Seismic interpretation for hydrocarbon traps detection of Warka-Zakura area south of Iraq

الملخص EN

This research represents a reflection seismic study (structural and stratigraphic) for a (852) km2 area located in the south of Iraq within the administrative border of the province of Al-Muthanna and Qadisiyah province ,by using 2-D seismic data from Oil Exploration company three main seismic reflectors are picked, these are (Zubair and Yamama) Formations which they deposited during the Cretaceous age , and (Gotnia) Formation which deposited during Jurassic age .Structural maps of Formations are prepared to obtain the location and direction of the sedimentary basin and shoreline ,time, velocity and depth maps are drawn depending on the structural interpretation of the picked reflectors and show several structural feature as nose structure .

Seismic interpretation of the area approves the presence of some stratigraphic features in the studied Formations.

Some distributary mound, flatspot , and channel were observed within the area .The study of seismic facies of the picked reflectors distinct two type of seismic facies the first is parallel seismic facies represented by Zubair Formation and second is progressive seismic facies characterized by Yamama and Gotnia Formations .Using seismic attribute techniques including instantaneous frequency showed low frequency in areas of hydrocarbon accumulations.

Instantaneous phase attribute detected seismic sequence boundaries, sedimentary layer patterns and regions of onlap and downlap patterns.

Amplitude attribute showed low amplitude flat spots.