Article
Engineering, Chemical
Jing Wang, Fawang Ye, Chuan Zhang, Zhaodong Xi, Carlos Sierra Fernandez
Summary: This study comprehensively examines the sedimentary environment, distribution of sand bodies, and physical characteristics of tight sandstone reservoirs in the Carboniferous-Permian coal-bearing sedimentary succession in the eastern edge of the Ordos Basin. The results indicate that the reservoir quality is relatively poor, primarily due to compaction and cementation reducing porosity. Dissolution has a limited effect on porosity but contributes to the tight nature of the reservoirs.
Article
Geosciences, Multidisciplinary
Dennis Quandt, Benjamin Busch Christina Schmidt, Christina Schmidt
Summary: The study on the Buntsandstein sandstones in Germany reveals that the reservoir system is heterogeneous and influenced by various factors, with grain size and quartz content as the key controls on reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Rui Zhang, Guangsheng Qin, Minglong Nie
Summary: This study examines the chlorite clay film in Chang 6 Formation sandstones in the Huaqing region using various analytical methods. The results indicate that the chlorite clay film is closely related to strong hydrodynamic deposition conditions, but it does not prevent cementation or protect intergranular pores.
Article
Geosciences, Multidisciplinary
Wenchao Dou, Mian Lin, Luofu Liu, Langbo Jia
Summary: This study investigated the relationship between chlorite rims and porosity evolution in the Chang 7 sandstones of the Upper Triassic Yanchang Formation in the Ordos Basin in northcentral China. The results showed that chlorite rims inhibited the formation of quartz cementation, but other factors such as compaction and other cements also controlled the porosity evolution of sandstones. Chlorite rims only played an important role in porosity preservation when quartz cementation was the main process of porosity destruction.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Energy & Fuels
Ran Lin, Zhihao Yu, Jinzhou Zhao, Caili Dai, Yongpeng Sun, Lan Ren, Mengke Xie
Summary: This study investigates the impact of CO2 flooding on tight sandstones, revealing that the corrosion process enhances porosity and liquid permeability while reducing the pore and throat diameter for movable fluids. XRD analysis indicated main corrosion minerals to be calcite, dolomite, and feldspar, with significantly increased corrosion pores post-reaction. These findings suggest improved formation petrophysical properties associated with CO2 flooding in tight sandstones, providing a theoretical basis for the efficient development of tight oil reservoirs.
Article
Geosciences, Multidisciplinary
Jian Li, Xiang Zhang, Jingchun Tian, Qingshao Liang, Tongsheng Cao
Summary: The research examines the impact of deposition and diagenesis on sandstone reservoir quality, highlighting how depositional factors can influence the reservoir quality by affecting diagenesis. It emphasizes the importance of grain size, sorting, and sedimentary thickness in controlling sandstone reservoir quality.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Engineering, Multidisciplinary
Ya Yang
Summary: This paper investigates the sandstone reservoir characteristics of the red beds in the southeast of Jiyang Sag, analyzing the influence of sedimentary environment and diagenesis on its reservoir properties. The study reveals that the red bed sandstone predominantly consists of arkose, quartz-feldspar, and feldspar-quartz graywackes, exhibiting good porosity and permeability. Three types of reservoir sand bodies are found in the study area, with fan delta deposits showing better storage performance.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Kai Liu, Ren Wang, Wanzhong Shi, Anna Trave, Juan Diego Martin-Martin, Vinyet Baques, Rong Qi, Jianwei Lin, Hui Ye
Summary: This study investigates the diagenetic evolution and its impact on reservoir quality and heterogeneity of the Upper Triassic Chang 8 sandstone reservoir in the south-western Ordos Basin. The results show that the reservoir quality is relatively poor due to compaction and carbonate and chlorite cementation. Sandstones with high porosity and permeability can be considered as favorable reservoirs for tight oil exploration.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geology
Hao Wu, Youliang Ji, Zhiwei Du, Yong Zhou, Juan Zou, Yunzhao Zhang, Wei Du, Haiqing Liu
Summary: This study investigates the evolution and controls of reservoir quality in the Oligocene sandstones in the Nanpu Sag, Bohai Bay Basin, China. The sandstones exhibit highly variable reservoir quality with the formation of three anomalously high porosity/permeability zones. Factors such as petroleum emplacement and particle types influence the pore types and permeability.
SEDIMENTARY GEOLOGY
(2022)
Article
Engineering, Chemical
Pengbao Zhang, Shuheng Tang, Donglin Lin, Yanjun Chen, Xiaoxuan Wang, Zhenxing Liu, Feng Han, Peng Lv, Zhoupeng Yang, Xiaoqu Guan, Jiahua Hu, Yan Gao
Summary: This study analyzed the petrological and reservoir characteristics of the sandstone reservoirs in the He8 member of the Lower Permian Shihezi Formation in the southern Ningwu Basin. The impact of mineral composition and diagenesis type on reservoir porosity was evaluated, and a multiple linear regression prediction model was developed to predict the distribution of promising sandstone reservoirs in the study area.
Article
Energy & Fuels
Qamar U. Z. Zaman Dar, Renhai Pu, Christopher Baiyegunhi, Ghulam Shabeer, Rana Imran Ali, Umar Ashraf, Zulqarnain Sajid, Mubashir Mehmood
Summary: The study investigates the diagenetic impacts on reservoir properties of sandstones in the Early Cretaceous Lower Goru Formation in the Lower Indus Basin of Pakistan. The results reveal that chlorite is the dominant diagenetic constituent affecting the porosity of the sandstones. Different diagenetic events like compaction, cementation, dissolution, and mineral replacement have significantly altered the original rock properties and reservoir characteristics of the sandstones.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Yang Li, Aiping Fan, Renchao Yang, Yipu Sun, Nils Lenhardt
Summary: This study aims to determine the sedimentary characteristics and main controlling factors of the Upper Paleozoic Shanxi Formation reservoirs in the southern Ordos Basin of China. The results indicate that the study area is dominated by delta facies, with different sedimentary microfacies impacting the physical reservoir properties.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Wenhuan Li, Tailiang Fan, Zhigian Gao, Zhixiong Wu, Ya'nan Li, Xinlei Zhang, Heng Zhang, Fangda Cao
Summary: The Lower Jurassic reservoir in the Niudong area of the northern margin of Qaidam Basin is a typical low permeability sandstone reservoir. The reservoir quality is mainly influenced by diagenesis, with compaction and cementation causing porosity loss and dissolution increasing porosity. Structural features of the study area, like nose uplift structure and developed fractures, provide favorable conditions for reservoir space and migration channels, ultimately improving the reservoir permeability.
Article
Energy & Fuels
Jianting Xu, Chunyong Yu, Dan Qi, Rui Yang, Hui Yu, Weihang Zhang, Tao Wang
Summary: This study investigates the characteristics of high-quality tight sandstone reservoirs in the Ordos Basin. The results show that these reservoirs have low porosity and ultralow permeability, with a good correlation between porosity and permeability. Sedimentation and diagenesis play crucial roles in the development of high-quality reservoirs, and dissolution pores and chlorite rims can improve reservoir space and physical properties.
Article
Chemistry, Multidisciplinary
Shutong Li, Xianyang Liu, Xiuqin Deng, Xiao Hui, Ruiliang Guo, Junlin Chen, Jiaqiang Zhang
Summary: The main factors leading to reservoir tightness in Chang 6 sandstones in the western Jiyuan area are high content of feldspar and rock fragments, fine grain size, and compaction during diagenesis. The study also found that dissolution plays a significant role in improving reservoir physical properties.
Article
Geosciences, Multidisciplinary
Junjie Hu, Qi Li, Juan Li, Jing Huang, Dongsheng Ge
GEOLOGICAL JOURNAL
(2016)
Article
Geosciences, Multidisciplinary
Junjie Hu, Qi Li, Chunyan Song, Shuangqing Wang, Bin Shen
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
(2017)
Article
Geosciences, Multidisciplinary
Junjie Hu, Qi Li, Nianqiao Fang, Jingyi Yang, Dongsheng Ge
ARABIAN JOURNAL OF GEOSCIENCES
(2015)
Article
Geochemistry & Geophysics
Qi Li, Tuofu Wang, Xinong Xie, Suwei Shao, Qingqing Xia
GEOPHYSICAL PROSPECTING
(2009)
Article
Geochemistry & Geophysics
Zili Zhang, Xiaomin Zhu, Qi Li, Ruifeng Zhang, Jing Zhang, Yi Huang
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2020)
Article
Geosciences, Multidisciplinary
Zili Zhang, Xiaomin Zhu, Ruifeng Zhang, Qi Li, Mo Shen, Jing Zhang
MARINE AND PETROLEUM GEOLOGY
(2020)
Article
Geosciences, Multidisciplinary
Qi Li, Zili Zhang, Jing Zhang
Summary: The study analyzed the filling process evolution of the Palaeogene Baxian sag in the Bohai Bay Basin, China, identifying four depositional systems and revealing the evolution process of rift lacustrine basins. Differences in sedimentary system category and distribution were found to be influenced by fault activity intensity and provenance supply, with boundary fault activities controlled by mantle differential convection affecting basin evolution differentially.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jian Li, Qi Li, Lianbo Zeng, Zhenjun Zhu, Xiaojun Ding, Xianming Li
Summary: Fractures can provide valuable information on the tectonic evolution of the Earth's crust. Our observations in the western Qaidam Basin, Qinghai Province, China, revealed the presence of several horizontal fractures in the Cenozoic mudstone strata. These fractures are related to vertical extension due to residual stress in the process of rapid uplift and denudation.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Jian Li, Kewei Zu, Qi Li, Daqian Zeng, Zhongchao Li, Jixi Zhang, Zhouliang Luo, Nanxin Yin, Zhenjun Zhu, Xiaojun Ding
Summary: This study used numerical simulation to investigate the in-situ stress and opening sequence of multiple fracture systems in oil and gas exploration and development. The results showed that the maximum horizontal principal stress in the study area was oriented in the E-W direction, and the in-situ stress was predominantly influenced by burial depth and lithology.
FRONTIERS IN EARTH SCIENCE
(2022)
Proceedings Paper
Energy & Fuels
Xiu Kong, Qi Li, Jun-jie Hu, Li Jun-wei Li
2015 4TH INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENTAL PROTECTION (ICEEP 2015)
(2015)
Meeting Abstract
Geochemistry & Geophysics
Q Li, SW Shao, ZM Cao, RH Kang
Article
Geosciences, Multidisciplinary
Weijiao Ma, Jinbu Li, Min Wang
Summary: The petroleum resource assessment obtained from laboratory tests on old core samples tends to underestimate the in situ resources. This study investigates the hydrocarbon loss and restoration by comparing preserved and exposed core samples. It is found that previous studies have severely underestimated the in situ hydrocarbon potential due to factors such as sample crushing and crucible waiting. A new restoration model is proposed to compensate for these losses.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Shaoyun Chen, Yongqiang Yang, Longwei Qiu, Xiaojuan Wang, Erejep Habilaxim
Summary: Quartz cement is an important authigenic mineral in the tight sandstones of the Shaximiao Formation in the Sichuan Basin. This study analyzed the silicon sources of the quartz cement using mineralogical, fluid inclusion, and geochemical data. The results showed that smectite alteration and dissolution of aluminosilicate minerals were the primary sources of silicon for quartz cementation. Contributions from volcanic material hydrolysis and pressure solution were relatively minor. The presence of chlorite films inhibited the development of quartz overgrowths and had minimal impact on reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xing Jian, Ping Guan, Ling Fu, Wei Zhang, Xiaotian Shen, Hanjing Fu, Ling Wang
Summary: This study presents a synthesis of new detrital zircon dating results and published data from the Cenozoic Qaidam basin, revealing the spatiotemporal variation of detrital zircon age populations and supporting models of synchronous deformation in northern Tibet. The study emphasizes the importance of considering textural and sedimentological parameters in zircon provenance interpretations, as well as the need for integrated provenance analysis involving other detritus components.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
A. Peketi, G. Sriram, A. Mazumdar, P. Dewangan, A. Zatale, V. Rajurkar, Gayatri Shirodkar, V. Mahale, V. Yatheesh
Summary: This study investigates 13 submarine seamounts in the southern Andaman volcanic arc and observes evidence of hydrothermal activity in one of the seamounts. The evidence includes plumes rich in dissolved gases, live chemosymbiotic organisms, and the deposition of neoforming minerals. These observations suggest the development of a new hydrothermal field in the least explored Andaman Sea.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Yanxian Zhu, Zhiliang He, Xiaowen Guo, Long Li, Sheng He, Jian Gao, Shuangjian Li, Huili Li
Summary: This study investigates the fluid evolution history of the hydrothermal dolomite reservoir in the Middle Permian Maokou Formation in the Sichuan Basin. The results reveal the diagenetic sequences, mineral origins, salinity history, and pressure evolution using various analytical techniques. The findings provide important insights into the gas charge, escape, and preservation conditions of the reservoir.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Rafaella de Carvalho Antunes, Julia Campos Guerrero, Ricardo Jorge Jahnert
Summary: This study presents a detailed sedimentary model and identifies various sedimentary facies associations in the coquina deposits of the Itapema Formation in the offshore pre-salt Buzios Field of the Santos Basin. These facies associations were primarily influenced by waves and currents and reflect a complex depositional system.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Kang Meng, Tongwei Zhang, Deyong Shao, Xiuyan Liu, Hui Song, Heng Peng
Summary: In this study, an integrated method of measuring optical reflectance and Raman spectroscopy is proposed to accurately determine the thermal maturity of Lower Cambrian shales in South China. The results show that this method is reliable and effective, and it has important implications for analyzing overmature shale.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Mohamed A. K. El-Ghali, Olga Shelukhina, Iftikhar Ahmed Abbasi, Mohamed S. H. Moustafa, Osman Salad Hersi, Numair A. Siddiqui, Khalid Al-Ramadan, Abdullah Alqubalee, Abdulwahab Muhammad Bello, Abduljamiu O. Amao
Summary: This study employs an integrated depositional and sequence stratigraphic approach to assess the control of diagenesis on reservoir porosity of a hybrid-energy delta system. The study focuses on the Barik Formation in the Haushi-Huqf region of Central Oman, which represents a highstand system tract of a hybrid-energy delta. The assessments reveal that the reservoir porosity is controlled by various degrees of diagenetic processes, including mechanically infiltrated clays and kaolinitization of silicate grains.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xiaocan Yu, Chunlian Wang, Hua Huang, Kai Yan
Summary: Oilfield brines are a significant alternative lithium resource. This study investigates the metallogenic characteristics and enrichment process of oilfield brines from the Jianghan Basin, central China using chemical and multi-isotope data. The results suggest that lithium enrichment in these brines is the result of interaction with clastic host rocks and dilution by meteoric water.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Jianghao Qiao, Xiwu Luan, Thanuja D. Raveendrasinghe, Yintao Lu, Guozhang Fan, Xinyuan Wei, Long Jin, Jian Yin, Haozhe Ma, Lushan Jiang
Summary: This study investigates the Tanintharyi passive continental margin in the Andaman Sea and reveals the potential of the Oligocene/Early Miocene carbonate platform in the region as a significant hydrocarbon reservoir. It also examines the influence of changes in sedimentary facies and the tectonic setting of the Andaman Sea on the evolution of pockmarks.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Anastasios Nikitas, Georgios Makrodimitras, Maria V. Triantaphyllou, Nikolaos Pasadakis, Kimon Christanis, Stavros Kalaitzidis, Grigoris Rousakis, Ioannis Panagiotopoulos, Alexandra Gogou, Alexandros Papadopoulos, Efthimios Tartaras, Aristofanis Stefatos
Summary: Due to the lack of deep wells in the broader region, studying mud volcanic deposits can improve the geological understanding of the Mediterranean Ridge. In this study, biostratigraphic and geochemical analyses were performed on mud breccia deposits from five Mud Volcanoes in the central MR. The results indicate the origin of these deposits and provide insights into the source rock potential. Seismic data is also used to determine the distribution of major lithostratigraphic formations.
MARINE AND PETROLEUM GEOLOGY
(2024)