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Characterization of pore structure in Carboniferous–Permian gas shales and tight sandstones of the coal-bearing succession in the Qinshui Basin, north China
Both shales and tight sandstones have complex and heterogeneous pore systems that largely determine reservoir quality. However, there are few...
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Depositional process and its control on the densification of coal-measure tight sandstones: insights from the Permian Shanxi Formation of the northeastern Ordos Basin, China
The densification of coal-measure sandstones is important to the exploration of tight sand gas. Previous studies have focused on the influence of...
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A Permeability Prediction Model of Single-Peak NMR T2 Distribution in Tight Sandstones: A Case Study on the Huangliu Formation, Yinggehai Basin, China
Tight sandstone reservoirs have low porosity, low permeability, and a complex pore structure. The seepage from tight sandstones is a key factor in...
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Hydrocarbon Source and Relationship between Hydrocarbon Charging Process and Reservoir Tight Period of the Denglouku Formation Tight Sandstone Gas Reservoirs in the Xujiaweizi Fault Depression, Songliao Basin
The exploration level of tight sandstone gas reservoirs in the Denglouku Formation (DF) in the Xujiaweizi Fault Depression is low, and hydrocarbon...
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Estimation of water saturation based on optimized models in tight gas sandstone reservoirs: a case study of Triassic Xujiahe Formation in northwestern Sichuan Basin
Water saturation estimation faced a great challenge in tight gas sandstone reservoirs because of the effect of pore structure and strong...
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Fracturing Around Dry/Wet Boundary in Tight Sandstones Monitored by Micro-seismicity in Laboratory
Pore fluid significantly affects the mechanical property of rocks. To understand the effect of heterogeneous distribution of pore water with high...
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Genesis and Accumulation of Paleo-Oil Reservoir in Dabei Area, Kuqa Depression, Northwest China: Implications for Tight-Gas Accumulation
Paleo-oil reservoir is of great importance to understand hydrocarbon enrichment mechanism and hydrocarbon exploration potential, but is yet poorly...
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Research on Logging Classification and Evaluation Method for Tight Gas Reservoirs in Yichuan Block, Ordos Basin
The tight gas reservoirs in the Yichuan block of the Ordos Basin have practical problems such as multiple gas bearing layers, poor reservoir...
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Fluid Mobility Evaluation of Tight Sandstones in Chang 7 Member of Yanchang Formation, Ordos Basin
Fluid mobility has been important topic for unconventional reservoir evaluation. The tight sandstones in Chang 7 Member of the Ordos Basin has been...
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Porosity and gas saturation inversion models for tight gas reservoirs in the Northern Ordos Basin
Tight gas reservoirs are characterized by lithological complexity, poor physical properties, high heterogeneity, and variable pore structures, which...
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Quantitative Classification and Prediction of Diagenetic Facies in Tight Gas Sandstone Reservoirs via Unsupervised and Supervised Machine Learning Models: Ledong Area, Yinggehai Basin
Tight gas sandstone reservoirs are commonly characterized by complex diagenetic processes, resulting in time-consuming analysis for manual...
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Effect of gas saturation on P-wave velocity in tight sandstone
By measuring the variation of the P- and S-wave velocities of tight sandstone samples under water saturation, it was confirmed that with the decrease...
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Accumulation Characteristics and Main Controlling Factors of Tight Gas in the Upper Paleozoic in the Eastern Margin of Ordos Basin—A Case Study of Jiaxian Block, Shenmu Gas Field
The Jiaxian block in the eastern margin of Ordos Basin is a new optimized allocation block of Jidong oilfield, which is currently in the early stage...
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A new method of evaluating well-controlled reserves of tight gas sandstone reservoirs
Based on static geology and dynamic production of typical wells in Yan'an gas field, a convenient method of the wells controlled reserves was...
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A Rock Physics Modeling Approach with Pore-Connectivity Parameter Inversion in Tight Sandstone Reservoirs
Tight gas sandstone reservoirs play an important role in the field of exploration and development of unconventional oil/gas resources. However, these...
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Fluid Discrimination Based on Inclusion-Based Method for Tight Sandstone Reservoirs
Fluid discrimination is challenging for reservoir prediction, especially for tight sandstones with special petrophysical properties. In this paper,...
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Investigation on petrophysical properties of fractured tight gas sandstones: a case study of Jurassic Xujiahe Formation in Sichuan Basin, Southwest China
Integrated characterization methods from micro-scale to macro-scale were applied to thoroughly study petrophysical properties of the Upper Triassic...
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Numerical simulation of the dynamic migration mechanism and prediction of saturation of tight sandstone oil
Quantitative characterization of tight sandstone oil migration and accumulation is an emerging research frontier in the field of oil and gas...
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Discrimination of lithofacies in tight gas reservoir using field-specific rock physics modeling scheme. A case study from a mature field of middle Indus Basin, Pakistan
Consistency in the petrophysical and elastic properties is very critical for the characterization in low to intermediate (tight) porosity sandstone...
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Effects of pressure and fluid properties on S-wave attenuation of tight rocks based on ultrasonic experiments
The tight oil/gas reservoirs in China have showed the great exploration prospects and high production potential, with the characteristics of low...