Deep shale gas (burial depth > 3500 m) in the Longmaxi Formation of southern Sichuan Province will be primary target for exploration and development China a relatively long period. However, lack physical basis “sweet-spots” seismic well-logging prediction is caused by uncertainty rock properties deep research area. Acoustic hardness measurements were performed on samples from layer Sichuan. ...

Adsorbed gas is an important component of shale gas. The methane adsorption capacity determines the composition In this study, marine, transitional, and lacustrine shales in Sichuan Basin was analyzed through its isothermal adsorption, mineral composition, water content, etc. results show that marine (Qiongzhusi Formation Longmaxi Formation), transitional (Longtan (Xujiahe Ziliujing Formation) ...

Compared with shale gas in north American, it is older, more mature, and significantly difference China. Taking the Longmaxi Formation of WY block Sichuan Basin as an example, quantitative prediction method sweet spots for high mature formed. Firstly, geophysical response characteristics reservoir studied, physical are determined. Then, distributions evaluation parameters, such total organic ca...

Abstract Based on total organic content (TOC) tests and major-trace element test data, this study examined matter accumulation controlling factors of the Longmaxi Formation shale in Changning area, southern Sichuan Basin. The results showed that (1) TOC Long11 submember (S 1 l ) was between 0.46% 8.35%. Vertically, revealed a ‘sandwich cake’ pattern with high concentrated 1st layers 1–1 3rd 1–3...

The Upper Ordovician Wufeng to Lower Silurian Longmaxi Formation has a good material basis for marine shale gas development, and the structural preservation condition is key factor control rich integrated reservoirs in Wuxi area of Chongqing City, China. Based on seismic-structural interpretation data, combined with regional background drilling effect, deformation characteristics conditions are...