Contents1 Introduction to Quantitative Evaluation of the Whole Petroleum System 11.1 Major ChallengesFacing Oil and Gas Exploration 21.1.1 Progress in Oil and Gas Exploration and Research 21.1.2 Breakthrough of Unconventional Oil and Gas Exploration to Classic Petroleum System 41.1.3 Oil and Gas Exploration PracticesFacing Signi.cant Challenges 81.2 QuantitativeEvaluation Methodsof the WPS 101.2.1 Concept and Connotationof the WPS 101.2.2 Contents and Research Ideas of Quantitative EvaluationoftheWPS 171.2.3 PrincipleandWork.owof QuantitativeEvaluation fortheWPS 211.3 Progress and Case Studies of Quantitative Evaluation ontheWPS 261.3.1 There Are3Categories10Typesof Hydrocarbon Thresholds 261.3.2 Hydrocarbon Migration Thresholds Jointly Controlling Oil and Gas Resource 281.3.3 Hydrocarbon Dynamic Fields Jointly Controlling Oil and Gas ResourceTypes 301.3.4 Hydrocarbon Distribution Thresholds Jointly Controlling Oil and Gas Enrichm