Formation and inversion of salt-detached ramp-syncline basins. Results from analog modeling and application to the Columbrets Basin (Western Mediterranean)

Roma, Maria; Ferrer, Oriol; Roca, Eduard; Pla, Oriol; Escosa, Frederic O.; Butillé, Mireia

doi:10.1016/j.tecto.2018.08.012

Cited by 32 publications

(35 citation statements)

References 55 publications

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“…That means that the buoyancy of the ductile layer in the model is larger than that in the natural cases. This limitation is common in sand-silicone analog experiments, and it has been shown that it does not affect firstorder model results (e.g., Bonini, 2001;Bahroudi and Koyi, 2003;Ferrer et al, 2016;Roma et al, 2018). For the viscous layer, we used the Hormuz evaporites as reference, with a viscosity range from 10 18 to 10 21 Pa s (Mukherjee et al, 2010;Sadeghi et al, 2016; Table 1).…”

Section: Scalingmentioning

confidence: 99%

“…Finally, it must be stressed that in our models, the buoyancy of the ductile layer is higher than in the natural cases (Table 1), which should have some influence on the experiment dynamics. Nevertheless, this behavior is assumed in most of the analog modeling set for the simulation of deformation in upper crustal levels (see models of Ferrer et al, 2016;Li and Mitra, 2017;Borderie et al, 2018;Roma et al, 2018 who used the same analog materials as in this paper). Moreover, at the beginning of our experiments, the lateral flow of the silicone was limited, as it was confined by sand.…”

Section: Initial Sand-silicone Packmentioning

confidence: 99%

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Analog Models of Fold-and-Thrust Wedges in Progressive Arcs: A Comparison With the Gibraltar Arc External Wedge

et al. 2020

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Section: Scalingmentioning

confidence: 99%

Section: Initial Sand-silicone Packmentioning

confidence: 99%

Analog Models of Fold-and-Thrust Wedges in Progressive Arcs: A Comparison With the Gibraltar Arc External Wedge

et al. 2020

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“…This fact implies high uncertainty and low confidence in the position and geometry of the horizons in the structural model built based on the picking of reflectors (Leahy and Skorstad, 2013). The poor quality of seismic data near faults also generate high uncertainty in their interpretation (Thore et al, 2002;Røe et al, 2014). Generally, faults do not generate seismic reflections, and they are interpreted based on reflector terminations.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, reflector terminations can also be produced by other geophysical and geological factors, such as noise in the seismic data, stratigraphic pinchouts, facies changes or unconformities (Alcalde et al, 2017b). Additionally, faults are typically interpreted as singular surfaces whereas they are zones of deformation (Røe et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, different methodologies to capture the uncertainty in the geological structure have been developed, and some have been included as an integrated part of the modeling workflow. Modeling the uncertainty associated with fault shape and location has been addressed by Hollund et al (2002), Holden et al (2003), Røe et al (2014), and Qu et al (2015), amongst others. Manzocchi et al (2008) evaluated the impact on the production of the uncertainty on sedimentological characteristics of shallow marine reservoirs combined with the fault uncertainty associated with fault density and permeability.…”

Section: Introductionmentioning

confidence: 99%

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Quantifying the impact of the structural uncertainty on the gross rock volume in the Lubina and Montanazo oil fields (Western Mediterranean)

Bárbara¹,

Cabello

Bouche

et al. 2019

Solid Earth

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Abstract. Structural uncertainty is a key parameter affecting the accuracy of the information contained in static and dynamic reservoir models. However, quantifying and assessing its real impact on reservoir property distribution, in-place volume estimates and dynamic simulation has always been a challenge. Due to the limitation of the existing workflows and time constraints, the exploration of all potential geological configurations matching the interpreted data has been limited to a small number of scenarios, making the future field development decisions uncertain. We present a case study in the Lubina and Montanazo mature oil fields (Western Mediterranean) in which the structural uncertainty in the seismic interpretation of faults and horizons has been captured using modern reservoir modeling workflows. We model the fault and horizon uncertainty by means of two workflows: the manually interpreted and the constant uncertainty cases. In the manually interpreted case, the zones of ambiguity in the position of horizons and faults are defined as locally varying envelopes around the best interpretation, whose dimensions mainly vary according to the frequency content of the seismic data, lateral variations of amplitudes along reflectors, and how the reflectors terminate around faults when fault reflections are not present in the seismic image. In the constant case, the envelope dimensions are kept constant for each horizon and each fault. Both faults and horizons are simulated within their respective uncertainty envelopes as provided to the user. In all simulations, conditioning to available well data is ensured. Stochastic simulation was used to obtain 200 realizations for each uncertainty modeling workflow. The realizations were compared in terms of gross rock volumes above the oil–water contact considering three scenarios at the depths of the contact. The results show that capturing the structural uncertainty in the picking of horizons and faults in seismic data has a relevant impact on the volume estimation. The models predict percentage differences in the mean gross rock volume with respect to best-estimate interpretation up to 7 % higher and 12 % lower (P10 and P90). The manually interpreted uncertainty workflow reports narrower gross rock volume predictions and more consistent results from the simulated structural models than the constant case. This work has also revealed that, for the Lubina and Montanazo fields, the fault uncertainty associated with the major faults that bound the reservoir laterally strongly affects the gross rock volume predicted. The multiple realizations obtained are geologically consistent with the available data, and their differences in geometry and dimensions of the reservoir allow us to improve the understanding of the reservoir structure. The uncertainty modeling workflows applied are easy to design and allow us to update the models when required. This work demonstrates that knowledge of the data and the sources of uncertainty is important to set up the workflows correctly. Further studies can combine other sources of uncertainty in the modeling process to improve the risk assessment.

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Halokinetically Overprinted Tectonic Inversion of the Penobscot 3D Volume Offshore Nova Scotia, Canada

Peace,

Phethean,

Jess

et al. 2024

Pure Appl. Geophys.

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Formation and inversion of salt-detached ramp-syncline basins. Results from analog modeling and application to the Columbrets Basin (Western Mediterranean)

Cited by 32 publications

References 55 publications

Analog Models of Fold-and-Thrust Wedges in Progressive Arcs: A Comparison With the Gibraltar Arc External Wedge

Analog Models of Fold-and-Thrust Wedges in Progressive Arcs: A Comparison With the Gibraltar Arc External Wedge

Quantifying the impact of the structural uncertainty on the gross rock volume in the Lubina and Montanazo oil fields (Western Mediterranean)

Halokinetically Overprinted Tectonic Inversion of the Penobscot 3D Volume Offshore Nova Scotia, Canada

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