Corrosion problems solved in CT nitrogen operations off Brazil

Laboratory and field research with various completion fluids helps refine procedures to reduce corrosion in coiled tubing during use of nitrogen contaminated with oxygen.For several years, coiled-tubing operations off Brazil have used nitrogen generation units. Petrobras has increased the use of nitrogen generation units because of the remote locations, lack of liquid nitrogen suppliers, and other logistical issues.Using a nitrogen generation unit in remote locations, where most of the platforms have very limited space, solved the longstanding problem of supplying nitrogen. However, when we used a nitrogen generation unit with coiled-tubing operations, another concern arose.In situ nitrog...

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