Vector Fidelity Correction for Non-Gimballed Acquisition over the Heidrun Oil & Gas Field

E037 VECTOR FIDELITY CORRECTION FOR NON- GIMBALLED ACQUISITION OVER THE HEIDRUN OIL&GAS FIELD Introduction 1 A 4C seismic survey was conducted last year over the northern part of the Heidrun oil&gas field. The main purpose of the ST0301 survey (fig.1) was to improve structural definition of the faulted heterogeneous Lower Jurassic Åre Fm reservoirs. The reservoir management plan has identified 15-20 drainage points and a STOOIP of almost 90millSm 3 in the area covered by the new dataset. Acquisition was conducted by MGC in the early summer of 2003 and processing was awarded to CGG Massy directly afterwards. In addition