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- Title
Gaining and losing sections of horizontal wells.
- Authors
Steward, David R.; Jin, Wei
- Abstract
The flux along a horizontal well in uniform flow is examined using an analytic three-dimensional, steady model. Wells with uniform head and low pumping rates have gaining sections along which water enters the well and losing sections along which water exits. Such a well may provide a conduit for contaminated groundwater to be drawn into the well, conveyed a large distance, and injected into an uncontaminated region of an aquifer. Dimensionless ratios of the well's length L and radius R, aquifer thickness H, and uniform flow rate U are developed to quantify the minimum pumping rate Qmin at which no losing section occurs. The ratio Qmin/( ULH) is presented as a nomograph using R/ H and L/ H for placement parallel to flow and is 6π R/ H for placement perpendicular to flow, and a parabolic relationship between these limiting cases is developed for placement oblique to flow. Capture zone geometry is quantified using Qmin/( ULH).
- Publication
Water Resources Research, 2001, Vol 37, Issue 11, p2677
- ISSN
0043-1397
- Publication type
Article
- DOI
10.1029/2001WR000371