Characteristics of Silurian destroyed oil reservoir in Houtan section of Xishui area in southeastern margin of Sichuan Basin

The karst rocks in the Carboniferous Huanglong formation is one of the major gas reservoir types in the area between the northern Chongqing and Linshui in east Sichuan basin.

The analysis of the kerogen from the marine environments on the northern and southern margins of the Sichuan Basin shows that the type Ⅲ kerogen,which comprises the vascular plant compositions such as tracheid,lignin and cellulose,occurs in large quantities in the Lower Silurian strata near the old land,whereas type Ⅰ kerogen has been found in the areas far away from the old land.

Sequence stratigraphy and coal accumulation of the Upper Triassic Xujiahe Formation in eastern Sichuan Basin

The formation process and charging history of the Carboniferous gas pools in eastern Sichuan basin are reconstructed through the study of hydrocarbon fluid inclusions from the secondary calcite vein in carbonate reservoirs.