The Monagas Fold–Thrust Belt of Eastern Venezuela. Part I: Structural and thermal modeling

Parra, Marien; Sanchez, G.; Montilla, Linda; Guzmán, Oswaldo; Namson, Jay; Jácome, María I.

doi:10.1016/j.marpetgeo.2010.01.001

Cited by 10 publications

(19 citation statements)

References 37 publications

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“…This system involves Cretaceous and possibly pre-Cretaceous units too (Parnaud et al, 1995). The second one is located south of the Pirital thrust and encompasses the Orocual and Furrial thrusts with a thinner stratigraphic unit (Parra et al, 2011). These thrusts wind up into a series of intra Neogene detachments (Roure et al, 1994(Roure et al, , 2003 that form structures where the main exploratory opportunities are located.…”

Section: Geological Settingmentioning

confidence: 99%

Study of magnetic contrasts applied to hydrocarbon exploration in the Maturín Sub-Basin (eastern Venezuela)

et al. 2011

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We have studied near-surface magnetic contrasts in nine oil wells from an oil prospective area in eastern Venezuela (compressive deformation front of the northeastern Maturín Sub-Basin). Samples are drill cuttings taken at intervals of about 15 m within approximately the first 1200 m of most of these wells. Rock magnetic experiments, electron paramagnetic resonance (EPR), extractable organic matter (EOM), X-ray diffraction and scanning electron microscopy (SEM) are used to discriminate between two anomalies in magnetic susceptibility (MS), related to either a reducing environment caused by the underlying reservoir (Type A), or to primary lithological contrasts (Type B). Contour maps of MS, S-ratio and organic-matter-free radical concentrations (OMFRC), for the A-like depth levels, show a major central zone of anomalous high values. This area is probably associated with either maximum accumulation of hydrocarbons in the reservoir or with their southerly migration from the northern petroleum source towards the deformation front. We argue that such a result could be used, for future exploration and production ventures in the region, as a preliminary characterization of the reservoir. We also show in a Day plot, that saturation remanencesaturation magnetization ratio (M rs /M s ) and coercivity of remanence -coercive force ratio (H cr /H c ) stand as additional criteria to discriminate between these two types of magnetic contrasts. In fact, for the area of study, hysteresis ratios show three distinct trends corresponding to samples from A-like, B-like and non-anomalous depth levels.

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Section: Geological Settingmentioning

confidence: 99%

Study of magnetic contrasts applied to hydrocarbon exploration in the Maturín Sub-Basin (eastern Venezuela)

et al. 2011

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“…In order to predict the location of other analogous reservoirs we used the structural model presented in Part I (Parra et al, 2010) to developed a palaeo-topographic reconstruction at early-middle Miocene. We have then used this reconstruction to constrain the palaeogeography of the middle Miocene foredeep where the turbidites were deposited.…”

Section: Introductionmentioning

confidence: 99%

“…In the first part of this study, Parra et al (2010) present a regional model of the structure and evolution of the MFTB and MSB (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

“…To predict the location of these reservoirs it is necessary to understand the tectonic evolution of the MSB and its relationship with the deformation processes that created the MFTB. Parra et al (2010) present a series of 2D palaeo-structural models across 3 regional profiles; we added two more regional transects and used the 2D palaeo-structural models that represent the early-middle Miocene to create a 3D palaeo-structural model. This 3D model was then used as a framework to build a 3D palaeotopography of the MFTB and MSB and to predict the location and distribution of the middle Miocene turbidite systems.…”

Section: Introductionmentioning

confidence: 99%

“…In the frontal anticline structures of the MFTB (Amarilis Area) light hydrocarbons have been produced from these turbidite systems which were deposited in a foreland basin with a complex tectonostratigraphic evolution.In order to predict the location of other analogous reservoirs we used the structural model presented in Part I (Parra et al, 2010) to developed a palaeo-topographic reconstruction at early-middle Miocene. We have then used this reconstruction to constrain the palaeogeography of the middle Miocene foredeep where the turbidites were deposited.…”

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confidence: 99%

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