Corrosion pig minimizes shut down in German pipeline
- BEB Erdgas und Erdol GmbH, Hannover (Germany)
- 3P Services, Dalum (Germany)
In the Emsland area of Northwest Germany, crude oil is produced from several reservoirs. In January of this year, two leaks occurred simultaneously in a 4,700 m. (3 miles) long, 8-in. field line located in the BEB Erdgas and Erdoel GmbH-operated fields. This pipeline, with a design pressure of 64 bar (940 psi) and an operating pressure of 10 bar (147 psi), transports the entire wet crude oil production of the field to central production facilities. The crude oil is wet and paraffinic. The leaks were the first indication of corrosion in the pipeline which has been in service many years. A newly-developed inspection pig called the Pipeline Corrosion Logger (PiCoLo) from 3P Services, Dalum, was chosen as the primary internal inspection tool. This is an MFL pig system which is particularly suited for small diameter pipeline inspection. During the repair of the pipeline, a related MFL system, the PiCo-Extern also was used to detect internal pitting from the outside diameter of the accessible pipe. This paper reviews the performance of this pit and the problems encountered during this operation.
- OSTI ID:
- 392273
- Journal Information:
- Pipeline and Gas Journal, Vol. 222, Issue 8; Other Information: PBD: Aug 1995
- Country of Publication:
- United States
- Language:
- English
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