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Read the whole story of…

…Inspection of short field lines

We appreciate to share our knowledge and our experience with customers and business partners. Every pipeline inspection project presents new challenges and requires an adapted approach as well as individual technical solutions.

We have compiled this treasure trove of first-hand practical experience for you as a case study. There we describe our concept, our performance and the result of our ILI projects.

Pipeline Description: Field lines connecting well heads and gathering stations within a salt cavern storage facility in Northern Germany. Each wellhead is connected by two pipelines, one to supply solvent water (sea water) and one to dispose brine. All lines are 10” WT 8.0mm, have 1.5D bends and laid underground. Typical length is between 100m and 400m. The project included a total of 12 pipelines. Why is it challenging? There are no permanent pig traps available. Due to the short length of the lines, a conventional MFL inspection was considered to be extremely expensive. From an operational standpoint it was not possible to inspect all lines during one mobilisation. For each well head with two similar lines, one mobilisation was required. Of particular importance was to complete cleaning and inspection in the shortest possible time. Target of the inspection: To perform cleaning runs and execute an MFL inspections at minimum downtime, with an acceptable downtime of 24h for two pipelines.

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