Horizontal Directional Drilling

This trenchless method of installing pipe and other utilities underground uses a surface launched drilling rig. It causes little impact on the surrounding area and is used in situations when trenching or excavating is impossible or impractical.



Pipe Ramming: 5 Methods Used in Horizontal Directional Drilling Pipe Ramming: 5 Methods Used in Horizontal Directional Drilling Pipe Ramming: 5 Methods Used in Horizontal Directional Drilling Pipe Ramming: 5 Methods Used in Horizontal Directional Drilling


Pipe ramming techniques for use during horizontal directional drilling include pullback assist and bore salvage, ending the need for...

NASTT Executive Director Michael Willmets On the Success of NASTT's Annual No-Dig Show NASTT Executive Director Michael Willmets On the Success of NASTT's Annual No-Dig Show NASTT Executive Director Michael Willmets On the Success of NASTT's Annual No-Dig Show NASTT Executive Director Michael Willmets On the Success of NASTT's Annual No-Dig Show


The annual NASTT No-Dig Show is highly regarded as one of the best events for trenchless technology, and trenchless professionals look...

An In-Depth Look at the Role of Drilling Fluid Systems in Trenchless Construction An In-Depth Look at the Role of Drilling Fluid Systems in Trenchless Construction An In-Depth Look at the Role of Drilling Fluid Systems in Trenchless Construction An In-Depth Look at the Role of Drilling Fluid Systems in Trenchless Construction


Drilling fluid selection and management should start even before bidding on a job, as the quality of drilling mud can be the difference...

Understanding Drilling Fluids Solids Control with Horizontal Directional Drilling Rigs Understanding Drilling Fluids Solids Control with Horizontal Directional Drilling Rigs Understanding Drilling Fluids Solids Control with Horizontal Directional Drilling Rigs Understanding Drilling Fluids Solids Control with Horizontal Directional Drilling Rigs


Horizontal directional drilling fluid poses environmental problems if not disposed of properly. However, through the use of solids control...

Mixing the Mud: The Science of Drilling Fluid in HDD Mixing the Mud: The Science of Drilling Fluid in HDD Mixing the Mud: The Science of Drilling Fluid in HDD Mixing the Mud: The Science of Drilling Fluid in HDD


Drilling fluid is the life fluid of a trenchless project; it can literally make or break a borehole. Therefore, managing and selecting the...

Carrying Out In-Situ Stress Measurements: Hydraulic Fracturing Vs. Overcoring Methods Carrying Out In-Situ Stress Measurements: Hydraulic Fracturing Vs. Overcoring Methods Carrying Out In-Situ Stress Measurements: Hydraulic Fracturing Vs. Overcoring Methods Carrying Out In-Situ Stress Measurements: Hydraulic Fracturing Vs. Overcoring Methods


Carrying out in-situ stress measurements can be accomplished by using either hydraulic fracturing or overcoring methods. Both offer a...

Trenchless Industry Experts Share What Innovations They See on the Horizon in 2019 Trenchless Industry Experts Share What Innovations They See on the Horizon in 2019 Trenchless Industry Experts Share What Innovations They See on the Horizon in 2019 Trenchless Industry Experts Share What Innovations They See on the Horizon in 2019


We went to NASTT’s No-Dig Show 2019 to seek out trenchless engineers and underground infrastructure professionals to find out what new...

Understanding Key Laboratory Testing Methods for Site Investigation Understanding Key Laboratory Testing Methods for Site Investigation Understanding Key Laboratory Testing Methods for Site Investigation Understanding Key Laboratory Testing Methods for Site Investigation


Soil investigation, both intrusive and laboratory testing, can be a life-saver in terms of cost and time. These tests help the contractor...

What Lies Beneath: The Top 3 Intrusive Site Investigation Methods What Lies Beneath: The Top 3 Intrusive Site Investigation Methods What Lies Beneath: The Top 3 Intrusive Site Investigation Methods What Lies Beneath: The Top 3 Intrusive Site Investigation Methods


Intrusive site investigations provide a firsthand look at what's beneath the surface, and using these methods, one can gather information...

The Importance of Continuing Education for Trenchless Professionals The Importance of Continuing Education for Trenchless Professionals The Importance of Continuing Education for Trenchless Professionals The Importance of Continuing Education for Trenchless Professionals


Continuing education is a necessary part of keeping abreast of all the new technologies and procedures affecting the trenchless industry....

Slurry Pump Capacity & Flow Rates Explained: Sizing Slurry Pump Capacity to Match Project Conditions Slurry Pump Capacity & Flow Rates Explained: Sizing Slurry Pump Capacity to Match Project Conditions Slurry Pump Capacity & Flow Rates Explained: Sizing Slurry Pump Capacity to Match Project Conditions Slurry Pump Capacity & Flow Rates Explained: Sizing Slurry Pump Capacity to Match Project Conditions


Sizing a slurry pump correctly is a critical part of the pump selection process. This ensures that it will operate within its design...

Understanding the 4 Stages of Site Investigation Understanding the 4 Stages of Site Investigation Understanding the 4 Stages of Site Investigation Understanding the 4 Stages of Site Investigation


Site investigation is an integral part of any construction project, and should be attributed as much significance as any other part of the...

The Direct Pipe Method: Combining the Benefits of HDD and Microtunneling The Direct Pipe Method: Combining the Benefits of HDD and Microtunneling The Direct Pipe Method: Combining the Benefits of HDD and Microtunneling The Direct Pipe Method: Combining the Benefits of HDD and Microtunneling


Direct pipe is a hybrid method incorporating the benefits of HDD and microtunneling, while setting aside tedious, time-consuming processes...

The Importance of Tracer Wire Systems in Trenchless Technology The Importance of Tracer Wire Systems in Trenchless Technology The Importance of Tracer Wire Systems in Trenchless Technology The Importance of Tracer Wire Systems in Trenchless Technology


One way to ensure that pipelines are accurately detected is using tracer wires during installation so that they can be detected at a later...

5 Reasons Why Fracture Mechanics is a Must for Every Drill Station 5 Reasons Why Fracture Mechanics is a Must for Every Drill Station 5 Reasons Why Fracture Mechanics is a Must for Every Drill Station 5 Reasons Why Fracture Mechanics is a Must for Every Drill Station


The mechanics of determining crack propagation is known as fracture mechanics. Using these skills at a drilling station can help mitigate...

A Closer Look Into the Positive and Negative Effects on Trenchless Technology Industry Professionals From Steady HDD Market Growth A Closer Look Into the Positive and Negative Effects on Trenchless Technology Industry Professionals From Steady HDD Market Growth A Closer Look Into the Positive and Negative Effects on Trenchless Technology Industry Professionals From Steady HDD Market Growth A Closer Look Into the Positive and Negative Effects on Trenchless Technology Industry Professionals From Steady HDD Market Growth


The horizontal directional drilling industry (HDD) has seen steady growth over the last few years. Understanding the sectors which use HDD...

Planning a Bore For a Trenchless project? Here Are 5 Important Factors to Consider Planning a Bore For a Trenchless project? Here Are 5 Important Factors to Consider Planning a Bore For a Trenchless project? Here Are 5 Important Factors to Consider Planning a Bore For a Trenchless project? Here Are 5 Important Factors to Consider


Trenchless projects are conducted beneath the surface and rely heavily on previously collected data from municipalities and through soil...

Identifying and Managing Dangers Associated with Subsurface Utilities Identifying and Managing Dangers Associated with Subsurface Utilities Identifying and Managing Dangers Associated with Subsurface Utilities Identifying and Managing Dangers Associated with Subsurface Utilities


The risk associated with digging blindly can be dangerous or even fatal. Knowing the location of utility lines is very important prior to...

Butt Fusion & Polyethylene Pipe: How to Effectively Use This Trenchless Method Butt Fusion & Polyethylene Pipe: How to Effectively Use This Trenchless Method Butt Fusion & Polyethylene Pipe: How to Effectively Use This Trenchless Method Butt Fusion & Polyethylene Pipe: How to Effectively Use This Trenchless Method


Polyethylene pipes are virtually impervious to attack by moisture, water and soil, and are non-conductors of electricity. These are some of...