This book is a memoir summarizing the exploration experiences of the pasttwenty years in gas field of high steep structures of eastern Sichuan. The analysison five fold-deformation styles of high steep structures gives the vertical variationmodel of the high steep structures.Petroleum generation model,petroleumpotential. reservoir characteri stics. migration and accumulation course,preservation of Carboniferous natural gaspools and pool forming model are systemmatically discussed in this book. E