The drilling machine operator controls drilling activities from here. The Cabin is placed almost immediately beside the drill rig. Within the rig assembly is a component attached to the drill pipes, this component performs rotational motion during drilling activities.įigure 3: Rotating Component of a Drilling Rig 3.3 Control Cabin/Room The rig is equipped with a power unit that drives a travel mechanism back and forth on a structural framework. It is positioned on a flat surface and may be appropriately anchored to the ground to ensure the machine stays in position during drilling and pipeline pulling operations. This is the major equipment of a typical horizontal directional drilling setup. Horizontal directional drilling is a trenchless method of installing pipelines underground below identified features (obstacles) without disruption to any of the identified features 3.2 Drill Rig In this section, I have defined/explained the meaning of some of the terms used in HDD 3.1 Horizontal Direction Drilling 3 TERMS USED IN HORIZONTAL DIRECTIONAL DRILLING This method requires high drilling precision to ensure that the pilot hole intersects at the designed point. HDD has been utilised for crossing length of over 1km utilising one rig however, the advent of drill and intersect method has led to the successful execution of crossing length longer than 2km.ĭrill and Intersect method entail drilling the pilot hole from each side of the proposed drill path and intersecting the two pilot holes. However, there has been significant improvement in technology, which has led to the successful crossing of large water bodies and greater depth. It entails drilling a hole at a specified depth below the features (obstacles) and pulling in the pipeline into the drilled hole.Ĭrossing length is dependent on the drilling rig capacity. Horizontal directional drilling is a trenchless method of installing a pipeline underground below identified features (obstacles) without disruption to any of the identified features. Horizontal Directional Drilling application has expanded to cover shore crossing for pipeline transiting from offshore to onshore. Horizontal directional drilling (HDD) is one of the most suitable means of crossing such obstacles. Therefore, it is imperative to select an appropriate crossing method during the design phase of the project. They require special crossing technology when an open cut cannot be performed. These obstacles include roads, railways, water bodies, sensitive areas, buried pipelines, and cables. Various features (obstacles) are encountered during pipeline installation. 7 PROJECT EXPERIENCE: pipeline bundle installationįigure 1: Horizontal Drilling Machine 2 INTRODUCTION to Horizontal Directional Drilling.6.4 Pipe Pullback (Pipeline Installation).6 HOW DOES HORIZONTAL DIRECTIONAL DRILLING WORKS.5 Horizontal Directional Drilling: INSPECTION AND TESTING.4.1.2 Surface and Topographical Surface.4 Horizontal Directional Drilling: PREDESIGN AND DESIGN ACTIVITIES.3 TERMS USED IN HORIZONTAL DIRECTIONAL DRILLING.2 INTRODUCTION to Horizontal Directional Drilling.1 OVERVIEW: Horizontal Directional Drilling.Complete supporting drilling tools, using φ83×3000mm drill pipe, and can be customized according to user requirements. The track adopts steel track and rubber shoes, which can bear high load and walk on various roads. The mud pump is in the form of hydraulic drive and mechanical variable speed, which can flexibly adjust the pressure and pump volume. The push-pull of the power head is driven by a four-motor equipped with a reducer, a rack and pinion transmission, good stability and high efficiency. The power head is rotated by four motors, with large torque and two-step stepless speed regulation function. With the use of internationally advanced control technology, it is not only more suitable for urban construction, but also minimizes the power consumption of the rig under no-load conditions. Cummins EFI diesel engine features low emission and low noise. The main supporting parts are well-known products at home and abroad. It uses wired remote control for walking. The rig adopts the design concept of short mast, which is light in weight and comfortable to operate. It can ensure that the drilling rig is convenient to prepare the drill within the full drilling angle range, the drilling rig has good stability, and the overall shape is beautiful. The main machine adopts steel tracks and rubber shoes, which is convenient for walking on all kinds of roads. The main hydraulic components, engine and mud pump are selected from domestic and foreign famous brand products. Main technical features: TYZ-45 type trenchless directional drilling rig has advanced and simple structure, high efficiency and low oil temperature. TYZ-45 Horizontal Directional Drilling Rig
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