Abstract
Seismic data representing the reservoir rocks of Precambrian granitic basement, and Upper-Cretaceous clastic and carbonate rocks of the An Nafurah-Awjilah oil field, Sirt Basin, Libya were used to study the seismic attributes response. These applied seismic attributes were computed from complex signal analysis which consisted of acoustic impedance, amplitude, phase, and reflection strength.
The obtained results show that good and representative responses of attributes rely very heavily on the quality of seismic data available. They also show the effect of noise and multiples in obscuring the attributes response due to their interference with the main reflection events. The two used data sets have shown that the attributes response can be useful for the interpretation and correlation of seismic data. The displays of amplitude, reflection strength and instantaneous frequency show good indications of fault and stratigraphic unit pinchout. Such indications are not visible in the recorded sections and therefore can not be followed. Combination of the two data sets gives an opportunity for comparison to investigate and improve the accuracy of seismic interpretation