Diagenetic fluids evolution and genetic mechanism of tight sandstone gas reservoirs in Upper Triassic Xujiahe Formation in Sichuan Basin, China

2008 ◽  
Vol 51 (9) ◽  
pp. 1340-1353 ◽  
Author(s):  
RuKai Zhu ◽  
CaiNeng Zou ◽  
Nai Zhang ◽  
XueSong Wang ◽  
Rong Cheng ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Upper Triassic ◽  
Genetic Mechanism ◽  
Gas Reservoirs ◽  
Tight Sandstone ◽  
Xujiahe Formation ◽  
Diagenetic Fluids

scholarly journals Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7225
Author(s):  
Chuantong Ruan ◽  
Jing Ba ◽  
José M. Carcione ◽  
Tiansheng Chen ◽  
Runfa He
Keyword(s):  
Sichuan Basin ◽  
Rock Physics ◽  
Wave Impedance ◽  
Gas Production ◽  
P Wave ◽  
Gas Reservoirs ◽  
Tight Sandstone ◽  
Amplitude Variation With Offset ◽  
Xujiahe Formation ◽  
Seismic Properties

Low porosity-permeability structures and microcracks, where gas is produced, are the main characteristics of tight sandstone gas reservoirs in the Sichuan Basin, China. In this work, an analysis of amplitude variation with offset (AVO) is performed. Based on the experimental and log data, sensitivity analysis is performed to sort out the rock physics attributes sensitive to microcrack and total porosities. The Biot–Rayleigh poroelasticity theory describes the complexity of the rock and yields the seismic properties, such as Poisson’s ratio and P-wave impedance, which are used to build rock-physics templates calibrated with ultrasonic data at varying effective pressures. The templates are then applied to seismic data of the Xujiahe formation to estimate the total and microcrack porosities, indicating that the results are consistent with actual gas production reports.

Diagenesis of tight sandstone reservoirs of Xujiahe Formation (Upper Triassic), the Xinchang Gas Field, western Sichuan Basin, China

2019 ◽  
Vol 55 (6) ◽  
pp. 4604-4624
Author(s):  
Yi‐Jiang Zhong ◽  
Ke‐Ke Huang ◽  
Li‐Ming Ye ◽  
Ye‐Fang Lan ◽  
Lei Liu
Keyword(s):  
Sichuan Basin ◽  
Upper Triassic ◽  
Tight Sandstone ◽  
Gas Field ◽  
Xujiahe Formation ◽  
Western Sichuan ◽  
Sandstone Reservoirs ◽  
Western Sichuan Basin
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