石油实验地质2025，Vol.47Issue(3)：451-465,15.DOI:10.11781/sysydz2025030451
珠江口盆地油气勘探新进展与潜力区带预测
Recent advancements in oil and gas exploration and potential zone prediction in Pearl River Mouth Basin
摘要
Abstract
The Pearl River Mouth Basin(PRMB)is rich in oil and gas resources in the Cenozoic,with proven reserves growing rapidly.Geological breakthroughs,such as the identification of hydrocarbon accumulation controlled by low-angle detachment faults,strike-slip fault-controlled reservoirs in buried hills through weathering and leaching processes,and multi-type reservoir enrichment in deep-water areas,have offered new insights into exploration targets in PRMB.However,the complex geological structure and diverse target types in the basin increase the difficulty of exploration.Therefore,under the guidance of breakthroughs in exploration theory,it is crucial to reassess the Cenozoic oil and gas geological conditions in PRMB and identify potential oil and gas exploration zones.Through comprehensive analysis of the tectonic-sedimentary coupling relationships,hydrocarbon source rock and reservoir conditions,and oil and gas migration characteristics in PRMB,the oil and gas-bearing probability in different zones of PRMB was evaluated,and the total geological resource amount of the Cenozoic was calculated.The PRMB experienced significant tectonic evolution during the Cenozoic,characterized by rifting,post-rift depression,and structural activation.This evolution resulted in the formation of continental,transitional,and shallow marine sedimentary filling features,which controlled the development of two Paleogene hydrocarbon source rocks and two sets of continental and marine reservoirs.The oil and gas geological conditions in the shallow-water areas of the Lufeng,Huizhou,and Wenchang sags were favorable,with oil and gas-bearing proba-bility exceeding 20％and relatively low geological risks.Therefore,these areas were classified as Class I favorable zones.The total geological resource amount of the Cenozoic was approximately 13.8 billion tons,with oil accounting for 71％and natural gas 29％.Based on zone evaluation and actual exploration cases,future exploration should focus on buried hills,Paleogene,and deep-water oil and gas reservoirs,especially searching for those in low-angle detachment faults of the Enping,Kaiping,and Baiyun sags,fractured reservoirs controlled by deep strike-slip faults in buried hills of the Wenchang and Yangjiang sags,and deep-water reservoirs in the Baiyun and Liwan sags.These sags are expected to become important potential exploration zones for future oil and gas exploration in PRMB.关键词
区带含油气概率/有利区带评价/油气地质/勘探进展/珠江口盆地Key words
oil and gas-bearing probability in zones/favorable zone evaluation/oil and gas geology/exploration progress/Pearl River Mouth Basin分类
石油、天然气工程引用本文复制引用
倪春华,李琦,陈贺贺,杨俊,王彦青,宋在超,蒋天赐,黄炳祺,阎泽昊,邢泽正,朱珍君..珠江口盆地油气勘探新进展与潜力区带预测[J].石油实验地质,2025,47(3):451-465,15.基金项目
中国石化科技部项目(P24180)和国家自然科学基金项目(41576066,42306083)共同资助. （P24180）
