APPLICATION OF FINE STRUCTURAL INTERPREATION FOR GASAB BLOCK, SUDAN
精细构造解释在苏丹Gasab区块的应用

Gasab block is a brachyanticline of Melut basin,Sudan.It belongs to southeastern fault of norther concave.It has many faults and assemble of rift system is complex.It is in the range of southwestern and souther sand body,which is rich and changes quickly.Gasab block is a complex fault block oil and gas field by this two factors.During the seismic date interpreation of Gasab block,the formation of interest is Eocene Yabus IV-VI,and it further investigate the structure and fracture feature,the distribution of reservoir,the change of physical property and the law of distribution of hydrocarbon.Man-machine interaction,time slice,coherence slice,multi-line slice and 3-D visualization are applied to idenfy faults and structure.The results of interprection were used to allocate exploarion well,which found a series of oil traps and got preferable effect.Gasab block based on these understanding is another incremental reserve area after the hundred million tons level Moleeta oilfield was found in Sudan.