Volcanism and Oil–Gas Reservoirs—Geology and Geochemistry

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Geochemistry and Geochronology".

Deadline for manuscript submissions: closed (30 April 2025) | Viewed by 1872

Special Issue Editors


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Guest Editor
College of Geosciences, China University of Petroleum, Beijing 102249, China
Interests: the relationship between mineral deposits and oil reservoirs; geochemistry

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Guest Editor
College of Geosciences, China University of Petroleum, Qingdao 266580, China
Interests: petroleum accumulation mechanism; petroleum geochemistry
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China
Interests: sedimentology; reservoir geology

Special Issue Information

Dear Colleagues,

In recent years, with the continuous deepening of the study of volcanic rocks, it has been found that they possess six characteristics, "generation, storage, cover, trap, migration, and preservation", which may become a "new target area" for the next step of oil and gas exploration. Volcanism plays an important role in the formation of oil and gas reservoirs in volcanic rocks. Its magmatic thermal effect can promote the maturation of organic matter and the migration of oil and gas. The gas–liquid substances (H2, metal elements, etc.) brought by volcanic activity can serve as catalysts to improve the efficiency of hydrocarbon generation and expulsion. The formed volcanic channels can directly provide channels for oil and gas migration, and the pressure difference formed by condensation in the intrusion leads to oil and gas migration into the volcanic rock reservoir. Volcanic rocks have good reservoir properties and are less affected by later compaction, making them suitable as oil and gas reservoirs. Among them, explosive, overflow, and volcanic sedimentary facies can all store oil and gas. Meanwhile, the presence of organic matter can enrich metals, which may lead to the formation of metallic mineral resources near volcanic oil and gas reservoirs. Due to the large buried depth and strong heterogeneity of volcanic rock reservoir, exploration methods suitable for sedimentary rock reservoir cannot be well applied to volcanic rock. Therefore, according to the characteristics of volcanic rock, it is found that geophysical exploration techniques such as three-dimensional seismic exploration and new drilling and completion can be used to accurately locate and effectively develop volcanic rock reservoirs.

Significant progress has been made in the study of volcanic oil and gas reservoirs across the world, but due to its complexity and diversity, it is necessary to further study the above volcanic oil and gas reservoirs and comprehensively analyze the accumulation mechanisms of volcanic oil and gas reservoirs to ensure more efficient and environmentally friendly exploration and development.

Dr. Zhiyong Ni
Prof. Dr. Zhonghong Chen
Dr. Yunfeng Zhang
Guest Editors

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Keywords

  • volcanic rock reservoir
  • volcanic rock facies
  • migration of oil and gas
  • geophysical exploration techniques

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Published Papers (2 papers)

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Research

21 pages, 23597 KiB  
Article
The Effect of Pre–Triassic Unconformity on a Hydrocarbon Reservoir: A Case Study from the Eastern Mahu Area, Northwestern Junggar Basin, China
by Yong Tang, Xiaosong Wei, Detian Yan, Menglin Zheng, Lei Zhang and Zhichao Yu
Minerals 2024, 14(12), 1277; https://doi.org/10.3390/min14121277 - 16 Dec 2024
Cited by 1 | Viewed by 693
Abstract
Unconformities are of significant interest to petroleum geologists because of their crucial roles in influencing reservoir quality and controlling oil and gas migration. This study investigates the impact of unconformities on a reservoir within a prolific oil–gas-bearing zone between the Middle Permian and [...] Read more.
Unconformities are of significant interest to petroleum geologists because of their crucial roles in influencing reservoir quality and controlling oil and gas migration. This study investigates the impact of unconformities on a reservoir within a prolific oil–gas-bearing zone between the Middle Permian and Lower Triassic strata in the northwestern Junggar Basin, utilizing thin sections, well logging data, seismic profiles, and geochemical analyses. The results reveal a well-developed three-layer unconformity structure characterized by a thick weathered clay layer, which acts as an effective caprock for hydrocarbons. The diagenetic evolution of the Lower Wuerhe Formation in the northwestern Junggar Basin consists of an initial stage of compaction followed by a subsequent stage of dissolution and cementation. Four key factors, including low argillaceous content in sandstone and conglomerate, diagenetic compaction, zeolite dissolution and cementation, and clay mineral infill, have played a crucial role in influencing the reservoir characteristics of the Lower Wuerhe Formation. In addition, the development of unconformities promotes atmospheric freshwater leaching, which enhances the dissolution of the underlying reservoir while developing an extensive network of strike-slip faults that improve connectivity within hydrocarbon reservoirs. This process facilitates both vertical and lateral migration of hydrocarbons along hard rock layers, which allows the unconformity to breach into the overlying conglomerate reservoirs. The results of this study suggest that the reservoir in proximity to the unconformity surface often exhibits high porosity and rich hydrocarbon content, offering valuable insights for future oil and gas exploration and development. Full article
(This article belongs to the Special Issue Volcanism and Oil–Gas Reservoirs—Geology and Geochemistry)
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14 pages, 7391 KiB  
Article
The Role of the Emeishan Large Igneous Province in Hydrocarbon Formation in the Anyue Gas Field, Sichuan Basin, China
by Zhiyong Ni, Chuanqing Zhu, Huichun Liu, Chengyu Yang, Ganggang Shao, Wen Zhang and Bing Luo
Minerals 2024, 14(12), 1266; https://doi.org/10.3390/min14121266 (registering DOI) - 12 Dec 2024
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Abstract
This study investigates the impact of the Emeishan Large Igneous Province (ELIP) on hydrocarbon formation within the Anyue gas field in the Sichuan Basin. As a major Middle to Late Permian large igneous province, the ELIP hosted intense mantle plume activity that reshaped [...] Read more.
This study investigates the impact of the Emeishan Large Igneous Province (ELIP) on hydrocarbon formation within the Anyue gas field in the Sichuan Basin. As a major Middle to Late Permian large igneous province, the ELIP hosted intense mantle plume activity that reshaped regional tectonics and thermal structures, indirectly influencing hydrocarbon accumulation. This paper examines three primary factors in hydrocarbon evolution linked to the ELIP: its thermal influence, induced fluid activity, and role in hydrocarbon cracking. Data reveal that the thermal effects of the ELIP extend to the central Sichuan Basin, where an elevated paleogeothermal gradient has driven hydrocarbon evolution in the Anyue gas field. Petrographic characteristics, chronological data, fluid inclusion features, and C–O, S, and Pb isotopic signatures collectively indicate that around 260 Ma, a hydrothermal event occurred in the Sichuan Basin, closely aligned with a natural gas charging event. The combined effects of a heightened geothermal gradient and hydrothermal fluids (with temperatures up to 320 °C) suggest that paleo-oil reservoirs had already cracked into natural gas during the peak ELIP activity. Full article
(This article belongs to the Special Issue Volcanism and Oil–Gas Reservoirs—Geology and Geochemistry)
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