... for evaluating the development of overpressure in shale gas reservoirs. In this study, a workflow comprising multiple approaches was used to investigate overpressure evolution and its implications for shale gas enrichment and yield in the Jiaoshiba area, Sichuan Basin, southwestern China. The influence...

... is modified from Wang et al. (2016a) . Figure 2. Simplified stratigraphic units in the Upper Yangtze platform in southern China. The Wufeng-Longmaxi shales in the Jiaoshiba area were mainly deposited in a marine transgression depositional environment. The fine carbonaceous mudstone...

...Yuxuan Wang; Shang Xu; Fang Hao; Baiqiao Zhang; Zhiguo Shu; Qiyang Gou; Yangbo Lu; Fuyun Cong Abstract The organic matter-rich shales in Wufeng-Longmaxi Formation, Jiaoshiba area, Southeast China, are showing a notable petrographic heterogeneity characteristic within the isochronous stratigraphic...

... initial 143 Nd/ 144 Nd ratio ( Peng et al., 2003 ; Uysal et al., 2007 ; Middleton et al., 2014 ). The Wufeng and Longmaxi shales in the Jiaoshiba area host the largest shale gas field in China, with production exceeding 1600 × 10 4 m 3 (i.e., 565 million cubic feet) shale gas per day ( Guo...

...Shang Xu; Fang Hao; Yuanyin Zhang; Qiyang Gou Abstract For the lower Silurian Longmaxi marine shale reservoir in the Jiaoshiba area, Sichuan Basin, China, the traditional P-impedance ( I P ) is insensitive for predicting good reservoirs. As an integral indicator of borehole radioactivity...

..., the first shale gas well of commercial exploitation in China, to analyze the redox conditions of Upper Ordovician Wufeng (O 3 w) and the first member in lower Silurian Longmaxi shale (S 1 l 1 ) in the Jiaoshiba area. Abundant pyrite framboids are observed in these units, with average framboid diameters...

...Tonglou Guo Abstract The organic-rich Lower Silurian Longmaxi and Upper Ordovician Wufeng Shale (LSLUOWS) is one of the most important marine shale gas plays in southern China, with relatively high thermal maturity and complex structural evolution. The delineation of the Jiaoshiba shale gas play...

... into four depositional facies (facies I, II, II, IV). Details of each depositional facies’ characteristics are shown in Table 1 and Figure 4 . The Jiaoshiba block at the southeast edge of the Sichuan Basin in China ( Figure 1 ) is known for its abundant reserves and large shale gas production...

...Cheng Yu; Chaomo Zhang; Wenrui Shi; Menglei Li; Wei Yan ABSTRACT As a country rich in shale gas, China has developed relatively mature evaluation systems for marine shale exploration and conducted tentative developments for continental shale. However, limited research has been conducted on marine...

... commercial flow ( Wang et al., 2014 ). The Jiaoshiba, Weiyuan, and Changning areas have become the main shale gas production base in China, accounting for a total production of 103 × 10 8 m 3 (364 BCF) in 2018. However, other areas such as Youyang, Baojing, and Shizhu produce no gas. Tectonic processes...

...) in the Jiaoshiba anticline is also marked in Figures 1A and 1C . Figure 1. Tectonic setting and stratigraphy of the eastern Sichuan Basin in the upper Yangtze area (South China block). (A) Main tectonic unit in the eastern margin of the Tibetan plateau. (B) Schematic Paleozoic stratigraphic column...

... combined with optical microscopy observations and core and well-log data to investigate the genesis, distribution characteristics, main controlling factors and pore features of clay minerals of the Lower Silurian Longmaxi Formation in the East Sichuan area, China. The clay mineral assemblage consists...

... productive Silurian gas shale with high thermal maturity and complex evolution history southeastern Sichuan Basin, China : Interpretation , 3 , no.  2 , SJ25 – SJ34 , doi: http://dx.doi.org/10.1190/INT-2014-0148.1 . Guo T. L. Zhang H. R. , 2014 , Formation and enrichment mode of Jiaoshiba...