Article
Energy & Fuels
Lin-Qi Zhu, Jin Sun, Xue-Qing Zhou, Qing-Ping Li, Qi Fan, Song-Lin Wu, Shi-Guo Wu
Summary: This study explored the clay content, porosity, saturation, and hydrate-enriched layer identification of a logging-based hydrate reservoir using well W8 in the Qiongdongnan Basin. The study found that considering the effect of clay content on log response is necessary in the logging evaluation of hydrate reservoirs.
Article
Geosciences, Multidisciplinary
Dongyu Zheng, Sixuan Wu, Mingcai Hou
Summary: This study compared different prediction models for TOC in hydrocarbon-rich shales and found that the fully connected deep network (FCDN) provided the most accurate predictions, demonstrating its ability to extract complex relationships between well logs and TOC values. The results suggest the great potential of deep learning techniques in evaluating unconventional resources.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Energy & Fuels
Wenrui Shi, Zhansong Zhang, Zisang Huang, Shu Jiang, Jincai Shen, Aiguo Feng, Hongyan Zhao, Jun Xing
Summary: This study established two nonresistivity gas saturation models based on dipole array acoustic/conventional logging parameters and total organic carbon (TOC) to address the issue of inaccurate gas saturation values in low-resistivity shale gas reservoirs in the Fuling area. The models were verified to have higher accuracy than the Archie-type resistivity model and show potential for wider applications.
Article
Energy & Fuels
Mohammad Zeyghami, Mohammad Taghizadeh Sarvestani
Summary: The main objective of net pay determination is to exclude non-reservoir intervals so that better results are obtained in reservoir characterization, hydrocarbon in-place calculations, and dynamic flow simulation. This study presents different methods for net pay determination, their strengths, limitations, and input data, along with a new procedure. The proposed methodology considers both rock and fluid properties and validates the results.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Energy & Fuels
Norbert P. Szabo, Rafael Valadez-Vergara, Sabuhi Tapdigli, Aja Ugochukwu, Istvan Szabo, Mihaly Dobroka
Summary: A multivariate statistical method based on factor analysis is proposed for quantitatively determining the total organic content of shale formations, offering an effective tool for evaluating organic matter content in unconventional reservoirs.
Article
Energy & Fuels
Kelly M. Guan, Cynthia M. Ross, Anthony R. Kovscek
Summary: The study utilized 2D and 3D imaging techniques to characterize immature shale samples before and after maturation in a pyrolysis cell. A series of electron microscopy and X-ray techniques were used to determine the mineralogical and structural properties of each shale sample, and successful maturation was confirmed using programmed pyrolysis. New crack development in organic matter-hosted regions and grain boundaries, as well as significant growth of pre-existing microcracks and defects, were observed after maturation.
Article
Thermodynamics
Jianguang Wei, Erlong Yang, Jiangtao Li, Shuang Liang, Xiaofeng Zhou
Summary: This paper investigates the complex interaction mechanism between oil and water in shale reservoirs, and reveals the differences in fluid enrichment mechanisms and evolution model characteristics within multi-level pore networks.
Article
Engineering, Chemical
Saad Alatefi, Reda Abdel Azim, Ahmad Alkouh, Ghareb Hamada
Summary: The accurate estimation of reservoir porosity is crucial for assessing hydrocarbon reserves and evaluating reservoir economic potential. This study evaluated the integration of artificial intelligence techniques, well logs, and core analysis for accurate porosity prediction in carbonate reservoirs. A large database of well-log records and core measurements were integrated with machine learning techniques, achieving high accuracy and outperforming other models. Additionally, an AI-based correlation was introduced for porosity estimation, providing a promising level of accuracy and ease of use without prior experience in machine learning models.
Article
Engineering, Chemical
Bo Shen, Yunhe Tao, Gang Wang, Haitao Fan, Xindong Wang, Ke Sun
Summary: Shale oil reservoirs differ from conventional reservoirs in various aspects and pose challenges to exploration and development. Identifying optimal locations is crucial for successful exploration. This study proposes a new method to assess shale oil mobility based on free oil porosity derived from logging data. The method is validated by comparing results with 2D-NMR and laboratory experiments, showing good agreement and confirming its effectiveness and reliability.
Article
Environmental Sciences
Emad A. Abd El Aziz, Mohamed M. Gomaa
Summary: Understanding basic petrophysical properties can enhance the recovery of residual oil saturation and improve reservoir management. A study was conducted in the Issaran Field, South Gharib Formation, West of the Gulf of Suez, southeast Egypt, using petrophysical analysis of well logs and core samples. The reservoir in this area is primarily composed of carbonates and shows laminated rock characteristics. The typical values of oil saturation and porosity are 20-30% and 7-10% respectively. These findings can help enhance oil recovery.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Thermodynamics
Honglei Zhan, Fankai Qin, Sitong Chen, Ru Chen, Zhaohui Meng, Xinyang Miao, Kun Zhao
Summary: This study investigates the pyrolytic degradation mechanism of oil shale through various analytical techniques, revealing a two-step pyrolysis process and providing theoretical support for underground in-situ pyrolysis technology and underground oil shale development.
Article
Chemistry, Multidisciplinary
Daniel Asante Otchere, Mohammed Abdalla Ayoub Mohammed, Tarek Omar Arbi Ganat, Raoof Gholami, Zulkifli Merican Aljunid Merican
Summary: Accurately measuring wettability is crucial for understanding reservoir parameters and optimizing reservoir potential, recovery, and management. This study introduces a new mathematical model based on Amott-USBM wettability measurement and field NMR T2LM log, which shows promising results in characterizing wettability at both lab and field scales.
APPLIED SCIENCES-BASEL
(2022)
Article
Geochemistry & Geophysics
Hao Chen, Jianfei Wei, Hanlie Cheng, Qiang Qin, Ying Chen, Linqiang Zhang
Summary: Formation pressure decreases during fracturing fluid flowback and gas production. The stress sensitivity of fractures affects their permeability and gas well productivity. This study investigates the stress sensitivity of proppant-containing fractures with different roughness and its impact on well productivity. Experimental samples with varying proppant concentrations and fracture surfaces are used to quantify stress sensitivity. The results show that proppant concentration and fracture surface roughness significantly influence fracture permeability and stress sensitivity, impacting well productivity.
Article
Geosciences, Multidisciplinary
Guodong Wei, Wei Wang, Liang Feng, Xiucheng Tan, Chuan Yu, Hualian Zhang, Zhiping Zhang, Shengxiu Wang
Summary: China has seen huge success in commercial production from marine organic-rich shale, but faces challenges in exploring lacustrine organic-rich shale. A study on the Lower Jurassic lacustrine shales in the eastern Sichuan Basin revealed different subfacies types and exploration prospects. The presence of different types of lacustrine shales with varying characteristics highlights the potential for shale hydrocarbon exploration and development in the region.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Elshad Aslanov, Saad F. Alafnan, Mohamed Mahmoud, Abdulazeez Abdulraheem, Murtada Saleh Aljawad
Summary: Assessing the mechanical properties of organic matters in unconventional formations is crucial for understanding the geomechanics of source rocks. This study utilized molecular simulation to examine the properties of kerogen and bitumen, revealing their similar mechanical behavior to organic-based materials. Additionally, structures containing bitumen exhibited higher Poisson's ratio, indicating greater resistance to degradation under applied stresses. These findings underscore the importance of considering both bitumen and kerogen when modeling the petrophysics and mechanical behavior of organic matters.
Article
Environmental Sciences
Sahand Seraj, Mahmoud Reza Delavar, Reza Rezaee
Summary: This study proposes a method to manage spatial uncertainties during the hydrocarbon exploration process using a geospatial information system and soft computing methods, calculating the geologic risk interval through uncertainty estimation to improve the quality of risk analysis.
GEOCARTO INTERNATIONAL
(2021)
Article
Geosciences, Multidisciplinary
J. Zou, R. Rezaee
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2020)
Article
Energy & Fuels
Pooya Hadian, Reza Rezaee
Article
Geochemistry & Geophysics
Yadong Zhang, Reza Rezaee, Tobias M. Muller, Guangjie Zheng, Jimmy X. Li, Yu Fan, Bo Zeng, Xiaojin Zhou
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2020)
Article
Energy & Fuels
Jie Zou, Reza Rezaee, Yujie Yuan, Kouqi Liu, Quan Xie, Lijun You
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Energy & Fuels
Strahinja Markovic, Jonathan L. Bryan, Vladislav Ishimtsev, Aman Turakhanov, Reza Rezaee, Alexey Cheremisin, Apostolos Kantzas, Dmitry Koroteev, Sudarshan A. Mehta
Article
Energy & Fuels
Lukman M. Johnson, Reza Rezaee, Gregory C. Smith, Nicolaj Mahlstedt, Dianne S. Edwards, Ali Kadkhodaie, Hongyan Yu
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2020)
Article
Geochemistry & Geophysics
Jiang Jia, Shizhen Ke, Reza Rezaee, Junjian Li, Feng Wu
Summary: The study measured and fitted the complex resistivity spectra of 16 artificial sandstone samples using the Cole-Cole model, showing frequency exponents primarily between 0.82 and 0.88, with a segmented trend of decrease followed by an increase. The frequency exponent exhibited linear or exponential relationships with porosity, cementation index, and formation factors, indicating potential for studying oil-water distribution. Moreover, the frequency exponent decreased with clay content in the samples and was found to be independent of the ion type in the solution.
GEOPHYSICAL PROSPECTING
(2021)
Article
Geosciences, Multidisciplinary
Jimmy X. Li, Reza Rezaee, Tobias M. Mueller, Mohammad Sarmadivaleh
Summary: Research has shown that the flow permeability of porous media is influenced by the pore size distribution, which is often ignored in traditional models. By developing a new dynamic permeability model that explicitly considers the pore size distribution, the impact of pore size distribution on permeability can be more accurately understood and utilized in permeability determination processes.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Energy & Fuels
Pei Li, Jinchuan Zhang, Reza Rezaee, Wei Dang, Xuekai Li, Cut Aja Fauziah, Haikuan Nie, Xuan Tang
Summary: This study investigated the wetting behavior of Shanxi-Taiyuan shale, showing different wetting properties under different conditions. The wetting of shale is influenced by the organic content, carbonate, and clay mineral content, with a linear negative correlation between surface roughness and wetting behavior. The contradictory wetting behaviors between different methods can be explained by differences in conditions and surface characteristics.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Rahim Kadkhodaie, Ali Kadkhodaie, Reza Rezaee
Summary: This study focused on investigating the reservoir heterogeneity of tight sandstone formations in the Whicher Range field of the Perth Basin. By analyzing rock types through core data and velocity deviation logs derived from the Wyllie equation, three main rock types with different pore characteristics were identified. The evaluation showed that RT3, associated with medium to coarse and gravely sandstones, significantly contributes to high production reservoir zones.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Reza Rezaee
Summary: The discovery of a large accumulation of natural hydrogen in Mali has prompted the search for similar hydrogen accumulations in other countries. The generation of hydrogen in Mali is linked to very old iron-rich basement rocks, and similar features may exist in certain regions of Western Australia. These regions appear to have the necessary elements for developing a complete Hydrogen System.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Muhammad Atif Iqbal, Reza Rezaee, Carsten Laukamp, Bobby Pejcic, Gregory Smith
Summary: Understanding the facies heterogeneity of shale reservoirs is crucial for successful exploration and development. This study on the Goldwyer-III shale utilizes a unique approach integrating various data sources to reveal the high heterogeneity in sedimentary features, organic richness and mineral composition. The results show that the shale can be classified into four distinct facies, each with varying levels of total organic carbon and mineralogical properties.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Jimmy Xuekai Li, Reza Rezaee, Tobias M. Muller, Mahyar Madadi, Rupeng Ma, Mohammad Sarmadivaleh
Summary: Understanding seismic wave propagation in granular porous media is crucial for subsurface characterization. This study investigates the influence of wettability conditions on wave propagation in (partially) saturated granular porous media through laboratory experiments. The results reveal that the presence of liquid bridges in water-wetting conditions reinforces force chains and increases the P-wave velocity, leading to incoherent scattering. In contrast, gas-wetting conditions prevent the formation of liquid bridges, resulting in negligible incoherent scattering.
Article
Energy & Fuels
Afzal Mir, Muhammad Rustam Khan, Ali Wahid, Muhammad Atif Iqbal, Reza Rezaee, Syed Haroon Ali, Yucel Deniz Erdal
Summary: This study analyzed the petroleum system of the Bannu Basin in Pakistan, a foreland basin of the Himalayan fold and thrust belts. The study divided the area into three zones and integrated seismic and well log data. The results showed higher sedimentation levels and abrupt sedimentation due to Himalayan orogeny. Potential source rocks and local faults were identified as potential traps for hydrocarbon preservation. Specific formations were identified as potential reservoir rocks in different zones. Post-Miocene sedimentation was found to be a significant event for hydrocarbon generation and accumulation.