Horizontal Directional Drilling (HDD)
Horizontal Directional Drilling (HDD), also known as directional drilling or directional boring is a process used to install sub surface conduits and pipes from a surface positioned drill rig. This allows for very little disruption at the surface as well as along the predetermined bore path. Bore lengths can be over a mile long with diameters up to 60".
Directional Drilling is commonly used on jobs that need to cross roadways, waterways, highly congested work areas, and environmentally sensitive areas.
Use of HDD has continued to grow as property owners and construction
firms learn of the great advantages that HDD provides.
HDD is used in place of other techniques for the following reasons:
- Less traffic disruption
- Lower cost
- Deeper installation possible
- Longer installation possible
- No access pit required
- Shorter completion times
- Directional capabilities
- Safer for the environment