Reprint of “Solid bitumen occurrences in the Arruda sub-basin (Lusitanian Basin, Portugal): Petrographic features”

Gonçalves, Paula Alexandra; Filho, João Graciano Mendonça; Silva, Frederico Sobrinho da; Flores, Deolinda

doi:10.1016/j.coal.2014.10.012

Cited by 12 publications

(3 citation statements)

References 34 publications

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“…Many studies focus their attention on the characterization of solid bitumen using both petrographic and geochemical approaches to try to define its origin and assess the thermal maturity of the sequences [7,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Recent reviews of solid bitumen characterization (e.g., origin, classification of physical and chemical properties), especially the one associated with source-rock reservoirs, and its implications for reservoir quality, porosity, permeability, and producibility were published by Mastalerz et al [6] and Sanei [31].…”

Section: Introductionmentioning

confidence: 99%

Solid Bitumen Occurrences in the Pyrenean Basin (Southern France): A Case Study across the Pliensbachian–Toarcian Boundary

et al. 2021

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The study across the Pliensbachian–Toarcian boundary sedimentary record in the Bizanet section of the Pyrenean Basin (southern France) revealed the presence of solid bitumen. This secondary organic matter was characterized using petrographic (transmitted and reflected white lights, incident blue light, and scanning electron microscopy) and geochemical (total organic carbon, total sulfur, and insoluble residue) techniques. The spore coloration index (SCI) was also determined. With the characterization of the optical properties and reflectance of the solid bitumen, it was possible to distinguish four different families (A–D) that display a wide range of reflectance values, from 0.21% to 2.64% BRr, i.e., from glance pitch to meso-impsonite. SCI values were higher than 9–9.5 (%Req > 1.50%). The comparison between the equivalent vitrinite reflectance values of the solid bitumen and SCI showed that this index and the solid bitumen D values are concordant, indicating that solid bitumen D can be considered an indigenous bitumen. The other three families of solid bitumen (A–C) are considered as having migrated. The laterally equivalent Pont de Suert section (South Pyrenean Zone) displays no trace of solid bitumen which points to the important role of the morphotectonic context of the Bizanet section in the migration of these hydrocarbons, namely, the presence of a major thrust fault in the eastern Corbières close to the section’s location.

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Section: Introductionmentioning

confidence: 99%

Solid Bitumen Occurrences in the Pyrenean Basin (Southern France): A Case Study across the Pliensbachian–Toarcian Boundary

et al. 2021

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“…The presence of oil spills and the association with solid bitumen in the cracks and spaces between the granules were stated to be a genetic relationship with the liquid hydrocarbon formation process of the Chia Gara formation. Another study was carried out by Gonçalves et al (2015) at the sub-(Lusitanian Basin, Portugal). The middle Jurassic to Cretaceous sedimentary record in the Lusitanian Basin (Portugal) reveals the presence of disseminated solid bitumen.…”

Section: Introductionmentioning

confidence: 99%

Hydrocarbon generation potential of late cretaceous shales and carbonates in Hekimhan basin and genetic relationships with Karadere oil seep (Eastern Anatolia Region, Turkey)

Erik

2018

J Petrol Explor Prod Technol

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In this study, Karadere oil seep (solid bitumen) and Late Cretaceous shales and carbonate levels of the Hekimhan Formation in Hekimhan Basin are compared genetically by means of organic-geochemical data. Investigated shale samples have generally low (< 0.5%) the total organic carbon values (TOC, wt%) and there is no petroleum and gas source-rock potential; however, the amount (0.11-5.92%) and type (type II-III kerogen) of organic matter within limestone are consistent for source-rock potential. On the basis of average T max (433 °C) and 0.53% R 0 values, the investigated samples are at the immature and early mature level for hydrocarbon generation. According to biomarker data, the bitumen is pre-Cretaceous in age, highly reducing conditions, formed in a marine depositional environment at normal salinity, and under the influence of high bacterial activity, and was originate from an immature carbonate source rock. These geochemical data are highly in agreement with the late Cretaceous limestone of the Hekimhan Formation, and these rocks may be considered the source rock of the solid bitumen. However, these organic richness zones formed from non-indigenous organic material, and therefore, it is concluded that this seepage which generates from non-indigenous organic materials cannot be due to the limestone at the evaluated level. On the basis of organic-geochemical evaluations, it has been concluded that, in Hekimhan Basin, some hydrocarbons developed in deeper, more mature intervals of the limestone, and that these were migrated probably only a short distance within the basin and became really surfaced in relation to tension fractures.

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“…In vitrinite-poor sedimentary sequences, the presence of solid bitumen can be an indicator of oil/gas as well as maturity, and can also be used to get information on migration paths [6][7][8] . Solid bitumen is found in various petroliferous basins around the world, and has been extensively studied 2,5,[9][10][11][12] . However, solid bitumen from Indian sedimentary basins has not been studied yet.…”

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Characterization of Solid Bitumen from Panandhro Lignite (Western India) Based on FTIR and Pyrolysis GC-MS Study

Mathews¹,

Singh²

2016

Current Science

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In this study, FTIR and pyrolysis GC-MS analysis methods are used to characterize the handpicked solid bitumen (viscous residue of hydrocarbon) found as fillings in the lignite of Panandhro field, Gujarat. The FTIR data shows that solid bitumen is marked by intense aliphatic CH x stretching peaks between 3000 and 2800 cm -1 , medium absorption of OH stretching, aromatic C=C, and aliphatic deformation peaks. A factor versus C factor plot indicates that it is mainly composed of type-II kerogen (organic matter). The pyrolysis GC-MS data shows the highly aliphatic nature of the solid bitumen. The overall characteristics indicate that the studied solid bitumen is of pre-oil generation type and formed from increase in thermal maturity of lignites.

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Reprint of “Solid bitumen occurrences in the Arruda sub-basin (Lusitanian Basin, Portugal): Petrographic features”

Cited by 12 publications

References 34 publications

Solid Bitumen Occurrences in the Pyrenean Basin (Southern France): A Case Study across the Pliensbachian–Toarcian Boundary

Solid Bitumen Occurrences in the Pyrenean Basin (Southern France): A Case Study across the Pliensbachian–Toarcian Boundary

Hydrocarbon generation potential of late cretaceous shales and carbonates in Hekimhan basin and genetic relationships with Karadere oil seep (Eastern Anatolia Region, Turkey)

Characterization of Solid Bitumen from Panandhro Lignite (Western India) Based on FTIR and Pyrolysis GC-MS Study

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