Calibration of 4D Seismic Fluid and Lithology Amplitudes over the Arbroath Field

A-18 CALIBRATION OF 4D SEISMIC FLUID AND LITHOLOGY AMPLITUDES OVER THE ARBROATH FIELD 1 Introduction The Arbroath Field is located within UKCS Blocks 22/17 and 22/18 and together with the adjacent producing oil fields Montrose and Arkwright comprise the MonArb group of fields. The main producing horizon of all three fields is the Forties Sandstone lying at approximately 8150 ft TVD SS in the Montrose and Arbroath Fields and 8430 TVD SS in the Arkwright Field. Production of oil from the Montrose Field started in 1976 and decreased to very low levels in 1990. The Arbroath and Arkwright Fields are