Article
Energy & Fuels
Wei He, Shu Tao, Lianfu Hai, Rui Tao, Xiangcheng Wei, Lei Wang
Summary: The oil shales in the Tanshan area were formed in a warm-humid climate and reducing environment. Despite low deposition rates, the continuous input of terrigenous debris and higher plant debris resulted in the enrichment of organic matter.
Article
Geosciences, Multidisciplinary
John Gama, Lorenz Schwark
Summary: This study presents a comprehensive geochemical analysis of source rock intervals in the Mandawa Basin, Tanzania, to determine organic matter types and quality. The results show that the organic matter richness is low and the potential for oil generation is generally fair. The study also reveals high spatial variability in organic matter quality in the region.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Environmental Sciences
Gang Zhou, Yu Ma, Ruixin Song, Yating Hu, Yongwei Liu, Bingyou Jiang, Biao Sun
Summary: To understand the dust dispersion and pollution laws in coal-oil shale mining faces, simulation and analysis of airflow distribution and dust emission were conducted. It was found that coal dust particles were concentrated near the roof of the hydraulic support, while oil shale dust particles were mainly below the breathing zone. Both coal and oil shale dust particles heavily polluted the areas near the shearer drum. Wet dust collectors and multi-nozzle atomization devices were designed to remove the dust effectively, with removal rates of 83.4% and 87.5% respectively.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Geochemistry & Geophysics
Guangbo Chen, Tan Li, Guohua Zhang, Pengcheng Teng, Bin Gong
Summary: This study explored the distribution law of energy in coal-rock system by analyzing the mechanical characteristics of coal-rock combined body, demonstrating that components of greater hardness difference are more prone to rock burst. Before destruction, energy mainly accumulates on the weaker component while the harder components act as clamping devices.
Article
Energy & Fuels
F. A. Agbor, S. Mhlambi, N. A. Teumahji, W. A. Sonibare, J. M. van Bever Donker
Summary: Among the various geochemical methods in hydrocarbon exploration, the technique combining total organic carbon content (TOC) and Rock-Eval pyrolysis is widely used due to its ability to rapidly provide important information about source rocks, thermal maturity levels, and generative potentials. This study analyzed data from potential source units in the southern depocenter of the Pletmos Sub-basin using this geochemical method. The analysis identified five significant source rock intervals of Kimmeridgian to Turonian ages, consisting of shales with both indigenous and non-indigenous organic matter. The petroleum generating potential of these source rocks varied, with the Aptian and Kimmeridgian intervals having the highest and lowest potential, respectively. The maturity parameters T-max and Ro indicated maturities ranging from immature to a late stage of maturity, with possible links between maturity and high heat flow during the Late Cretaceous. The petroleum potential trend increased with depth, showcasing mixed hydrocarbon generating potential. Hydrocarbon typing interpretation is recommended to support further well-testing analysis.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Energy & Fuels
Chao Liu, Wanchun Zhao, Lidong Sun, Xiaolian Wang, Youhai Sun, Ying Zhang, Jingjing Zhang, Lei Zhang, Jijun Li
Summary: This study analyzed the geochemical characteristics of the newly discovered K(1)yc(4) oil-type shale in the SSC depression, confirming its good to excellent hydrocarbon potential for petroleum exploration. The results expand the petroleum exploration horizon in the northern Songliao Basin, providing evidence of oil-prone shale in the Lower Cretaceous strata.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Jiyuan You, Yiqun Liu, Yijun Li, Dingwu Zhou, Qinghua Zheng, Yiyao Yang, Jian Shi, Haofeng Gao
Summary: The Chang 7 oil shales in the Triassic Yanchang Formation show significant positive anomalies in Cs, U, Th, Pb, and Mn, and negative anomalies in Eu and Ta. The TOC values vary across different sections, and there is a strong correlation between hydrothermal input intensity and TOC content.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Khalid Latif, Muhammad Hanif, Syed Anjum Shah, Irfan U. Jan, Muhammad Younis Khan, Hamid Iqbal, Abdullah Khan, Syed Mamoon Siyar, Mohibullah Mohibullah
Summary: In this study, the hydrocarbon generation potential of coal and coaly shale samples from Attock-Cherat Range in Pakistan was evaluated optically and analytically. The samples are likely in the gas window and of good quality, based on petrographical and geochemical analysis.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Energy & Fuels
Wen Xu, Xuanlong Shan, Jian Yi, Guoli Hao, Rongsheng Zhao, Jiahui Li, Wentong He
Summary: Mastering the reaction process of underground pyrolysis is vital for oil shale in-situ conversion projects. However, directly testing the kerogen maturity and judging the pyrolysis reaction process according to oil and gas product maturity is challenging in in-situ conversion projects. This study aims to simulate and analyze oil shale and pyrolysis oil samples from the Nenjiang Formation in the southern Songliao Basin to identify the dynamic evolution characteristics of carbon isotope fractionation during oil shale pyrolysis and establish a response relationship. The study has developed a set of dynamic monitoring methods for the in-situ conversion of oil shale, laying a theoretical foundation for efficient and stable operation of such projects.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Chemistry, Multidisciplinary
Yue Feng, Enze Wang, Changrong Li, Boran Wang, Guoyong Liu
Summary: The substantial heterogeneity in lacustrine shale poses challenges to oil exploration, but a clear and effective resource evaluation standard can reduce exploration risk and cost. However, the current evaluation standards may overlook factors like thermal maturity and kerogen type, leading to misjudgment of shale oil reservoirs. This study proposes a method based on mass balance and a statistical model to calculate oil movable threshold (OMT) values, and applies it to evaluate the resource quality of shale in the Shahejie Formation in China's Bohai Bay Basin.
Article
Geosciences, Multidisciplinary
Ziqi Feng, Fang Hao, Jinqiang Tian, Shangwen Zhou, Dazhong Dong, Shipeng Huang
Summary: This review systematically analyzes the geochemical characteristics of Silurian shale gas in the Sichuan Basin, including its special isotope anomalies. The dominant component of over-mature Longmaxi Formation shale gas is methane, with high CH4 and low C2+ contents. The geochemical anomalies mainly refer to abnormally enriched delta C-13(1) values and full reversal, resulting in deviations in carbon isotope composition and light hydrocarbon data. Understanding the geological processes that led to these anomalies provides valuable insights for studying late-stage gas generation.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Amr S. Deaf, Awad A. Omran, Eman S. Zain El-Arab, Abu Bakr F. Maky
Summary: This study analyzed the upper Khatatba Formation in a well in northern Egypt and found potential shale gas resources in the region. However, the present high thermal maturation has resulted in lower quality of active organic matter.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Engineering, Geological
Mateusz Maslowski, Malgorzata Labus
Summary: This paper presents experiments on proppant embedment phenomenon on shale rock from the Baltic Basin, an unconventional gas deposit region. The results show that proper selection of proppant and fracturing fluid can reduce fracture width and increase conductivity. The novel laboratory imaging procedure introduced in the article is a valuable method for assessing the vulnerability of reservoir rocks to embedment.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Yang Li, TianQi Qin, Zhong Liang, Chunshan Zheng
Summary: In this study, the biological methanogenic potential of coal and oil samples in an oil-bearing coal seam was analyzed. The results showed that the biological methanogenic efficiency of the coal sample increased over time, while the oil sample had a higher methanogenic potential. The microbial composition and metabolites specific to coal and oil were also investigated. This study provides valuable information for eliminating oil from coal in oil-bearing coal seams and reducing the risks associated with coal seam mining.
Article
Geosciences, Multidisciplinary
Luanxiao Zhao, Jinwan Zhu, Xuan Qin, Gong Rui, Zhenjia Cai, Fengshou Zhang, De-hua Han, Jianhua Geng
Summary: Understanding and modeling the elastic and anisotropic responses of organic shale is crucial for interpreting sonic and seismic data. However, current rock physics modeling of organic shales either ignore or qualitative consider the effects of thermal maturity. This paper presents a quantitatively maturity-constrained rock physics model for shale, which combines organic geochemistry with rock physics modeling. The developed model demonstrates the importance of considering the effects of thermal maturity on the elastic properties of organic shale.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Madyan M. A. Yahya, Mohammed H. Hakimi, Mahmoud A. Galmed, Mohamed N. El-Sabrouty, Yasamin K. H. Ibrahim
ARABIAN JOURNAL OF GEOSCIENCES
(2018)
Article
Energy & Fuels
Mohammed Hail Hakimi, Adel M. Al-Matary, Osman Salad Hersi
Article
Geosciences, Multidisciplinary
Mohammed Hail Hakimi, Adel M. Al-Matary, Osman Salad Hersi
JOURNAL OF AFRICAN EARTH SCIENCES
(2018)
Article
Geosciences, Multidisciplinary
Adel M. Al-Matary, Mohammed Hail Hakimi, Sadam Al Sofi, Yousif A. Al-Nehmi, Mohammed Ail Al-Haj, Yousif A. Al-Hmdani, Ahmed A. Al-Sarhi
JOURNAL OF AFRICAN EARTH SCIENCES
(2018)
Article
Geosciences, Multidisciplinary
Abdullah Al-hasani, Mohammed Hail Hakimi, Ismail M. Saaid, Ahmed M. A. Salim, Siti Qurratu Aini Mahat, Abdelazim A. Ahmed, Abubakar Abu Bakar Umar
JOURNAL OF AFRICAN EARTH SCIENCES
(2018)
Article
Energy & Fuels
Mohammed Hail Hakimi, Ahmed Askar Najaf, Rzger A. Abdula, Ibrahim M. J. Mohialdeen
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2018)
Article
Geosciences, Multidisciplinary
Mohammed Hail Hakimi, Abdulwahab S. Alaug, Abdulghani F. Ahmed, Madyan M. A. Yahya
JOURNAL OF AFRICAN EARTH SCIENCES
(2019)
Article
Energy & Fuels
Yousif M. Makeen, Wan Hasiah Abdullah, Muhammad Nadzmi Abdul Ghofur, Habeeb A. Ayinla, Mohammed Hail Hakimi, Xuanlong Shan, Khairul Azlan Mustapha, Mustaffa Kamal Shuib, Ye Liang, Nor Syazwani Zainal Abidin
Article
Energy & Fuels
Mohammed Hail Hakimi, Abdulwahab S. Alaug, Gamal A. Alramisy, Abdulghani F. Ahmed
PETROLEUM SCIENCE AND TECHNOLOGY
(2019)
Article
Energy & Fuels
Mohammed Hail Hakimi, Abdulwahab S. Alaug, Hussain J. Al Faifi, Gamal A. Alramisy, Aref A. Lashin
PETROLEUM SCIENCE AND TECHNOLOGY
(2019)
Article
Energy & Fuels
Mohammed Hail Hakimi, Ismail M. Ismail, Aref A. Lashin, El-Khedr H. Ibrahim
PETROLEUM SCIENCE AND TECHNOLOGY
(2019)
Article
Energy & Fuels
Mohammed Hail Hakimi, Abdulwahab S. Alaug, Wafaa E. Afify, Mohamed M. El Nady, Aref A. Lashin
PETROLEUM SCIENCE AND TECHNOLOGY
(2019)
Article
Energy & Fuels
Mohammed Hail Hakimi, Abdulwahab S. Alaug, Ibrahim M. J. Mohialdeen, Ali Y. Kahal, Hesham Abdulelah, Yousif Taha Hadad, Madyan M. A. Yahya
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2019)
Article
Geosciences, Multidisciplinary
Mohammed Hail Hakimi, Abdulwahab S. Alaug, Aref A. Lashin, Ibrahim M. J. Mohialdeen, Madyan M. A. Yahya, Mostafa M. Kinawy
MARINE AND PETROLEUM GEOLOGY
(2019)
Article
Energy & Fuels
Mohammed Hail Hakimi, Wan Hasiah Abdullah, Osman S. Hersi, Aref A. Lashin, Mohamed M. El Alfy, Yousif M. Makeen, Mostafa M. Kinawy, Baleid A. Hatem
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)