industry groups and government entities on how to implement HDD projects. The practical application of the proposed model for the MINI, MIDI and MAXI HDD projects was shown on four examples. Horizontal directional drilling (HDD) is a trenchless construction process for. As depicted in this video, and as most directional drilling projects, very little of the normal city activities were interrupted during the conduit installation. Applying the fuzzy set theory in the proposed model made it possible to decrease the uncertainty, the lack of precision and the difficulties with gaining the crisp values of the basic events probability, which occur in the conventional Fault Tree Analysis. Consult our service area map below to see where we have already completed projects over the years.

The unwanted events were divided into 4 classes: problems with the ground, machines, environment and management. The risk assessment was carried out applying the Fuzzy Fault Tree Analysis. Directional drilling is a complex process that requires careful planning and execution.

With our acquisition by Ellingson Companies in 2019, DTD expanded our personnel and equipment. Our company has focused on environmental applications of horizontal directional drilling since its inception in 1996 as Directed Technologies Drilling, Inc. The objective of this work was to develop a new mathematical model for the qualitative and quantitative risk assessment of HDD projects of various sizes (MINI, MIDI and MAXI), which allows to consider the installation specificity (the optional possibility of applying various tools and machines). Ellingson-DTD is the nation’s leading contractor for horizontal remediation well systems. Vacuum excavators can perform soft excavation (removing dirt, sand, mud, and clay), which can help you visually locate underground lines by exposing them to daylight or via potholing. There were very specific requirements for the pipeline for this project, as it needed to be a high quality, robust solution able to withstand the rigours of.

It is also a starting point for introducing the risk management strategy which aims to reduce the number of installation failures and their negative consequences. One of the best tools you can use during a horizontal directional drilling project is the vacuum excavator. The risk level of the HDD project is a key parameter when assessing the project feasibility and making the project pricing. Directional drilling is a steerable trenchless method where we install conduits, underground pipes, or cables in a shallow arc along a predefined bore path by.

Directional drilling projects