Download Aquifer Characterization Techniques: Schlumberger Methods in by Robert G. Maliva PDF

By Robert G. Maliva

This publication provides an outline of thoughts which are on hand to symbolize sedimentary aquifers. Groundwater circulation and solute shipping are strongly stricken by aquifer heterogeneity. greater aquifer characterization can enable for a greater conceptual knowing of aquifer structures, which can result in extra actual groundwater types and winning water administration strategies, equivalent to contaminant remediation and controlled aquifer recharge platforms. This ebook has an utilized standpoint in that it considers the practicality of concepts for genuine groundwater administration and improvement tasks by way of expenses, technical assets and services required, and research time. A dialogue of the geological factors, forms, and scales of aquifer heterogeneity is first supplied. Aquifer characterization equipment are then mentioned, by way of chapters on info upscaling, groundwater modelling, and geostatistics. This e-book is a needs to for each practitioner, graduate pupil, or researcher facing aquifer characterization .

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Extra resources for Aquifer Characterization Techniques: Schlumberger Methods in Water Resources Evaluation Series No. 4

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As the scale of investigation increases, lateral heterogeneity becomes more important. In general, data on layered heterogeneity is more 16 Fig. 3 Conceptual diagram of layered and lateral heterogeneity. Lateral heterogeneity may be due to discontinuities of sediment bodies or more gradual changes in properties with an aquifer layer. The data requirements to characterize lateral heterogeneity are much greater than that needed for layered heterogeneity 1 Aquifer Characterization and Properties Layered heterogeneity Medium K High K Low K Lateral heterogeneity practicably obtainable, as it can be acquired from a single vertical well or borehole.

Stratal architecture may be investigated using geologic facies analysis and sequence stratigraphy. The evaluation of the type and scale of aquifer heterogeneity serves as a prelude to the field testing program by determining the data requirements for a project. The petrophysical and hydraulic evaluation includes the actual field data collection, which is the primary focus of this book. A wide variety of tools are available that provide data on different scales. Professionals involved in projects need to choose the tools that can most effectively provide the required quantity and quality of data.

Sediments composed of soft, clay-rich rock fragments may quickly lose nearly all of their effective porosity upon burial through mechanical compaction. Clean quartz sands, on the contrary, are much more resistant to mechanical compaction and usually lose porosity primarily through cementation. 5 Dispersivity Hydrodynamic dispersion is the process by which solute ‘particles’ are spread out parallel and transverse to the direction of average fluid flow (Freeze and Cherry 1979). It includes two processes, molecular diffusion and mechanical dispersion.

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