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Samuel T Ariaratnam - One of the best experts on this subject based on the ideXlab platform.

  • Quality Assurance/Quality Control Measures in Horizontal Directional Drilling
    ICPTT 2009, 2009
    Co-Authors: Samuel T Ariaratnam
    Abstract:

    As public works agencies look to install new buried pipelines in an economical, environmentally-friendly, and minimally intrusive manner, the adoption of trenchless technologies such as Horizontal Directional Drilling (HDD) has increased. Today, HDD equipment is engaged in projects involving pipeline installations of utility networks such as water, wastewater, telecommunications, electrical, telephone, oil product, and natural gas. This increase in utilization of the technology has resulted in a greater potential for risk and damage to subsurface and surface features. Designers and owners are continually exploring methods to assure quality on HDD projects. This paper discusses quality assurance and quality control measures to mitigation installation- related issues including: 1) heaving of surface features; 2) damage to existing subsurface structures; 3) product pipe damage; and 4) surface settlement. Adherence to these recommendations will better increase the likelihood of a successful Horizontal Directional Drilling project.

  • quality assurance quality control measures in Horizontal Directional Drilling
    International Conference on Pipelines and Trenchless Technology 2009 ICPTT 2009: Advances and Experiences with Pipelines and Trenchless Technology for, 2009
    Co-Authors: Samuel T Ariaratnam
    Abstract:

    As public works agencies look to install new buried pipelines in an economical, environmentally-friendly, and minimally intrusive manner, the adoption of trenchless technologies such as Horizontal Directional Drilling (HDD) has increased. Today, HDD equipment is engaged in projects involving pipeline installations of utility networks such as water, wastewater, telecommunications, electrical, telephone, oil product, and natural gas. This increase in utilization of the technology has resulted in a greater potential for risk and damage to subsurface and surface features. Designers and owners are continually exploring methods to assure quality on HDD projects. This paper discusses quality assurance and quality control measures to mitigation installation- related issues including: 1) heaving of surface features; 2) damage to existing subsurface structures; 3) product pipe damage; and 4) surface settlement. Adherence to these recommendations will better increase the likelihood of a successful Horizontal Directional Drilling project.

  • Postconstruction Evaluation of Horizontal Directional Drilling Installations
    Practice Periodical on Structural Design and Construction, 2005
    Co-Authors: Samuel T Ariaratnam, Ivan J. Beljan
    Abstract:

    Recently, questions have arisen concerning the compactive nature of Drilling fluids within the annular space during Horizontal Directional Drilling (HDD) operations. To address these concerns, a field and laboratory study was conducted to provide both a qualitative and a quantitative assessment of the annular space. The study consisted of installing 61 m (200 ft) bore lengths of 100 mm (4 in.) , 200 mm (8 in.) , and 300 mm (12 in.) SDR 17 high density polyethylene pipe in two different soil mediums: clay and sand. Subsequently, the pipes were excavated with visual and strength measures of each of the installations taken at time periods of 1 day , 1 week , 2 weeks , 4 weeks , and 1 year after installation to assess the annular space region over time. Additionally, samples of the Drilling fluid were evaluated both in the field and at a laboratory. This paper presents the results of this research initiative and provides qualitative and quantitative information on borehole annular space integrity during HDD i...

  • reducing risks in unfavorable ground conditions during Horizontal Directional Drilling
    Practice Periodical on Structural Design and Construction, 2004
    Co-Authors: Samuel T Ariaratnam, Jason S Lueke, Ed Anderson
    Abstract:

    The presence of gravel and cobble during Horizontal Directional Drilling (HDD) operations is one of the most challenging situations encountered by contractors. An unexpected encounter with this soi...

  • suggested practices for installations using Horizontal Directional Drilling
    Practice Periodical on Structural Design and Construction, 2000
    Co-Authors: Samuel T Ariaratnam, Erez N. Allouche
    Abstract:

    In recent years, the utilization of Horizontal Directional Drilling (HDD) in urban areas for the installation of telecommunication, utilities, or municipal services has experienced a rapid growth. The hazards and complexity of working in urbanized areas, together with the ever increasing volume of construction activities, make the development of suggested practices much needed for engineers and inspectors whose primary responsibility is to oversee the project to a safe and successful completion. This paper presents suggested practices for underground installations of pipelines and conduits using HDD technology. Written feedback from numerous consulting engineers, contractors, owners, and research institutions in North America were solicited in the development of this paper. Contracting and construction aspects of HDD projects including design rules-of-thumb are incorporated to provide designers with the necessary tools for enhancing the probability of a successful HDD project. Topics include contract considerations, contractor bid submission, site evaluation, preconstruction, Drilling operations, Drilling fluid collection and disposal, site restoration, construction, and postconstruction evaluation. Additionally, provisions for measurement and payment are presented and discussed.

Neil Van Rooyen - One of the best experts on this subject based on the ideXlab platform.

Erez N. Allouche - One of the best experts on this subject based on the ideXlab platform.

  • suggested practices for installations using Horizontal Directional Drilling
    Practice Periodical on Structural Design and Construction, 2000
    Co-Authors: Samuel T Ariaratnam, Erez N. Allouche
    Abstract:

    In recent years, the utilization of Horizontal Directional Drilling (HDD) in urban areas for the installation of telecommunication, utilities, or municipal services has experienced a rapid growth. The hazards and complexity of working in urbanized areas, together with the ever increasing volume of construction activities, make the development of suggested practices much needed for engineers and inspectors whose primary responsibility is to oversee the project to a safe and successful completion. This paper presents suggested practices for underground installations of pipelines and conduits using HDD technology. Written feedback from numerous consulting engineers, contractors, owners, and research institutions in North America were solicited in the development of this paper. Contracting and construction aspects of HDD projects including design rules-of-thumb are incorporated to provide designers with the necessary tools for enhancing the probability of a successful HDD project. Topics include contract considerations, contractor bid submission, site evaluation, preconstruction, Drilling operations, Drilling fluid collection and disposal, site restoration, construction, and postconstruction evaluation. Additionally, provisions for measurement and payment are presented and discussed.

  • Remediation of Contaminated Sites Using Horizontal Directional Drilling
    Construction Congress VI, 2000
    Co-Authors: Samuel T Ariaratnam, Erez N. Allouche
    Abstract:

    In recent years, a growing number of consultants and owners have considered the use of Horizontal remediation wells as an alternative solution to the removal and containment of contaminants. Currently, engineers rely on complex systems of vertical wells or barrier wall systems which inject and/or extract subsurface water or vapor for on-site soil and ground water remediation. However, in sites containing fine-grained soil or wide spread contamination, numerous vertical wells are required to adequately treat the plume. Horizontal Directional Drilling makes it possible to install a single Horizontal well to contact a much larger contaminated area. Because fewer wells are required, the cost of extraction and treatment over the life of the project may be substantially reduced, In addition, Horizontal wells can be installed beneath buildings or environmentally sensitive areas, to reach contaminants inaccessible by other methods. Construction of such wells may be achieved using Horizontal Directional Drilling, a remotely guided Drilling technique that makes it possible to drill Horizontal boreholes over long distances along straight or curved profiles and alignments. An overview of Horizontal environmental well technology including discussion of the advantages and limitations of this technology is presented. Greater utilization of Horizontal wells depends on the availability of design and construction guidelines. Parameters and design principles that should be considered in such installations are presented.

  • Horizontal Directional Drilling profile of an emerging industry
    Journal of Construction Engineering and Management-asce, 2000
    Co-Authors: Erez N. Allouche, Samuel T Ariaratnam, Jason S Lueke
    Abstract:

    Perhaps the fastest growing segment in the underground trenchless construction industry is Horizontal Directional Drilling (HDD). Currently, in North America alone, there are 17 manufacturers of HDD rigs and accessories and thousands of Horizontal Drilling rigs that are owned and operated by several hundred dedicated HDD contractors as well as utility companies and large pipeline outfits. Applications of HDD span across the civil engineering spectrum from mineral and oil exploration to the installation of telecommunication cables. An industry survey was conducted to gain a better understanding of this multibillion dollar industry, which is relatively unfamiliar to many in the construction sector. This paper presents the results obtained from analyzing 49 survey responses from HDD contractors in the United States and Canada. Topics investigated include company profile (e.g., annual volume, areas of activities); type of projects performed (e.g., applications, value, duration, type of product installed); and bidding and estimating practices (e.g., productivity values in various formations, cost of installation). Current and future trends in the industry are identified and discussed.

  • ENVIRONMENTAL REMEDIATION USING Horizontal Directional Drilling: ApPLICATIONS AND MODELING
    Practice Periodical of Hazardous Toxic and Radioactive Waste Management, 1998
    Co-Authors: Erez N. Allouche, Samuel T Ariaratnam, Kevin W. Biggar
    Abstract:

    The use of Horizontal Directional Drilling (HDD) technology in environmental remediation operations is an emerging field. An overview of Horizontal environmental well technology, and its use in North America is presented. The advantages and disadvantages of this technology are discussed and three case studies are described. The case studies demonstrate the use of Horizontal wells to effectively remediate contaminated soil and ground water. In the future, greater utilization of this technology will likely occur as both the direct installation costs and the risks borne by the contractor decline. This can be partially achieved by the utilization of numerical tools such as modeling and simulation software, which can contribute to reducing uncertainty and increasing productivity. One such application named SEHDDO (simulation environment for Horizontal Directional Drilling operations) is described. When fully developed this computational framework will include a three-dimensional (3D) simulation of well perform...

Ian D. Moore - One of the best experts on this subject based on the ideXlab platform.

  • Analysis for Long-Term Response of Pipes Installed Using Horizontal Directional Drilling
    Journal of Geotechnical and Geoenvironmental Engineering, 2012
    Co-Authors: Abdul Ghafar Chehab, Ian D. Moore
    Abstract:

    AbstractEstimation of the pulling forces during installation is an important step in the successful design of a Horizontal Directional Drilling project. Moreover, estimation of the postinstallation loads is important for the prediction of the long-term performance of the installed pipe. An algorithm is developed to calculate the short and long-term response of steel (elastic) and polymeric (viscoelastic and viscoplastic) pipes installed using Horizontal Directional Drilling. The program simulates the movement of the pulling head, calculates the installation loads, and employs nonlinear, time-dependent constitutive models to calculate the polyethylene pipe response. The program is evaluated by comparing its calculations with known solutions, as well as with other commonly used load estimation methods. After evaluation, the analysis is used to analyze a typical Horizontal Directional Drilling installation. It is shown that the pipe experiences cyclic response during installation and a combination of creep a...

  • parametric study examining the short and long term response of hdpe pipes when installed by Horizontal Directional Drilling
    Tunnelling and Underground Space Technology, 2010
    Co-Authors: Abdul Ghafar Chehab, Ian D. Moore
    Abstract:

    Abstract Estimation of the pulling forces is an important step in the successful design of a Horizontal Directional Drilling installation. Estimation of axial stress distribution along the pipe is also important for the prediction of its long term performance. This paper presents the results of a parametric investigation of the effect of different installation parameters on the short and long term response of the new pipe. The investigation was carried out using procedure HDDPIPE developed by the authors for the analysis of polymer and steel pipes installed by Horizontal Directional Drilling. The results show that stresses and strains continue to change along the pipe throughout its service life. Some installation parameters have significant effects on the short term installation loads, as well as the long term axial stresses and, potentially influence expected service life. The study demonstrates that half of the maximum short term axial stress during installation can be used as a conservative measure of long term axial stress. Less conservative estimates can be obtained using the authors’ new calculation procedure.

M. A. Polak - One of the best experts on this subject based on the ideXlab platform.

  • Horizontal Directional Drilling pulling forces prediction methods a critical review
    Tunnelling and Underground Space Technology, 2017
    Co-Authors: M. A. Polak, Liangxue Cai, Mark Knight
    Abstract:

    Abstract This work is motivated by the need for prediction of pulling forces during pulling back phase in the Horizontal Directional Drilling (HDD) installations for steel or polyethylene pipe. Six current prediction models are reviewed and components of pulling force resistance used in calculations are discussed. Two HDD installations are used to evaluate the accuracies of six models, including a 1816.2 m steel pipe crossing of the Yangtze River, Nanjing, China, and a 200 m polyethylene pipe installation at the University of Waterloo, Waterloo, Canada. Comparison of the results show that Driscopipe method and Drillpath method underestimate the maximum pulling forces in both steel pipe and polyethylene pipe cases, ASTM F 1962 method underestimates the maximum pulling force in steel pipe case while PRCI method and NEN 3650 method overestimate the maximum pulling force in polyethylene case, PRCI method, NEN 3650 method and developed PipeForce method are suitable for steel pipe case, ASTM F 1962 method and the PipeForce method are acceptable for polyethylene pipe case.

  • Pull-in force predictions for Horizontal Directional Drilling
    Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 2010
    Co-Authors: A.c.d. Royal, M. A. Polak, Christopher D. F. Rogers, David Chapman
    Abstract:

    Horizontal Directional Drilling is a ‘trenchless technology' that has been used successfully to install pipelines with minimal surface disruption. It has been developed to such an extent that pipelines 2·5 km long and with diameters approaching 2000 mm have been installed, and it has the potential to install pipelines over even greater distances. A study has been undertaken to investigate the use of Horizontal Directional Drilling to create conduits capable of housing electrical cables over long distances (arbitrarily taken as 10 km). This paper presents the results of an investigation into the pull-in forces associated with long-distance Horizontal Directional Drilling installations with different pipe diameters using the Pipe-force 2005 model. The outcomes of the study suggest that if the creation of the borepath can be controlled adequately, then it is theoretically conceivable that pipes of 600 mm diameter could be installed over the maximum distance considered in this project using conventional drill...

  • Mechanical modelling for pipesin Horizontal Directional Drilling
    2002
    Co-Authors: M. A. Polak, Afdal Lasheen
    Abstract:

    Thispaper pres entsa new technique to predict forcesand deformationsof pipesins talled underground by Horizontal Directional Drilling (HDD). The proposed technique consists of several models each describing different aspects of mechanics of HDD. It allows prediction of the shape of the pipe in the borepath. Based on the pipe shape, shape of the borepath and pipe stiffness, the contact forcesbetween the pipe and the borepath are calculated. The contact forcescaus e friction and thusaxial pulling force is induced to equilibrate the frictional forces and the weight of the pipe. The analytical model is used to study the stresses and strains on two pipes that were tested in the field. The theoretical results are compared with the strains measured in the field. � 2002 Elsevier Science Ltd. All rights reserved.

  • mechanical modelling for pipes in Horizontal Directional Drilling
    Tunnelling and Underground Space Technology, 2001
    Co-Authors: M. A. Polak, Afdal Lasheen
    Abstract:

    This paper presents a new technique to predict forces and deformations of pipes installed underground by Horizontal Directional Drilling (HDD). The proposed technique consists of several models each describing different aspects of mechanics of HDD. It allows prediction of the shape of the pipe in the borepath. Based on the pipe shape, shape of the borepath and pipe stiffness, the contact forces between the pipe and the borepath are calculated. The contact forces cause friction and thus axial pulling force is induced to equilibrate the frictional forces and the weight of the pipe. The analytical model is used to study the stresses and strains on two pipes that were tested in the field. The theoretical results are compared with the strains measured in the field.

  • Field Tests on HDPE Pipes Installed Using Horizontal Directional Drilling
    Journal of Infrastructure Systems, 2000
    Co-Authors: Marc Gelinas, M. A. Polak, Robert Mckim
    Abstract:

    The results of two field tests on instrumented high density polyethylene (HDPE) pipes installed using Horizontal Directional Drilling (HDD) are presented in this paper. HDD is a method of installing underground pipelines that involves pulling the pipe through a Horizontal borehole. HDD is increasing in popularity; however, little field research has been conducted examining the effect of this installation method on the pipe. The presented tests involved 200 mm (8 in) diameter, standard dimension ratio (SDR) 17 HDPE pipes pulled along 55 and 90 m (180 and 295 ft) borepaths. The results include readings from a pressure transducer attached to the drill rig hydraulic system and strain gauge readings from instrumented test sections at different locations in the pipes. The presented results were recorded during the pull-back operations and for several hours after the installations were completed. The recorded strains and calculated axial strains are shown versus time and versus the approximate location in the borepath.