well casing Articles

  • Horizontal Remediation Wells - Case Study

    Why wait 30 years…when HRWs are here today! After 30 years of remediation, the responsible party became frustrated with the limitations of vertical wells and the inability of methods used to achieve cleanup goals.  Seeking site closure, the soon to be client, turned to Directional Technologies and Horizontal Remediation Wells (HRWs) to break the stalemate.  The HRWs were ...

  • Treatment of pumping wells case study

    Results from an Australian Trial Problem The pumping wells had accumulated fat and grease on their walls. With time septic conditions had set in giving rise to strong malodours and the local residents had started to complain about the smell. In addition acids produced under septic conditions were damaging the structural integrity of the pipes and pumps and increasing ...


    By Cleveland Biotech Ltd.

  • Locate buried monitoring wells case study

    A Phase II Environmental Site Investigation was being conducted at a gasoline station in Fort Myers, Florida. In order to minimize costs, our client intended to use several existing on-site monitoring wells rather than installing new wells. However, five of the existing wells had been covered with asphalt and were no longer visible. GeoView was tasked with performing a shallow geophysical study ...


    By GeoView, Inc.

  • Locate abandoned production abandoned well case study

    Clearwater, Florida Historical records discovered during construction of a commerical building indicated that a deep well with steel casing was likely present within a portion of the project site. Regulatory officials halted construction and insisted that the presence (or absence) of the well be confirmed. If the well was present, it was required that the well be exposed so that it could ...


    By GeoView, Inc.

  • Mixing an 8X8 Foot Lift Station Wet Well - Case Study

    The GridBee AP500 defeats grease problem in less than a month. Topics: portable, no moving parts, 316L stainless steel construction, AU-200 System Overview: This Municipality has several lift stations of differing dimensions which experience fat, oil and grease (FOG) build up. They were looking for a solution that was easily portable for use in ...


    By Medora Corporation

  • Horizontal Soil Vapor Extraction and Horizontal Air Sparge Wells Case Study-

    Directional Technologies Is The Expert At Horizontal Soil Vapor Extraction   A horizontal soil vapor extraction well and two horizontal air sparge wells rapidly remediate contamination in situ under a research and development facility. These horizontal wells were installed by environmental directional driller Directional Technologies with no access to inside this sensitve facility. ...

  • Sino-Danish brain circulation: scholarship, capacity and policy

    China is faced with urgent needs to develop an economically and environmentally sustainable economy based on innovation and knowledge. Brain circulation and research and business investments from the outside are central for this development. Sino-American brain circulation and research and investment by overseas researchers and entrepreneurs are well described. In that case, the US is the centre ...


    By Inderscience Publishers

  • CETCO gas vapor barrier chosen by top home builder for site with former oil wells case study

    Project: Palisades at Vista del Verde Location: Yorba Linda, CA Products: Liquid Boot 500 Gas Vapor Mitigation System, GeoVent Gas Venting System Background: The Palisades at Vista del Verde is a multi-family housing development that is situated on a site that once was home to numerous oil wells. The oil wells have since been ...


    By CETCO

  • The influence of decoupling voltages on the performance of synchronous current controllers in induction motor drives

    The paper discusses the design of the current controllers for the induction motor (IM) drive where field oriented control is done in the rotor flux synchronous reference frame. The most common current control method is to use PI controllers alone – this is easy to implement and works well in most cases. A better scheme is to use decoupling compensation voltages in addition to the PIs, however, ...


    By Inderscience Publishers

  • Quilicura, Chile Well #3 - Case Study

    Quilicura is a municipality located in the Santiago Metropolitan Region in Chile. Well #3 has a flow of 1600 gallons per minute (100 liters per second). The well has a high concentration of arsenic that fluctuates between 0.040 mg/L and 0.060 mg/L, well above the World Health Organization's standard of 0.010 mg/L. In addition to the high arsenic concentration, the site has challenges with pH that ...

  • 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

  • Rumours interplay in disaster management

    Rumours affect how rational individuals assess risks, evaluate needs, and make decisions in disaster-affected environments. This paper presents a comprehensive understanding of the role of rumours in disaster management. First we present an objective definition of 'rumour' that is a compound definition including both a message with some degree of false content and a method of transporting the ...


    By Inderscience Publishers

  • Low-Flow Purging Reduces Management of Contaminated Groundwater

    Purging a monitoring well prior to sampling removes stagnant water in the well casing and ensures collection of groundwater samples representative of formation water. Traditionally, a number of well casing volumes are removed (from three to five) and water stabilization parameters are monitored during removal of the casing volumes. Temperature, pH and specific conductance are routinely monitored ...

  • A Pluvial Deposition Method to Reconstitute Well-Graded Sand Specimens

    Stationary pluviators generally use one or more sieves to spread the sand flow exiting from the hopper through one or more holes over the desired area. On the other hand, traveling pluviators do not need a sieve or mesh because in this case it is possible to move an opening or a nozzle over the area of interest. Traveling pluviators are preferable to stationary pluviators, especially in the case ...


    By ASTM International

  • A Potential Risk Assessment of a Dengue Outbreak in North Central Texas, USA: Abundance and Temporal Variation of Dengue Vectors

    In response to three imported dengue cases in north central Texas as well as increased case numbers in Texas and adjoining Mexican states in 2005, the authors assessed the potential risk of a dengue outbreak in north central Texas by investigating abundance and temporal variation of dengue vectors in 2006. Dengue vector abundance was monitored from 54 sites in Dallas County, Texas, from June to ...

  • Using phase-state modelling for inferring forecasting uncertainty in nonlinear stochastic decision schemes

    The paper introduces the use of phase-state modelling as a means of estimating expected benefits or losses when dealing with decision processes under uncertainty of future events. For this reason the phase-space approach to time series, which generally aims at forecasting the expected value of a future event, is here also used to assess the forecasting uncertainty. Under the assumption of local ...


    By IWA Publishing

  • Covariant treatment of collisions in particle physics

    The use of relativistic frame invariants is very well established, especially when it comes to the energy–momentum. In the current paper we show how the conservation of the energy and momentum applies to collisions of particles moving at relativistic speeds, like the ones encountered in nuclear accelerators. We derive the equations for two main types of collisions: elastic and inelastic. The ...


    By Inderscience Publishers

  • The contribution of tourism to well-being and welfare: the case of Hungary

    In the process of achieving well-being and welfare, tourism may act as a stimulus on many levels. Based on two national surveys conducted by the Hungarian Central Statistical Office in 2007, and by the Geographical Research Institute of the Hungarian Academy of Sciences in cooperation with the Kodolanyi Janos University of Applied Sciences, the paper explores the influence of tourism on the ...


    By Inderscience Publishers

  • Puregold Cleandrill - Biodegradable Drilling Fluid used in Horizontal Remediation Well - Case Study

    Project Details Bloomington Manufactured Gas Plant Horizontal Remediation Well Location Grand Rapids, MI Products Used Puregold Cleandrill Northern Illinois Gas entered into an agreement with the Illinois Environmental Protection Agency (IEPA) to construct a ...


    By CETCO

  • Sustainability-related innovation and competitiveness-enhancing regulation: a qualitative and quantitative analysis in the context of open innovation

    The purpose of this paper is to study empirically based on qualitative in-depth case studies as well as a quantitative survey the role of competitiveness-enhancing regulation and open innovation activities (especially the involvement of fringe stakeholder groups) for sustainability-related innovation and competitiveness. Using qualitative and quantitative content analysis as well as multivariate ...


    By Inderscience Publishers

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