Build up a vertical section is drilled, then, starting at the kick off point, the angle of incidence to the vertical is. Directional drilling is a fairly new concept when putting pipe in the ground. 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. The construction works of this section involve the installation of twin 600mminternal diameter high density polyethylene hdpe of 1. This plan must also include a detailed description as to contingencies for potential fissures of drilling fluid. Calculating the pull loads horizontal directional drilling. Apr 16, 2020 the first step in calculating the estimated pulling loads is to develop the input data that will be used in the calculations. In fact, even in a vertical well, it might be necessary to deviate to avoid a geological formation or a previous stuck pipe, then return to the original path. This would therefore help to minimize risk and uncertainty surrounding hitting predetermined target. Calculation equations for directional drilling free download as powerpoint presentation. Drilling software download free trials and try before you buy. Horizontal directional drilling hdd technique for undersea.
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. Drilling calculator, calculate all your drilling numerical with least effort and most accuracy. Horizontal directional drilling hdd is a steerable trenchless method of installing underground pipes, conduits and cables in a shallow. Interests in controlled directional drilling began about 1929 after new and rather accurate means of measuring hole angle was introduced during the development of seminole, oklahoma field. Sin opp cos adj tan opp hyp opp hyp adj hyp hyp adj sin cos opp sin x hyp adj cos x hyp circles. Horizontal directional drilling hdd was pioneered in the united states for an innovative road boring contractor who successfully completed a 183 m river crossing using a modified rod pushing a. Today, hdd is a recognized and often preferred method for installing all types of underground utilities such as water, sewer, gas, electric, and telephone.
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. Course length degrees x 100 bur projecting to bit in curve present angle previous angle. Directional survey calculations last updated on tue, 17 sep 2019 formulas and calculations the following are the two most commonly used methods to calculate directional surveys. Nov 05, 2014 download drilling calculator for free. At one time, it was assumed all oil wells were essentially vertical or the bottom of the hole was directly under the drilling rig. Hdd pilot hole operations are not unlike those involved in drilling a directional oil well. Larry wolfson larry wolfson has 34 years experience in planning and supervising well construction, including erd, slimhole and subsea wells. A drilling technique in which a well is bored at multiple angles.
Locations the relative locations of the target and relief wells are calculated. Directional drilling or slant drilling is the practice of drilling nonvertical wells. The intent is to provide basic equations and formulas with the calculations for downhole drilling. Formulas and calculations for drilling, production, and. Technical knowledge of the pilot hole curvature, reamer size, drilling fluid viscosity and the workspace needed is paramount when working on an hdd project.
An example of the input data required for calculating estimated pulling loads is. The directional drilling survey provides the control of directional drilling of oil wells with calculations and plotting of well planning and survey data in vertical section, plan and xyz views, calculations between two survey stations, easy tools to 2d and 3d wells and plot multilateral wells. Directional drilling formulas software free download. Formulas and calculations 6 convert pressure, psi, into mud weight, ppg using meters as the unit of measure mud weight, ppg pressure, psi. To measure the inclination and azimuth at the bottom of the hole and hence determine where the well is heading. Horizontal directional drilling specialized construction for large waterways and sensitive areas what is horizontal directional drilling. The trenchless technique horizontal directional drilling. Drilling software download free trial downloads try before. Hdd plan is a userfriendly borehole design interface for the unique requirements of the hdd horizontal directional drilling, industry to plan drilling boreholes starting and ending at any inclination and with multiple tangent and curve bend sections. Horizontal directional drilling hdd is a construction technique whereby a tunnel is drilled under a waterway or other designated area, and a pipeline or other utility is pulled through the drilled. Specialized construction for large waterways and sensitive areas. This book may be a tutorial guide for students, to lecturers and teachers it may be a solution manual, and drilling engineers may find that it is a source for solving problems.
Method pertaining to directional drilling method the initial drill out is carried out using highpressure water through drill rods. Surveys are recorded at regular intervals while drilling. Horizontal directional drilling plan february 29, 2012. The emphasis is on the theory behind these drilling elements in order to develop a greater understanding of the principles involved in drilling a well. Horizontal directional drilling and boring 02415 2 b.
This data includes the productpipe material properties, the drilling fluid properties, and any code or design factors that are applicable. This film shows how horizontal directional drilling works with hddrigs by prime drilling. Drilling of a relief well right to killa blowout well visible. The hdd equipment arrives on site aboard multiple trucks. Pdf formulas and calculations for drilling production. Horizontal directional drilling horizontal directional drilling has been used on a large scale since the eighties. Directional, horizontal, and multilateral drilling dhd mr. On land there may be cities, towns or lakes to avoid. Since the seventies deltares has been involved in the development and execution of trenchless technologies. Many times, a nonvertical well is drilled by simply pointing the drill in the direction it needs to drill. 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.
Directional, horizontal, and multilateral drilling petroskills. Same as drilling directional oil well starts verticalends horizontal. Basics of horizontal directional drilling during the past six years, horizontal directional drilling hdd has revolutionized the underground utility installation industry. Determine the length of pipe needed to perform a directional drill. Sep 25, 2015 surveying is an inseparable part of directional drilling. The mathematics of directional drilling bit by bit freely reproducible for classroom use only introduction there are many reasons why it may not be possible or desirable to drill a vertical well. Sep 17, 2019 directional survey calculations last updated on tue, 17 sep 2019 formulas and calculations the following are the two most commonly used methods to calculate directional surveys. The mathematics of directional drilling bit by bit 0m sea relief targetbed kick off point end of build first bit. 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. 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. Formulas and calculations for drilling, production, and workover. To allow accurate determination of well coordinates at a series of measured depths and determine the current location. All the formulas you need to solve drilling and production problems lyons, william c.
The emphasis is on the theory behind these drilling elements in order to develop a greater understanding of the principles involved in drilling a. Directional drilling most often refers to drilling at nonvertical angles, including horizontally. Formulas and calculations for drilling production and workover 2e. Specification for horizontal directional drilling page 2 of 6 specification rsc09 ver 2 ergon energy corporation limited abn 50 087 646 062 6. Directional drilling formulas software mitcalc technical formulas v. Years of research have resulted in one of the first design codes for horizontal directional drilling, as well as a. A more complex way of directional drilling utilizes a bend near the bit, as well as a. The mathematics of directional drilling bit by bit with workings curriculum for excellence. 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. This is possible because deviations can easily be detected and the necessary directional. Prime drilling horizontal directional drilling explained.