July 10, 2021 July 10, 2021 Drilling Manual. Horizontal Directional Drilling is defined as a steerable system for the installation of pipes, conduits and cables using a surface launched drilling rig. Thus, all excavation pits shall be carried out down to at least 0.5m below the invert level of the lowest HDD bore. CONVENTIONAL BORING Typical length: 50 to 100 feet Typical uses: Road and railroad crossings Minimum workspace: 50 x 100 feet at entry/exit points Conventional boring consists of creating a shaft/ tunnel for a pipe or conduit to be installed to minimize surface disturbance. 4. Horizontal Directional Drilling (HDD) is a trenchless technology provides an installation alternative that offers a lot of benefit compared to traditional open-cut method. In this method, lightweight drills are used to drill low-depth wells on land. 17. Attached to the front of the rods is a cutting head and transmitter, which is controlled by a locator to achieve the correct line and level required. The Contractor shall furnish all labor, material, and equipment necessary to perform a complete horizontal directionally drilled (HDD) pipeline installation at the locations shown on the Construction Drawings. The exact method and techniques for completing the directionally drilled installation will be determined by the The major activities are as follows: 3.1.1 Mobilization of crew and equipment to the project site The horizontal drilling industry Page 8/18 method statement of horizontal directional drilling : hdd-01 : 00 : 1 2557 3 6 GENERAL 1.1. As techniques and working methods have improved, the Horizontal Directional Drilling operation has become a major contribution to the NDRC division. METHOD PERTAINING TO DIRECTIONAL DRILLING Method The initial drill out is carried out using high-pressure water through drill rods. b. Horizontal and vertical location requirements and clearances. In the 1980s, a Norwegian firm Devico AS developed the first directional core barrel.Since then constant research and development have made it a popular tool for conducting a geotechnical investigation. By Joanna Climer HDD for Watercourse Crossings Over the last 30 years, horizontal directional drilling has become the preferred pipeline construction method to cross major waterways. DIRECTIONAL DRILLING 1.0 General a) The intent of this specification is to provide general technical guidance to the utility contractor for the installation of pipelines using horizontal directional drilling (HDD) techniques. In the first stage, a small diameter pilot hole is drilled along the proposed line or center line that is desired. See Sketch 1 Calculation of Theoretical Settlement for approved method. Security Classification (of this report) 20. The HDD equipment arrives on site aboard multiple trucks. About Directional Drilling Directional drilling is the ability to maneuver a rod underground and direct it around obstacles. In this topic the method statement Horizontal Directional Drilling, our discussion about how we can make tunnels to pass the 11KV electricity cables to an island from underwater without affecting the traffic and without affecting the underwater environment, for that using perform the Horizontal Directional Drilling. The horizontal Installation of the HDPE sewage pipes will be carried out by a trenchless method called Horizontal Directional Drilling (HDD). The following steps are followed during Horizontal Directional Drilling Morning All, A friend and former colleague from the UK who now works as an H&S Manager in Australia is after a method statement or checklist for directional drilling. Directional boring, commonly called horizontal directional drilling or HDD, is a steerable trenchless method of installing underground pipes, conduits and cables in a shallow arc along a prescribed bore path by using a surface-launched drilling rig, with minimal impact on the surrounding area. + 49 441 971 9110 Fax + Horizontal Directional Drilling (HDD) is an environmentally friendly technology used for the underground installation of pipeline networks by non-destructive means below interferences such as watercourses, river valleys, swamps, erosive furrows, paved roads or highways, rail tracks, hills and buildings. Technology overview and benefits. We are utilizing HDD to install our Mariner East pipelines at specific locations throughout Pennsylvania, such as where the pipe is installed underneath a waterway, wetland or road crossing. Horizontal directional drilling is a popular method for railroad crossings. Horizontal Directional Drilling (HDD) technique. Horizontal Directional Drilling Calculations For Oil & Gas. Horizontal Directional Drilling View Directional Drilling Method Statement Purpose: Install utilities (Pipes & or cables) underground, without disturbing ground surface. The process generally includes five distinct phases as follows: Horizontal Directional Drilling (HDD) Horizontal Directional Drilling (HDD) is a trenchless method of sewer construction. Directional Core Drilling Equipment. The 13,247-foot (4,037-metre) drill allowed installation of a 20-inch pipe under the Missouri River. The exact method and techniques for completing the directionally drilled installation will be determined by the Drilling Fluid. GENERAL 1.1. No restrictions. Horizontal Directional Drilling only possible thru rock or hard strata (N-SPT>50) as per HDD sub-contractor. Horizontal directional drilling (HDD) has become the preferred method for construction of pipelines and cables under waterways, highways, areas congested with buildings. DESCRIPTION OF WORK A. The gyro is heavier than a magnetic steering tool and is housed in a large, steel sub, approximately 8.5 ft in length and weighs up to 1,200 lbs. Horizontal directional drilling. The Horizontal Directional Drilling Process The tools and techniques used in the horizontal directional drilling (HDD) process are an outgrowth of the oil well drilling industry. Directional Drilling (HDD) is a trenchless method of installing pipeline or conduit and cables underground, along a predetermined path, by the use of specialised drilling equipment. Extensive investigation using radio detection unit shall be conducted to finalize the entry pit and exit pit. Eagle HDD is locally owned directional boring company based in Colorado Springs, CO. We operate specialized equipment to install underground conduit, pipe, and cabling using a trench-less method commonly known as Horizontal Directional Drilling. From 12 HDD units manufactured in 1984, about 32,135 units were manufactured and sold in 2011. d. Preservation and restoration of highway facilities, appurtenances, natural (of this page) 21. It is suitable for soft to hard clays, wet soils, and environmentally sensitive areas. Figure 1. Traditionally, the term applies to large scale crossings in which a fluid-filled pilot bore is drilled using a fluid-driven motor at the end of a bend- HDD Advisor. HDD is a surface-launched drilling technique using bentonite slurry to support the drilled hole. Stage 2 Pre-Reaming the horizontal boring. As horizontal directional drillings (HDDs) growth stabilizes, safety has become our leading issue. This method avoids having to dig large pits to install jacking and boring machines. The components of a horizontal drilling rig used for pipeline construction are similar to those 0 Horizontal Directional Drilling Horizontal Directional Drilling is a guided horizontal boring system capable of installing utilities such as steel pipes and cables. Horizontal Directional Drillings sub-contractor, Horizontal Directional Drilling only possible thru rock or hard strata (N-SPT>50) as per HDD sub-contractor. TECHNICAL SPECIFICATIONS FOR HORIZONTAL DIRECTIONAL DRILLING I. Drills. As one of the most trusted horizontal directional drilling contractors, our crew approached the 2.5-mile project by using the pilot-hole intersection method, which requires two rigs to drill simultaneously toward one another from both sides of the project and eventually meet near the middle. Tortuosity refers to twistedness of crookedness of a drilled hole. A lubrication system mixes and pumps bentonite through a hollow stem drill rod to lubricate the hole, assists in the cutting of the earth and rock, and stabilizes the borehole. The companys latest record was set in Trinidad by successfully completing three 56-inch horizontal directional drilling (HDD) crossings, each over 2,200 feet long. There are 4 Stages in the Horizontal Directional Drilling Process. Horizontal directional drilling shall consist of the drilling of a small diameter pilot hole from one end of the alignment to the other, followed by enlarging the hole diameter for the pipeline insertion. c. Industry codes and other government regulations or provisions. Rock/hard strata level is assumed either as per levels, provided by the contractor, encountered in some excavations, or based on nearby boreholes. directional drill tunnel. Annex A Borehole Drilling Technical Specifications And Pages 1 11 Flip Fliphtml5. Horizontal directional drilling techniques are used for the steerable installation of new pipelines, ducts and cables. Directional Drilling. Pipe /Cable laying by Horizontal Directional Drilling (HDD) is one of the most innovative construction methods today. The multi-stage operation consists of drilling a pilot hole along a designed path, then enlarging the pilot hole by reaming in stages, and followed by pulling of HDPE pipe into the enlarged hole. Horizontal Directional Drilling (HDD) is a trenchless method used during pipeline installation that is effective at minimizing disturbance on the surrounding environment. Horizontal Directional Drilling Method Statement HDD Horizontal Directional Drilling (HDD) has made a significant impact in both the utility and pipeline installation industries over the past decade. Horizontal Directional Drilling (HDD) Method statement will cover the activities from site clearing/ layout. Crews dig small sending and receiving pits. Horizontal Directional Drilling or HDD is a controllable trenchless method of laying underground pipelines like water, sewer, drainage, oil, gas, cables under road, bridges, landscape, river, metro etc. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161 19. This set a new world record for the largest diameter performed by the HDD method. The second stage is to enlarge the drilled pilot hole. b) The utility contractor shall furnish all labor, materials, equipment, and incidentals This approach provides a flexible way of installing pipes and cables where conventional open cut methods are not permitted, practical, or environmentally or economically viable. HDD Method Statement. HDD and Project Location. Horizontal directional drilling is a guided trenchless method of installing utility and ductings under roads, water courses and environmentally sensitive areas, this advanced solution eliminates the need for open cut trenching and in many places also for road closures, which makes it an even more environmentally friendly and less disruptive alternative to your installation. At ClearPath Utility Solutions, we handle a wide variety of horizontal directional boring projects and are committed to providing the best quality for each one of them. Over the last two decades, contractors have increasingly turned to a method called horizontal directional drilling (HDD). Horizontal Directional Drillings sub-contractor, Horizontal Directional Drilling only possible thru rock or hard strata (N-SPT>50) as per HDD sub-contractor. In this topic the method statement Horizontal Directional Drilling, our discussion about how we can make tunnels to pass the 11KV electricity cables to an island from underwater without affecting the traffic and without affecting the underwater environment, for that using perform the Horizontal Directional Drilling.read more The term applies to a crossing in which a pilot bore is drilled, and then enlarged to the size required to accommodate the product pipe. b. Horizontal and vertical location requirements and clearances. Railroad Crossings - Because railroad tracks sustain a great deal of weight, standards are rigid when pipeline crossings are proposed. Directional drilling (or slant drilling) is the practice of drilling non-vertical bores.It can be broken down into four main groups: oilfield directional drilling, utility installation directional drilling (horizontal directional drilling), directional boring, and surface in seam (SIS), which horizontally intersects a vertical bore target to extract coal bed methane Horizontal Directional Drilling (HDD) is a construction technique whereby Directional Boring, often undifferentiated from Horizontal Directional Drilling (HDD), is a minimal impact trenchless method of installing underground pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground bore path by using a surface-launched drilling rig TNB Guideline To follow TNB Guidelines on the procedure of in-stalling ducts by Horizontal Directional Drilling (HDD) method for underground cable installation. Horizontal Directional Drilling Hydrotech Engineering are one of the pioneers of Horizontal Directional Drilling (HDD) in the U.A.E. TECHNICAL SPECIFICATIONS FOR HORIZONTAL DIRECTIONAL DRILLING I. Published by John English December 1, 2015 View Profile. 2.0 SITE SET UP . Security Classif. One such method is the directional core drilling method that will be discussed in this section. a- The Horizontal Directional Drilling (HDD) WORKS. method statement of horizontal directional drilling : hdd-01 : 00 : 1 2557 2 6 c. Industry codes and other government regulations or provisions. The horizontal drilling industry Page 8/18 Properly configured Grundoram pipe rammers can be used to salvage product pipe after a failed bore, remove stuck drill stems and assist drills during product pullback, preventing hydrolock. Thus, all excavation pits shall be carried out down to at least 0.5m below the invert level of the lowest HDD bore. Directional drilling is the choice of installing it. TT Technologies has developed several pipe ramming techniques to help prevent and salvage failed directional drilling bores. 3. d. Preservation and restoration of highway facilities, appurtenances, natural In a normal directional wellbore, Read More . Stage 3 Pullback Operations. Comparing HDD Steering Methods. Its primary application is in developed areas where surface disruption is a consideration, not only because of cost but also because of traffic flow, customer satisfaction and environmental friendly. If the Horizontal directional drilling (HDD) shall be defined as a trenchless construction method for installing pipelines which incorporates the following features: Pilot hole is drilled along the design alignments using a steerable and trackable Directional borings are fast and have the least environmental impact of any alternate method.