摘要
The theory of geomechanics created by well known geologist Dr Li Siguang has been applied to effectively guide the China’s oil and gas exploration works and make successful discoveries of numerous oil and gas fields.This paper summarizes the domestic exploration efforts of several large-and medium-sized basins and puts forward the understandings of petroleum control patterns by five types of structur al systems such as the structural system hierarchical oil-control pattern,structural system superposition control pattern,structural system complex control pattern,structural system multistage control pattern and low level shear structures control one.It is believed that such un derstandings are of important significances to guiding the current and future oil and gas exploration in China.