dc.creator | Holz, Michael | |
dc.creator | Kalkreuth, Wolfgang | |
dc.creator | Rolim, Silvia Beatriz Alves | |
dc.creator | Holz, Michael | |
dc.creator | Kalkreuth, Wolfgang | |
dc.creator | Rolim, Silvia Beatriz Alves | |
dc.date.accessioned | 2022-10-07T15:19:28Z | |
dc.date.available | 2022-10-07T15:19:28Z | |
dc.date.issued | 2010 | |
dc.identifier | 0264-8172 | |
dc.identifier | http://www.repositorio.ufba.br/ri/handle/ri/5811 | |
dc.identifier | v. 27, n. 5 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/4004784 | |
dc.description.abstract | Coalbed methane (CBM) is a worldwide exploration target of the petroleum industry. In Brazil, the most
important coal-bearing succession is associated with the Permian Rio Bonito Formation of the Parana Basin. The gas-prone areas are located at the southeastern margin of the Parana´ Basin and possibly in the
offshore region of the northern part of the Pelotas Basin. Coalfields end abruptly at the present day shoreline, a result of rifting of Gondwana and the evolution of the South Atlantic Ocean. All geologic
indicators suggest that in pre-rift times the coal seams extended further eastwards, probably now lying deeply buried below the sedimentary succession of the Pelotas Basin. The present paper discusses
structural, stratigraphic, seismic and aeromagenetic data that support the preservation of continental
crust beneath ocean sediment. If the coal beds had similar lateral extent to known onshore coals, and coal beds extended across the projected extension of the Parana basin, and there was a conservative 5 m
of cumulative coal thickness, then a potential methane volume can be estimated for this newly inferred resource. Average onshore coal gas content is 32 scf/ton (1.00 m3/ton). If this is similar in the offshore
coal deposits, then the hypothetical methane volume in the offshore area could be in excess of 1.9 1012 scf (56 109 m3). Metamorphism from dikes associated with rifting are potential complicating
factors in these deposits, and since no borehole reaching the deep-lying strata in the offshore area are
available, this is a hypothetical gas resource with a certain level of uncertainty which should be tested in
the future by drilling a deep borehole. | |
dc.language | en | |
dc.source | DOI: 10.1016/j.marpetgeo.2010.01.013 | |
dc.subject | Coalbed methane | |
dc.subject | Offshore | |
dc.subject | Paraná Basin | |
dc.subject | Pelotas Basin | |
dc.subject | Brazil | |
dc.title | Extension of the Parana´ Basin to offshore Brazil: Implications for coalbed methane evaluation | |
dc.type | Artigo de Periódico | |