天然气工业2025，Vol.45Issue(12)：66-83,18.DOI:10.3787/j.issn.1000-0976.2025.12.006
四川盆地"十三五"规划以来油气勘探重大新进展与启示
Oil and gas exploration in the Sichuan Basin since the 13th Five-Year Plan:Significant advances and implications
摘要
Abstract
The Sichuan Basin is abundant in natural gas resources and has a long history of natural gas development,attracting many oil and gas companies to carry out oil and gas exploration and development,work,with the PetroChina Southwest Oil & Gasfield Company as the key operator and pioneer.Since the 13th Five-Year Plan,this company has made significant progress in petroleum exploration in the Sichuan Basin by following the strategy of embracing a portfolio of onshore and offshore projects covering both conventional and unconventional resources.Through a systematic analysis of the evolutionary characteristics of sedimentary structures and the formation patterns of large-scale reservoir-controlling geological units in the Sichuan Basin,this paper reviews the significant advances in geological understanding of marine and continental hydrocarbon exploration since the 13th Five-Year Plan,comprehensively evaluates the exploration potential in all fields,and outlines the directions of exploration during the 15th Five-Year Plan period.The following results are obtained.First,the formation and evolution of large-scale geological units are controlled by the tectonic evolution of three major Tethyan domains.The favorable zones of marine carbonate and shale gas are governed by the large-scale geological units centered on paleouplifts,paleorifts,paleo-erosion surfaces,and depressions around uplifts.Additionally,the pattern of orderly continental tight oil/gas distribution towards thrust belts,depression belts,and slope-uplift belts is determined.Second,based on regional geological evaluations,some new exploration targets such as the Dengying Formation in the Anyue-Penglai area,the Maokou Formation in central Sichuan Basin,and tight oil and gas in foreland basins are effectively defined,and five major trillion-cubic-meter-scale gas exploration fronts take shape,including Sinian-Lower Paleozoic,Permian-Triassic,continental tight gas,deep Longmaxi Formation shale gas,and new shale gas layers,which have led to the substantial growth of proven gas reserves,with an annual average reserve of 3 050× 108 m3.Third,according to the exploration practices,the Sichuan Basin exhibits long cycles in understanding its geological characteristics and discovering a large quantity of resources owing to its complex geological and geographic conditions,and thus presents a remarkable"phased pulsing"characteristic in reserves growth.The idea transformation,cognitive breakthrough and technical advancement will bring about significant progress and discovery in exploration,thereby leading to peak growth of reserves and production.In conclusion,this study comprehensively deepens the theoretical understanding of the whole petroleum system in the Sichuan Basin,and continuously expands the depth and breadth of petroleum exploration.It points out the directions of large-scale growth and efficient conversion of natural gas reserves in the Sichuan Basin,and helps to solidify the resource foundation for the construction of a hundred-billion-cubic-meter-scale oil and gas production base in the Sichuan-Chongqing region.关键词
四川盆地/海相克拉通/陆相致密油气/勘探进展/勘探方向/勘探潜力/油气资源/勘探启示Key words
Sichuan Basin/Marine craton/Continental tight oil and gas/Exploration progress/Exploration direction/Exploration potential/Hydrocarbon resource/Exploration implication分类
能源科技引用本文复制引用
文龙,杨雨,罗冰,谢继容,黄平辉,肖尧,赵容容,刘冉,王尉..四川盆地"十三五"规划以来油气勘探重大新进展与启示[J].天然气工业,2025,45(12):66-83,18.基金项目
新型油气勘探开发国家科技重大专项项目"四川盆地全油气系统与新领域勘探技术"(编号:2025ZD1400400)、中国石油天然气集团有限公司攻关性应用性科技专项项目"海相碳酸盐岩油气规模增储上产与勘探开发技术研究"(编号:2023ZZ16). （编号:2025ZD1400400）
