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Seasonal Pipe Movement in Permafrost Terrain, Kp2 Study Site, Norman Wells Pipeline
| Content Provider | Semantic Scholar |
|---|---|
| Author | Burgess, Margo M. Nixon, John F. Lawrence, Daniel E. |
| Copyright Year | 1998 |
| Abstract | The Norman Wells pipeline is the first completely buried oil pipeline in Canada in permafrost terrain. From start-up in 1985 until late 1993, the oil was chilled year-round for entry into the line at -2iC. A seasonal freezethaw chilling cycle has since been in effect. A 100 m long site was established in 1994 to observe the interaction between the alternating cold and warm pipe and permafrost soils. Successive pipe elevation surveys have shown that the pipe undergoes seasonal heave and settlement of up to 22 cm. Net movement of up to 17 cm has occurred over three years, with the north end heaving, while the central and southern end settle. Pipe elevation surveys compare well to elevation data derived from Geopig runs and provide independent support to the internal geometry monitoring tool. Incremental pipe bending strains are low, less than 0.05%, and well within design limits. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://research.iarc.uaf.edu/NICOP/DVD/ICOP%201998%20Permafrost%207th%20conf/CD-ROM/Proceedings/PDF001189/016341.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
