Optimization for selecting oil and gas exploration zones

The invention discloses a method for optimizing oil and gas exploration zones. The method comprises the following steps: a hydrocarbon source evolution and recovery step of recovering a hydrocarbon source rock kerogen hydrocarbon generation history, utilizing a reservoir temperature history and a pyrolysis temperature window method to determine the generation time of fossil oil reservoir pyrolysis gas and adopting a paleotectonic map and a Goodwin figure method to obtain a spatiotemporal evolution process of a fossil oil reservoir pyrolysis hydrocarbon kitchen; a caprock seal ability evolution and recovery step of in a building stage, utilizing a porosity-displacement pressure history method to recover a forming process of muddy caprock seal ability in the building stage, and in a transformation stage, utilizing a permeability-displacement pressure history method to recover a displacement pressure evolution history of a muddy caprock in a lifting process and adopting an over-consolidation ration (OCR) history method to quantitatively restrict a seal ability evolution process of the muddy caprock in the lifting process; and a source caprock matching judgment step of judging the precedence relationship among the forming time of the muddy caprock seal ability, the hydrocarbon generation time of the underlying hydrocarbon source rock kerogen of the muddy caprock and the generation time of the fossil oil reservoir pyrolysis gas, and determining whether the caprock is a dynamic effective caprock in geological time.