The natural gas in the Wen'an slope buried-hill belts, Jizhong sub-basin has become an important target area for the deep and ultra-deep reservoir explorations in the Bohai Bay basin. However, the gas sources, charging history and gas accumulation…
To investigate the mechanism of local porosity modification in a carbonate reservoir caused by the acidic components associated with natural gas generation, a numerical model for the charging of natural gas rich in acidic components (CO2) was…
A comparative study on organic geochemistry and kinetics was performed on two representative coal measure mudstone and coal samples of the Eocene Pinghu Formation in the Xihu Sag, East China Sea Shelf Basin, China. Gas chromatographymass spectrometry…
A systematic study into the origin and potential formation processes of condensates in the Pinghu Slope Belt of the Xihu Depression, East China Sea Basin, was conducted using fluid inclusion analysis, petroleum geochemistry, and rock gold-tube…
The Ordos Basin is abundant in natural gas resources, and the Shanxi Formation with the transitional facies is considered as a potential stratum for shale gas reservoir. However, the origin and geochemical characteristics of the Shanxi Formation…
The deep coal-measure gas, including coalbed methane (CBM), tight gas (TG) and shale gas (SG), has attracted widely attention because of its great potential for natural gas development and multiple benefits. To determine the gas origin, migration and…
The origin and potential source of the presalt natural gas in the Lower Paleozoic Ordovician carbonates within the Ordos Basin, China, is heavily debated, and the causes of carbon isotope reversal are currently unclear. This study analyzes the source…
In recent years, great breakthroughs have been achieved in the exploration of Shaximiao Formation tight gas in Jinqiu Gas Field in central Sichuan-western Sichuan transition zone, and multi-stage gas rich sandstone formations have been discovered…
Predicting the distribution and resource of gas hydrates and understanding gas hydrate forming mechanisms are critical for assessing natural gas hydrate exploration potential, as well as exploiting hydrates. This study aims to provide a portable…
We established the generation and migration processes as well as the influence of secondary processes of oil and natural gas accumulated in Lower Cretaceous-Oligocene strata of the western part of the Ukrainian Outer Carpathians based on the results…
The generation and migration processes, as well as the influence of secondary processes, on oil and natural gas accumulated in Lower Cretaceous-lower Miocene strata of the central part of the Ukrainian outer Carpathians are discussed. Type II and…
Large-scale gas accumulation areas in large oil-gas basins in central and Western China have multiple special accumulation mechanisms and different accumulation effects. Based on the geological theory and method of natural gas reservoir formation,…
This paper studied the origin and the maturity of the Jurassic subsalt condensate in the northeastern margin of the Amu Darya Basin and analyzed its formation condition and mechanism through conducting geochemical analysis of biomarkers, carbon…
The Xihu Sag in the East China Sea Basin is rich in natural gas resources, but the sources of its natural gas have always been controversial. The existing researches mostly adopt the source rock maturity for gas source correlation without any direct…
According to the chemical, carbon isotopic, and hydrogen isotopic compositions and 3He/4He ratios of 127 natural gas samples, the natural gas in the Tarim Basin is mainly composed of gaseous alkanes dominated by methane. The contents of the gaseous…
The Xujiaweizi fault depression is rich in natural gas resources in Lower Cretaceous and a major fault depression of the deep strata in northern Songliao Basin. In this study, the tight gas is coaliferous gas in the K1sh Formation of the Xujiaweizi…
As the first giant shale gas field in China, the Fuling gas field has recently been regarded as one of the most important regions for natural gas exploration and production in the Sichuan Basin. However, the origin of natural gas from Upper…
To better understand gas migration and accumulation in tight sandstone reservoirs, we conducted an integrated petrographic and geochemical analysis of hydrocarbon and aqueous fluid inclusions. This analysis was combined with the burial and multistage…
The geochemical characteristics of natural gases from Lower Paleozoic Jingbian gas field are abnormal and the carbon isotope of most natural gases has reversed, which led to a dispute over the source of natural gas in the Lower Paleozoic. The Upper…
Marine basin contains abundant natural gas resources in China, especiallythe Palaeozoic is becoming a hotspot of natural gas exploration, wherea series of large gas fields have been constantly discovered. It isbroad consensusthathigh-post mature…
Coalbed gas (CBG) is a typical self-generated and self-stored gas and is one of the most ideal materials for studying the geological-geochemical models of natural gas and its source rock. However, studies show that CBG is usually a mixed gas…
The genesis of natural gas in the Bozhong 19-6 gas condensate field in the Bohai Bay Basin is analyzed by means of petroleum geochemical analyses, and the genetic relationship between condensate and natural gas is thereby determined. The results show…
Low maturity coal samples were taken from the Ordos Basin to conduct gold tube thermal simulation experiment in a closed system, and the characteristics of the products were analyzed to find out the fractionation mechanism of carbon isotopes and the…
The Permo-Carboniferous sandstones in the Gubei area, Bohai Bay Basin, are reservoirs for large accumulations of natural gas. The natural gas accumulations only occur in the sandstone beds thicker than 1.9 m. Moreover, the maximum porosity of every…
Carbon isotopic anomaly occurs in the central gas field of the Ordos Basin (δ13C1 > δ13C2), and natural gas is mainly stored in the Ordovician Majiagou Formation dolomite (OMFD). Inorganic geochemical characteristics of the OMFD, including oxygen,…
Since the discovery of the Kelameili gas field, the exploration of volcanic gas reservoirs in the Junggar Basin has attracted considerable attention. However, owing to the limitations involved in studying the characteristics of the origin and…
Among all fossil fuels, natural gas is the most environmentally friendly one. It is no doubt that natural gas will become a major clean energy resource worldwide in the coming decades. Increase in the price of energy sources has caused cryogenic…
The geochemical characteristics of natural gases from Lower Paleozoic Jingbian gas field are abnormal and the carbon isotope of most natural gases has reversed, which led to a dispute over the source of natural gas in the Lower Paleozoic. The Upper…
The origin, migration pathways, and the influence of secondary processes of oil and natural gas accumulated in Lower Cretaceous to Lower Miocene strata of the central part of the Polish Outer Carpathians are investigated based on organic geochemical…
The chemical and stable isotopic compositions of 24 gas samples were investigated to determine the geochemistry and accumulation process of the Shenmu Gas Field (SGF), Ordos Basin, central China. Natural gas of the SGF includes both wet and dry gas…
The Ordos Basin is abundant in natural gas resources, and the Shanxi Formation with the transitional facies is considered as a potential stratum for shale gas reservoir. However, the origin and geochemical characteristics of the Shanxi Formation…
The deep coal-measure gas, including coalbed methane (CBM), tight gas (TG) and shale gas (SG), has attracted widely attention because of its great potential for natural gas development and multiple benefits. To determine the gas origin, migration and…
Carbon isotopic anomaly occurs in the central gas field of the Ordos Basin (δ13C1 > δ13C2), and natural gas is mainly stored in the Ordovician Majiagou Formation dolomite (OMFD). Inorganic geochemical characteristics of the OMFD, including oxygen,…
The origin and potential source of the presalt natural gas in the Lower Paleozoic Ordovician carbonates within the Ordos Basin, China, is heavily debated, and the causes of carbon isotope reversal are currently unclear. This study analyzes the source…
Since the discovery of the Kelameili gas field, the exploration of volcanic gas reservoirs in the Junggar Basin has attracted considerable attention. However, owing to the limitations involved in studying the characteristics of the origin and…