Shale Gas Accumulation Conditions and Gas-bearing Properties of the Lower Cambrian Shuijingtuo Formation in Well Chengtan 1,Dabashan Complex Tectonic Belt

摘要

Dabashan complex tectonic belt is located in the junction of the Yangtze plate and North China plate,which is the composite products of the Indo-Chinese epoch,Yanshan epoch,Himalayan epoch thrust nappe.Experiencing multiphase complex structural movement,the tectonic belt has been regarded as a forbidden zone in the oil and gas exploration.And it is also a blank area of