四川盆地大庆探区震旦系—寒武系深层天然气勘探潜力分析与实践  

Analysis and practice of exploration potential of Sinian⁃Cambrian deep gas in Daqing exploration area of Sichuan Basin

作　　者：宫宝[1,2] 陈欣 张迪[1,2] 马威奇[1,2] 马新海 隋立伟 杨春宇[1,2] GONG Bao;CHEN Xin;ZHANG Di;MA Weiqi;MA Xinhai;SUI Liwei;YANG Chunyu(Exploration and Development Research Institute of PetroChina Daqing Oilfield Co.,Ltd.,Daqing 163712,China;State Key Laboratory of Continental Shale Oil,Daqing 163712,China;Production Technology Institute of PetroChina Daqing Oilfield Co.,Ltd.,Daqing 163453,China)

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]多资源协同陆相页岩油绿色开采全国重点实验室,黑龙江大庆163712 [3]中国石油大庆油田有限责任公司采油工程研究院,黑龙江大庆163453

出　　处：《大庆石油地质与开发》2025年第2期11-18,共8页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目“中石油‘十四五’油气资源评价”子项目“大庆油田探区‘十四五’油气资源评价”(2023YQX20102)。

摘　　要：四川盆地大庆探区震旦系—寒武系发育多套含气层系,但勘探潜力和有利区带分布不明。通过分析各层系生、储、盖等成藏主控因素,应用地质分析和地球物理一体化综合评价技术,对重点层系勘探潜力和有利区带进行研究。结果表明:震旦系灯影组四段发育2个长期继承性局部构造高带,通源断裂叠加有效储层控制油气富集,部署的HS5井获百万方天然气;震旦系灯影组二段发育次级台缘带,高能丘滩体经过桐湾期岩溶作用改造,形成优质富气储层;寒武系沧浪铺组、龙王庙组、洗象池组沉积时处于古地貌高部位,发育溶蚀孔洞型高能颗粒滩体,含气性好,部署GT1井进行立体揭示。研究成果确定了大庆探区震旦系—寒武系天然气地质资源量超万亿方,为下一步提交规模效益探明储量提供了指导。Several sets of gas-bearing strata develop in Sinian-Cambrian Daqing exploration area of Sichuan Basin,but the distributions of exploration potential and favorable plays are unclear.By analyzing main controlling factors of generation,accumulation and seal of each strata series,exploration potential of key strata series and favorable plays are studied via comprehensive evaluation technique of integrated geological and geophysical analysis.The re-sults show 2 long-term inherited local structural high belts developed in 4th Member of Sinian Dengying Formation.Superposition of source-connecting faults with effective reservoirs controls oil and gas enrichment.Deployed Well HS5 obtains more than 1 million of cubic meters of gas production.Secondary platform margin belt develops in 2nd Member of Sinian Dengying Formation.High-energy mound-shoal complex is reformed by karstification in Tongwan period,forming high-quality gas-rich reservoirs.Sedimentation of Canglangpu Formation,Longwangmiao Forma-tion and Xixiangchi Formation in Cambrian was at paleogeomorphologic high,and developed dissolved vuggy high-energy grain-shoal bodies with good gas-bearing properties.Well GT1 is deployed for 3D revelation.The research confirms gas resources in place of Sinian-Cambrian in Daqing exploration area exceeding 1 trillion cubic meters,and provides guidance for further submission of scale-beneficial proved reserves.

关 键 词：四川盆地 大庆探区 震旦系—寒武系 深层天然气 探明储量 

分 类 号：TE122.24[石油与天然气工程—油气勘探]