Well screen definition

Well screen or "screen" means a manufactured intake structure with uniform openings designed to retain the aquifer formation, prevent collapse of the borehole adjacent to the screen, and accommodate a yield adequate for the intended use of the well.

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Well screen means a filtering device (e.g. manufactured perforated pipe) used as a sediment filter allowing entrance or exit of sub-surface fluids.

Well screen means a device, usually made of plastic or metal that is capable of preventing unconsolidated or poorly consoli- dated geologic material from entering the well. The size of the mate- rial which is prevented from entering the well is predetermined and controlled by the screen opening or slot size of the screen. A well screen may include a riser pipe.

Examples of Well screen in a sentence

These tables include:  Well name  UTM well coordinates  Well screen zone elevations  Well reference elevations  Well aquifer designation (e.g. UAZ, LAZ and GA)  Maximum concentration for each radionuclide for each well (2013-2015) An Attribute Table was associated with each radionuclide within each aquifer unit.
Table 3-4 Total Uncertainty Associated with Groundwater Plume Radionuclide Estimates Percent uncertainty FSB HSB Plume thickness 50 50 Aquifer porosity 13 13 Counting uncertainty 25 30 Well screen depth 50 50 Representative concentrations of plume zone 35 35 Radium background concentration 4 26 TOTAL UNCERTAINTY (radium 226/228) 79 85 TOTAL UNCERTAINTY (other contaminants) 79 81 It can be seen that the estimated total uncertainty is approximately ±80% for all radionuclides, and both basins.
Well screen shall be constructed of the same size and strength material as the well riser, unless specified otherwise in the Site Specific Section of the Scope of Services.

More Definitions of Well screen

Well screen means a filtering device attached to a well casing and designed to allow water into the well while keeping sediment out. (« filtre de puits »)

Well screen means the intake section of the well that obtains water from an aquifer and serves as a structural retainer to support the bore hole in unconsolidated materials.

Well screen means pipe or cylindrical tubing with slots of a uniform width, orientation, and spacing.

Well screen means a structural device which supports the well excavation, allows entrance of sub-surface fluids into a well or exit from a recharge well, and which acts as a filter to keep sediment from entering a well filtering device (e.g. manufactured perforated pipe) used as a sediment filter allowing entrance or exit of sub- surface fluids.

Well screen means perforated pipe or tubing, unsealed concrete tiles or other material installed in a well to filter out particulate matter and form the water intake zone. (“filtre de puits”) R.R.O. 1990, Reg. 903, s. 1; O. Reg. 128/03, s. 1; O. Reg. 372/07, s. 1 (1-8); O. Reg. 468/10, s. 1; O. Reg. 461/19, s. 1.

Well screen means a filtering device attached to a well casing and designed to allow water into the well while keeping sediment out, including continuous-slot, louvered and bridge-slot screens, well points and slotted or perforated pipe.

Well screen means a tubular, porous device attached at the end of a well casing and designed to allow water into the well and keep sediment out.