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dc.contributor.advisorOpuwari, Mimonitu
dc.contributor.authorSass, Amy Lauren
dc.date.accessioned2019-02-13T12:01:13Z
dc.date.available2019-02-13T12:01:13Z
dc.date.issued2018
dc.identifier.urihttp://hdl.handle.net/11394/6590
dc.description>Magister Scientiae - MScen_US
dc.description.abstractThis study is located within the Bredasdorp Basin which is on the southern continental margin, offshore South Africa. The basin is located between Infanta and Agulhas arches and is a rift basin that is southeastern trending. Sedimentology reports have shown that the basin is predominantly filled by Aptian to Maastrichtian deposits which overlays pre-existing late Jurassic to Early Cretaceous fluvial and shallow marine syn-rift deposits. Devonian Bokkeveld Group slates and or Ordovician-Silurian Table Mountain Group quartzites are shown to be the composition of basement rocks. The study area incorporates only three wells for this research; well F-AH1, F-AH2 and F-AR1. This paper was completed through analyzing and juxtaposing interpretations of results from gamma ray wireline log analysis with core analysis in which these correlations and figures were displayed using Petrel software and Coral Draw respectively. Core analysis resulted in the identification of, sixteen litho-facies for the entire study, which were recognized according to its grain size, texture, sedimentary structures, colour changes, base and top contacts, bioturbation, noticeable minerals, etc. Facies tend to alternate all the way through each well and between different wells with similar facies being present in different wells, but they are not evident in all the cores. Based on the classification of sand bodies, core analysis provides good indication that the general depositional environment of reservoirs within the studied wells are within a marginal marine depositional environment which are tidally influenced. Log signatures typical of sandstone reservoir bodies were discovered in the field where sand bodies are 20 m thick or less and were recognized in the study area. Depositional environments were characterized based on depositional environment similarities: a funnel-shaped facies representing a crevasse splay; a cylindrical-shaped facies representing slope channel-fills representing the transgressive-regressive shallow marine shelf.en_US
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.subjectSouth Africaen_US
dc.subjectBlock 9en_US
dc.subjectBredasdorp basinen_US
dc.subjectWellsen_US
dc.subjectDepositional environmenten_US
dc.titleThe depositional environment of Sandstone reservoirs, of wells within F-AH and F-AR field, offshore the Bredasdorp basin, South Africaen_US
dc.rights.holderUniversity of the Western Capeen_US


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