IMPLEMENTATION OF ADVANCED SEISMIC AND WELL LOGGING TO ASSESS STRUCTURAL AND RESERVOIR SET UP : SOUTH SIWA AREA, WESTERN DESERT, EGYPT.

Abstract

The South Siwa concession is located in the western Desert directly to the southwest of the Siwa Oasis and adjacent to the Libyan border. It is a frontier exploration area, while (Conoco) Continental Sahara Oil Company explored the South Diyur and adjacent South Siwa and Dakhla blocks in the 1970s. The exploration program culminated in 1979 with the drilling of the Ammonite-1 and Foram-1 exploration wells, both of which intersected Tertiary, Mesozoic and Paleozoic strata and bottomed in commercial basement without identifying oil or gas shows. The South Siwa Block is located on the probable northeast extension of the Kufra Basin in southeast Libya. The regional structural surface features in the South Siwa Block are the NE-trending Bahariya and Farafra anticlines interpreted as a deeply eroded and inverted Late Cretaceous Structure on the southern extension of the Syrian Arc system. The present study was started by selecting one of 2-D seismic lines to evaluate and discuss the main problems affect on seismic records, such as (transmission loss, multiple reflection, reflection time delay and lateral velocity contrasts), after testing the optimum processing sequences have applied on all 2D Seismic data set. The new 2-D processing sequence and parameters have improved the data compared to the old processing sequence. This study shows that the using of 2-D optimal processing sequence and parameters, should enhanced exploration and development efforts in the study area