groundwater well Articles

  • Comparative economic analysis - Vertebrae Horizontal nested well system versus vertical extraction wells

    1 | INTRODUCTION This report summarizes the process and results obtained from an economic analysis comparing the installation cost of the VertebraeTM horizontal nested well system to a vertical well groundwater pump and treat system such as might be installed at a gas station, terminal, or small manufacturing plant. The purpose of the analysis is to help decision makers gain an ...


    By EN Rx, Inc.

  • New perspectives in the use of horizontal wells for assessment and remediation

    Abstract Remediation technologies can sometimes be established, but are not prevalent, for a variety of reasons; however, they can be subject to the forces of change. In some cases, creative economics promotes newuses, but also process improvements can drive newapplications and levels of acceptance. This is what is happening with the deployment of horizontal wells for site assessment ...


    By EN Rx, Inc.

  • How Grounded AI Could Save $1 Billion in the Permian Water Sector

    The oil and gas industry’s recent and explosive success in the Permian Basin has been a boon to production and profitability for producers as well as to American energy independence overall. Production in western Texas and southern New Mexico is expected to double its current production rate to about 8 MMbbl/d in four years. For perspective, that estimate surpasses the U.S.’s total ...


    By Hart Energy

  • Wastewater infrastructure through the ages

    Water and waste water management infrastructure has evolved hand-in-hand with human civilization for thousands of years. What is astonishing is how incredibly important this technology still is in present day, and most people aren't even aware of it's presence or function! You would think that, by now, cities would have this thing pretty much covered, but the billions of dollars spent every year ...


    By Hamilton Kent

  • Regional modeling of wells

    The ability to represent wells in a regional three-dimensional numerical groundwater model is crucial for many modeling exercises. Such wells can either be measurement wells where groundwater levels are measured as a function of time, or wells can be pumping wells in which water is removed from the well and a drawdown cone is created in the water table surrounding the well. There are numerical ...


    By SoilVision Systems Ltd.

  • Horizontal Well Rehabilitation at NASA Facility

    A horizontal groundwater extraction well at an active NASA facility in Louisiana was impacted by mineral scaling and bio-fouling affecting operations of the groundwater pump and the treatment system. A flow reduction of over 50% was observed. Directional Technologies, Inc. performed a series of horizontal well rehabilitation activities, that increases flow by 58%, which including mechanical ...

  • The first monitoring well in Engbertsdijksvenen is a reality

    On Wednesday 20 December 2017, the first monitoring well of the groundwater monitoring network Engbertsdijksvenen was realised on the parcel of landowner Wilharms in Vriezenveen. This monitoring well serves to monitor the effects of the measures required for the Nature Objectives of the Engbertsdijksveen. One of these goals is the recovery of living high moor. In addition to this monitoring well, ...


    By Eijkelkamp Soil & Water

  • Horizontal Wells - Technology Overview

    Horizontal well technology has been incorporated into many current environmental remediation applications (and associated contaminants), such as in situ bioremediation, air sparging, vacuum extraction, soil flushing, free product recovery, etc. Ac cording to information reviewed, this technology is most applicable to sites with relatively shallow soil and/or groundwater contamination, and can ...

  • Extraction well design for DNAPL recovery.

    The potential for downward migration of dense nonaqueous phase liquid (DNAPL) into deeper portions of a saturated hydrogeologic unit has important implications for successful groundwater remediation. Little information has been published regarding the design of extraction wells that allow DNAPL recovery without simultaneously creating a conduit for cross contamination by vertical migration ...


    By Hargis + Associates Inc

  • How to Remediate under an Intersection with Horizontal Wells

    Roadway intersections within urban settings are arguably some of the most challenging areas for subsurface remediation. Many consultants tasked with remediation of challenging sites such as these become frustrated by the inability of a vertical remediation system to influence the area of concern and/or they are anxious that they will not efficiently bring their clients’ sites to ...

  • Tidal influences on unconfined water levels in wells.

    Tidal effects have the potential to measurably affect water level measurements and the estimation of groundwater flow direction and gradient. This has significant implications for the prediction and monitoring of contaminant plumes in coastal areas. Studies were conducted at two near-coastal sites in San Diego County, California, to evaluate the impact of tidal variability on the interpretation ...


    By Hargis + Associates Inc

  • Optimal groundwater contamination monitoring using pumping wells

    This study presents a new method for selecting monitoring wells for optimal evaluation of groundwater quality. The basic approach of this work is motivated by difficulties in interpolating groundwater quality from information collected for only few sampled wells. The well selection relies on other existing data relevant to contaminant distribution in the sampling domain, e.g. predictions of ...


    By IWA Publishing

  • Use of Eight Well Purging and Sampling Record

    This article describes a groundwater well purging and sampling form that can be downloaded at our website. A click on the articles button will take you to a list of Monitoring Tips and Procedures articles, one of which is the sampling form. The form can be used to record  indicator parameters pH, conductivity, temperature, etc., taken during ...


    By RotaPump, Inc

  • Singleton well site

    Client: P.R. Singleton Limited Date: 2008 – 2009 Value: £20,000 CL Voelcker was appointed by P.R.Singleton Limited to assist with the variation of permit conditions for their on-shore oil well site in West Sussex. The site is an existing oil well site for which additional capacity is required. The initial ...

  • Rationalising water management policies: tube well development and resource use sustainability in Balochistan region of Pakistan

    The groundwater driven agricultural production is increasingly under threat due to rapidly depleting groundwater table in upland Balochistan region of Pakistan. Both government and water users can be blamed for the foreseen disaster. The government’s policy for groundwater development following over estimation of groundwater reserves and the water user’s inefficient usage are the main reasons ...


    By Inderscience Publishers

  • A method for reducing purge volumes in deep monitoring wells: a purging experiment.

    Regulatory agencies often require three well casing volumes or more be purged prior to collection of groundwater samples for chemical analysis. Costs are high for testing and disposing of potentially hazardous purge water; therefore, efforts must be made to minimize waste-water volume while obtaining representative groundwater samples. Lockheed sponsored a purge experiment on two deep monitor ...


    By Hargis + Associates Inc

  • Time-Tested Advantages of Horizontal Wells

    Wells are wells are wells, right? Both conventional vertical wells and directionally drilled horizontal wells have a screened casing that is connected to solid riser casing which leads to the ground surface. Groundwater or soil vapor is drawn through a well screen to remove contaminants. Remediation agents such as air, bioamendmnents or potassium permanganate are injected through a well screen to ...

  • Quality assessment of deep-well recharge applications in the Netherlands

    Artificial recharge of aquifers can be performed for various purposes and under varying hydrogeological conditions. We present an overview of deep-well recharge applications which have taken place in the Netherlands over the last two decades. We present the purpose of each application, the issues which had to be resolved, the preventive measures which were taken to improve performance and the ...


    By IWA Publishing

  • Plume distortion and apparent attenuation due to concentration averaging in monitoring wells

    This paper, authored by University of Connecticut researchers who performed much of the early work on this topic, describe the various processes that bias groundwater samples collected from conventional monitoring wells. In particular, they discuss the dilution of contaminants that occurs when clean water is simultaneously drawn into monitoring wells pumped to produce groundwater ...


    By Solinst Canada Ltd.

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