Water wells and boreholes [[electronic resource] /] / Bruce Misstear, David Banks, Lewis Clark

• Record Nr.: UNINA9910143744503321
• Autore: Misstear B. D. R
• Pubbl/distr/stampa: Chichester, England ; ; Hoboken, NJ, : John Wiley & Sons, c2006
• ISBN: 1-280-73962-2; 9786610739622; 0-470-03134-4; 1-61583-601-2; 0-470-03133-6
• Descrizione fisica: 1 online resource (516 p.)
• Altri autori (Persone): BanksDavid <1961->; ClarkLewis <1937-2004.>
• Disciplina: 628.114
• Soggetti: Wells; Electronic books.
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references (p. [471]-488) and index.
• Nota di contenuto: Water Wells and Boreholes; Contents; Preface; Lewis Clark (1937-2004): An Appreciation; Acknowledgements; 1 Introduction; 1.1 Wells and boreholes; 1.2 Groundwater occurrence; 1.2.1 Aquifers, aquicludes and aquitards; 1.2.2 Porosity and aquifer storage; 1.3 Groundwater flow; 1.3.1 Darcy's equation; 1.3.2 General equations of groundwater flow; 1.3.3 Radial flow to wells; 2 Groundwater investigations for locating well sites; 2.1 Desk studies; 2.2 Field reconnaissance; 2.3 Well survey; 2.4 Geophysical surveys; 2.4.1 Electrical resistivity; 2.4.2 Electromagnetics; 2.5 Drilling investigations; 2.6 Groundwater resources assessment2.6.1 Inflow estimation: direct recharge; 2.6.2 Inflow estimation: indirect recharge; 2.6.3 Aquifer response analysis; 2.6.4 Outflow estimation; 2.6.5 Catchment water balance and modelling; 2.7 Groundwater quality; 2.7.1 Introduction; 2.7.2 Chemical composition of groundwater; 2.7.3 Groundwater for potable supply; 2.7.4 Groundwater for irrigation; 2.8 Pollution risk assessment and prevention; 2.8.1 Groundwater vulnerability; 2.8.2 Wellhead protection areas; 2.8.3 Estimating the pollution risk for a new ; well site; 2.9 Planning the well scheme; 3 An introduction to well and borehole design3.1 Drilled wells; 3.1.1 General design principles; 3.1.2 Wells in crystalline aquifers; 3.1.3 Wells in consolidated aquifers; 3.1.4 Wells in unconsolidated aquifers; 3.1.5 Economic considerations in well design; 3.2 Hand-dug wells; 3.2.1 Design for yield; 3.2.2 Design for health; 3.3 Infiltration galleries; 3.4 Radial collector wells; 3.5 Observation boreholes; 3.6 Exploration boreholes; 3.7 Pump selection; 3.7.1 Vertical turbine pumps; 3.7.2 Electrical submersible pumps; 3.7.3 Motorized suction pumps; 3.7.4 Helical rotor pumps; 3.7.5 Hand pumps; 4 Specific issues in well and borehole design4.1 Choice of construction materials; 4.1.1 Strength; 4.1.2 Jointing system; 4.1.3 Durability; 4.1.4 Chemical inertness; 4.1.5 Standards; 4.2 Casing; 4.2.1 Steel casing; 4.2.2 Plastic and fibreglass casing; 4.3 Screen; 4.3.1 Slot design and open area; 4.3.2 Slot width; 4.4 Gravel pack design; 4.4.1 Natural gravel pack; 4.4.2 Artificial gravel pack; 4.5 Hydraulic design; 4.5.1 Partial penetration effects; 4.5.2 Gravel pack loss; 4.5.3 Screen entrance loss; 4.5.4 Well upflow losses; 4.6 Economic optimization of well design; 4.6.1 General principles; 4.6.2 Example5 Well and borehole construction; 5.1 Percussion drilling; 5.1.1 Drilling in hard-rock formations; 5.1.2 Drilling in soft, unstable formations; 5.1.3 Light-percussion drilling; 5.2 Rotary drilling; 5.2.1 Direct circulation rotary; 5.2.2 Fluids used in direct circulation rotary drilling; 5.2.3 Reverse circulation; 5.2.4 Top-hole and down-the-hole hammer drilling; 5.2.5 Borehole testing during drilling; 5.2.6 Methods of casing and screen installation; 5.3 Auger drilling; 5.4 Jetting; 5.5 Driving of well-points; 5.6 Manual construction; 5.7 Well development; 5.7.1 Well and aquifer damage
• Sommario/riassunto: Water Wells and Boreholes provides the necessary scientific background together with practical advice using global case studies, in an accessible easy to use style suitable for both postgraduates/researchers and practitioners. The book begins with an introduction to the type and uses of water wells from water supply and irrigation through to groundwater remediation. It then covers well siting detailing how to source data from geophysical surveys, remote sensing etc. Well design is then summarised to ensure the well is stable and cost-effective. The book ends with three chapters coveri