Abstract:

The reformed basins were the prototype basins which were evidently reformed during post-stage structural movements;those underwent weak erosion and reformation are still prototype basins.As for oil and gas exploration,basin means connectedly distributed sedimentary rock mass;as for the reserves,about 50% of oil reserves and 70% of gas reserves are in reformed basins.Those basins are the main targets of hydrocarbon exploration in the 21st century since their exploration degree is low.In the research of basin reformation,regional uncomformity is an important factor in influencing the oil and gas distribution of the basins,thus the uncomformity and the strata above and below it should be taken as a special geological body.The multicycle opening-closing movement of the crust is the key to understand the basin reformation and its hydrocarbon evolution.One should investigate the oil and gas pools by means of the positive and opposite thinkings of the prototype and present basins.

Key words: reform in basin, prototype basin, unconformity, opening-closing movement, opposite thinking