HRT Oil and Gas

Copacabana, Brazil

HRT Oil and Gas

Copacabana, Brazil
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Mello M.R.,HRT Oil and Gas | De Azambuja Filho N.C.,HRT Oil and Gas | Bender A.A.,HRT Oil and Gas | Barbanti S.M.,Integrated Petroleum Expertise Company IPEX | And 3 more authors.
Geological Society Special Publication | Year: 2013

Tectonic reconstructions made across the southern South Atlantic Ocean indicate a diversity of rift and drift basin characteristics on the conjugate margins that define them as different stratigraphic and structural entities. In terms of petroleum systems, the basins are not as unlike as some characteristics suggest. Given the lack of significant hydrocarbon discoveries to date south of the Walvis Ridge, doubts have been cast on the presence in this area of the prolific Lower Cretaceous lacustrine and marine source rock systems, which are well known in the Greater Campos Basin and offshore Angola. Oils and condensates from the basins south and north of the Walvis Ridge exhibit geochemical similarities suggesting that comparable source rock systems are present in both areas. The condensate geochemical analysis results from the Kudu Field in Namibia are compared with oils from marine and lacustrine sources in Brazil, indicating that the Kudu condensates are derived from at least two different source rocks. These results suggest that the underexplored basins offshore Namibia contain thermally mature Lower Cretaceous lacustrine and marine source rocks, offering a new frontier for petroleum exploration in Africa's southern South Atlantic. © The Geological Society of London 2013.

Mello M.R.,HRT Oil and Gas | Bender A.A.,HRT Oil and Gas | Azambuja Filho N.C.,HRT Oil and Gas | Barbanti S.M.,IPEX | And 2 more authors.
Proceedings of the Annual Offshore Technology Conference | Year: 2011

The sedimentary basins of the South Atlantic have developed into one of the most active regions for petroleum exploration in the whole world. The increase of interest in the oil industry has resulted from the numerous recent giant to supergiant oil and gas discoveries along both the eastern and western continental margins of the South Atlantic in deep and ultradeep waters. The use of the petroleum system concept in the South Atlantic marginal basins provides an effective means of classifying and characterizing the diversity of the oil and gas systems, as well as, a means to aid in the selection of appropriate exploration analogs. The South Atlantic marginal basins also provide some of the best examples of how petroleum systems evolved through time with respect to both their levels of certainty and their areal and stratigraphic limits. An examination of the Orange and Santos basins, in Namibia and Brazil, respectively, provides examples of almost perfect analogs in terms of petroleum system. For example, lacustrine and marine source rocks, similar oil type, almost identical reservoir deposition environments, traps associated with basement highs and vertical migration pathways dominate in each of the basins, with normal faults networks providing the effective carrier. However, there are clear differences when Aptian salt layers are present in the Santos basin and absent in the Namibian basins. Also, differences are observed when thermal evolution is considered. Although no Aptian salt section is present in Namibian basins, and thermal maturity appears to be much higher in the Namibian coast, both basins share almost identical elements and processes of the petroleum system concept. In summary, the aim of this paper is to show how the petroleum system modeling, supported by geochemistry, allows a correlation between counterpart basins across the South Atlantic realm. Copyright 2011, Offshore Technology Conference.

Bender A.A.,HRT Oil and Gas | Xu P.,IPEX
Oilfield Review | Year: 2010

The offshore Potiguar and Ceará basins of Brazil are largely unexplored beyond the shallow continental shelf. A multiclient study of these basins was conducted using seismic data to define horizons for a basin and petroleum system model. WesternGeco acquired five controlled source electromagnetic surveys and integrated them with other methodologies specifically to mitigate exploration risk in the study area. Copyright © 2010 Schlumberger.

Bartoszeck M.K.,Federal University of Paraná | MacHado A.M.L.,Federal University of Paraná | Rostirolla S.P.,HRT Oil and Gas
Revista Brasileira de Geociencias | Year: 2012

This paper has reported the use of geological and geophysical data into a 3D flow simulation model (gas). To adopt freeware software in flow simulation, we produced a program called GeoGrid3D. Our program is available with fault insertion features into ASCII 3D models. Also, it has other codification functions that change data for boast recognition (boast is the flow simulation freeware issued by the United States Department of Energy). We have developed the 3D reservoir grid and the structural framework model with data from outcrops of Permian sedimentary rocks and shallow seismic reflection. Analysis of geological facies in outcrops and their correlation with the stratigraphy are the methods used in 3D grid geological modeling and petrophysical properties. To demonstrate GeoGrid3D functions, we elaborated a main petrophysical model with supplementary three hypothetical tectonic faults playing. The gas saturation, after flow simulation, confirms that changing faults permeability inside the reservoir will change gas production in this model.

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