Organic geochemical and petrographic characteristics of the oil shales in the Lajjun area, Central Jordan: Origin of organic matter input and preservation conditions

Hakimi, Mohammed Hail; Abdullah, Wan Hasiah; Alqudah, Mohammad; Makeen, Yousif M.; Mustapha, Khairul Azlan

doi:10.1016/j.fuel.2016.04.070

Cited by 106 publications

(45 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The significant quantities of algal in the form of telalginite and lamalginite ( Fig. 5a-c,e) indicate marine-reducing conditions during the deposition of the analyzed bituminous shales [13][14][15] . The occurrence of foraminifera assemblages in the studied samples ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Geochemical and organic petrographic characteristics of high bituminous shales from Gurha mine in Rajasthan, NW India

Singh

Hakimi

Kumar

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

A high bituminous shale horizon from the Gurha mine in the Bikaner sub-basin of the Rajasthan District, NW India, was studied using a collection of geochemical and petrological techniques. This study investigated the nature and environmental conditions of the organic matter and its relation to the unconventional oil-shale resources of the bituminous shale. The analyzed shales have high total organic carbon and total sulfur contents, suggesting that these shale sediments were deposited in a paralic environment under reducing conditions. The dominant presence of organic matter derived from phytoplankton algae suggests warm climatic marine environment, with little connection to freshwater enhancing the growth of algae and other microorganisms. The analyzed bituminous shales have high aquatic-derived alginite organic matters, with low Pr/Ph, Pr/n-C17, and Ph/n-C18 ratios. It is classified as Type II oil-prone kerogen, consistent with high hydrogen index value. Considering the maturity indicators of geochemical Tmax (< 430 °C) and vitrinite reflectance values less than 0.40%VRo, the analyzed bituminous shale sediments are in an immature stage of the oil window. Therefore, the oil-prone kerogen Type II in the analyzed bituminous shales has not been cracked by thermal alteration to release oil; thus, unconventional heating is recommended for commercial oil generation.

show abstract

Section: Resultsmentioning

confidence: 99%

Geochemical and organic petrographic characteristics of high bituminous shales from Gurha mine in Rajasthan, NW India

Singh

Hakimi

Kumar

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Organic maturity is directly related to vitrinite reflectance (Ro) determined by microscopy with white light and oil eyepiece (Christoph, et al, 2015;Hakimi et al, 2016). The distribution of R o is generally in the range from 0.59% to 0.83%.…”

Section: Organic Matter Type and Thermal Maturitymentioning

confidence: 99%

Organic Geochemical and Petrographic Characteristics of the Coal Measure Source Rocks of Pinghu Formation in the Xihu Sag of the East China Sea Shelf Basin: Implications for Coal Measure Gas Potential

Wang

Qin

Liu

et al. 2020

Acta Geologica Sinica (Eng)

View full text Add to dashboard Cite

Coal measure source rocks, located in the Xihu Sag of the East China Sea Shelf Basin, were analyzed to define the hydrocarbon generation potential, organic geochemistry/petrology characteristics, and coal preservation conditions. The Pinghu source rocks in the Xihu Sag are mainly gas‐prone accompany with condensate oil generation. The coals and shales of the Pinghu Formation are classified from “fair” to “excellent” source rocks with total organic carbon (TOC) contents ranging from 25.2% to 77.2% and 1.29% to 20.9%, respectively. The coals are richer in TOC and S1+S2 than the shales, indicating that the coals have more generation potential per unit mass. Moreover, the kerogen type of the organic matter consists of types II‐III and III, which the maturity Ro ranges from 0.59% to 0.83%. Petrographically, the coals and shales are dominated by vitrinite macerals (69.1%–96.8%) with minor proportions of liptinite (2.5%–17.55%) and inertinite (0.2%–6.2%). The correlation between maceral composition and S1+S2 indicates that the main contributor to the generation potential is vitrinite. Therefore, the coals and shales of the Pinghu Formation has good hydrocarbon generation potential, which provided a good foundation for coal measure gas accumulation. Furthermore, coal facies models indicates that the Pinghu coal was deposited in limno‐telmatic environment under high water levels, with low tree density (mainly herbaceous) and with low‐moderate nutrient supply. Fluctuating water levels and intermittent flooding during the deposition of peat resulted in the inter‐layering of coal, shale and sandstone, which potentially providing favorable preservation conditions for coal measure gas.

show abstract

“…Typically, regular steranes are derived from sterols, known as constituents of the cell membranes in all eukaryotes. Algae are believed to be the predominant primary producers of C 27 sterols, while C 29 sterols are more typically associated with land plants [32][33][34][35]. However, C 28 steranes are suggested to be derived from phytoplankton and zooplankton.…”

Section: Organic Matter Inputmentioning

confidence: 99%

Sedimentary and Geochemical Characteristics of Oil Shale in the Permian Lucaogou Formation in the Southeastern Junggar Basin, Northwest China: Implications for Sedimentary Environments

Zhang¹,

Li²,

Yin³

2018

Oil Shale

View full text Add to dashboard Cite

In this study, the sedimentary and geochemical characteristics of oil shale in the Lower and the Upper Member of the Permian Lucaogou Formation in the southeastern Junggar Basin, Northwest China, were investigated. Mineral and bulk chemical compositions, sedimentary facies and distribution of oil shale show that in the Lower Member it is rich in organic matter, but in the Upper Member, organic-poor. The distribution area of deep lake subfacies and oil shale in the Lower Member is larger than that in the Upper Member. The sedimentary modes of these two members were estimated using geochemical parameters, such as Sr/Cu, the chemical index of alteration (CIA), Ni/Co, V/Sc and (C 27 + C 28)/C 29 regular steranes. The organic-rich oil shale in the Lower Member of the Lucaogou Formation formed in the more humid climate and under oxidative conditions, its organic matter derived mainly from algae. On the other hand, the organic-poor oil shale in the formation's Upper Member formed in the humid climate and under more oxidative conditions, while the input of land plants to its organic matter was high and that of algae low.

show abstract

Organic geochemical and petrographic characteristics of the oil shales in the Lajjun area, Central Jordan: Origin of organic matter input and preservation conditions

Cited by 106 publications

References 39 publications

Geochemical and organic petrographic characteristics of high bituminous shales from Gurha mine in Rajasthan, NW India

Geochemical and organic petrographic characteristics of high bituminous shales from Gurha mine in Rajasthan, NW India

Organic Geochemical and Petrographic Characteristics of the Coal Measure Source Rocks of Pinghu Formation in the Xihu Sag of the East China Sea Shelf Basin: Implications for Coal Measure Gas Potential

Sedimentary and Geochemical Characteristics of Oil Shale in the Permian Lucaogou Formation in the Southeastern Junggar Basin, Northwest China: Implications for Sedimentary Environments

Contact Info

Product

Resources

About