring groundwater conditions.
(l) "Production casing" means a tubular retaining structure installed in the upper portion of a well between the wall of the drilled hole and the inner well casing.
(m) "Sounding tube" means the access to the well casing that allows the water level in the well to be periodically determined. All sounding tubes should have a screw cap.
(n) "Special process discharge well" means a well constructed for the use of a subsurface discharge for recovering a product or fluid at the surface. Special process discharges are defined in detail in Chapter 9, Wyoming Water Quality Rules and Regulations.
(o) "Test well" means a well constructed for obtaining information needed to design a well prior to its construction. Test wells are cased and could be converted to observation or monitoring wells.
(p) "Watertight" means impermeable to water except when under such pressure that structural discontinuity is produced.
020-26 Wyo. Code R. § 26-2
Amended, Eff. 6/29/2018.