渤海湾盆地南堡凹陷全油气系统3类油气资源联合评价  

Joint evaluation of three types of oil-gas resources in whole petroleum system of Nanpu sag,Bohai Bay Basin

作　　者：姜福杰[1,2] 郭婧 庞雄奇[1,2] 陈迪 王建伟[3] 汪英勋[4] 李亚茜 陈雪 郭婷玮 房舟 王晓昊 齐振国 文嘉豪 Jiang Fujie;Guo Jing;Pang Xiongqi;Chen Di;Wang Jianwei;Wang Yingxun;Li Yaxi;Chen Xue;Guo Tingwei;Fang Zhou;Wang Xiaohao;Qi Zhenguo;Wen Jiahao(College of Geoscience,China University of Petroleum,Beijing 102249,China;National Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum(Beijing),Beijing 102249,China;Research Institute of Exploration and Development,PetroChina Jidong Oilfield Company,Hebei Tangshan 063004,China;China Zhenhua Oil Co.,Ltd.,Beijing 100031,China;Consulting and Research Center,Ministry of Natural Resources of the People's Republic of China,Beijing 100035,China;Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]油气资源与工程全国重点实验室,中国石油大学(北京),北京102249 [3]中国石油冀东油田公司勘探开发研究院,河北唐山063004 [4]振华石油控股有限公司,北京100031 [5]自然资源部咨询研究中心,北京100035 [6]北京理工大学,北京100081

出　　处：《石油学报》2023年第9期1472-1486,共15页Acta Petrolei Sinica

基　　金：中国石油科学研究与技术开发项目“油气地质基础新理论新技术研究”项目01课题“全油气系统理论与非常规油气成藏机理”(2021DJ0101)资助。

摘　　要：在近几年的勘探实践中,渤海湾盆地南堡凹陷的非常规油气资源展现出一定的勘探前景,但常规与非常规油气的资源评价彼此分离,评价结果没有制约关系,不能反映实际情况。应用全油气系统成藏理论模式实现了南堡凹陷常规与非常规油气资源的联合定量评价,有望指导未来油气勘探。研究结果显示:南堡凹陷以浮力成藏下限为界,位于自由油气动力场内的常规油气原始烃量为18.07×10~8t,位于局限油气动力场内的致密油气原始烃量为38.72×10~8t,而位于油气成藏底限之下束缚油气动力场内的页岩油气原始烃量为107.46×10~8t。3类资源的联合评价结果显示:南堡凹陷的页岩油气资源量为7 577.37×10~4t,高于致密油气和常规油气的资源量;常规油气资源量为7 074.37×10~4t,在凹陷中居第二位;致密油气资源量最小,为4 985.89×10~4t。3类资源的联合评价结果指导了南堡凹陷页岩油的发现,发现了沙河街组三段Ⅳ—Ⅴ油组的致密油藏,为中—浅层常规油气的目标优选提供了技术支撑。In the exploration practice during recent years,the unconventional oil-gas resources of Nanpu sag in Bohai Bay Basin have demonstrated some exploration prospects.However,the evaluations on conventional and unconventional oil-gas resources are mutually separated and the evaluation results are not restrictive,which cannot reflect the actual condition.The joint quantitative evaluation of conventional and unconventional oil-gas resources is realized using the theoretical pattern of reservoir accumulation in whole petroleum system,which is expected to guide the future oil-gas exploration.The results show that Nanpu sag is bounded by lower limit of buoyance-driven hydrocarbon accumulation depth(BHAD),where the original hydrocarbon quantity of conventional oil-gas in a free hydrocarbon dynamic field(F-HDF) is 18.07×10~8t,that of tight oil-gas in a confined hydrocarbon dynamic field(C-HDF) is 38.72×10~8t,and that of shale oil-gas in a bound hydrocarbon dynamic field(B-HDF) under the bottom limit of oil-gas accumulation is 107.46×10~8t.The joint evaluation results of three types of oil-gas resources show that the amount of shale oil-gas resources in Nanpu sag is 7 577.37×10~4t,higher than that of tight and conventional oil-gas resources;the amount of conventional oil-gas resources is 7 074.37×10~8t,ranking second in Nanpu sag;the amount of tight oil-gas resources is the lowest,namely 4 985.89×10~8t.The joint evaluation results of these resources provide a guide for the discovery of shale oil in Nanpu sag,based on which tight reservoirs are discovered in Ⅳ and Ⅴ oil formations of the Member 3 of Shahejie Formation,thus providing technical support for the target optimization of conventional oil-gas in middle-shallow sequences.

关 键 词：全油气系统 油气资源评价 资源量 南堡凹陷 渤海湾盆地 

分 类 号：TE122.3[石油与天然气工程—油气勘探]