Archive · 23 Jan 2026
NRL Completes Longest HDD Pipeline Crossing in Jorhat
Numaligarh Refinery Limited (NRL) has successfully laid a very long pipeline under the Brahmaputra river in Assam.
This pipeline is part of a bigger project to connect Paradip in Odisha to Numaligarh in Assam, which will help transport crude oil.
The pipeline is 4,058 metres long and is one of the longest of its kind in the world.
The project started in December 2022 and has passed through five states and many rivers and roads.
The work was completed by a new contractor after the initial one failed.
The pipeline will help supply more crude oil to the refinery, which has increased its capacity.
NRL completed a 4,058-metre HDD pipeline crossing under the Brahmaputra river in Jorhat.
The pipeline is part of the Paradip-Numaligarh crude oil pipeline project, connecting Paradip in Odisha to Numaligarh in Assam.
The project involves laying a 1,635-km pipeline passing through five states and numerous rivers and water bodies.
The crossing was completed by M/s Trenchless Engineering Services Pvt. Ltd. after the initial contractor failed.
The pipeline has undergone 38 river crossings and will pass through 10 tunnels, with eight already completed.
- Who
- Numaligarh Refinery Limited (NRL)
- What
- Completed a 4,058-metre horizontal directional drilling (HDD) pipeline crossing under the Brahmaputra river
- When
- Completed a few days ago (exact date not specified)
- Where
- Jorhat district, Assam, India
- Why
- Part of the Paradip-Numaligarh crude oil pipeline project to supply crude oil to NRL after its capacity was enhanced
- Pipeline Length
- 4,058 metres
- River
- Brahmaputra
- Project
- Paradip-Numaligarh crude oil pipeline
- Total Pipeline Length
- 1,635 km
- States Covered
- Odisha, West Bengal, Bihar, Jharkhand, Assam
- River Crossings
- 38
- Tunnels
- 10 (8 completed)
- Water Bodies Crossed
- 90