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Influence of faults on late-stage migration of methane-rich gas in a major unconventional hydrocarbon accumulation: Montney Formation, western Canada Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-16 James M. Wood, Tristan Euzen, Jaime Cesar
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Mixed siliciclastic-carbonate-tuffaceous sedimentation in a rift lacustrine basin: A case study of the Lower Cretaceous Jiufotang Formation in the Luxi sag, Songliao basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-16 Yanan Li, Jingqi Xue, Shuai Wang, Zhaorui Ye, Jun Yang
The Lower Cretaceous Jiufotang Formation lacustrine successions in the rift Luxi sag, Songliao Basin are characterized by mixed siliciclastic-carbonate-tuffaceous and organic-rich deposits. Ten facies were recognized and were formed in fan delta, delta, littoral-sublittoral lacustrine and deep lacustrine environments. A depositional sequence characterized by significant changes in facies and lake regime
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Determination of multistage oil charge processes in the Ediacaran Dengying gas reservoirs of the southwestern Sichuan basin, SW China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-16 Tao Luo, Xiaowen Guo, Zhiliang He, Nianhan Yun, Ze Tao, Furong Wang
The Sichuan Basin has experienced multi periods of tectonic uplift event, accompanied with multiple hydrocarbon accumulation and phase transitions processes in the deep and ultra-deep reservoirs. The formation of paleo-oil reservoir plays an important role in the distribution of present-day gas fields, yet many records of early oil reservoirs have been destroyed. A series of methods including, petrography
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Lacustrine shale lithofacies and depositional environment in the paleocene second member of the funing formation, subei basin, China: Insights into shale oil development prospects Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-16 Xiaojie Fan, Yangbo Lu, Zhanhong Liu, Yongchao Lu, Jingyu Zhang, Kong Deng, Tao Zhou, Hao Tai, Long Li
Lacustrine fine-grained sedimentary rocks play a crucial role in the petroleum industry, particularly in the exploration of unconventional oil and gas resources. This study focuses on a petroliferous fine-grained succession deposited prior to the Paleocene–Eocene Thermal Maximum (PETM), specifically, the Paleocene second member of the Funing Formation. This formation represents the primary target for
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Quantitative characterization of thin-interbedded coal measure reservoir configurations in the Wujiu depression, inner Mongolia: Sedimentary controlling mechanisms Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-15 Geng Li, Yong Qin, Hewei Zhang, Xuejuan Song, Boyang Wang, Ziwei Wang, Wentian Mi
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Coupling of source rock gas expulsion intensity and reservoir quality in time and space-a key to determine gas accumulation in Upper Paleozoic tight sandstones of the Mugua gas field, Ordos Basin, China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-12 Ziyi Wang, Shuangfang Lu, Nengwu Zhou, Yancheng Liu, Liming Lin, Yaxin Shang
Research on gas accumulation mechanisms and variations in gas saturation is limited in the newly established Mugua gas field in the Ordos Basin. Understanding these aspects is vital for reduce drilling uncertainty and exploration risk. This study employed a variety of methods, including: (1) the use of organic geochemical examinations to determine the gas expulsion intensity of hydrocarbon source rocks;
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Energy transitioning journey of decommissioning oil and gas wells: A geothermal perspective Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-11 Faakirah Rashid, D.N. Singh
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Dynamic coupling between cementation and porosity evolution of the Chang 8 tight sandstone reservoir, Ordos Basin: Insights from in-situ microanalysis Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-10 Ruiliang Guo, Weiwei Yang, Xiuqin Deng, Shuting Shi, Shutong Li, Junli Qiu, Jiaqiang Zhang, Junlin Chen, Lewei Hao, Xiaofeng Ma, Dongxu Ma, Peng Liu
Understanding cement paragenesis is crucial to the study of the porosity evolution in low-permeability sandstone reservoirs. Carbon and oxygen isotope analysis with micro-drilling sampling, electron probe microanalysis, and laser Raman spectroscopy microanalysis was used to clarify the origin of cements and their relationship with reservoir quality of the Chang 8 tight sandstone reservoir in the Longdong
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Benzocarbazole and methylxanthone molecular migration tracers unravel migration routes and filling history of Veslefrikk, Oseberg-East and Brage reservoirs in the Norwegian North Sea Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-08 Thorsten Uwe Garlichs, Michael Erdmann, Lorenz Schwark
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Hydrothermal alteration mechanisms of an Archaean metamorphic buried hill and the models for reservoir zonation, Bozhong depression, Bohai Bay Basin, China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-06 Changgui Xu, Qingbin Wang, Hongtao Zhu, Xiaojian Liu, Chong Feng, Bin Hu, Huan Li, Yiwei Hao, Xiaoyan Jin, Ye Jia
Multiple metamorphic buried-hill hydrocarbon reservoirs have been recently discovered in the Bozhong Depression, Bohai Bay Basin. Among them, the buried-hill reservoirs in the BZ13, BZ19 and BZ26 regions have the largest condensate gas reserve in eastern China. The hydrocarbon-bearing reservoir has a large thickness with a maximum of ∼1 km, making the oil-equivalent reserve exceed 5 × 10 tons. This
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Exploring ophiolitic deposits offshore Scoglio d’Affrica islet (northern Tyrrhenian Sea): A comprehensive geophysical model of the shallow crustal dynamics Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-05 Luca Cocchi, Filippo Muccini, Daniele Casalbore, Francesco Latino Chiocci, Maria Filomena Loreto, Camilla Palmiotto, Vincenzo Pascucci, Roberta Ivaldi, Gilberto Saccorotti
The islet of Scoglio d’Affrica (Tuscany Archipelago, northern Tyrrhenian Sea) is an emerging segment of the Elba-Pianosa Ridge. This ridge is a major tectonic-structural high formed by Eocene-Early Miocene clastic succession which separates the Tuscany shelf from the Corsica basin. The distinctive structural setting of the Scoglio d’Affrica region is a result of crustal fragmentation during the extensional
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Formation of dolomites from the newly discovered ancient cold seep in the Middle Dongsha area of the South China Sea Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-03 Hong Cao, Zhilei Sun, Xilin Zhang, Xia Zhang, Nengyou Wu, Wei Geng, Zike jiang, Bin Zhai, Yunbao Sun, Xuejun Jiang, Dong Zhang, Aiguo Dong
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Coupling control of organic and inorganic rock components on porosity and pore structure of lacustrine shale with medium maturity: A case study of the Qingshankou Formation in the southern Songliao Basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-03 Dianshi Xiao, Lehua Zheng, Jilin Xing, Min Wang, Rui Wang, Xiaodie Guan, Xueyi Guo
Shale components affect organic–inorganic diagenesis, control the formation and evolution of pore structure, and lead to heterogeneity of shale reservoirs. Therefore, revealing the coupling control of shale components on the porosity and pore structure is crucial for selecting the dominant lithofacies. In this study, the lacustrine shale with medium maturity in the first member of the Qingshankou Formation
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The present-day stress field and paleo tectonics in offshore Brunei Darussalam Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-02 Chunming Xu
Present-day maximum horizontal stress orientation is one of the fundamental inputs for well design and stability analysis. Since the previous stress orientation map in Brunei Darussalam published in 2005, more borehole image data have been acquired to evaluate both reservoir geology and hole damages of different causes. The image-based breakout orientations in recent wells not only filled critical
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Nonmatrix pores form high-permeability zones in carbonate layers: The Furna Feia cave in the Potiguar Basin, Brazil Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-02 Tarsila B. Dantas, Vincenzo La Bruna, Renata E.B. Araujo, Francisco H.R. Bezerra, Delano M. Ibanez, Francisco P. Lima-Filho
Studying nonmatrix porosity in reservoirs is challenging, especially between core samples and seismic scales. To fill this gap, this work studied a karst system as an analog for a nonmatrix carbonate reservoir. We used a multidisciplinary approach, analyzing host rock data (petrography, petrophysics, and tectonic history) and porosity geometry (terrestrial laser scanner, ground penetrating radar, and
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Silurian to early Devonian overmature hot shales in Eastern Taurus: Source rock characteristics and links to North African petroleum systems Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-02 Turhan Ayyildiz, Eren Aykan Acar
The study area is located in the Eastern Taurus region and is characterized by the Paleozoic autochthonous Geyik Dağı Unit (GDU) in the northern Paleo-Tethys back-arc basin. The Eastern Taurus encompasses Silurian-Early Devonian units, which may have the characteristics to be called hot shales. In the study area, the Silurian black and organic lean shales and Orthoceras-bearing limestone and shale
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Diagenetic evolution and origin of cements of the Cretaceous carbonates in the Akal Block, southeast Gulf of Mexico Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-02 Juan Manuel León-Francisco, Karem Azmy, José Manuel Grajales-Nishimura
The Cretaceous succession of deep marine facies (580 m-thick) of the Akal Block, southeast of the Gulf of Mexico, is dominated by lime mudstones that have been extensively affected by dolomitization. Petrographic examination, including cathodoluminescence (CL), and microthermometry reveal three phases of dolomitization that occurred as replacement and pore-/fracture-filling cements. These are (1) an
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Impact and implications of hydrothermal fluids migration in the Frolov hydrocarbon province in West Siberia Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-04-02 Dina Gafurova, Anna Maltseva, Anton Kalmykov, Adriano Mazzini, Natalia Balushkina, Evgenia Karpova, Alexey Khotylev, Margarita Latypova, Maria Fomina, Ekaterina Manuilova, Julia Kotochkova, Daria Ivanova, Valeriia Churkina, Georgy Kalmykov
Both the prolific source rocks of the Bazhenov Formation and the reservoir-prone units of the Abalak Formation cover most of the West Siberian region. Hydrothermal fluids circulation has been suggested to affect hydrocarbon potential and reservoir properties at some localities of this vast hydrocarbon province. However, integrated studies are currently lacking. Here we present an extensive multidisciplinary
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Fluid inclusion records of oil-cracked wet gas in Permian carbonate reservoirs from the Eastern Sichuan Basin, China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-29 Dongquan Sun, Xiaolin Wang, Feiyang Li, Wenxuan Hu, Jian Cao, Donghua You, Binbin Xi
Oil-cracked gas is an important gas resource in petroliferous basins. In theory, oil-cracked gas should be rich in C (i.e., wet gas). However, gas reservoirs of oil cracking origin in the Sichuan Basin (South China) are mainly composed of dry gas. Fluid inclusions record hydrocarbon generation and evolution. Obviously, identifying wet gas inclusions is the key to solving the above controversy. Here
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Implications of the depositional and diagenetic attributes on the reservoir properties of the siliciclastic mangahewa formation, Taranaki Basin, New Zealand: Integrated petrographical and petrophysical studies Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-29 Ahmed A. Kassem, Bassem S. Nabawy, Saad Mogren, Mohamed I. Abdel-Fattah, Ahmed A. Radwan, Elkhedr Ibrahim
The siliciclastic Mangahewa reservoir in the Pohokura Gas Field presents a formidable challenge for gas exploration due to its diverse petrophysical properties. To address this challenge, our study employs a comprehensive approach integrating petrography and petrophysical analyses for core and well logging data. In the present study, we uncover an association of sandstone microfacies, in the key wells
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Impact of disequilibrium compaction and unloading on overpressure in the southern Junggar Foreland Basin, NW China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-29 Wei Zhang, Chaodong Wu, Shaobo Liu, Xiaozhou Liu, Xiaozhi Wu, Xuesong Lu
Disequilibrium compaction caused by burial or tectonic compression and unloading are the common overpressure mechanisms in foreland basins. However, accurately identifying multiple overpressure origins in such basins is challenging, since it requires distinguishing impact of vertical and horizontal stresses on compaction and overpressure as well as identifying overpressure caused by unloading. This
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Evaluation of shale oil and gas plays - Part I: Shale reservoir property modelling of the North Sea Kimmeridge Clay Formation Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-27 Akinniyi A. Akinwumiju, Dorothy Satterfield, Jordan J.J. Phethean
The Kimmeridge Clay Formation (KCF) forms the source rock for most conventional hydrocarbon accumulations within the UK North Sea. However, only a few previous studies have analyzed the potential of the KCF for unconventional resources (i.e., shale oil and gas).
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3D modeling of the stratigraphic and structural architecture of the Crotone basin (southern Italy) using machine learning with Python Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-27 Ettore Falsetta, Manuel Bullejos, Salvatore Critelli, Manuel Martín-Martín
The 3D modeling and representation of geological data have experienced significant growth within last years, due to the use of new technologies derived from advancements in land representation methods. These technologies enable interactive, intuitive and clear geological visualizations. This paper shows how, by using the open-source Python software (operable with a simple internet browser) for machine
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Influence of sedimentary architecture on static connectivity and geothermal doublet performance (Mezőberény, SE Hungary) Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-27 Soma Budai, Cees J.L. Willems, Luca Colombera, Rob Westaway
Although the Pannonian Basin in Hungary boasts significant geothermal potential, most geothermal wells in the region suffer from reinjection issues. The aim of this study is to examine the impact of the sedimentary architecture of a paralic lacustrine succession on the static connectivity of a geothermal aquifer. This problem was examined for a case-study geothermal doublet drilled in Mezőberény, southeast
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Distribution of Permian and Triassic strata in the Laoshan Uplift, Southern Yellow Sea, using seismic attributes Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-27 Niantian Lin, Kai Zhang, Jianwen Chen, Jiuqiang Yang, Lingyun Jia
The Laoshan Uplift (LSU) in the South Yellow Sea Basin of the Lower Yangtze Plate is a potential site for hydrocarbon exploration; thus, determining the strata attributes and distribution is imperative. Tracking a wide range of seismic reflection horizons for lateral comparisons is challenging because the first well (CSDP-2) encountered in the Paleozoic strata of the LSU is located in a structurally
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Age of folding in NW Lurestan arc across the Khanaqin fault by magnetostratigraphy on Aghajari growth strata, Zagros folded belt Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-26 Ahmad Lashgari, Mahdi Najafi, Elisabet Beamud, Estefanía Maestre, Jaume Vergés
The timing of deformation and the age of sediments in foreland basins are key information for reconstructing the tectonic history of orogenic belts. This study, utilized magnetostratigraphic techniques to determine the ages of ∼ 2.5 km-thick strata within the Zagros folded foreland basin in the flank of the NW-SE-trending Emam Hassan anticline, located above the N–S-trending Khanaqin blind basement
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Diagenesis and pressure evolution in Ediacaran carbonate rocks in the North Slope (Penglai area) of the central Sichuan Basin (SW China) Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-26 Xiuyan Liu, Junjia Fan, Hua Jiang, Jacques Pironon, Xuesong Lu, Mehdi Ostadhassan
The Penglai area is an emerging giant gas field in the Sichuan Basin supporting the carbon neutrality goal. To accelerate the exploration, this study combines petrographic observations using optical and cold cathodoluminescence microscopy, fluid inclusion microthermometry, Raman spectroscopy, 1D basin modeling and fluid inclusion PVTX modeling techniques to reveal the paleo-fluid P-T evolution in the
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Unveiling the transtensional geodynamics of Cenozoic depocenter changes in the Andaman sea: Seismic evidence for the existence of the East Sagaing Fault and the Andaman Basin Central Fault Zone in the Tanintharyi region Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-26 Thanuja D. Raveendrasinghe, Xiwu Luan, Jianghao Qiao, Long Jin, Zijie Wang, Aravinda Vikum, Yang Xue, Haozhe Ma, Renchao Yang, Guozhang Fan, Yintao Lu
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Changes in the stratigraphic architecture as the response to the Upper Cretaceous tectonic and climatic interplay in the Sanfranciscana Basin, Brazil Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-25 Alessandro Batezelli, Leidy Alexandra Delgado Blanco, Taynah Buratto Rebelo
During the Cretaceous, the Brazilian Intracratonic Sanfranciscana Basin was characterised by fluvial and aeolian deposition, whose facies, palaeosols, and stratigraphic architecture indicate significant changes in tectonics and climate. This work proposes a low-frequency sequence stratigraphic model, using the facies and palaeosols distribution as the stratigraphic proxy for identifying variations
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New insights into Cenozoic evolution of the Shijiutuo uplift, Bohai Bay basin, China: Constraints from apatite fission track analysis and seismic data Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-23 Nan Jia, Chiyang Liu, Jianqiang Wang, Xiaofei Fu, Lei Huang, Haifeng Yang, Haixue Wang, Jinghui Ma, Di Li
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Lacustrine deposition in response to the middle eocene climate evolution and tectonic activities, Bohai Bay Basin, China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-23 Qing Li, Xuelian You, Zaixing Jiang, Shenghe Wu, Dali Yue, Jiangshan Li, Yuan Zhou
The lower unit of the third member of the Eocene Shahejie Formation (Es, 42.5 to ∼40Ma) is one of the most important petroleum exploration targets in the Bohai Bay Basin. Lacustrine deposits are widely distributed in the Esunit of the Shulu Sag and display strong vertical and horizontal variations in lithofacies and geochemical characteristics. Based on core data, thin-section petrography, stable δC
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Resistance of eogenetic dolomites to geochemical resetting during diagenetic alteration: A case study of the lower Qiulitage Formation of the Late Cambrian, Tarim Basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-22 Yan Zhang, Guangyou Zhu, Xi Li, Yifei Ai, Pengzhen Duan, Jincheng Liu
Rare earth elements (REEs), carbon, oxygen and Mg isotopes have been widely used to explain the origin of dolomite, but dolomite may undergo complex diagenetic alteration during long geological processes, and whether the geochemical signals of precursor dolomite can be preserved is still unknown. In order to further explore the formation mechanism of dolomite and the influence of diagenetic alteration
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Fracture aperture: A review on fundamental concepts, estimation methods, applications, and research gaps Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-22 Zahra Pouraskarparast, Hamed Aghaei, Luca Colombera, Enrico Masoero, Mojtaba Ghaedi
Among all rock-fracture parameters, fracture aperture plays an especially crucial role in a range of engineering applications, such as controlling reservoir behavior during production and storage, drilling management, and groundwater recharge and exploitation. However, major challenges persist in the accurate measurement, inference and modelling of fracture aperture. In this work, we offer an overview
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Behaviors of trace elements under varying methane seepage intensity: Insight from tubular seep carbonates in the South China Sea Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-22 Ziheng Chen, Zice Jia, Shanggui Gong, Jiangtao Li, Gilad Antler, Dong Feng
Seep carbonates are commonly used to study environmental conditions based on trace element patterns. However, the relationship between methane flux and trace element enrichments is not well understood. Tubular seep carbonates, which are interpreted as former fluid conduits, offer an opportunity to investigate how trace element distributions in these structures respond to changes in methane flux. Here
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Interaction between magmatism and polygonal faults revealed by three-dimensional seismic data in the Zhongjiannan Basin, South China Sea Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-21 Wenlong Wang, Xiujuan Wang, Yintao Lu, Sanzhong Li, Jiapeng Jin, Yanhui Suo, Yiqun Guo, Guangxu Zhang, Zhengyi Zhang, Jilin Zhou
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Classification and reservoir characteristics of lacustrine carbonate conglomerate in the Shulu Sag of the Bohai Bay Basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-20 Lijing Zheng, Cunwu Wang, Zaixing Jiang, Yasheng Wu, Xiangxin Kong, Xueshen Zhu, Yue Zhang
Carbonate conglomerate in the lower part of the third member of the Eocene Shahejie Formation comprises one of the most important petroleum exploration targets in the Bohai Bay Basin. Based on core observations and thin-section identifications, the carbonate conglomerate is divided into five types in the central area of the Shulu Sag. Reservoir space types are studied by observation through casting
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A novel method to determine the optimal threshold of SEM images Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-19 Ziyun Zhang, Chuanzhi Cui, Zhongwei Wu
The determination of threshold is crucial for the binarization of scanning electron microscopy (SEM) images. In this paper, a new method for determining the optimal threshold considering the three-dimensional characteristics of shale samples is proposed based on GIS. Firstly, the SEM images of seven shale samples at six magnifications are 3D reconstructed and visualized using ArcMap and ArcScene. Relevant
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Marine anoxia events across the upper Cambrian (stage 10) of eastern Gondwana: Implications from paleoenvironmental geochemical proxies Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-18 Guoqiang Luan, Chengyan Lin, Karem Azmy, Liyun Fu, Chunmei Dong, Haocheng Liu, Zhaoqun Zhu, Fajie Cai
The uppermost Cambrian succession (Stage 10) of the Wa'ergang section (∼300 m of rhythmites, South China) records three globally correlated negative δC excursions (N1, N2, and the HERB- Helenmaria – Red Tops Boundary), overlying the SPICE event (Steptoean Positive Carbon Isotope Excursion), indicating perturbations in the global carbon cycle. The trigger and process of these events still remain elusive
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Organic matter accumulation as a convergence response to astronomical forcing: Insights from Milankovitch periods and sea-level fluctuations during the early Cambrian Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-18 Qiannan Xu, Yanming Zhu, Shangbin Chen, Yu Liu, Simon C. George
The accumulation of organic matter (OM) in marine sediments is a vital part of the global carbon cycle today and on ancient Earth, and is driven by a cumulative shift of organic carbon flux through oceans to marine sediments. This shift is a complicated process that is known to be influenced by the biological pump, diagenesis, and thermal alteration, so is affected by oceanic conditions and palaeo-climate
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Petroleum accumulations in the tarim basin during various tectonic stages as revealed by U–Pb dating of multi-phase calcite veins in deeply buried carbonate reservoirs Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-17 Hao Xu, Zicheng Cao, Lili Gui, Kamaldeen O. Omosanya, Feng Geng, Ze Tao, Xiaowen Guo
Significant discoveries in deeply buried marine carbonate petroleum exploration have been made recently in the Tarim Basin, NW China. Constraining the evolutionary history of fluid activity and the process of oil charging in the deeply buried carbonate reservoirs is crucial for further hydrocarbon exploration and development. In this study, we conducted an integrated study combining petrography, geochemistry
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Origin of a high-velocity layer: Insights from seismic reflection imaging (South China Sea) Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-17 Qing He, Zongdong Pan, Shaoping Lu, Hongfang Gao, Han Chen, Rui Gao
Magmatism and crustal structural characteristics are well-known phenomena that support understanding the marginal sea's tectonic evolution. The South China Sea (SCS) has become a natural laboratory for researchers to investigate the evolution of the marginal sea because of its complex tectonic background and multiple phases of magmatic activities. However, due to limitations in resolution and depth
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Gas hydrate in the North Carnarvon Basin, offshore Western Australia Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-16 Fawz Naim, Ann E. Cook
Analysis of hydrate systems across basins is not common, as most studies are focused on smaller sites. Using petroleum industry well and seismic data, we identify natural gas hydrate accumulations across the entire North Carnarvon Basin, offshore Western Australia. Out of 120 wells, 52 wells have evidence for gas hydrate, though hydrate is distributed throughout the hydrate stability zone in low concentrations
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Vertical heterogeneity of Gulong shale oil governed by the OM precursors and oil accumulation: Implications for shale oil exploration in the Songliao Basin, Northeastern China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-16 Xiaomei Wang, Kun He, Shuichang Zhang, Zihui Feng, Siwei Meng, Chunlong Yang, Minghao Wu
Shale oil has been discovered and produced in the Cretaceous Qingshankou Formation (Kqn) of the Gulong sag in the Songliao Basin (the Gulong shale oil). However, the selection of favorable layers for shale oil development remains uncertain due to significant variations in oil production of different intervals in the Formation (Q–Q). In this study, the geochemical features of shale, the content and
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Mapping palaeoshorelines of river-dominated deltas in lacustrine ramp settings: Application of sedimentological analyses to the Triassic Yanchang Formation (Ordos Basin, China) Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-16 Jungang Pang, Luca Colombera, Nigel P. Mountney, Ji'an Guo, Kewen Yang, Wenhou Li
In the preserved successions of clastic lacustrine systems receiving substantial sediment input from fluvial sources, the boundary between delta-plain and delta-front facies belts marks the position of ancient lacustrine shorelines. Placing and predicting the position of this boundary in nearshore lacustrine deposits of the Triassic Yanchang Formation (Ordos Basin, China) is of considerable applied
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Field-scale numerical investigation of a hybrid gas production method from the oceanic hydrate accumulation at site NGHP-02-09 in the Krishna-Godavari Basin, and the associated geomechanical responses Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-16 Jiecheng Zhang, George J. Moridis, Thomas A. Blasingame
The objectives of this study are to investigate (a) the technical feasibility of gas production from a gas hydrate accumulation at Site NGHP-02-09 in the Krishna-Godavari Basin, India Ocean using a hybrid production method involving a combination of depressurization and thermal stimulation, as well as (b) the associated geomechanical system response when considering both a simplified and a full geomechanical
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Evolution of provenance and sedimentary records in multiphase rift basins: Insights from petrology, detrital zircon geochronology, and seismic reflections of Oligocene Liaozhong Depression, Bohai Bay Basin, China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-16 Yi Qin, Xiaomin Zhu, Shifa Zhu, Chengqian Tan, Shaohua Zhang, Jianmin Zhu, Hao Yan, Fang Zhao
Sedimentary provenance in multiphase rift basins exhibits rapid variations during distinct tectonic sub-stages, and a close association exists between alterations in sediment source, geomorphology, and tectono-depositional records. This study comprehensively integrates sandstone petrology, heavy mineral assemblages, detrital zircon characters, drill cores, well logs, and seismic reflections to investigate
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The thermal history of Permian carbonate strata reconstructed with clumped isotopes and U–Pb dating: Eastern Sichuan Basin, SW China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-16 Xin Liu, Nansheng Qiu, Qianqian Feng
The lack of effective paleogeothermometers restricts the study of the thermal history of carbonate strata. Carbonate clumped isotope thermometry and in-situ U–Pb dating are appropriate for reconstructing the thermal history of carbonate strata. Herein, this study analyzed clumped isotope compositions and U–Pb ages of calcite fabrics, including micrite matrix and veins, from Permian carbonate strata
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Hydrogeophysical characterization of the Bir Guendouz basin (SW Morocco): Insights into its relations to the Senegal-Mauritanian basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-15 Youssef Arjdal, Abdelaziz Mridekh, Malika Kili, Siham Acharki, Sidi Mokhtar El Kanti, Soufiane Taia, Hassan Echerfaoui, Bouabid El Mansouri
The Senegal-Mauritanian Basin onshore is the largest among the northwest African Atlantic margin basins, covering approximately 350,000 km and extending from Morocco to Guinea Bissau. Although valuable information is provided on the Senegalese part, data on other parts of the basin are scarce. The study aims to visualise the subsurface structure and describe the distribution patterns of Meso-Cenozoic
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Tectonostratigraphy of the Upper Jurassic-Lower Cretaceous siliciclastic (Shurijeh Formation) in the eastern Kopeh Dagh fold and thrust belt, Iran Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-14 Abdullah Aghababaei, Behnam Rahimi, Farzin Ghaemi, Reza Moussavi-Harami, Hossein Motamedi, Parisa Gholami Zadeh
During the Late Jurassic-Early Cretaceous, a significant gas-bearing siliciclastic succession was deposited in the Kopeh Dagh fold-thrust belt in northeastern Iran. Study of the regional evolution of depositional system and geodynamic setting of the red beds continental strata can help in a better understanding of the development of an intracontinental extension in this part of the Eurasia Plate. However
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Fluid tracing and evolution at micron-scale of shales in faulted lake basin: Evidence and constraints from in-situ analysis of analcime Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-14 Junran Wang, Chao Liang, Yingchang Cao, Shunyao Song, Keyu Liu, Shengyu Yang, Jinqiang Tian, Danish Khan, Bixiao Xin
The Huanghua Depression in the Bohai Bay Basin has experienced significant development of massive NNE-NE faults, influenced by the Eocene activation of the Lanliao Fault and its subsequent Oligocene dextral intensification. These faults serve as a conduit for connate fluid and magmatic hydrothermal fluid (MHF), thereby forming a complex fluid system. Gaining an understanding of these fluid activities
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Water distribution in pore systems and its influences on gas-bearing property of deep shale: A case study of the Longmaxi Formation in the Luzhou area, southern Sichuan Basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-13 Yue Feng, Xianming Xiao, Ping Gao, Dongfeng Hu, Ruobing Liu, Gang Li, Chengang Lu, Qin Zhou
The deeply-buried (>3500 m) Longmaxi Formation (LMX) shale in the southern Sichuan Basin, China, has become an attractive target for shale gas exploration owing to its huge resource potential. Exploration shows that the deep shale has a wide range of gas-in-place (GIP) contents, with variable gas yields, but the reason remains unclear, especially the impact of pore water on gas-bearing property lacks
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Review of bacterial sulfate reduction in lacustrine deposition and its identification in the Jimsar Sag, Junggar Basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-13 Xiujian Ding, Liangrong Qian, Wenlong Jiang, Hailei Liu, Ablimit Yiming, Ming Zha, Jiangxiu Qu, Zhongfa Jiang
Bacterial sulfate reduction (BSR) is the interaction between sulfates and organic matter that bacteria participate in during the early diagenetic stage. It is one of the important biogeochemical processes that affect the formation of sulfides and sulfur cycling. Due to the lack of sulfate in the lakes, there is relatively little research on lacustrine bacterial sulfate reduction (LBSR), and related
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Depositional facies controls on reservoir rock typing and heterogeneity: Devonian siliciclastic succession, south central Ghadames basin, Libya Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-13 Mahmoud Leila, Essam El-Khoriby, Mohammed Awad Ahmed, Omar Saied, Hanaa El Adl
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Diagenesis and lateral sealing types of fault zones in the Lishu Depression, Songliao Basin, NE China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-12 Shengmin Su, Youlu Jiang, Gang Guo
The Lishu Depression in the Songliao Basin is characterized by well-developed faults, and the accumulation of oil and gas is closely related to fault sealing. However, there remains a dearth of comprehensive investigation into the diagenesis of fault zones and their influence on lateral sealing. This study employed electron probe analysis, cathodoluminescence, and carbon and oxygen isotope techniques
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Evaluation of sweet spots for a tight sandstone reservoir: A quantitative study of diagenesis in the fourth member of the Oligocene Huagang Formation, Xihu Depression, East China Sea Shelf Basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-12 Wenguang Wang, Chengyan Lin, Xianguo Zhang
Reservoir sweet spot evaluation is very important for tight sandstone gas exploration and development. Due to the characteristics of large burial depth, strong diagenesis heterogeneity, and prominent importance of diagenetic facies, sweet spot evaluation is the focus and difficulty of unconventional oil and gas exploration and development. By combining with core observation, conventional core analysis
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Seismic interpretation of the Mero Field igneous rocks and its implications for pre- and post-salt CO2 generation – Santos Basin, offshore Brazil Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-12 Leonardo Costa de Oliveira, Rodrigo Macedo Penna, Cristiano Camelo Rancan, Isabela de Oliveira Carmo, Gabriel Medeiros Marins
Understanding igneous rock emplacement is crucial for deciphering any sedimentary basin's evolution. Its occurrence can be a determining factor for elements of the petroleum system, such as hydrocarbon generation, migration, trap formation, and reservoir quality. The high-impedance nature of igneous rocks in relation to their surrounding host rocks renders amplitude anomaly-based attributes sufficient
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Geochemical characteristics of Ordovician crude oils in the FI17 strike-slip fault zone of the Fuman oilfield, Tarim basin: Implications for ultra-deep hydrocarbon accumulation in the Tarim basin Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-11 Zhongdeng Lu, Hongwei Ping, Honghan Chen, Yanqiu Zhang, Zhou Xie, Yintao Zhang, Zulin Chen, Xin Yang, Xinle Zhang, Kang Yang, Xiaoqiang Li
The Ordovician crude oils in the Fuman Oilfield usually show varying physical properties and phase states along a single strike-slip fault. This study collected nineteen crude oil and gas condensate samples from the fault zones (F17, F19, and F20) located in the eastern zone of the Fuman oilfield. Organic geochemistry methods were used to investigate the oil-source correlation, thermal maturity and
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Multistage dolomitization influenced by the Emeishan large igneous province: Petrographical and geochemical evidence Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-10 Yang Li, Xiyan Yang, Xinzhi Wang, Cunhui Fan, Xiangyu Fan, Yu Zhang, Rong Yang, Yue Li, Zisang Huang, Fei Huo
The formation of large igneous provinces (LIPs) seems to require a series of conditions conducive to massive dolomitization; however, the specific mechanisms remain unclear. Based on petrographic, geochemical and fluid-inclusion microthermometry analyses, this study identifies the types of dolomites in the Maokou Formation (Middle Permian) in the eastern Sichuan Basin. It analyses the related dolomitization
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Nitrogen isotopes of released gas from rock crushing and implications to origins of molecular nitrogen in Lower Cambrian overmature shale gas in South China Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-09 Kang Meng, Tongwei Zhang, Deyong Shao, Zhongping Li, Liwu Li, Yu Zhang, Yan Liu, Hui Song
The origin and formation mechanism of N-rich Lower Cambrian shale gas remain ambiguous, posing serious exploration risks in the Lower Cambrian shale gas in South China. In this study, high-vacuum-pulsed electromagnetic and helium-filled ball-mill rock-crushing methods were developed to measure the released gas contents, compositions and nitrogen isotopes of N in shale-crushed gas from Lower Cambrian
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Variability of frontally emergent and confined mass-transport complexes in the Qiongdongnan basin, northern South China sea: New perspectives from 2D and 3D seismic data Mar. Petrol. Geol. (IF 4.2) Pub Date : 2024-03-08 Yufeng Li, Renhai Pu, Rangzhi Xian
The frontal emplacement of the submarine and sublacustrine mass-transport complexes (MTCs) are subdivided into the frontally emergent and confined types. However, it remains unclear what factors control the variability of the frontal emplacement of submarine MTCs. High-resolution 2D and 3D seismic data are utilized to investigate the variability of four MTCs_1–4. The results show that (1) Four MTCs_1–4