Maturity and thermal evolution differences between two sets of Lower Palaeozoic shales and its significance for shale gas formation in south‐western Sichuan Basin, China

2021 ◽  
Author(s):  
Ye Wang ◽  
Nansheng Qiu ◽  
Xiaomin Xie ◽  
Zhongliang Ma ◽  
Longlong Li ◽  
...  
Keyword(s):  
Shale Gas ◽  
Sichuan Basin ◽  
Thermal Evolution ◽  
Western Sichuan ◽  
Gas Formation ◽  
Lower Palaeozoic ◽  
Western Sichuan Basin

Factors Affecting Shale Gas Accumulation in Overmature Shales Case Study from Lower Cambrian Shale in Western Sichuan Basin, South China

2018 ◽  
Vol 32 (3) ◽  
pp. 3003-3012 ◽  
Author(s):  
Yuying Zhang ◽  
Zhiliang He ◽  
Shu Jiang ◽  
Shuangfang Lu ◽  
Dianshi Xiao ◽  
...  
Keyword(s):  
South China ◽  
Shale Gas ◽  
Lower Cambrian ◽  
Sichuan Basin ◽  
Factors Affecting ◽  
Western Sichuan ◽  
Gas Accumulation ◽  
Western Sichuan Basin

scholarly journals Dominant Large-Scale Atmospheric Circulation Systems for the Extreme Precipitation over the Western Sichuan Basin in Summer 2013

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yamin Hu ◽  
Panmao Zhai ◽  
Lihong Liu ◽  
Yang Chen ◽  
Yanju Liu
Keyword(s):  
Extreme Precipitation ◽  
Sichuan Basin ◽  
Large Scale ◽  
Function Technique ◽  
Western Sichuan ◽  
Cold Flow ◽  
Circulation Patterns ◽  
Anomalous Anticyclone ◽  
Western Sichuan Basin ◽  
Large Scale Atmospheric Circulation

The western Sichuan Basin (WSB) is a rainstorm center influenced by complicated factors such as topography and circulation. Based on multivariable empirical orthogonal function technique for extreme precipitation processes (EPP) in WSB in 2013, this study reveals the dominant circulation patterns. Results indicate that the leading modes are characterized by “Saddle” and “Sandwich” structures, respectively. In one mode, a TC from the South China Sea (SCS) converts into the inverted trough and steers warm moist airflow northward into the WSB. At the same time, WPSH extends westward over the Yangtze River and conveys a southeasterly warm humid flow. In the other case, WPSH is pushed westward by TC in the Western Pacific and then merges with an anomalous anticyclone over SCS. The anomalous anticyclone and WPSH form a conjunction belt and convey the warm moist southwesterly airflow to meet with the cold flow over the WSB. The configurations of WPSH and TC in the tropic and the blocking and trough in the midhigh latitudes play important roles during the EPPs over the WSB. The persistence of EPPs depends on the long-lived large-scale circulation configuration steady over the suitable positions.

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