4.6 Article

Densification mechanism of deep low-permeability sandstone reservoir in deltaic depositional setting and its implications for resource development: A case study of the Paleogene reservoirs in Gaoshangpu area of Nanpu sag, China

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Energy & Fuels

Numerical simulation of the stress field and fault sealing of complex fault combinations in Changning area, Southern Sichuan Basin, China

Jiajie Li et al.

Summary: This study quantitatively analyzes the impact of faults on shale gas productivity in the Changning area of the southern Sichuan Basin, finding that NE-trending faults and faults with fault drop grade of 1 have the greatest damage to shale preservation. The combination of wide and gentle syncline and small fault, low-angle anticline, and large fault is a typical structural style in this area. Well N216 has better fault plugging performance than well N217.

ENERGY SCIENCE & ENGINEERING (2022)

Article Geosciences, Multidisciplinary

Deformation Differences in Complex Structural Areas in the Southern Sichuan Basin and Its Influence on Shale Gas Preservation: A Case Study of Changning and Luzhou Areas

Shun He et al.

Summary: Preservation conditions are crucial for the effective accumulation of shale gas, and the damage caused by faults and lateral shielding are the main reasons for the variation in preservation conditions. Using seismic profiles, this study identifies different shale gas-rich structures in the Wufeng-Longmaxi Formation in southern Sichuan and explores the controlling factors and their impact on preservation. The results show that positive, negative, and fault transformed slope structures are developed in the area. Wide and gentle anticlines and hidden anticlines are particularly favorable for shale gas accumulation.

FRONTIERS IN EARTH SCIENCE (2022)

Article Geosciences, Multidisciplinary

Development Characteristics and Finite Element Simulation of Fractures in Tight Oil Sandstone Reservoirs of Yanchang Formation in Western Ordos Basin

Shilin Wang et al.

Summary: This study systematically investigates the development characteristics of fractures in the tight sandstone reservoirs in low-amplitude structural areas of the Upper Triassic Yanchang Formation in the western Ordos Basin. The study uses a variety of methods to study the development characteristics, prediction methods, and distribution of fractures. The research results show that fractures play an important control role in the accumulation of hydrocarbons in the Yanchang Formation.

FRONTIERS IN EARTH SCIENCE (2022)

Article Geosciences, Multidisciplinary

Geological Characteristics of Deep Shale Gas in the Silurian Longmaxi Formation in the Southern Sichuan Basin, China

Shun He et al.

Summary: This study investigates the geological characteristics and exploration potential of shale gas in the southern Sichuan Basin. The research focuses on the coupling relationship between hydrocarbon generation and storage conditions of the Longmaxi Formation, as well as the preservation conditions from the lateral and vertical migration mechanisms of shale gas. The results show that the organic-rich shale at the bottom was formed in a strongly euxinic and anoxic reducing environment. The organic matter type in the shale is dominantly type I kerogen and a small amount of type II1 kerogen. The enrichment of siliceous organisms increases the organic matter and enhances the brittleness of shale, resulting in superior hydrocarbons and a favorable reservoir. The high vertical formation pressure guarantees the sealing of shale and restrains the lateral and vertical escape of shale gas. The analysis of three-dimensional preservation conditions suggests that areas with a short tectonic uplift time, small amplitudes, large-scale underdeveloped fractures, and a high formation pressure coefficient are favorable for shale gas exploration.

FRONTIERS IN EARTH SCIENCE (2022)

Article Geochemistry & Geophysics

Complicated Fault Characterization and Its Influence on Shale Gas Preservation in the Southern Margin of the Sichuan Basin, China

Cunhui Fan et al.

Summary: The southern margin of the Sichuan Basin is characterized by strong structural deformation, complex fault structure styles and scales, and multistaged geological evolution stages, which together have created various shale gas preservation conditions.

LITHOSPHERE (2022)

Article Geochemistry & Geophysics

Geological Characteristics and Controlling Factors of Deep Shale Gas Enrichment of the Wufeng-Longmaxi Formation in the Southern Sichuan Basin, China

Jing Li et al.

Summary: This study comprehensively analysed the sedimentary environment and exploration potential of the Lower Paleozoic marine shale in the Sichuan Basin. The study examined factors such as sedimentary environment changes, favourable conditions for hydrocarbon generation and preservation, and the impact of tectonic processes on shale gas accumulation.

LITHOSPHERE (2022)

Review Energy & Fuels

Research progress on evaluation methods and factors influencing shale brittleness: A review

Hu Li

Summary: This paper comprehensively analyzes and discusses the evaluation methods and factors influencing shale brittleness. The methods for evaluating shale brittleness mainly include the rock stress-strain relationship, brittle minerals, and comprehensive evaluation methods. The factors influencing shale brittleness include internal geological and external environmental factors.

ENERGY REPORTS (2022)

Article Geosciences, Multidisciplinary

Pore structure and fractal characteristics of the marine shale of the longmaxi formation in the changning area, Southern Sichuan Basin, China

Hu Li et al.

Summary: This study quantitatively characterizes the pore structure of shale in the Longmaxi Formation in the Changning area of the Southern Sichuan Basin. The research reveals that the pores in the shale mainly consist of organic pores, intergranular pores, dissolution pores, and microfractures. The pore structure exhibits self-similarity and conforms to the fractal law, with double fractal characteristics. The mineral components and organic matter have a significant influence on the fractal dimension of the shale. The results provide guidance for the characterization of the pore structure in tight rocks.

FRONTIERS IN EARTH SCIENCE (2022)

Article Energy & Fuels

Chlorite authigenesis and its impact on reservoir quality in tight sandstone reservoirs of the Triassic Yanchang formation, southwestern Ordos basin, China

Ke Li et al.

Summary: Authigenic chlorite in tight sandstone reservoirs of the Triassic Yanchang Formation in the Southwestern Ordos Basin, China, is found in two morphotypes: pore-lining and pore-filling chlorite. Pore-lining chlorite from volcanic material alteration has a positive effect on reservoir quality, while pore-filling chlorite precipitated in pore spaces with higher Mg2+ and Fe2+ concentrations and affected by early calcite cementation significantly reduces porosity and permeability at lower temperatures. Systematic studies on authigenic chlorite provide important insights into reservoir heterogeneity and are applicable to tight oil exploration and development.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2021)

Article Thermodynamics

Sustainable electricity generation from an Enhanced Geothermal System considering reservoir heterogeneity and water losses with a discrete fractures model

Joel M. Zinsalo et al.

Summary: The study explored the impact of reservoir heterogeneity, water losses, well spacing, well orientation, regional flow direction, and injection temperature on system performance in EGS. Neglecting water losses and assuming a homogeneous reservoir were found to overestimate the system performance.

APPLIED THERMAL ENGINEERING (2021)

Article Energy & Fuels

Influence of Mineral Compositions on Shale Pore Development of Longmaxi Formation in the Dingshan Area, Southeastern Sichuan Basin, China

Shun He et al.

Summary: Shales in the Dingshan area have complex mineral compositions, mainly quartz and clay minerals, with varying contents. Organic matter mainly controls the development of micromesopores, while quartz and feldspar mainly control the development of macropores, clay minerals provide interlaminar pores, and pyrite plays a role in promoting shale pores within a certain content range, but inhibiting micropore development when exceeding this range.

ENERGY & FUELS (2021)

Article Energy & Fuels

Characteristics of Natural Fractures in an Ultradeep Marine Carbonate Gas Reservoir and Their Impact on the Reservoir: A Case Study of the Maokou Formation of the JLS Structure in the Sichuan Basin, China

Hu Li et al.

Summary: The primary gas layer in the Maokou Formation of the JLS structure in the Sichuan Basin is a typical pore-fracture carbonate gas reservoir, where natural fractures play a crucial role in improving reservoir physical properties. The fractures are predominantly tectonic in origin and have positive effects on the gas reservoirs' physical properties.

ENERGY & FUELS (2021)

Article Geosciences, Multidisciplinary

Effectiveness evaluation of natural fractures in Xujiahe Formation of Yuanba area, Sichuan basin, China

Hu Li et al.

ARABIAN JOURNAL OF GEOSCIENCES (2019)

Review Engineering, Multidisciplinary

Theoretical Progress and Key Technologies of Onshore Ultra-Deep Oil/Gas Exploration

Xusheng Guo et al.

ENGINEERING (2019)

Article Energy & Fuels

Tight gas sandstone reservoirs in China: characteristics and recognition criteria

Caineng Zou et al.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2012)

Article Geochemistry & Geophysics

A novel model for assessing the pore structure of tight sands and its application

Li Chao-Liu et al.

APPLIED GEOPHYSICS (2010)