Aquifer Test Solutions

This book, designed as a handbook, provides a systematic treatment of analytical solutions describing groundwater flow during aquifer tests. The book integrates the majority of known solutions from well hydraulics and subsurface flow theory, starting with pioneering work from the early 20th century up to the most recent publications in scientific journals. The book includes about 300 transient solutions covering a wide range of aquifer test scenarios and hydrogeological conditions. All the solutions have been thoroughly tested and implemented in the multifunctional ANSDIMAT software. The book comprises three parts and is supplemented by appendices.

The first part of the book is dedicated to basic analytical relationships referring to pumping tests with constant discharge rate. Conceptual models describe confined, unconfined, confined–unconfined, inhomogeneous, and fracture-porous aquifers, as well as leaky aquifers and multi-layer aquifer systems. Complicating factors such asflow boundaries, aquifer anisotropy, non-uniform aquifer thickness, partial well penetration, wellbore storage and skin, the effect of capillary forces are also considered.

The second part focuses on complex pumping test settings and well system configurations. Analytical solutions are presented for pumping from a horizontal or inclined well, constant-head tests, multi-well variable-discharge tests, simultaneous pumping from adjacent aquifers and dipole flow tests. Detailed descriptions are given for slug and recovery tests.

The third part of the book contains algorithms for evaluating hydraulic characteristics using analytical and graphical methods, and is supplemented by the ANSDIMAT tool. This software includes solutions for some practical engineering-hydrogeological problems, in particular, the assessment of aquifer characteristics by data on groundwater level monitoring and the evaluation of water inflow into open pits.

The book is supplemented with appendices in which hydrogeologists can find a vast body of useful information including mathematical descriptions of the majority of analytical functions used in the book, their plots and possible approximations.

Audience:

The book is useful for hydrogeologists (students, engineers and researchers) engaged in groundwater flow studies, aquifer test analysis, environmental geologists and civil engineers. Experts in water flow numerical modeling and programmers developing software for aquifer tests will find valuable information in this book, which can also be used for educational and research purposes.

“Presents a most comprehensive collection of aquifer test analysis methods and techniques ... . It comprises practically all analytical equations ever suggested to describe the aquifer response on water pumping.” (Prof. Dr. Sergey P. Pozdniakov, Moscow State University, Chief of the Department of Hydrogeology of the Faculty of Geology)

““Aquifer Test Solutions” is a handbook, in which the world experience of study and development of analytical solutions for aquifer test analysis and interpretation is summarized and encyclopedized ... . a powerful guide for hydrogeologists involved in field aquifer test analysis and interpretation by analytical and numerical methods.” (Dr. Vyacheslav G. Rumynin, Head of SPb Div. of the Inst. of Env. Geology of the Russian Academy of Sciences, The RAS corresponding member)

Leonid N. Sindalovskiy is Head of the Laboratory of Mathematical Modeling of Hydrogeological Processes at the Russian Academy of Sciences Institute of Environmental Geology. His research interests focus on mathematical modeling of flow and transport processes in geologic media. He has authored several books on pumping test data analysis and the use of ANSDIMAT software for aquifer flow estimation.