horizontal directional drilling hdpe pipe

HORIZONTAL DIRECTIONAL DRILLING - PRACTICALITIES Range of soil types Most soil and rock types can be drilled with the appropriate tooling and processes. Gyro-based locating system The gyro based system is fully autonomous and therefore one of the most accurate systems where sufficient diameter, HDD Design Guideline Task Committee of the Technical Committee on Trenchless Installation of Pipelines (TIPS) of the Pipeline Division of the American Society of Civil Engineers. The output of the Calculator can be used to assist the User in 0000029412 00000 n The drill rig and auxiliary equipment located on the pipe exit side are relatively large, and require water access, storage, and mixing and pumping facilities. As the drill string is withdrawn to the drilling rig, the back-reamer enlarges the borehole and the pipe string is pulled into the hole. Uncontrolled or unguided drilling can lead to substantial destruction, which can be eliminated by properly locating and guiding the drill head. In the absence of anti-buoyancy techniques, such as internal water ballast, the frictional drag developed within the borehole is generally much greater than that developed outside, because of the high buoyant weight for an empty PE pipe. Horizontal Directional Drilling, Pipe Bursting, Microtunnelling and Pipe Jacking, Rev 1, February 2010; b. Drilling mud is used to cool the cutter and transmitter electronics, to flush excavated soil from the borehole and to lubricate the borehole. An additional length L1 exterior to the drilled path allows for handling at both ends and possible other effects (path curvature, thermal contraction, stretching, etc.). Pipe reaming, also known as pipe eating, is a trenchless pipe replacement technique that removes the host pipe while at the same time installing a new replacement pipe. Figure 2. Typically a thicker wall is required for HDD pull-back capacity than is required for operating pressure. This is the basis of MAB-7 (2020), MAB Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of HDPE (PE4710) Pipe in Municipal Applications, as referenced in the 2022 edition of ASTM F1962. Next, the bore created during pilot hole drilling is enlarged to a diameter that will facilitate installation of the desired pipeline. For the larger diameters, the equipment is large, and requires support equipment such as generators and hydraulic power units. It offers unmatched corrosion and chemical resistance, is flexible, durable and available in long reel lengths to reduce joints and installation time. 0000000016 00000 n The Calculator uses input such as directional changes in the bore path, and other project variables, to determine the Calculated Tensile Load on the selected HDPE conduit, as compared to the . Image Courtesy: Exova Utilities, Large "maxi" drilling rig. The physical properties of the PE4710 material allow greater pulling forces and also provide greater resistance to collapse. 0000004070 00000 n For direct comparison, two instrumented 200mm SDR-17 DIPS HDPE pipes were . 3), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council 0000002230 00000 n %PDF-1.5 % hTYO0OG >rKR(PQ9Fg&% The bore is steered to create an initial hole at the required line and grade. 29), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council The construction area is relatively small and the construction period is relatively short. The ASTM standard specifically addresses polyethylene (PE) pipe, a flexible product, for which the effects of any bending stiffness on drag forces at route bends or path curvature may be ignored. Experience: Actively engaged in horizontal directional drilling for minimum of 3 years. Including River Crossings. 0000018014 00000 n Chapter 11 - Pipeline Rehabilitation by Sliplining with PE Pipe Chapter 12 - Horizontal Directional Drilling Chapter 13 - HVAC Applications for PE Pipe Chapter 14 - Duct and Conduit Chapter 15 - General Guidelines for Repairing Buried PE Potable Water Pressure Pipes Chapter 16 - Pipe Bursting Glossary Abbreviations Index International, Inc., 2015, pg. At diameters up to and including 180mm the new pipe can be supplied as a coil, and this will be loaded into and dispensed from a coil trailer, positioned adjacent to or over the entry excavation. At the "maxi" end of the range, several loads of equipment are typically shipped to site and the site area required is a significant consideration. All material subject to strictly enforced copyright laws. Coiled products should be restrained before being released or cut. path, and other project variables, to determine the Calculated Tensile Actual ID will vary. Pipeline geo-environmental design and geohazard management. The most significant was to the alternative guidelines TR-46 provided by the Plastics Pipe Institute (which has been superseded by its Municipal Advisory Boards MAB-7), as more appropriate for mini-HDD operations. Such effects are independent of the pipe stiffness, pipe diameter, borehole clearance, radius of curvature or direction of curvature, and, in some cases become a major consideration due to their compounding effect. 0000004689 00000 n The drilling fluid is sent into a machine called a reclaimer which removes the drill cuttings and maintains the proper viscosity of the fluid. The stiffness of the steel drill rods determines their allowable curvature, in order to avoid fatigue. Most soil and rock types can be drilled with the appropriate tooling and processes. Section includes requirements for Horizontal Directional Drilling (HDD) of High Density Polyethylene (HDPE) Pressure Sewer pipe. It should first be allowed to reach mechanical and thermal equilibrium, to avoid shrink back onto the bore hole. Directional drilling is the drilling of non vertical wells. Drilling uids are designed to match the soil and cutter. It is important to properly use the drilling fluid for the initial pilot bore and reaming operations, and to accurately locate and track the bore path. 7_ Chapter 12 of the Plastic Pipe Institute (PPI) Handbook of Polyethylene Pipe, TR-46, Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe. ASTM International F1962, Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, provides recommended procedures for the placement of PE pipe using maxi-HDD. FIGURE 1. Additional route bends, beyond those shown in. %%EOF 0000020956 00000 n Horizontal directional drilling (HDD) is a trenchless construction method used to install pipes underground without disturbing the ground surface. Trenchless technologies, such as horizontal directional drilling, pipe bursting and slip lining allow the entire water supply and drainage system of a city to be replaced without causing a major traffic jam and incurring the enormous cost of restoring streets and roads. This material is significantly tougher than older, previously used PE products, facilitating successful completion of more complicated, difficult maxi-HDD projects. Hn0EYZJ2^u6*u.!Z'3:f[@]p!1HvELiF|Uku mSYQ'IS`2"q ,`-*{|dcHgQcm=JpjW 0000009554 00000 n 0000015903 00000 n The reamer's diameter depends on the size of the pipe to be pulled back through the bore hole. It is also important to identify areas of poor or difficult ground, such as gravel and cobbles, which could allow the drilling mud to escape or create bore instability unless an appropriately engineered drilling mud can be used. This handbook will cover A bore diameter of 1.2 to 1.5 times the PE100 pipe OD is normally required. Drilling fluid may escape to the surface or other facilities unless carefully managed. Directional boring can be utilized with various pipe materials such as PVC, polyethylene, polypropylene, ductile iron, and steel provided that the pipe's properties (wall thickness and material strength) enable it to be both installed and operated (if applicable) under acceptable stress limits. MDPE and HDPE pipes shall conform to the current ASTM D1248, ASTM D2513, ASTM D3350, and ASTM F714. Monitoring and contingency planning should be in place prior to and during drilling below or in the proximity of environmentally sensitive locations. 4498 0 obj <>/Filter/FlateDecode/ID[<4208EEF0A5E3F94484FA965871FBCC68><35164F1782C1CE48B496975219464345>]/Index[4487 20]/Info 4486 0 R/Length 74/Prev 887916/Root 4488 0 R/Size 4507/Type/XRef/W[1 3 1]>>stream 0000029482 00000 n Learn about the various stages of construction. The number of construction personnel is relatively small, and at least 10-20 people are required for manual excavation, while only 7 people are used for pipeline directional drilling technology. Nominal pressure (PN) is based on C = 1,25 and an operating temperature of 20C. As the hole is bored, a steel drill string is extended behind a cutting head. While ASTM International F1962 may be purchased from the ASTM International website (www.ASTM.org), the overall guidelines, including preliminary investigation and implementation procedures, as well as the detailed design methodology for selection of the proper pipe strength, are reflected inChapter 12 of the Plastic Pipe Institute (PPI) Handbook of Polyethylene Pipe, In addition, the ASTM International F1962 methodology is now available in a free online tool designated asPPI BoreAid. ASTM F1962 addresses the overall planning and design, product selection and installation practices for the placement of PE pipe using maxi-HDD equipment. ((H`|JSgy>_)gk]f2%a!gS0qF&)0C@WF%`cJ!Q8x`1f'H#\oe5MaKR28(.n3Z1CUjGTC+o0kBJ0N t-A K:Xyd89EtL}vfAhdQ;>!E@y@}[hE_8 . FIGURE 1 illustrates the operation in a city or urban application. The theoretical model used to develop the formulae for estimating the peak required tension (Section 8) assumes that the local frictional drag forces on the pipe are proportional to the local normal bearing forces applied at the pipe surface. For standardization of the techniques, different trenchless technology promoting organizations have developed guidelines for this technique. Depending on the location and extent of the operation, a variety of permits or approvals may be required, possibly from federal, state or local jurisdictions. 0000029587 00000 n He can be reached at lslavin@ieee.org. 0000002438 00000 n This weight is a function of the drilling fluid/slurrys density, for which a conservatively high value is suggested for design purposes. When drilling through harder ground formations and in rock a mud motor is used to drive the drilling bit independently of drill rod rotation. DNVGL-ST-F101: Code Check ; ASME B31.4/B31.8 Code Check . hbbd```b``k$T "7> 0000016392 00000 n Over the last two decades, contractors have increasingly turned to the horizontal directional drilling (HDD) method. The recent (2022) edition of ASTM F1962 has revised the relevant physical characteristics of the PE materials, providing the physical properties for the most recent high density polyethylene (HDPE) material, PE4710. For the larger diameters typically used for such applications, PE pipe is supplied in discrete segments that are fused together in the field, with essentially no loss in tensile strength, facilitating the pulling operation. Safety is a primary concern, during any activity, including construction utilizing maxi-HDD equipment and procedures. This is to be avoided if at all possible. TR-46, Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe, was therefore developed to serve as an inclusive document, providing practices for selection and placement of HDPE pipe using mini-HDD. In many instances, smaller bores do not require the use of drilling fluid, only water, and in even less significant bores no fluids at all. No-Dig 2010, Chicago, IL, US. Copyright 2021 Henan Bingo Pipeline Co., Ltd. All rights reserved. During pull-in of the pipe a load link should be inserted between the swivel and the pipe to show and record the axial load applied. [citation needed], For smaller bores, proportionally smaller and more portable equipment is available. HDD Analyser is a comprehensive program for the design analysis of pipelines crossings by horizontal direction drilling methodology. The methodology of advancement also varies somewhat between soil and rock crossings. ABOUT THE AUTHOR: Lawrence Slavin, Ph.D., provides outside plant consulting services as a member of IEEE, the worlds largest technical professional organization dedicated to advancing technology for the benefit of humanity. The ASTM document provides overall guidelines for a maxi-HDD operation, addressing preliminary site investigation; safety and environmental considerations, regulations and damage prevention; bore path layout and design; implementation; and inspection and site cleanup. Pilot holes are enlarged in pre-reaming stages using a reamer (soft soils) or a hole opener (rock). While considered convenient and practical to apply by experienced engineers for a maxi-HDD operation, the overall ASTM International F1962 procedure and guidelines represent a relatively extensive, tedious process, when considering smaller, lower cost operations associated with typical mini-HDD applications. Pipeline Design for Installation by Horizontal Directional Drilling -. When new pipe is to be installed or it is not possible to rehabilitate a pipe, so that it needs to be replaced but is in a congested area of buried infrastructure so that conventional methods such as bursting cannot be used safely, then a new or replacement PE100 pipe can often be installed by horizontal directional drilling. Rizkalla, Moness. The recent (2022) edition of ASTM F1962 has revised the relevant physical characteristics of the PE materials, providing the physical properties for the most recent high density polyethylene (HDPE) material, PE4710. The pulling load on the polyethylene pipe must not exceed the allowable tensile load, or safe pull strength of the pipe. This picture shows a small barrel reamer attached to the new pipe ready to be pulled in. Residential neighbourhoods remain unscathed, commercial districts do not have to deal with loss of business, and rural regions remain undisturbed. Once the bore has been completed and reamed to the required diameter, the PE100 pipe is prepared for pull-back by attaching the end to a pulling head, swivel, reamer and drill rods at the drill exit point. 765 0 obj <>stream The HDPE Pipe Model, developed by the PE100+ Association with inputs from many industry experts, includes the most frequently asked questions and answers (Q&A's) of all the elements through the pipe system value chain: design, materials, construction, operation & maintenance, and environmental issues. It is important that, if the pipe to which the new pipe is being connected has spigot and socket joints, which will have little end load resistance, means must be provided to absorb the axial tension. HORIZONTAL DIRECTIONAL DRILLING PART 1 GENERAL 1.1 DESCRIPTION A. The route planning should include subsurface investigations/survey to identify ground conditions, so that appropriate equipment can be selected. This can be changed at any time via the Cookies link at the bottom of the page. It's flexibility, strength and fused joints as strong as the original pipe itself, make it ideal for HDD applications. The biggest advantage of HDPE HDPE trenchless pipes for HDD besides its long-life expectancy, is its heat-fused joints, which make the pipe a single homogenous pipeline. This is a highly specialised technique, and needs an experienced and highly trained operating team, an essential member of which is the drilling mud technician, particularly on the larger diameters. Unnecessarily large curvatures (sharp bends) also contribute to bending stresses in the HDPE pipe, but generally are not significant for such a flexible product. For a drill of this length, with a pull back of 10 inch HDPE pipe, the anticipated schedule is set out in Table 2: Table 2. [citation needed], Location and guidance of the drilling head is an important part of the drilling operation, as the drilling head is under the ground while drilling and, in most cases, not visible from the ground surface. Especially HDPE raw materials have good adhesion and toughness. Typical Entry Site Layout. The pilot bore is created using a drilling head, which in its simplest form has a slanted face, and this is pushed and rotated by long high tensile flexible drill rods. Special care must be taken with the pressure of drilling mud, especially when the operation is shallow. In the absence of ballast, the maximum total calculated tension will typically occur towards the end of the installation; e.g., at point C or D. The net resulting peak tensile stress is required to be less than the safe pull tensile stress of the HDPE pipe. In addition, there should be a detailed subsurface investigation, including test borings and soil analysis, to confirm the general suitability for the drilling operation, and to determine the appropriate equipment and hardware. International, Inc., 2015, pg. HDPE conduit, also known as PE conduit, is the preferred material to house and protect electrical power and communications cables in typical applications such as power utilities, telecommunications, CATV, SCADA, FTTH, ITS, highway lighting, and other underground utilities. The risk of scoring of the pipe can be minimised by ensuring the reamed bore is of sufficient diameter and properly cleaned and proved prior to pipe pull-back. ASTM International F1962, Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, provides recommended procedures for the placement of PE pipe using maxi-HDD. Horizontal drilling, one type of directional drilling, is a method that is used to install pipes, conduits and cables underground in a long shallow arc. Horizontal directional drilling is the most cost-effective and efficient method for highway bores. HDD is a steerable trenchless technique of installing everything from pipe to cable with minimal construction footprint and minor impact on surrounding areas. 0 Drilling fluid holds the cuttings in suspension to prevent them from clogging the bore. This page was last edited on 12 December 2022, at 19:58. Pipe hdd drilling, slant drilling, horizontal directional drilling good practices guidelines, drill guide for pipe, utility horizontal directional drilling, directional drilling manual, directional drilling through rock, how much does a directional driller make, horizontal directional boring specifications, small directional drill, back reaming drilling definition, horizontal pipe rollers, directional drill back reamers, horizontal directional drilling specifications hdpe, how to drill horizontally, small directional boring machine, horizontal directional drilling procedure, hdd drilling procedure, horizontal drilling techniques, horizontal bore, hdd drilling equipment, hdd machine price, straight line directional drilling, horizontal directional drilling process, horizontal directional drilling standards, horizontal direct drilling, horizontal drill guide, dig and rig equipment, what is horizontal directional drilling, drilling pipes, horizontal drilling equipment, horizontal directional drilling rig, how do they drill horizontally, what is slant drilling, drilling pipe sizes, directional drilling methods, horizontal directional drilling guidelines, horizontal directional drilling design guidelines, horizontal directional drilling machine, horizontal directional drilling specifications, hdd pipe, barrel reamer hdd, horizontal directional drilling equipment, PE100+ Association 2013-2023 - All rights reserved. The traversing pipeline can fully meet the design curve and deep buried, and the quality is safe and reliable. As the use of trenchless technology continues to grow in popularity and use, so too does the importance of using top-quality pipe material that meets the specific requirements of the particular technique being used. ASTM F1962, Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, was originally approved in 1999, following development within the ASTMs F17.67 Trenchless Technology Subcommittee. Horizontal drilling or Utility Installation Directional Drilling, minimizes environmental impact and is often used when trenching or excavating is not a practical or viable option. [3], The process is suitable for a variety of soil conditions including clay, silt, sand, and rock. Where cables and other utilities are identified in close proximity to the proposed alignment they should be exposed so that progress of the drilling can be monitored and stopped if required. endstream endobj startxref As the name denotes, trenchless technology requires few or no trenches to be dug for the maintenance work to be done and can be defined as, A family of methods, materials, and equipment capable of being used for the installation of new or replacement or the rehabilitation of existing underground infrastructure.. [1], Although often used interchangeably, the terms directional boring and horizontal directional drilling are distinct in that they convey a different sense of scale. F1962 Standard Guide for Use of Maxi-Horizontal Directional Additional route bends, beyond those shown in FIGURE 2, as well as possible bends in the horizontal plane, should be avoided, and will increase the required pulling forces. It's flexibility, strength and fused joints as strong as the original pipe itself, make it ideal for HDD applications. The mud motor is powered by the drilling mud pumped through the drilling rods. First, a pilot bore is made with a suitably sized drilling rig. [citation needed], The technique has extensive use in urban areas for developing subsurface utilities as it helps in avoiding extensive open cut trenches. Certain users require weak links that fail before the pipe if overload occurs but this will result in a partly installed pipe with no means of completing the installation without major disruption, cost and delay. These units are used in conjunction with a drilling fluid reclaimer, high volume pump or pumps, an excavator (or comparable equipment for managing drill pipe), along with an assortment of other ancillary equipment (e.g. The use requires that the operator have complete information about existing utilities so that they can plan the alignment to avoid damaging those utilities. \K~[QvKnoD>3QV,0rl!BgH;h#cl{Y u~\L5>?t=aX`GS]r@r&{BO9wj_ It is designed to be maintenance free as there is no need for man-entry maintenance. This method is regularly used on distribution systems, which typically use small diameter mains, and on rural distribution systems it often enables mains to be installed alongside the carriageway without impeding traffic flow, as the drilling equipment is compact and self contained. Fluid exhaustion associated with smaller bores is proportionally less as well. 0000017112 00000 n Our mission is to create value by employing innovation, quality and technology to develop a unique and evolving product portfolio; to create employment in our community; and to enrich the lives of our customers with our unique and environmentally friendly products. Calculator allows, users are recommended to review PPI TR-46 and/or ASTM HDPE is a polyethylene thermoplastic made from petroleum. In contrast, the convenient model employed in ASTM F1962 results in a very low magnitude effect, which is directly added to the estimated pulling forces, due to frictional drag, including the capstan effect. and Material (type of HDPE). [citation needed]. hbbd``b`$mA,k D\ illustrates the operation in a city or urban application. Mini-HDD applications, for instance, tend to contain bore paths with additional curvature because of the need to avoid known obstacles or follow a curved right-of-way, as well as more subtle curvature due to path corrections characteristic or typically less precisely controlled installations. 2022 Underground Construction, 2022 Gulf Publishing Holdings LLC. ASTM F1962 contains 10 main chapters or sections, as briefly described below, supplemented by several appendices. This information is encoded into an electromagnetic signal and transmitted through the ground to the surface in a walk-over system. Because the operator of the drilling rig might not notice a momentarily excessive pulling force, a load link inserted between the swivel and the PE100 pipe to record pulling load can be used to record the maximum axial load exerted on the pipe. The initial decision involves selecting the size and capacity of the machine. This material is significantly tougher than older, previous polyethylene (PE) products, facilitating successful completion of more complicated, difficult maxi-HDD projects. The intermediate horizontal segment, L, , may be of zero length. If the calculation shows that the maximum permissible load may be exceeded then it may be necessary to increase the capacity of the PE100 pipe by increasing its thickness. Mini-HDD applications, for instance, tend to contain bore paths with additional curvature because of the need to avoid known obstacles or follow a curved right-of-way, as well as more subtle curvature due to path corrections characteristic or typically less precisely controlled installations. UI. Slavin, Larry and Scholl, Jeff (2014). Contact us today for a free quote. Both ends of the bore path must be investigated to confirm their feasibility for successfully completing the installation of the large, long pipeline. Unnecessarily large curvatures (sharp bends) also contribute to bending stresses in the HDPE pipe, but generally are not significant for such a flexible product. greater than 1.0 indicates that the displayed wall type will have Directional boring can be utilized to cross any number of surface obstacles including roadways, railroads, wetlands, and water bodies of varying sizes/depths. 19), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council to facilitate typical operations. ~U4chn~ _ 0000009157 00000 n Advantages of the High Density Polyethylene Trenchless Pipes For Horizontal Directional Drilling The biggest advantage of HDPE HDPE trenchless pipes for HDD besides its long-life expectancy, is its heat-fused joints, which make the pipe a single homogenous pipeline. For such cases, the buoyant weight of the submerged pipe, in combination with the corresponding frictional characteristics, is the major factor in determining the required pull force. Pipe manufacturers can advise on the allowable loads. 0000010676 00000 n endstream endobj startxref ASTM F 1962 provides formulae for determining the buoyant weight under various conditions. For situations with burial depths or bore lengths beyond what the According to industry standards, quality plastic pipe should endure in excess of 100 years without failure. Where large parts of the route of the main are not accessible, such as for river crossings, horizontal directional drilling is a much less costly technique than tunnelling, and can be used for large diameters, such as trunk mains. Reliable communications must be in place between the pipe entry location and the drilling rig operator, so the rig can be stopped immediately if required. Add: 13th F, Longyu International Building, Zhengzhou Area(Zhengdong), China(Henan) Pilot Free Trade Zone. A clogged bore creates back pressure on the cutting head, slowing production. Pipefusions years of experience doing on-site fusion for customers from Alert in the arctic circle to the deep south of Texas, guarantees weve seen just about everything and have the experience to complete your project. Large "maxi" drilling rig. Horizontal drilling, one type of directional drilling, is a method that is used to install pipes, conduits and cables underground in a long shallow arc. The MGS, also has a secondary means of location verification utilizing wire grids laid on the ground surface. Example of Capstan Effect (Courtesy of Outside Plant Consulting Services, Inc.). Output can be emailed directly from the Calculator, or Horizontal directional drilling (HDD) consists of several installation steps. 0000018683 00000 n Which Method to Use When Estimating Maxi-HDD Installation Loads- ASTM F1962 or the PRCI Method. celebrity homes montecito map,

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