Bennett Associates

Engineering Design Consultants

RSS feed

Horizontal Directional Drilling

 
   

Bennett Associates has an international reputation for Mechanical and Structural Engineering Design across virtually all disciplines and industries.

A further area of expertise is in the design of horizontal directional drilling rigs. The one pictured opposite, seen here at the 1994 "NO DIG" Exhibition where it was the centre of attraction, was designed for Stockton of Wakefield.

As always Bennett Associates' engineers worked in close conjunction with the Client to ensure their full requirements were met.

The initial brief was to produce a design for a rig which could pull at 100 tonnes and be capable of handling pipelines up to 0.9 metres diameter and 1000 metres in length at depths up to 30 metres.

Horizontal directional drilling is a technique developed from oilfield technology and enables pipelines to be installed beneath canals, rivers, railways, roads and environmentally sensitive areas without the necessity for unsightly and expensive excavating or trenching work.

The rig first drills a pilot hole along the prescribed route. Reaming tools, the size of which are increased for each pass until the required diameter is achieved, are then passed through the hole. Bentonite Mud is pumped to the reaming tool creating a "caked" lining. This keeps the hole open, and reduces friction during the pipe pulling operation.

 
   
Previous PagePage 1Page 2Next Page

 
Horizonal Directional Drill Rig
Horizonal Directional Drill Rig

Horizonal Directional Drill Rig
Horizonal Directional Drill Rig
Horizonal Directional Drill Rig
     
Horizonal Directional Drill Rig
     
Move mouse over images to enlarge

Printable PDF
Pdf