The incident occurred on Draugen in connection with a wireline operation in a well. The well was completed and started producing in 1994. Since January 2010, the well has been shut-in. Planning for the wireline operation started in the 4th quarter of 2009. During a planned test, it was discovered that the hydraulically operated main valve in the Xmas tree was not tight, which would entail repair or replacement. The wireline operation was therefore postponed until the main valve had been fixed. At the end of November 2010, the main valve had been repaired, and the implementation of the planned wireline operation could start again.
Officer of the Watch 