Results 21 to 30 of about 1,809,092 (140)

Pyrolysis-gas chromatography-mass spectrometry analyses of oil-bearing fluid inclusions composition

open access: yesShiyou shiyan dizhi, 2021
The molecular compositions of oil-bearing fluid inclusions (FIs) are valuable for the research of oil and gas accumulation; however, due to the very trace amount of materials included, the requirements of commercial instruments cannot be satisfied and ...
Yan'e CHEN   +2 more
doaj   +1 more source

Constraints on Diagenetic Fluid Source and Genesis in Tight Dolostone Reservoir of Submember Ma55 of Ordovician Majiagou Formation in Northwestern Ordos Basin, China: Evidence from Petrology and Geochemistry

open access: yesGeofluids, 2022
Diagenetic fluids is one of the most important reservoir modifiers, their differences can result in various petrography, storage capacity, and geochemical characteristics, so clarifying the diagenetic fluids is vital for understanding dolostone origin ...
Baiqiang Li   +5 more
doaj   +1 more source

Hydrocarbon Charge History of the Upper Paleozoic, Ordos Basin as Revealed by Fluid Inclusions

open access: yesFrontiers in Physics, 2022
The petrographic characteristics of fluid inclusions of the main gas-bearing intervals of the Upper Paleozoic in the Ordos Basin are analyzed by means of plane-polarized light, fluorescence microscopy, and microthermometry. With the burial history of the
Qing Cao   +4 more
doaj   +1 more source

Microscopic recognition of micro fossils in carbonate rocks based on convolutional neural network

open access: yesShiyou shiyan dizhi, 2021
The identification of microfossils in carbonate rocks with thin-section observation is of great significance for the study of sedimentary environment, but the traditional method by manual identification is highly experience required and is greatly ...
Xiaolu YU   +4 more
doaj   +1 more source

TOC interpretation of lithofacies-based categorical regression model: A case study of the Yanchang formation shale in the Ordos basin, NW China

open access: yesFrontiers in Earth Science, 2023
In this paper, taking the shale of Chang 7-Chang 9 oil formation in Yanchang Formation in the southeastern Ordos Basin as an example, through the study of shale heterogeneity characteristics, starting from the preprocessing of supervision data set, a ...
Jintao Yin   +12 more
doaj   +1 more source

Petroleum accumulation: from the continuous to discontinuous

open access: yesPetroleum Research, 2017
Based on the extensive studies of conventional and unconventional hydrocarbon accumulations, the concept, classification and formation as well as distribution of petroleum reservoirs are discussed. The revised concept defined the petroleum reservoir as a
Jingzhou Zhao   +6 more
doaj   +1 more source

Numerical Simulation Study of Pore-Throat Evolution of Upper Paleozoic in Ordos Basin, China

open access: yesGeofluids, 2021
The parameters of grain size, contents of silica, kaolinite, hydromica, calcite, and a geological time of tight sandstone reservoirs in Upper Paleozoic in Ordos basin were researched thoroughly, and the impact of the diagenetic evolution process of ...
Qing Cao   +5 more
doaj   +1 more source

Siliceous and calcareous sources in marine high-quality hydrocarbon source rocks: skeleton-wall-shell of organism and their debris

open access: yesShiyou shiyan dizhi
Using techniques such as ultra-microscopic organic petrology, the study explores the relationship between bioclasts such as siliceous and calcareous skeleton-wall-shell organism and high-quality hydrocarbon source rocks in terms of their biomolecular ...
Longfei LU   +5 more
doaj   +1 more source

Pore types, genesis, and evolution model of lacustrine oil-prone shale: a case study of the Cretaceous Qingshankou Formation, Songliao Basin, NE China

open access: yesScientific Reports, 2022
A comprehensive characterisation of the pore structure in shale oil reservoirs is essential for forecasting oil production and exploration risks. This study forecasted these risks in the oil-rich Songliao Basin using combination of high-resolution field ...
Wenyuan He   +8 more
doaj   +1 more source

Characterization of Residual Oil Distribution in Sandstone by NMR: A Microscopic View on Oil Recovery by Miscible CO2 Flooding

open access: yesLithosphere, 2022
Miscible CO2 flooding gains rising popularity due to high displacement efficiency and potential carbon negativity. It is well documented that pore-level heterogeneity is one of the dominant mechanisms responsible for the variation in oil recovery ...
Anlun Wang   +9 more
doaj   +1 more source

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