Spectral decomposition application for analyzing the structure and the reservoir potential: a case study of Penobscot, Nova Scotia offshore, Canada

Asim, Shazia; Ahmad, Salman; Zhu, Peimin; Naseer, Muhammad Tayyab; Butt, Mehwish

doi:10.1007/s12517-015-2168-x

Cited by 9 publications

(2 citation statements)

References 21 publications

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“…A strong amplitude corresponds to pro delta front deposition, a medium-weak amplitude corresponds to distal delta front lobe deposition, and a weak amplitude corresponds to semi-deep lake mudstone deposition. Seismic attribute slices are used widely for the lithological and petrophysical prediction of reservoirs (Chopra and Marfurt, 2006;Asim et al, 2016). The present study used acoustic impedance attribute slices (Figure 1B) from Members 1 and 2 of the Xing'anling Formation to investigate the characteristics of sand bodies in the Sudeert fault zone.…”

Section: Figurementioning

confidence: 99%

Hydrocarbon potential assessment of the lacustrine fan delta reservoirs in the Lower Cretaceous syn-rift Xing’anling Formation in the Beier Sag, Hailar Basin, Northeast China

Cui,

Li,

Jiang

et al. 2023

Front. Earth Sci.

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Efficient exploration and development of oil and gas resources in complex geological environments continue to pose significant challenges for the energy industry. The localization and extraction of reservoirs in basins with complex structures, developed faults, and scattered sedimentary sand bodies are topics of international interest. One such basin, the Hailar Basin in northeastern China, represents a complex geological environment with heterogeneous distributions of oil and gas reserves, along with variable reservoir conditions, leading to challenges in hydrocarbon exploration and extraction. The Sudeert oil field, situated within this basin, is known for its high productivity; nevertheless, the underlying factors responsible for its success are not yet fully comprehended. Based on seismic, logging, and core data from the Sudeert oil field, as well as previous research, this study comprehensively analyzed the sedimentary environment, sedimentary facies characteristics, sand body distribution patterns, vertical stacking relationships of sand bodies, and hydrocarbon accumulation potential of the oil reservoirs in the Lower Cretaceous Xing’anling Formation in the Sudeert oil field. The Xing’anling Formation I and II oil reservoirs are deposited in a fan-delta front sedimentary environment, and the sedimentary microfacies that are conducive to the development of reservoir sand bodies include underwater distributary channels, underwater natural levees, estuary dams, front silt beds, and turbidite sands. Among them, the underwater distributary channel microfacies is the main depositional facies for the development of reservoir sand bodies. Three major depositional patterns of fan lobes can be identified within this depositional system: 1) isolated, 2) contact, and 3) superimposed lobes. Different combinations of lobes developed in different blocks and resulted in different sand body depositional patterns. The isolated lobes mainly developed in the western oil-producing (B28 block) due to the scarcity of sand and slowly increasing accommodation space. The contact lobes mainly developed in the central oil-producing block (B14 block) due to sufficient sediment supply and steadily increasing accommodation space across a wide area. The superimposed lobes mainly developed in the southeast oil-producing block (B16 block) due to sufficient sediment input and steadily increasing accommodation space within a restricted area. In the whole study area, the superimposed lobe pattern is the most favorable depositional pattern and forms the highest-quality reservoirs because of the high degree of sand body connectivity. These results also highlight the utility of sedimentary patterns and sand body assemblage studies for the oil exploration and development of similar rifted basins.

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Section: Figurementioning

confidence: 99%

Hydrocarbon potential assessment of the lacustrine fan delta reservoirs in the Lower Cretaceous syn-rift Xing’anling Formation in the Beier Sag, Hailar Basin, Northeast China

Cui,

Li,

Jiang

et al. 2023

Front. Earth Sci.

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“…Sand-shale lithological sequences are a prospective hydrocarbon bearing play type in petroleum exploration (Quirein et al 2012;Bjørlykke 2015;Diasty et al 2015;Javanshir et al 2015;Asim et al 2016). Reservoir characterization of such lithological sequences has always challenged the geoscientists due to the presence of anisotropy and heterogeneity (Alves et al 2014;Auchter et al 2016;Kneller et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Bayesian inversion of synthetic AVO data to assess fluid and shale content in sand-shale media

2017

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Reservoir characterization of sand-shale sequences has always challenged geoscientists due to the presence of anisotropy in the form of shale lenses or shale layers. Water saturation and volume of shale are among the fundamental reservoir properties of interest for sand-shale intervals, and relate to the amount of fluid content and accumulating potentials of such media. This paper suggests an integrated workflow using synthetic data for the characterization of shaley-sand media based on anisotropic rock physics (T-matrix approximation) and seismic reflectivity modelling. A Bayesian inversion scheme for estimating reservoir parameters from amplitude vs. offset (AVO) data was used to obtain the information about uncertainties as well as their most likely values. The results from our workflow give reliable estimates of water saturation from AVO data at small uncertainties, provided background sand porosity values and isotropic overburden properties are known. For volume of shale, the proposed workflow provides reasonable estimates even when larger uncertainties are present in AVO data.

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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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Spectral decomposition application for analyzing the structure and the reservoir potential: a case study of Penobscot, Nova Scotia offshore, Canada

Cited by 9 publications

References 21 publications

Hydrocarbon potential assessment of the lacustrine fan delta reservoirs in the Lower Cretaceous syn-rift Xing’anling Formation in the Beier Sag, Hailar Basin, Northeast China

Hydrocarbon potential assessment of the lacustrine fan delta reservoirs in the Lower Cretaceous syn-rift Xing’anling Formation in the Beier Sag, Hailar Basin, Northeast China

Bayesian inversion of synthetic AVO data to assess fluid and shale content in sand-shale media

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

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