Oil & Gas Geology ›› 2005, Vol. 26 ›› Issue (4): 402-410.doi: 10.11743/ogg20050402

Previous Articles     Next Articles

Reservoiring process in foreland basins in west-central China

Zhao Mengjun, Song Yan, Qin Shengfei, Liu Shaobo, Hong Feng, Fu Guoyou   

  1. Exploration and Development Research Institute, PetroChina, Beijing
  • Received:2005-07-10 Online:2005-08-25 Published:2012-01-16

Abstract:

Foreland basins in west-central China can be divided into early-failed,reconstructed and superimposed types.Their architectural features have determined the differences of reservoiring conditions,such as source rocks and reservoir-seal combination,in foreland basins.Late development of foreland has obviously controlled the evolution of source rocks in the reconstructed and superimposed foreland basins in west-central China.The differences of reservoiring geological conditions of different foreland basin types in west-central China have determined that they would have different reservoiring processes.Late Yanshanian is the major reservoiring stage of early-failed foreland basins,such as the foreland basin in western Sichuan,while late Himalayan appears as the adjusting and finalizing stages of gas reservoirs.Late Himalayan is the major reservoiring stage of reconstructed foreland basins,such as the foreland thrust belt on the northern edge of Qaidam basin.Superimposed foreland basins,such as the southern Junggar foreland basin,have the characteristics of multistage reservoiring with late Himalayan being the most important reservoiring stage.

Key words: reservoiring condition, reservoiring stage, foreland basin, west-central China

CLC Number: