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| Title: |
Horizontal directional drilling: the influence of uplift and downlift during the pull-back operation |
| Category: |
Technical papers from the Journal of Pipeline Engineering
|
| Downloadable: |
Yes  |
| Project No.: |
|
| Research
Agency: |
|
| Catalog No.: |
2187s |
| Date
of Publication: |
Dec 1 2009 12:00AM |
| Price: |
$25.00
|
| Authors: |
F Podbevsek, H J Brink, and J. Spiekhout |
| Abstract: |
IN EARLIER WORK it was shown that, especially for large-diameter pipelines, the stiffness of the pipe in relation to the soil properties is an important factor in avoiding problems related to the bending radius. Also it was shown that there are high soil reactions at the head of the pipe string in the curved section of the borehole. In this paper, the influence of creating uplift or downlift when ballasting the pipe string during the pull back operation is studied. |
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