Every concept visualized through powerful drilling animations, vivid graphics, and detailed explanations. The construction works of this section involve the installation of twin 600mminternal diameter high density polyethylene hdpe of 1. The emphasis is on the theory behind these drilling elements in order to develop a greater understanding of the principles involved in drilling a. Horizontal directional drilling hdd is considered as the most applicable and cost effective technology among trenchless technologies known.
The objective of this publication is to provide contractors, engineers, and utility owners with information that will assist with the completion. Construction crews may also reduce noise by using structures on the drill site that are designed to buffer. The mathematics of directional drilling bit by bit with workings curriculum for excellence. Drilling process control is very important when drilling the pilot bore. Directional drilling dd1 iadc drilling manual evolution of directional drilling since 1900 directional drilling is the science of controlling or correcting a wellbore, along a predetermined trajectory, to one or more underground targets or locations at given horizontal dis placements hd and true vertical depths tvd from the point of origin. Inaccurate pilot bore drilling can cost a contractor dearly, due to the necessity to rapidly eliminate the consequences of an accident. Pdf file of the deviated drilling plan the planned directional coordinate data and two 2 wellbore deviation plots, one depicting the plan view and one depicting the side view of the proposed wellbore b. Pdf pipeline shore approach installation by horizontal. Pdf horizontal directional drilling hdd was pioneered in the united states for an innovative road boring contractor who successfully completed a 183. Introduction to directional and horizontal drilling jim short. An essential resource for anyone working in the trenchless industry, this authoritative guide provides complete technical information on the design, permitting, construction bid documents, specifications, and construction of hdd applications. Build up a vertical section is drilled, then, starting at the kick off point, the angle of incidence to the vertical is. Horizontal directional drilling 421 chapter 12 horizontal directional drilling introduction the horizontal directional drilling hdd industry has experienced so much growth in the past two decades that hdd has become commonplace as a method of installation. Schlumberger introduction to directional drilling by victor.
Introduction to directional and horizontal drilling pdf. Wear appropriate personal protective equipment ppe as required by the task being. This construction method involves the controlled directional drilling of a pilot borehole, back reaminghole, enlargement and pull back of the specified sewer pipe to line and grade as shown on the drawings. Get introduction to directional drilling pdf by schlumburger free download right now from our website. Introduction to directional drilling this post contains material from dhd directional, horizontal, and multilateral drilling and bdtbasic drilling technology. Drilling equipment creates noise during operations. Drilling of a relief well right to killa blowout well visible. Comprehensive coverage of horizontal directional drilling hdd technologies and applications. Development of a standard specification for horizontal. Drilling engineers, drilling supervisors, trainee directional drillers personnel with basic drilling engineering skills. Electrical safety trailing earth leads shall be provided by ergon energy and shall be bonded to excavation plant.
A well may be produced temporarily to establish the. Method pertaining to directional drilling method the initial drill out is carried out using highpressure water through drill rods. Horizontal directional drilling hdd technique for undersea. The most obvious signs of a fracout are the visible pooling of drilling mud on the surface, a sudden decease in mud volume returns during drilling operations, or loss in drilling mud pump pressure. Nastts horizontal directional drilling hdd good practices. Introduction to directional drilling pdf by schlumburger free. 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. This 1 hour long course includes modules focused on an introduction to oil and gas, fundamental drilling equipment, and the mud circulation system. Agree the well objectives, schedule, costs, order equipment, place contracts for the rig and services, prepare the site. A particular glaring example of this has been in the field of directional drilling where a large literature gap has existed for many years. Horizontal directional drilling best practices for operators pre. Quite often, special logging tools are required in locating the blowout well.
Hdd can be applied in different soil conditions, for deep laying of different pipeline diameter and long drives. Directional control in this type of drilling is stringent due to the extreme accuracy required to locate and intersect the blowout well. Specialized construction for large waterways and sensitive areas. This horizontal directional drilling hdd good practices guidelines, fourth edition is presented by the north american society for trenchless technology nastt, a nonprofit educational organization. Drilling engineering a distributed learning course forward the drilling engineering workbook is a correspondence distributed learning course which covers the important elements of drilling a well. Trenchless information education center horizontal directional drilling.
Purposes of directional drilling drilling engineering. Toro downhole tools toro has taken every precaution as to the accuracy of the content and data presented herein, toro makes no. Hdd pilot hole operations are not unlike those involved in drilling a directional oil well. Directional drilling or slant drilling is the practice of drilling nonvertical wells.
Definition z the science of directing a well bore along a predetermined trajectory to intersect a designated subsurface target. Drilling the operator should read, understand, and follow the operators manual. Schlumberger introduction to directional drilling by. Horizontal directional drilling archives trenchless technology. Introduction to directional drilling 2239quartz school. Introduction to directional and horizontal drilling j. Directional drilling procedure overview the installation of underground services by direction drilling is often faster and more economical than traditional open trenching techniques but it does come with some unique risks that must be addressed to work safely. In this section we look at the various items of equipment and tool systems which are available to us for directional drilling purposes. The disadvantage of directional drilling is that the equipment is of high cost 25 26.
Guidance note horizontal underground directional drilling 6 p a g e regulation 3. Take this free, animated course to learn the fundamentals of drilling. Please read our short guide how to send a book to kindle. An introductory text on directional and horizontal drilling and related activities. Prior ex posure to directional drilling is recommended. Cyclic productivity for horizontal directional drilling hdd. Prior to beginning work, the contractor must submit to the. Introduction to directional drilling 2339quartz school.
In this section ill discuss about one of the most important term related to directional drilling dog leg severity, abbrivia. It is intended to be an aid to the operator and is provided for information and illustration purposes only. Pipeline shore approach installation by horizontal directional drilling conference paper pdf available june 20 with 3,586 reads how we measure reads. Opcs 15 lenape avenue, rockaway, nj 078661019 for the plastics pipe institute. Directional drilling the majority of wells drilled today are directional and directional drilling is a fascinating subject area. Larry slavin member of the hdpe municipal advisory board outside plant consulting services, inc. A this drilling motor handbook is for informational purposes only. Identify descriptions and pictures of directional drilling applications. Electronic submittal of directional drilling information.
Thus, public safety and ensuring the protection of the underground infrastructure are. The drilling process utilizes drill pipes, drill bits and reamers in. Horizontal directional drilling pilot bore simulation. Specialized construction for large waterways and sensitive. Sufficient depth can be accomplished to avoid other. The well is created by drilling a hole, isolating with casing and cement and repeating this process until the target depth and location are reached. Same as drilling directional oil well starts verticalends horizontal. Pdf introduction to directional and horizontal drilling jim short. An introduction to directional drilling oil well nature scribd.
Therefore, enbridge will, when possible, restrict drilling activity to daylight hours if the equipment is close to occupied buildings or homes. Good mathematic skills are necessary, particularly trigonometry. Locations the relative locations of the target and relief wells are calculated. The mathematics of directional drilling bit by bit 0m sea relief targetbed kick off point end of build first bit. Pipeline design for installation by horizontal directional drilling addresses the design of major pipeline or duct segments to be installed by horizontal directional drilling hdd. Specification for horizontal directional drilling check this is the latest version before use. Directional drilling fundamentals introduction to directional. Directional drilling and spontaneous deviation before describing in full detail the engineering aspects connected to directional and horizontal drilling, it is necessary to consider some of the volume i exploration, production and transport 339 directional drilling fig. The multistage 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. Long and complicated crossings can be accomplished with a great degree of accuracy. Pilot hole directional drilling pilot hole directional control is achieved by using a nonrotating drill string with an asymmetrical leading edge.
The operator should become familiar with the work area. Hdd is a trenchless excavation method that is accomplished in three phases and uses a specialized horizontal drilling rig with ancillary tools and equipment. The ohio horizontal directional drilling specification committee ohddsc represented various stakeholders from the horizontal directional drilling community and the dedication of their time and expertise is deeply appreciated. Horizontal directional drilling hdd, with origins in the oil and gas industry, is a trenchless technology employed to install underground pipelines with minimal impacts on the environment or damage to existing infrastructure such as roadways and other surface structures. The asymmetry of the leading edge creates a steering bias while the nonrotating aspect of the drill string allows the steering bias to be held in a specific position while drilling. The components of a horizontal drilling rig used for pipeline construction are similar to those of an oil well drilling rig with the major exception being that a horizontal drilling rig is equipped with an inclined ramp as opposed to a vertical mast. Horizontal directional drilling trenchless information center. Advantages the major advantage is the speed of installation combined with the minimum environmental and social impact. The surface location is scouted to determine the best site that will allow for any natural drift, provide suitable access for drilling rig, service rig, production facilities and can be constructed for a reasonable cost. An introduction to directional drilling free download as pdf file. Horizontal directional drilling best practices for. Directional wells drilled at inclination angle of 60 advantages of highly deviated wells. Directional data requirements for forms 2, 4, and 5 for directional wells 1 application for permit to drill, form 2 a.
The tools and techniques used in the horizontal directional drilling hdd process are an outgrowth of the oil well drilling. Pipeline design for installation by horizontal directional. Guidelines for use of minihorizontal directional drilling for placement of high density polyethylene pipe tr46 2009 prepared by. Basic drilling engineering and 1 3 years wellsite experience. Horizontal directional drilling plan february 29, 2012. Page 5 of 6 specification rsc09 ver 2 ergon energy corporation limited abn 50 087 646 062 16. One source reported that the number of units in use increased by more than a hundred. The hdd equipment arrives on site aboard multiple trucks. Alvarez well bore deviation with rotary steering systems last generation of dd tools developed in late 90s and 00s 23. Hdd is a surfacelaunched drilling technique using bentonite slurry to support the drilled hole. View directional drilling research papers on academia. Pdf introduction to directional and horizontal drilling. A bank, whose name is being kept confidential in the interest of bank. Introduction to directional drilling this post contains material from dhddirectional, horizontal, and multilateral drilling and bdtbasic drilling technology.
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