Back to Webinars
webinars detail page

HDD for Pipelines – Engineering Applications for Feasibility, Design and Stress Analysis

The Horizontal Directional Drilling webinar is offered as a thirteen-hour webinar that covers Horizontal Directional Drilling (HDD) feasibility analysis and design.

Visit Website


The Horizontal Directional Drilling webinar is offered as a thirteen-hour webinar that covers Horizontal Directional Drilling (HDD) feasibility analysis and design. This webinar provides technical information on HDD equipment, design, product pipe stress analysis, and construction techniques. The course is geared to provide the student with a thorough knowledge of the HDD basics and transition to an in-depth overview of HDD feasibility and design. A key aspect of HDD design is determining if crossing an obstacle by HDD is technically feasible. That is, can the proposed crossing be installed using today’s tools and techniques? Technical feasibility is demonstrated primarily by comparing the proposed crossing with previously completed installations.

There are many factors to consider when evaluating the technical feasibility of an HDD project. Conducting a site survey, usually, the first step is important for all HDD projects and is a significant part of the HDD site characterization. The site survey should include both surface and some level of subsurface investigations. This webinar will cover the basic tasks from a site survey. We will discuss information related to the surface and subsurface feasibility concerns. We will discuss how existing features, both natural and man-made, can impact the way an HDD crossing is configured. We will discuss how the subsurface conditions can impact the various phases of the HDD construction. We will look at the key characteristics such as earth material types, stratification, and groundwater conditions. Also included are the various aspects of the site’s surface such as the topographic/hydrographic relief and the presence of human activities.

Due to an increasing focus on minimizing environmental impact, it has become standard practice in the HDD industry to evaluate the potential for drilling fluid to inadvertently flow to the surface due to hydrofracture. We discuss methods for evaluating the risk of inadvertent returns due to hydrofracture by comparing the confining capacity of the soils overlying the drilled path to the annular pressure necessary to conduct HDD operations. The course focus will be on HDD with steel and plastic pipelines. The webinar includes design calculations with examples.

We will also include demonstrations of the applicable HDD PowerTool (HDDPT) Modules.

PDH Certificate included upon successful completion

Course Outline

Day 1:

  • HDD Basics
  • HDD Equipment & Tracking
  • Subsurface Conditions
  • Borehole Stability
  • HDD Feasibility

Day 2:

  • HDD Design
  • Steel Pipe Stress Analysis
  • Plastic Pipe Stress

01. Link to Access Course on March 7-8, 2023

Please click on this link and register for GoToWebinar at least 24 hours prior to the start of the class. Thank You!

Please complete this form from GoTo Webinar to access the course.

02. Course Materials

These are the course materials for this class. You can download them prior to class. They are also available on GoToWebinar.

Link to additional materials

David Willoughby

HDD and Cathodic Protection Design SME, Former Director RK&K, 


David Willoughby has 40 years of experience in engineering, pipeline design, corrosion control, and management in the petroleum and utilities pipeline industry. His experience includes gas transmission and distribution systems, petroleum facilities, and water/sewer pipelines from conception through design, construction and testing, economic evaluation, and project field supervision. Mr. Willoughby has been responsible for the design, permitting, inspection, and construction administration of numerous horizontal directional drills (HDD) on pipeline projects. He is the author of several articles and two books published by McGraw-Hill, The Plastic Piping Handbook (2002) and Horizontal Directional Drilling (2005).

Mr. Willoughby provides HDD training to the pipeline and utility industries. He has presented at the engineering workshop at N.C. Utilities Commission Office of the Pipeline Safety Conference and the Southern Gas Association Annual Conference. Mr. Willoughby’s HDD training is used to provide Professional Development Hours (PDU) for professional engineers in many states, including Texas.

About Technical Toolboxes


 Covering topics such as the effects of aging, coatings, coverings , corrosion and standards for material requirements, our courses are designed to help you understand the implications of pipeline materials in the design and construction of your next project.


Pipeline Welding is critical in oil and gas operations in terms of maintenance of existing pipelines and construction of new projects.  Our welding experts will walk you through the essentials welding methods using various welding processes. 


Our experts will help you navigate the considerations of crossings analysis: productivity, accuracy, safety, compliance and collaboration. 


Maintaining Pipelines integrity helps keep pipelines safe for use. Our SMEs discuss various topics related to integrity.


Our corrosion experts help you protect your pipes from the dangers of corrosion, identify the causes and types of corrosion, as well as address ways to mitigate the effects of corrosion.


Understanding pressures and flow rates are vital in helping establishing efficiency in pipelines.  Our experts will help you understand how to analyze the hydraulics for your next pipeline project. 

Our Vision

Our vision is to create a better everyday life for many people and bring inspiration and innovation to everyone

We share our passion for sharing knowledge with students from all walks of life. All our courses are planned, recorded and edited based on 3 core principles:

  • Our online courses start with a thorough explanation of the topic covered.
  • Our unique 3-part layout provides the best visual quality on the web.
  • All our lessons are applied to common industry practises so that you understand how to use the theory in a practical context.
Tree PNG back


Tree PNG back




Tree PNG back


Application Notes


onestop ndt application

NDT Trends #83 is out!!
Grab your FREE copy now.