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. 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. These two images show a small directional drilling rig being unloaded to install 100 metres of 100mm PE distribution main, and in place ready to start drilling. This material is significantly tougher than older, previously used PE products, facilitating successful completion of more complicated, difficult maxi-HDD projects. FIGURE 2 illustrates a typical geometry for a maxi-HDD operation, in this case corresponding to a river crossing. In addition to external pressures, due to the head of the relatively dense drilling fluid/slurry or subsequent (post-installation) soil loads, the pipe must withstand the axial tensions induced during the pullback process. The theoretical basis of the formulae for estimating the required pulling force is provided below. It was reissued in 2005 and 2011, and previously reinstated in 2020. water tanks, spoil containers, etc.) This phenomenon is referred to as the capstan effect, as it is the principle of the capstan winch, as illustrated in. Lastly, the pipeline is pulled into the enlarged hole, thus creating a continuous segment of pipe underground exposed only at the two initial endpoints. The staging of larger diameter and longer pipelines may require the use of pipe rollers and other facilities to ensure the pipe is not damaged during pull-back. [3], The process is suitable for a variety of soil conditions including clay, silt, sand, and rock. Any pipe installed by HDD is subject to loads of a different type and/or magnitude than are experienced in other construction methods, including by direct burial in a trench. xb```c````e`` @v @s@( LTo18R(l1kUpaqHO(>HHblBU2f$,G.9|lL7. as well as possible bends in the horizontal plane, should be avoided, and will increase the required pulling forces. trailer 349 32 Alternate materials will require prior approval. Horizontal Directional Drilling, Pipe Bursting, Microtunnelling and Pipe Jacking, Rev 1, February 2010; b. At a minimum, it should be able to provide the necessary pulling force, based on the estimated required pulling force for the pipe itself, with possible additional capacity for accomplishing reaming. Directional boring offers significant environmental advantages over traditional cut and cover . For larger diameters, and in rock, the drilled material must be removed from the bored hole as drilling and reaming progresses. 19), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council 349 0 obj <> endobj Although ASTM F1962 is intended for carefully designed, well-controlled maxi-HDD installations, the methodology has been extended, via appropriate assumptions and mathematical simplifications, to provide a simpler methodology that may be advantageously applied to typical, less-controlled mini-HDD projects. Due to the magnitude and complexity of maxi-HDD equipment and control systems, a well-trained, experienced crew is essential to plan and execute the operation. Horizontal directional drilling (HDD) is a trenchless construction method used to install pipes underground without disturbing the ground surface. He can be reached at lslavin@ieee.org. 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. Directional Drilling Directional drilling is the drilling of non vertical wells. endstream endobj startxref Soils containing high percentage of gravel and cobbles are best avoided unless the contractor is especially experienced in the conditions. The route of the new main should be carefully investigated to identify any potential clashes with existing buried infrastructure and, where necessary, the exact locations of any such clashes should be proved by trial holing. 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. All material subject to strictly enforced copyright laws. 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. Next, the bore created during pilot hole drilling is enlarged to a diameter that will facilitate installation of the desired pipeline. 0000029412 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. D2dIFya Horizontal Directional Drilling Good Practices, 3rd Edition; c. The Plastics Industry Pipe Association of Australia (PIPA); d. Water Services Association of Australia (WSAA . Horizontal directional drilling (HDD) is a safe method of installing an underground pipeline. This phenomenon is referred to as the capstan effect, as it is the principle of the capstan winch, as illustrated in FIGURE 5. 0000021965 00000 n One of the reasons why HDD is so effective is because directional boring contractors utilize polyethylene pipe. hTYO0OG >rKR(PQ9Fg&% HDPE is the safest and most efficient option for sewer pipe replacement. The pipe bursting method is in full compliance with all federal regulations and guidelines. Horizontal Directional Drilling (HDD) Calculator with HDSS or TR FLEX Pipe Horizontal Directional Drilling / Trenchless Applications and Pulling Heads Frequently Asked Questions (FAQs) News About Us History Our Vision, Our Mission, Our Values Our Leadership About Quikrete Industry Links Terms & Conditions of Sale/Purchase Website Conditions of Use This is not a technique to which the lowest price wins the contract principle should be applied. Thus, ASTM International F 1962 provides a means of determining project feasibility, as well as initial design information. Membership; Articles; Analyses . 0000002811 00000 n The Calculator uses input such as directional changes in the bore Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of HDPE (PE4710) Pipe in Municipal Applications. 0000021613 00000 n FIGURE 1 illustrates the operation in a city or urban application. Horizontal Directional Drilling (HDD) Horizontal Directional Drilling (HDD) is often used to install HDPE pipe in situations where an obstacle, either above ground or below the surface, does not allow traditional installation methods to be used. Corresponding changes to the document, if any, were minimal, including providing additional or updated references. Fluid exhaustion associated with smaller bores is proportionally less as well. The HDPE pipe should not be cut prematurely. H0+X u7A@>&F Output can be emailed directly from the Calculator, or as referenced in the 2022 edition of ASTM F1962. 0000009554 00000 n It is designed to be maintenance free as there is no need for man-entry maintenance. 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. 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. 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. As the hole is bored, a steel drill string is extended behind a cutting head. Midi-HDD equipment may be used for crossing beneath rivers and roadways. MDPE and HDPE pipes shall conform to the current ASTM D1248, ASTM D2513, ASTM D3350, and ASTM F714. 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. International, Inc., 2015, pg. The size, complexity and need for additional support equipment increases generally as the pipe diameter and length increase. Directional boring can be utilized to cross any number of surface obstacles including roadways, railroads, wetlands, and water bodies of varying sizes/depths. International, Inc., 2015, pg. hbbd``b`$mA,k D\ Midi-HDD may be employed for boring paths up to 1,000 feet in length, at depths as much as 75 feet, and placing pipes up to 24 inches diameter. 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. At 180mm the maximum length on a coil is generally 100 metres, and smaller diameters can be longer. UI. 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. The ASTM International document provides overall guidelines, addressing preliminary site investigation, safety and environmental considerations, regulations and damage prevention, bore path layout and design, implementation, and inspection and site cleanup. %PDF-1.5 % 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. 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 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. 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. It can be used on land, sea, urban areas and rivers. B. 0000010676 00000 n Add: 13th F, Longyu International Building, Zhengzhou Area(Zhengdong), China(Henan) Pilot Free Trade Zone. PART 1 GENERAL 1.1 DESCRIPTION Section includes requirements for Horizontal Directional Drilling (HDD) of High-Density Polyethylene (HDPE) Pressure Sewer pipe. 0000015903 00000 n Horizontal Directional Drilling Plastic Pipe (HDPE & MDPE) Home; HDD (Polyethylene Pipe) - Input; Please [ Log . The use requires that the operator have complete information about existing utilities so that they can plan the alignment to avoid damaging those utilities. 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 . The bore is steered to create an initial hole at the required line and grade. path, and other project variables, to determine the Calculated Tensile 4487 0 obj <> endobj Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig. The image above shows a straightener re-rounder being used on a 180mm pipe, and whilst it is in the trench here, it can be attached to the coil trailer if so desired. [citation needed], For longer more challenging crossings, tractor trailer mounted drills capable of 1,320,000 lbs (thrust/pullback force) and 150,000 ft-lbs (rotary force) may be used [600 tonnes- 204,000 N-M ]. When designing components to fit the pipe ID, refer to pipe dimensions and tolerances in the applicable pipe manufacturing specification. CANTEX's CAN>LOC and CAN>GRIP systems offer many benefits over HDPE, which is the conduit most used for HDD applications. The cutting head is then removed and a back-reamer attached. 3.0 SCHEDULE . Image Courtesy: Exova Utilities, Large "maxi" drilling rig. Now Available: ASTM Guide for Use of Maxi-HDD Placing HDPE Pipe Under Obstacles. 0000019826 00000 n ;0CKh6sKjrmlq9vwiJ%)m5]UWd It is using a simple flat blade slant face head for drilling in clay, the excavation being typically sized for man entry piecing up. on the User Inputs and the embedded mathematical formulas and values. 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 <<32159D5C8C60A744B61AE13533FBF1FA>]>> Horizontal directional drilling is the most cost-effective and efficient method for highway bores. Using directional drilling techniques to guide a drill string along a bore path under obstacles such as rivers, lakes, railway crossings or highways, enables replacement of existing water lines, or installation of new ones, at a relatively rapid rate. First, a small diameter pilot hole is drilled along a directional path from one surface point to another. [citation needed], For smaller bores, proportionally smaller and more portable equipment is available. This arc follows a preset bore path using a surface drilling rig. Image Courtesy:Exova Utilities, Barrel Reamer.Image Courtesy:Exova Utilities, Mud recycling plant. Discussion of ASTM F1962 or How are the Pulling Load Formulas Derived and How They Are Used?. Supporting the 10 main sections, several appendices provide the physical properties of selected PE material, as well as a means of determining the post-installation loads and pipe deflection. HDPE is a polyethylene thermoplastic made from petroleum. DNVGL-ST-F101: Code Check ; ASME B31.4/B31.8 Code Check . It's flexibility, strength and fused joints as strong as the original pipe itself, make it ideal for HDD applications. For the larger diameters, the equipment is large, and requires support equipment such as generators and hydraulic power units. Complete Tooling Line ( All Types of Bits, Subs, Housings) Drill Rod Drilling Muds & Fluids Mule Tape Couplers Darts HDPE Pipe PVC Pipe & Fittings PVC Glue The pipe entry side, opposite the drill rig, must accommodate the long length of assembled (fused) pipe. Anticipated Schedule. As with any pipe pulling technique, the movement of the drill string and the pipe string should be monitored. for a specific application. 0 Polyethylene pipe is the pipe of choice for trenchless installations using directional drilling. HDPE pipe are widely used for trenchless sewer lateral replacement. Pressure capability is dependent upon pipe SDR and is not a function of the method. 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. This method has a very small potential damage footprint provided that adjacent buried infrastructure can be accurately located. For situations with burial depths or bore lengths beyond what the ASTM F1962 contains 10 main chapters or sections, as briefly described below, supplemented by several appendices. What truly separates HDPE from other pipe materials is that when it is fused together (using a wide variety of standard and custom components, fittings and joining systems) it creates one homogenous system that matches the same technical and environmental specifications as the HDPE pipe. International, Inc., 2015, pg. Tooling intended to navigate rock, or tougher formations, may use tungsten carbide alloys or polycrystalline diamond (PCD). The development of trenchless technology to rehabilitate existing underground infrastructure with minimal disruption to surface traffic, business, and other activities, has left a lasting impact on the construction and civil engineering industries. Those joints are also the pathway for contaminates to enter the pipe system. Safety is a primary concern, during any activity, including construction utilizing maxi-HDD equipment and procedures. 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. 0000010170 00000 n These pits will allow the drilling fluid to be collected and reclaimed to reduce costs and prevent waste. A result shown in Green and with a Safety Factor The Conduit Design Calculator automates the Mini-HDD calculations described in PPI TR-46 Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe. The MGS, also has a secondary means of location verification utilizing wire grids laid on the ground surface. The pipe string is attached to the back-reamer through a swivel device. 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. It has a wide range of applications and is not affected by water currents, climate and environment. 757 0 obj <>/Filter/FlateDecode/ID[<818473D849B370E99276959C150446C3><5862925C0F04774D9936C4C2CD7CF8D7>]/Index[745 21]/Info 744 0 R/Length 69/Prev 35703/Root 746 0 R/Size 766/Type/XRef/W[1 2 1]>>stream Related keywords :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. International, Inc., 2015, pg. These units may be capable of anywhere from 5,000 lbs to 100,000 lbs of thrust/push force and may be used for spanning between a house basement to a nearby shared water pipe.
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