Horizontal Directional Drilling, Tru-Line Civil, Akaroa, documentary, photography, Akaroa Water Supply Stage 3, Reticulation Upgrade, Vermeer HDD,

Attaching the 120m long pipeline to the back reamer. The pipe is 180mm Ø the back reamer is 250mm Ø. The additional 35mm cut around the outside of the pipeline lubricates the borehole with the slurry of cuttings and drilling fluid suspending the pipeline and allowing room for the cuttings to flow out of the borehole down the sides of the pipeline into the terminal trench and into pressure relief wells excavated in alignment with the borehole.


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s