Orderly distribution of oil and gas and the main controlling factors for the differential hydrocarbon enrichment in Nanpu Sag

doi:10.3969/j.issn.1672-7703.2024.02.009

Abstract

Abstract: The distribution order of oil and gas is a major means to characterize the law of differential hydrocarbon enrichment, providing an important basis for the identification of replacement orientations. The systematic analysis has been conducted, including oil and gas reservoir types, oil and gas properties, degree of hydrocarbon enrichment, hydrocarbon transport system and fault-cap rock conditions, which supports to determine the main controlling factors for the orderly distribution and differential enrichment of oil and gas in Nanpu Sag. The study results show that, from the center to the margin of sub-sags in Nanpu Sag, it shows an orderly change from lithologic oil and gas reservoirs to structural oil and gas reservoirs, the crude oil properties gradually deteriorate, and hydrocarbon gradually enriches in shallower formations. The tectonic activities during the fault and depression periods controlled the distribution and evolution of source rocks, and the tectonic evolution controlled the sedimentary system in the sag and the distribution of reservoir-cap rock combinations and trap type. Among them, three types of reservoir-cap rock combinations below, within and above source rock laid the foundation for multi-layer hydrocarbon distribution. The vertical and lateral transport system and the differential fault-cap rock configuration controlled the process of hydrocarbon migration and accumulation in different structural belts, forming the general law of hydrocarbon enrichment below source rock in the central sag and above source rock in the marginal sag. The study results further reveal the regular distribution of oil and gas in the sag, which provide theoretical guidance and reference for the fine exploration in mature exploration areas.

CLC Number:

TE112.1

Liu Guoyong, Liu Hua, Chen Lei, Meng Lingjian, Liu Jingdong, Ou-Yang Guanyu, Liu Haiqing. Orderly distribution of oil and gas and the main controlling factors for the differential hydrocarbon enrichment in Nanpu Sag[J]. China Petroleum Exploration, 2024, 29(2): 112-122.

References

[1] 范婕，蒋有录，刘景东，等.松辽盆地长岭断陷龙凤山地区油气分布有序性及其主控因素[J].天然气工业，2018,38(5):52-60.
Fan Jie, Jiang Youlu, Liu Jingdong, et al. Orderliness of hydrocarbon distribution in the Longfengshan area of the Changling fault depression, Songliao Basin, and its main controlling factors[J]. Natural Gas Industry, 2018,38(5): 52-60.
[2] 王永诗，郝雪峰，胡阳.富油凹陷油气分布有序性与富集差异性：以渤海湾盆地济阳坳陷东营凹陷为例[J].石油勘探与开发，2018,45(5): 785-794.
Wang Yongshi, Hao Xuefeng, Hu Yang. Orderly distribution and differential enrichment of hydrocarbon in oil-rich sags: a case study of Dongying Sag, Jiyang Depression, Bohai Bay Basin, east China[J]. Petroleum Exploration and Development, 2018,45(5):785-794.
[3] 刘雅利，王永诗，郝雪峰，等.渤南洼陷油气分布有序性探讨[J].油气地质与采收率，2014,21(4):10-15.
Liu Yali, Wang Yongshi, Hao Xuefeng, et al. A discussion on the continuance of hydrocarbon distribution in Bonan Sag[J]. Petroleum Geology and Recovery Efficiency, 2014,21(4):10-15.
[4] 胡朝元.生油区控制油气田分布：中国东部陆相盆地进行区域勘探的有效理论[J].石油学报，1982,3(2):9-13.
Hu Chaoyuan. Source bed controls hydrocarbon habitat in continental basins, east China[J]. Acta Petrolei Sinica, 1982, 3(2):9-13.
[5] 胡见义，徐树宝，童晓光.渤海湾盆地复式油气聚集区(带)的形成和分布[J].石油勘探与开发，1986,13(1):1-8.
Hu Jianyi, Xu Shubao, Tong Xiaoguang. Formation and distribution of complex petroleum accumulation zones in Bohaiwan Basin[J]. Petroleum Exploration and Development, 1986, 13(1):1-8.
[6] 李德生.渤海湾盆地复合油气田的开发前景[J].石油学报，1986, 7(1):1-21.
Li Desheng. Prospect of the composite mega structural oil and gas field in Bohai Gulf of China[J]. Acta Petrolei Sinica, 1986, 7(1):1-21.
[7] 李丕龙，张善文，宋国奇，等.断陷盆地隐蔽油气藏形成机制：以渤海湾盆地济阳坳陷为例[J].石油实验地质，2004,26(1):3-10.
Li Pilong, Zhang Shanwen, Song Guoqi, et al. Forming mechanism of subtle oil pools in fault basins: taking the Jiyang Depression of the Bohaiwan Basin as an example[J]. Petroleum Geology and Experiment, 2004,26(1):3-10.
[8] 袁选俊，谯汉生.渤海湾盆地富油气凹陷隐蔽油气藏勘探[J].石油与天然气地质，2002,23(2):130-133.
Yuan Xuanjun, Qiao Hansheng. Exploration of subtle reservoir in prolific depression of Bohai Bay Basin[J]. Oil & Gas Geology, 2002,23(2):130-133.
[9] 赵文智，邹才能，汪泽成，等.富油气凹陷“满凹含油”论：内涵与意义[J].石油勘探与开发，2004,31(2):130-142.
Zhao Wenzhi, Zou Caineng, Wang Zecheng, et al. The intension and signification of“sag-wide oil-bearing theory”in the hydrocarbon-rich depression with terrestrial origin[J]. Petroleum Exploration and Development, 2004,31(2):130-142.
[10] 赵贤正，金凤鸣，王权，等.陆相断陷盆地洼槽聚油理论及其应用：以渤海湾盆地冀中坳陷和二连盆地为例[J].石油学报，2011,32(1): 18-24.
Zhao Xianzheng, Jin Fengming, Wang Quan, et al. Theory of hydrocarbon accumulation in troughs within continental faulted basins and its application: a case study in Jizhong Depression and Erlian Basin[J]. Acta Petrolei Sinica, 2011,32(1):18-24.
[11] 翟光明，王建君.论油气分布的有序性[J].石油学报，2000,21(1): 1-9.
Zhai Guangming, Wang Jianjun. The regularity of oil deposits’ distribution[J]. Acta Petrolei Sinica, 2000,21(1):1-9.
[12] 郭海洋，常智，赵容容，等.中国中西部前陆盆地含油气的有序性[J].沉积与特提斯地质，2008,28(1):65-69.
Guo Haiyang, Chang Zhi, Zhao Rongrong, et al. Regularity of the oil and gas accumulation in the foreland basins in western China[J]. Sedimentary Geology and Tethyan Geology, 2008,28(1):65-69.
[13] 张文昭.中国陆相盆地油气藏类型及复式油气聚集区油气藏序列[J].大庆石油地质与开发，1989,8(4):1-14.
Zhang Wenzhao. All types of hydrocarbon accumulations and their composite accumulated areas in the continental basins of China[J]. Petroleum Geology & Oilfield Development in Daqing, 1989,8(4):1-14.
[14] 张金川，金之钧，袁明生，等.油气成藏与分布的递变序列[J].现代地质，2003,17(3):323-330.
Zhang Jinchuan, Jin Zhijun, Yuan Mingsheng, et al. Mechanic spectrum for the migration and accumulation of hydrocarbons[J]. Geoscience, 2003,17(3):323-330.
[15] 张功成，金莉，兰蕾，等.“源热共控”中国油气田有序分布[J].天然气工业, 2014,34(5):1-28.
Zhang Gongcheng, Jin Li, Lan Lei, et al. Analysis of the regular distribution of oil and gas fields in China based on the theory of hydrocarbon generation controlled by source rocks and geothermal heat[J]. Natural Gas Industry, 2014,34(5):1-28.
[16] 宋国奇，郝雪峰，刘克奇.箕状断陷盆地形成机制、沉积体系与成藏规律：以济阳坳陷为例[J].石油与天然气地质，2014,35(3): 303-310.
Song Guoqi, Hao Xuefeng, Liu Keqi. Tectonic evolution, sedimentary system and petroleum distribution patterns in dustpan-shaped rift basin: a case study from Jiyang Depression, Bohai Bay Basin[J]. Oil & Gas Geology, 2014, 35(3):303-310.
[17] 聂海宽，张金川，薛会，等.油气成藏及分布序列的连续聚集和非连续聚集[J].天然气工业，2010,30(9):9-14.
Nie Haikuan, Zhang Jinchuan, Xue Hui, et al. Continuous and discontinuous accumulations in hydrocarbon pooling and distribution sequence[J]. Natural Gas Industry, 2010,30(9):9-14.
[18] 郝雪峰，尹丽娟，林璐.济阳坳陷油藏类型及属性分布有序性[J].油气地质与采收率，2016,23(1):8-13.
Hao Xuefeng, Yin Lijuan, Lin Lu. Ordered distribution of reservoir type and its attributes in Jiyang Depression[J]. Petroleum Geology and Recovery Efficiency, 2016,23(1):8-13.
[19] 孙永河，赵博，董月霞，等.南堡凹陷断裂对油气运聚成藏的控制作用[J].石油与天然气地质，2013,34(4):540-549.
Sun Yonghe, Zhao Bo, Dong Yuexia, et al. Control of faults on hydrocarbon migration and accumulation in the Nanpu Sag[J]. Oil & Gas Geology, 2013,34(4):540-549.
[20] 裴立新.南堡凹陷源—断—储耦合控藏模式研究[D].北京：中国石油大学(北京)，2018.
Pei Lixin. Petroleum origin and accumulation pattern dominated by source-fault-reservior in the Nanpu Sag, Bohai Bay Basin[D]. Beijing: China University of Petroleum (Beijing), 2018.
[21] 庞礴.南堡凹陷新近系相势源耦合控油气作用的研究与应用[D].北京：中国石油大学(北京)，2019.
Pang Bo. Research of hydrocarbon accumulation controlled by facies-potential-source coupling in Neogene phase sources in Nanpu Depression[D]. Beijing: China University of Petroleum (Beijing), 2019.
[22] 毛毳，张云峰，袁红旗，等.南堡凹陷及周边露头下古生界岩溶储集体特征及对比[J].中国石油大学学报(自然科学版)，2023,47(4): 24-34.
Mao Cui, Zhang Yunfeng, Yuan Hongqi, et al. Characteristics and comparison of karst reservoirs of lower Paleozoic in Nanpu Sag and outcrops[J]. Journal of China University of Petroleum(Edition of Natural Science), 2023,47(4):24-34.
[23] 王恩泽，刘国勇，庞雄奇，等.南堡凹陷中深层碎屑岩储集层成岩演化特征及成因机制[J].石油勘探与开发，2020,47(2):321-333.
Wang Enze, Liu Guoyong, Pang Xiongqi, et al. Diagenetic evolution and formation mechanisms of middle to deep clastic reservoirs in the Nanpu Sag, Bohai Bay Basin, east China[J]. Petroleum Exploration and Development, 2020,47(2):321-333.
[24] 杨佳奇，纪友亮，吴浩，等.南堡凹陷深层储层成岩作用与孔隙演化：以3号构造带古近系沙一段为例[J].沉积学报，2022,40(1):203-216.
Yang Jiaqi, Ji Youliang, Wu Hao, et al. Diagenesis and porosity evolution of deep reservoirs in the Nanpu Sag: a case study of Sha 1 member of the Paleogene in No. 3 structural belt [J]. Acta Sedimentologica Sinica, 2022, 40(1):203-216.
[25] Jiang Fujie, Pang Xiongqi, Li Longlong, et al. Petroleum resources in the Nanpu Sag, Bohai Bay Basin, eastern China[J]. AAPG Bulletin, 2018,102(7):1213-1237.
[26] Wang E Z, Liu G Y, Pang X Q, et al. Sedimentology, diagenetic evolution, and sweet spot prediction of tight sandstone reservoirs: a case study of the third member of the Upper Paleogene Shahejie Formation，Nanpu Sag，Bohai Bay Basin, China[J]. Journal of Petroleum Science and Engineering, 2020,186:106718.
[27] 王建伟，杜景霞，张永超，等.南堡凹陷石油地质条件、资源潜力及勘探方向[J].海相油气地质，2019,24(3):21-28.
Wang Jianwei, Du Jingxia, Zhang Yongchao, et al. The geological conditions, resource potential and exploration direction in Nanpu Sag of Jidong Depression, Bohai Bay Basin[J]. Marine Origin Petroleum Geology, 2019,24(3):21-28.
[28] 董月霞，杨赏，陈蕾，等.渤海湾盆地辫状河三角洲沉积与深部储集层特征：以南堡凹陷南部古近系沙一段为例[J].石油勘探与开发，2014,41(4):429-436.
Dong Yuexia, Yang Shang, Chen Lei, et al. Braided river delta deposition and deep reservoirs in the Bohai Bay Basin: a case study of the Paleogene Sha 1 member in the southern area of Nanpu Sag[J]. Petroleum Exploration and Development, 2014,41(4):429-436.
[29] 蒋有录，苏圣民，刘华，等.渤海湾盆地新生界沉积洼陷类型及其与油气富集的关系[J].石油学报，2019,40(6):635-645.
Jiang Youlu, Su Shengmin, Liu Hua, et al. Types of Cenozoic sedimentary subsags and their relationship with hydrocarbon enrichment in Bohai Bay Basin[J]. Acta Petrolei Sinica, 2019,40(6):635-645.