March 20, 2024: Horizontal Directional Drilling for Pipelines Design Example and Stress Analysis Workshop

  • Author: David Willoughby
  • Level: Advanced
  • Study time: 4 hours
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Course overview

What is the HDD method for pipeline? How big of a pipe can you directional bore?

In the realm of Horizontal Directional Drilling (HDD), a pivotal aspect of design lies in crafting the optimal approach and bore path profile for the crossing. This webinar offers comprehensive training on the selection of the right HDD design approach and the meticulous design of the bore path. Key considerations encompass precision, surface and subsurface conditions, and their implications on HDD design.

Furthermore, the webinar delves into the technical intricacies of product pipe stress analysis, offering insights and practical knowledge. Through engaging design calculations and illustrative examples, participants will gain a profound understanding of this critical aspect.

To provide a holistic perspective, the course culminates in an in-depth exploration of HDD design through a class project, utilizing relevant HDDPT modules. Gain hands-on experience and apply the acquired knowledge to real-world scenarios.


Our live-virtual trainings are conducted in a real-time question and answer classroom format. You may ask questions or comment throughout either verbally or in writing.  

START TIME: 8:30 a.m. (CDT)
END TIME: 12:30 p.m. (CDT)

PDH Certificate included upon successful completion

  • Course Outline

    HDD Design Approach
    • Basic Principles
    • Drilled Path Design
    • Directional Accuracy and Tolerances
    • Multiple Line
  • Surface Conditions
    • Work Area Conditions
  • Subsurface Conditions
    • Soil Performance
  • HDD Stress Analysis for Steel Pipelines
    • Pre-Installation
    • Installation
    • Operating
    • Allowable Stress Limits
    • Perform Class HDD Design Project
    • Demonstration of the Applicable Modules in HDD PowerTool
  • HDD Stress Analysis for Plastic Pipelines
    • Pullback Loads

David Willoughby

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