渤海海域沙西北地区潜山油源及成藏特征

doi:10.11743/ogg20180405

Abstract

Abstract: The study discussed the origin and accumulation characteristics of hydrocarbon in buried hills in Shaxibei area,Bohai Sea,through geological and geochemical research methods.Analysis of biomarker parameters reveals that the proved buried hill oil samples in Shaxibei area originate from the Shahejie Formation source rocks.Oil samples from the CFD2-1 buried hill carbonate reservoir have a high G/H index and relatively low 4MSI,and are characterized by depleted ¹³C for n-alkanes(less than -29‰ as a whole).Such characteristics may be an indicator of the oil origin from the Es¹ source rocks.Oil samples, taken from the granite reservoir of the CFD1-6 oil fields,are typified by relatively higher 4MSI (more than 0.4) and heavier carbon isotope of n-alkanes (more than -29‰), which may indicate that CFD1-6 buried hill oil is dominated by the Es³-derived oil. The CFD2-1 buried hill is overlain by the Es¹ formation unit,and the mature Es¹ source rock may supply adequate petroleum for charging the carbonate reservoirs without long migration distance.This accumulation model can be referred to as the assemblage of generation from the draped source rock and vertically charging to the underlying carbonate reservoir.CFD1-6 granite buried hill is covered by the Ed shale,being characterized by low organic matter abundance and thermal maturity,which can be served as a seal for oil accumulation.Oil generated from the source rock in the Qikou Sag can be transported through the laterally distributed sand body and charge the CFD1-6 buried hill traps,exemplifying a hydrocarbon accumulation model of migration through lateral sand body.On the basis of core observation and casting thin section experiments,we analyzed the textural characteristics of weathered crust from Well CFD2-1-2.The results show that the weathered crust structure in Shaxibei area may not be able to receive the laterally transporting petroleum from sags to buried hill traps,while the overlying effective source rocks on the surface of buried hills or the occurrence of sand bodies communicating source and reservoir are fundamental for hydrocarbon accumulation in buried hills.

Key words: oil kitchen, accumulation model, buried hill, Shaxibei area, Bohai Sea

CLC Number:

TE122.1

Wang Qi, Hao Fang, Xu Changgui, Wei Ajuan, Sun Zhongheng, Cao Yijun, Zou Huayao. Origin and accumulation characterization of petroleum in buried hill reservoirs in Shaxibei area,Bohai Sea[J]. Oil & Gas Geology, 2018, 39(4): 676-684.

References

[1] 邹华耀,周心怀,鲍晓欢,等.渤海海域古近系、新近系原油富集/贫化控制因素与成藏模式[J].石油学报,2010,31(6):885-893. Zou Huayao,Zhou Xinhuai,Bao Xiaohuan,et al.Controlling factors and models for hydrocarbon enrichment/depletion in Paleogene and Neogene,Bohai sea[J].Acta Petrolei Sinica,2010,31(6):885-893.
[2] 李素梅,董月霞,王政军,等.南堡凹陷潜山原油特征与成因探讨[J].沉积学报,2014,32(02):376-384. Li Sumei,Dong Yuexia,Wang Zhengjun,et al.Characteristics and formation mechanism of deep oils from Nanpu depression,Bohai Bay Basin[J].Acta Sedimentologica Sinica,2014,32(02):376-384.
[3] Hao Fang,Zhou Xinhuai,Zhu Yangming,et al.Lacustrine source rock deposition in response to co-evolution of environments and organisms controlled by tectonic subsidence and climate,Bohai Bay Basin,China[J].Organic Geochemistry,2011,42(4):323-339.
[4] 姜福杰,庞雄奇,姜振学,等.渤海海域沙三段烃源岩评价及排烃特征[J].石油学报,2010,31(6):906-912. Jiang Fujie,Pang Xiongqi,Jiang Zhenxue,et al.The quality evaluation and hydrocarbon-expulsion characters of source rocks in the 3rd member of Shahejie Formation in the Bohai sea[J].2010,31(6):906-912.
[5] 傅宁,邓运华,张功成,等.南海北部叠合断陷盆地海陆过渡相烃源岩及成藏贡献-以珠二坳陷白云凹陷为例[J].石油学报,2010,31(04):559-565. Fu Ning,Deng Yunhua,Zhang Gongcheng,et al.Transitional source rock and its contribution to hydrocarbon accumulation in superimpose rift-subsidence basin of northern South China Sea:Taking Baiyun Sag of ZhuⅡdepression as an example[J].Acta Petrolei Sinica,2010,31(04):559-565.
[6] 张立平,黄第藩,廖志勤.伽马蜡烷-水体分层的地球化学标志[J].沉积学报,1999,17(01):136-140. Zhang Liping,Huang Difan,Liao Zhiqin.Gammacerane-geochemical indicator of water Column stratification[J].Acta Sedimentologica Sinica,1999,17(01):136-140.
[7] Hao Fang,Zhou Xinhuai,Zhu Yangming,et al.Charging of oil fields surrounding the Shaleitian uplift from multiple source rock intervals and generative kitchens,Bohai Bay basin,China[J].Marine and Petroleum Geology,2010,27(9):1910-1926.
[8] 李素梅,郭栋.东营凹陷原油单体烃碳同位素特征及其在油源识别中的应用[J].现代地质,2010,24(02):252-258. Li Sumei,Guo Dong.Characteristics and application of compound specific isotope in oil-source identification for oils in Dongying depression,Bohai Bay Basin[J].Geosicence,2010,24(02):252-258.
[9] 张文正,裴戈,关德师,等.中国几个盆地原油轻烃单体和正构烷烃系列分子碳同位素研究[J].地质论评,1993,39(1):79-88. Zhang Wenzheng,Pei Ge,Guan Deshi,et al.The carbon isotopic composition of the light hydrocarbon monomer and normal alkane series molecules from crude oil of some petroliferous basins in China[J].Geological Review,1993,39(1):79-88.
[10] Li Sumei,Amrani Alon,Pang Xiongqi,et al.Origin and quantitative source assessment of deep oils in the Tazhong Uplift,Tarim Basin[J].Organic Geochemistry,2015,78:1-22.
[11] 李素梅,庞雄奇,万中华.南堡凹陷混源油分布与主力烃源岩识别[J].地球科学(中国地质大学学报),2011,36(06):1064-1072. Li Sumei,Pang Xiongqi,Wan Zhonghua.Mixed oil distribution and source rock discrimination of Nanpu depression,Bohaibay Basin[J].Earth Science-Journal of China University of Geosciences,2011,36(06):1064-1072.
[12] Wang Qi,Hao Fang,Xu Changgui,et al.Geochemical characterization of QHD29 oils on the eastern margin of Shijiutuo uplift,Bohai Sea,China:Insights from biomarker and stable carbon isotope analysis[J].Marine and Petroleum Geology,2015,64:266-275.
[13] 董月霞,赵宗举,曹中宏,等.南堡凹陷奥陶系碳酸盐岩岩溶残丘圈闭勘探潜力及意义[J].石油学报,2015,36(06):653-663. Dong Yuexia,Zhao Zongju,Cao Zhonghong,et al.Exploration potential and significance of Ordovician carbonate karst monadnock traps in Nanpu sag[J].Acta Petrolei Sinica,2015,36(06):653-663.
[14] 王拥军,张宝民,王政军,等.渤海湾盆地南堡凹陷奥陶系潜山油气地质特征与成藏主控因素[J].天然气地球科学,2012,23(01):51-59. Wang Yongjun,Zhang Baomin,Wang Zhengjun,et al.Geological characteristics of Ordovician butied hill and main factors of oil/gas accumulation in Nanpu sag,Bohai Bay Basin,China[J].Natural Gas Geoscience,2012,23(01):51-59.
[15] 刘畅,陈冬霞,董月霞,等.断层对南堡凹陷潜山油气藏的控制作用[J].石油与天然气地质学,2015,36(01):43-50. Liu Chang,Chen Dongxia,Dong Yuexia,et al.Control of faults on hydrocarbon accumulation of buried hill reservoirs in the Nanpu Sag,Bohai Bay Basin[J].Oil & Gas Geology,2015,36(01):43-50.
[16] Wang Qi,Zou Huayao,Hao Fang,et al.Modeling hydrocarbon generation from the Paleogene source rocks in Liaodong Bay,Bohai Sea:A study on gas potential of oil-prone source rocks[J].Organic Geochemistry,2014,76:204-219.
[17] 田金强.渤海湾地区大中型油气田成藏机理与模式[D].北京:中国石油大学(北京),2011 Tian Jinqiang.Mechanism and model of hydrocarbon accumulation of large and medium-sized oil and gas fields in Bohai Bay Area[D].Beijing:China University of Petroleum(Beijing),2011.
[18] Zuo Y H,Qiu N S,Zhang Y et al.Geothermal regime and hydrocarbon kitchen evolution of the offshore Bohai Bay Basin,North China[J].AAPG Bulletin,2011,95(5):749-769.

Origin and accumulation characterization of petroleum in buried hill reservoirs in Shaxibei area,Bohai Sea

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	Yong'an Xue, Qi Wang, Chengmin Niu, Quanyun Miao, Mengxing Liu, Jie Yin. Hydrocarbon charging and accumulation of BZ 19-6 gas condensate field in deep buried hills of Bozhong Depression, Bohai Sea [J]. Oil & Gas Geology, 2020, 41(5): 891-902.
[2]	Lixin Tian, Qingbin Wang, Xiaojian Liu, Yiwei Hao. Geological features and their participation in the formation of silicified clastic reservoirs in the Shahejie Formation of Laizhouwan Sag, Bohai Sea [J]. Oil & Gas Geology, 2020, 41(5): 1073-1082.
[3]	Yong'an Xue, Feilong Wang, Guomin Tang, Xinqi Li. Geological condition and exploration prospect of shale oil and gas in the Bohai Sea [J]. Oil & Gas Geology, 2020, 41(4): 696-709.
[4]	Liu Guoping, Dong Shaoqun, Li Hongnan, Peng Shimi, Guan Cong, Mao Zhe. Characteristics of natural fractures and their influencing factors in the paleo-buried-hill reservoirs of the Western Sag in the Liaohe Basin,China [J]. Oil & Gas Geology, 2020, 41(3): 525-533.
[5]	Changgui Xu, Xiaofeng Du, Xiaojian Liu, Wei Xu, Yiwei Hao. Formation mechanism of high-quality deep buried-hill reservoir of Archaean metamorphic rocks and its significance in petroleum exploration in Bohai Sea area [J]. Oil & Gas Geology, 2020, 41(2): 235-247, 294.
[6]	Lu Huan, Xu Changgui, Wang Qingbin, Du Xiaofeng, Liu Xiaojian. Genetic mechanism of carbonate cements and its impact on the Mesozoic clastic reservoir quality of the C12 and Q17 structures,Bohai Sea Area [J]. Oil & Gas Geology, 2019, 40(6): 1270-1280.
[7]	Peng Cuncang. A model of hydrocarbon migration and accumulation in non-hydrocarbon-generating subsag at basin margins and its exploration significance: A case study on Sanhecun subsag of Zhanhua Sag,Bohai Bay Basin [J]. Oil & Gas Geology, 2019, 40(5): 1031-1037.
[8]	Shi Wenlong, Niu Chengmin, Yang Bo, Wang Liliang, Deng Hui, Wang Hang, Zhang Delong. Mechanism of “strike-slip-extensional” composite faults-controlled hydrocarbon accumulation in the northeastern Laizhouwan Sag, and its enlightenment for exploration [J]. Oil & Gas Geology, 2019, 40(5): 1056-1064.
[9]	Tang Guomin, Wang Feilong, Wang Qingbin, Wan Lin, Yan Ge. Genesis and accumulation models of sulfur-rich heavy oil in Laizhou Bay Sag,Bohai Sea [J]. Oil & Gas Geology, 2019, 40(2): 284-293.
[10]	Xu Hong, Zhang Weiwei, Ji Zhaopeng, Wang Li, Wang Qing, Su Dapeng, Lei Baohua, Yang Yanqiu. Dynamic characteristics and model of hydrocarbon accumulation in the large Chunxiao oil and gas field in the East China Sea Shelf Basin [J]. Oil & Gas Geology, 2019, 40(1): 1-11.
[11]	Zhong Kai, Zhu Weilin, Xue Yong'an, Zhou Xinhuai, Xu Changgui, Niu Chengmin. Petroleum geologic conditions and distributional features of large- and medium-sized oil and gas fields in Bohai Sea Basin [J]. Oil & Gas Geology, 2019, 40(1): 92-100.
[12]	Zhu Yixiu, Wang Huan, Shan Junfeng, Yang Chengyu. Reservoir lithology and space characteristics of the Archaeozoic basement rock in Ciyutuo buried hill,Liaohe Depression [J]. Oil & Gas Geology, 2018, 39(6): 1225-1236.
[13]	Zan Nianmin, Wang Yanzhong, Cao Yingchang, Yuan Guanghui, Cheng Xin, Jiang Wei, Jia Guanghua, Song Mingshui. Characteristics and development patterns of reservoir space of the Lower Paleozoic buried hills in Dongying Sag,Bohai Bay Basin [J]. Oil & Gas Geology, 2018, 39(2): 355-365.
[14]	Liu Yubo, Huang Xiaobo, Xu Changgui, Li Qiang, Wu Kui, Yu Yixin, Zhang Rucai. Characteristics of S-shaped strike-slip transfer zones and quantitative analysis of their influence on hydrocarbon accumulation in Liaoxi structural belt, Bohai Sea [J]. Oil & Gas Geology, 2018, 39(1): 20-29.
[15]	Pang Xiaojun, Wang Qingbin, Dai Liming, Li Huan, Chen Jing. Paleogene fault activities and their control over sedimentation at southeastern margin of Qinnan Sag,northern Bohai Sea [J]. Oil & Gas Geology, 2017, 38(6): 1059-1067.