Geological integration and evaluation of Northern Monagas, Eastern Venezuelan Basin

Aymard, R.; Pimentel, Leonardo Duarte; Eitz, P.; Lopez, P.; Chaouch, A.; Jl, Navarro; Mijares, J.; Pereira, J. G.

doi:10.1144/gsl.sp.1990.050.01.03

Cited by 13 publications

(9 citation statements)

References 3 publications

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“…In this context, even the impressive discoveries of light oil in the Maturin sub-basin in the north, with more than ?5.0 B (billion: lo9) brl, constitute but a minor variation to the total basin reserves figure. Light oil, however, has an immediate, high economic value, and every effort is being undertaken to develop these reserves (Aymard et al, 1990;Prieto and Valdes, 1992). Active development is under-way, even where drilling depths of over 18,000 ft are required, and where over-pressures, tectonic-trap complications, reservoir variations, etc.…”

Section: The Eastern Venezuela Basinsupporting

confidence: 84%

The Location of Major Oil‐ and Gasfields: Examples From the Andean Foreland

Pratsch¹

1994

Journal of Petroleum Geology

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In all producing basins, most of the oil and/or gas reserves are concentrated in a minority of fields. This distribution of oil and gas reserves is the result of “focusing” during lateral and vertical basin‐wide migration. Although the physico‐chemical and geological processes involved in hydrocarbons migration are not yet fully clarified, lateral migration directions can be established by integrating geological, geophysical and geochemical data. The Petroleum Systems concept is of use here. When combining Petroleum Systems data with well‐controlled regional structure maps, areas of hydrocarbons concentration (i.e. migration focusing) can be defined as areas of the highest exploration potential. Some basic petroleum‐geological data are reviewed from the Eastern Venezuela Basin and the Llanos Basin region in Colombia. By using published Bouguer gravity maps as regional structural form‐line maps, areas of preferred lateral migration are shown to be areas of maximum hydrocarbon accumulations. This leads on to an exploration approach in which Petroleum Systems data and regional (gravity or other) structure maps are used to evaluate acreage for its exploration value with a minimum expenditure of time, manpower and related funds.

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Section: The Eastern Venezuela Basinsupporting

confidence: 84%

The Location of Major Oil‐ and Gasfields: Examples From the Andean Foreland

Pratsch¹

1994

Journal of Petroleum Geology

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“…Caparo Fault) in the Mérida Andes during the PaleoceneEocene. Aymard et al (1990) showed that local fault controlled basins and local uplifts with truncation to the Jurassic level are overlain by Cenozoic molasse in the Apure Basin, but the age of the molasse is debated and thus it is not clear if this deformation is Palaeogene or Neogene. Nonetheless, the idea of a limited amount of Palaeogene dextral shear, during Lara Nappe emplacement, accords with the Maastrichtian onset of Caribbean subduction beneath Colombia.…”

Section: Maastrichtian -Palaeogene Expansion Of the Caribbean Plate Imentioning

confidence: 99%

Tectonic evolution of the Gulf of Mexico, Caribbean and northern South America in the mantle reference frame: an update

Pindell

Kennan²

2009

574

627

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We present an updated synthesis of the widely accepted 'single-arc Pacific-origin' and 'Yucatán-rotation' models for Caribbean and Gulf of Mexico evolution, respectively. Fourteen palaeogeographic maps through time integrate new concepts and alterations to earlier models. Pre-Aptian maps are presented in a North American reference frame. Aptian and younger maps are presented in an Indo-Atlantic hot spot reference frame which demonstrates the surprising simplicity of Caribbean-American interaction. We use the Müller et al. (Geology 21: 275-278, 1993) reference frame because the motions of the Americas are smoothest in this reference frame, and because it does not differ significantly, at least since c. 90 Ma, from more recent 'moving hot spot' reference frames. The Caribbean oceanic lithosphere has moved little relative to the hot spots in the Cenozoic, but moved north at c. 50 km/Ma during the Cretaceous, while the American plates have drifted west much further and faster and thus are responsible for most CaribbeanAmerican relative motion history. New or revised features of this model, generally driven by new data sets, include: (1) refined reconstruction of western Pangaea; (2) refined rotational motions of the Yucatán Block during the evolution of the Gulf of Mexico; (3) an origin for the Caribbean Arc that invokes Aptian conversion to a SW-dipping subduction zone of a trans-American plate boundary from Chortís to Ecuador that was part sinistral transform (northern Caribbean) and part pre-existing arc (eastern, southern Caribbean); (4) acknowledgement that the Caribbean basalt plateau may pertain to the palaeo-Galapagos hot spot, the occurrence of which was partly controlled by a Proto-Caribbean slab gap beneath the Caribbean Plate; (5) Campanian initiation of subduction at the Panama-Costa Rica Arc, although a sinistral transform boundary probably pre-dated subduction initiation here; (6) inception of a north-vergent crustal inversion zone along northern South America to account for Cenozoic convergence between the Americas ahead of the Caribbean Plate; (7) a fan-like, asymmetric rift opening model for the Grenada Basin, where the Margarita and Tobago footwall crustal slivers were exhumed from beneath the southeast Aves Ridge hanging wall; (8) an origin for the Early Cretaceous HP/LT metamorphism in the El Tambor units along the Motagua Fault Zone that relates to subduction of Farallon crust along western Mexico (and then translated along the trans-American plate boundary prior to onset of SW-dipping subduction beneath the Caribbean Arc) rather than to collision of Chortis with Southern Mexico; (9) Middle Miocene tectonic escape of Panamanian crustal slivers, followed by Late Miocene and Recent eastward movement of the 'Panama Block' that is faster than that of the Caribbean Plate, allowed by the inception of east-west trans-Costa Rica shear zones. The updated model integrates new concepts and global plate motion models in an internally consistent way, and can be used to test and guide more local ...

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“…During most of the Cretaceous the northern part of the South American plate was a passive margin bordering the proto-Caribbean sea-way, which was supplied with sediment derived from the south (Aymard et al, 1990). The Cretaceous-Paleogene passive margin sedimentary succession dips gently to the northwest and onlaps the Jurassic break-up unconformity (Di Croce et al, 1999).…”

Section: Sequence 1: Cretaceous-paleogenementioning

confidence: 99%