Heidrun Time-Lapse 2001-2004 – Further Improvement of Reservoir Understanding

P101 Heidrun time-lapse 2001-2004: further improvement of reservoir understanding Abstract A time-lapse repeated seismic survey was conducted in 2004 over the southern part of the Heidrun oil field following the time-lapse project performed from 1986-2001 (Furre et.al. 2003). The purpose of the repeated survey was to improve reservoir understanding and drainage strategy in the Fangst and Upper Tilje reservoir units which due to their location production properties and timing of the repeat survey were favorable for time-lapse. 1 The 1986-2001 time-lapse project was a conventional 3D versus Q-marine 3D acquisition. Consequently the non repeatable noise level was relatively high which