In the long process of geological evolution, different paleoenvironments gave birth to various types of sedimentary systems, which has led to the formation of different types of oil and gas reservoirs. Any rock formation with connected pores in which oil and gas can be stored and percolated on a large scale can be said to be a reservoir. However, unconventional reservoirs usually refer to tight reservoirs with low porosity and permeability, such as clastic rocks (such as tight sandstone, conglomerate, shale, etc.), carbonate rocks and special lithology reservoirs (such as volcanic rocks, metamorphic rocks, caisson tuff, gas hydrate, etc.). Unconventional system can be formed in both marine and continental sequences. Complex base level changes, material accumulation and sedimentary sequence response mechanisms lead to the formation of unconventional oil and gas reservoirs.
The unconventional oil and gas reservoirs that will be covered in this research topic include shale oil and gas, deep-water fine-grained sediments, fracture-type, karst cave-type, fracture-dissolved pore type tight reservoirs, fault-fracture body, volcanic-metamorphic rock basement reservoirs, tuff reservoirs, etc. The formation mechanism and controlling factors of high-quality reservoirs are hot topics in unconventional oil and gas geology and are important supplements to the basic theories of classical oil and gas geology.
The development of unconventional reservoirs has benefited from new hydrocarbon accumulation theories and the rapid development of reservoir space evaluation techniques at different scales (from macro to micron-nano level). New evaluation techniques have enabled accurate and dynamic characterization of unconventional reservoir rocks from loose material to solid rock, porous elastic reservoir, and completion of hydrocarbon aggregation. In this process, the formation mechanism of different unconventional reservoirs is different, and the controlling factors of reservoir quality are also varied. Therefore, the study of the full range of all characteristics in lithology, diagenetic evolution, genetic mechanisms, controlling factors and hydrocarbon accumulation patterns of unconventional oil and gas reservoirs has become a new trend in the efficient exploration and development of oil and gas resources. The systematic publication on these types of research has important theoretical guidance and scientific value for promoting and guiding the construction of improved models and understanding of the whole oil and gas system.
This research topic aims to introduce the latest developments in the formation, evolution mechanism, controlling factors of unconventional reservoirs and their effects on hydrocarbon accumulation. We invite researchers to contribute their new work, which will be extended to explore as many aspects as possible in the evaluation of unconventional reservoirs.
Potential topics include but are not limited to the following:
• High-resolution sedimentary cycles in unconventional system domains
• Characteristics and identification of lithology and lithofacies of unconventional reservoirs
• Formation mechanism of unconventional reservoir sweet spots
• Formation mechanism and controlling factors of reservoir densification
• Controlling factors and development models of deep-water fine sediment
• Sedimentary mode and reservoir control of deep water turbidite flow
• Diagenesis of unconventional reservoirs
• Logging, seismic and geomechanical evaluation techniques for unconventional reservoirs
• Thermal evolution mode of hydrocarbon generation in unconventional reservoirs
• Discontinuous hydrocarbon accumulation patterns in unconventional reservoirs
• Heterogeneity of strike-slip faults controls hydrocarbon accumulation
• Fine quantitative characterization of pores/fractures at different scales
• Formation mechanism of the fault-fracture body or fractured reservoir
• Integration of geology and engineering in fractured reservoir
In the long process of geological evolution, different paleoenvironments gave birth to various types of sedimentary systems, which has led to the formation of different types of oil and gas reservoirs. Any rock formation with connected pores in which oil and gas can be stored and percolated on a large scale can be said to be a reservoir. However, unconventional reservoirs usually refer to tight reservoirs with low porosity and permeability, such as clastic rocks (such as tight sandstone, conglomerate, shale, etc.), carbonate rocks and special lithology reservoirs (such as volcanic rocks, metamorphic rocks, caisson tuff, gas hydrate, etc.). Unconventional system can be formed in both marine and continental sequences. Complex base level changes, material accumulation and sedimentary sequence response mechanisms lead to the formation of unconventional oil and gas reservoirs.
The unconventional oil and gas reservoirs that will be covered in this research topic include shale oil and gas, deep-water fine-grained sediments, fracture-type, karst cave-type, fracture-dissolved pore type tight reservoirs, fault-fracture body, volcanic-metamorphic rock basement reservoirs, tuff reservoirs, etc. The formation mechanism and controlling factors of high-quality reservoirs are hot topics in unconventional oil and gas geology and are important supplements to the basic theories of classical oil and gas geology.
The development of unconventional reservoirs has benefited from new hydrocarbon accumulation theories and the rapid development of reservoir space evaluation techniques at different scales (from macro to micron-nano level). New evaluation techniques have enabled accurate and dynamic characterization of unconventional reservoir rocks from loose material to solid rock, porous elastic reservoir, and completion of hydrocarbon aggregation. In this process, the formation mechanism of different unconventional reservoirs is different, and the controlling factors of reservoir quality are also varied. Therefore, the study of the full range of all characteristics in lithology, diagenetic evolution, genetic mechanisms, controlling factors and hydrocarbon accumulation patterns of unconventional oil and gas reservoirs has become a new trend in the efficient exploration and development of oil and gas resources. The systematic publication on these types of research has important theoretical guidance and scientific value for promoting and guiding the construction of improved models and understanding of the whole oil and gas system.
This research topic aims to introduce the latest developments in the formation, evolution mechanism, controlling factors of unconventional reservoirs and their effects on hydrocarbon accumulation. We invite researchers to contribute their new work, which will be extended to explore as many aspects as possible in the evaluation of unconventional reservoirs.
Potential topics include but are not limited to the following:
• High-resolution sedimentary cycles in unconventional system domains
• Characteristics and identification of lithology and lithofacies of unconventional reservoirs
• Formation mechanism of unconventional reservoir sweet spots
• Formation mechanism and controlling factors of reservoir densification
• Controlling factors and development models of deep-water fine sediment
• Sedimentary mode and reservoir control of deep water turbidite flow
• Diagenesis of unconventional reservoirs
• Logging, seismic and geomechanical evaluation techniques for unconventional reservoirs
• Thermal evolution mode of hydrocarbon generation in unconventional reservoirs
• Discontinuous hydrocarbon accumulation patterns in unconventional reservoirs
• Heterogeneity of strike-slip faults controls hydrocarbon accumulation
• Fine quantitative characterization of pores/fractures at different scales
• Formation mechanism of the fault-fracture body or fractured reservoir
• Integration of geology and engineering in fractured reservoir