Drainage Geometry

The third main application of horizontal wells is to reduce the effects of coning and cusping by changing the geometry of drainage c ose to the well. For example, a horizontal... 

Figure 2.19 Change of groundwater pressure with depth in different parts of a flow system of a hypothetical homogeneous drainage basin with simple ground surface geometry (modified after T6th, 1980. Reprinted by permission of the American Association of Petroleum Geologists).

Figure 2.20 Cross-section showing the theoretical distribution of hydraulic head and gravity-induced groundwater flow pattern in a homogeneous and isotropic drainage basin with complex ground surface geometry (modified after T6th, 1970. Reprinted by permission of the National Research Council of Canada).

Figure 2.21 Lateral groundwater flow patterns for isotropic drainage basins with simple ground surface geometry (ground surface geometry types patterned after basin geometry types given by Pratsch, 1982).

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