Semliki Basin Field Study, Ntoroko District Western Uganda from 21th /July to 1 st / august, 2019.

Abstract

The field study to this report was conducted from 21th /July to 1 st / august, 2019 within the Semliki Basin in Ntoroko district, Western Uganda. This report comprises a detailed compilation of findings from the Semliki basin field study in the Albertine area, Western Uganda. The report is made up of eight chapters that give a detailed account of the objectives, materials and methods, lithology and stratigraphy, basin and facies analysis, structures, Geophysics of the Semliki basin and discussion of results which help in understanding of the petroleum system of the study area. The Semliki basin is generally filled with Middle Miocene to recent age sediments exhibiting a fining upward sequence (characteristic of fluvial systems) from conglomerates (overlying the basement rock) to sands to silts to clays. It is structurally wedge shaped and majorly comprises faults, joints, laminations and bedding planes, cross beds, foliations, quartz veins, unconformities, soft sediment deformation structures among others. The southern part of this basin has the highest elevation but the smallest thickness of accumulated sediments whereas the depocentre (5km thickness of sediments) is in the northern part of the Semliki basin. The basin has a valid petroleum system evidenced by the abundance of excellent reservoirs, regionally mature source rocks, traps, intra formational and regional seals as well as hydrocarbon migration