For the purpose of exploring the connection between some structural features of the crust and the abundance of oil/gas content, we have defined and computed some characteristic structure parameters which have allowed us to study the mirror-image coupling between sedimentary depression and the upper mantle uplifting in oil/gas-bearing basins. We have obtained quantitative results concerning different tectonic elements on a multi-scale tectonic partition in the oil/gas region of Shengli, China. Factors measuring the activity degree of the crust-mantle interaction and the deviation of the crust from the isostatic equilibrium, together with other parameters related to the sedimentary structure and the deepseated crust, have allowed us to discuss the implications of the mirror-image symmetry for tectonics and exploratory practice.