Discussion of Hydrocarbons Expulsion from Less Mature Source Rocks in the Niuzhuang South Slope of Dongyi Depression, Bohai Bay Basin

LI Su mei; PANG Xiong qi; JIN Zhi jun; MAXiao chang; JULi rong

Article Contents

Article Navigation > Acta Sedimentologica Sinica > 2004 > 22(1): 161-168

LI Su mei, PANG Xiong qi, JIN Zhi jun, MAXiao chang, JULi rong. Discussion of Hydrocarbons Expulsion from Less Mature Source Rocks in the Niuzhuang South Slope of Dongyi Depression, Bohai Bay Basin[J]. Acta Sedimentologica Sinica, 2004, 22(1): 161-168.

Citation:

Discussion of Hydrocarbons Expulsion from Less Mature Source Rocks in the Niuzhuang South Slope of Dongyi Depression, Bohai Bay Basin

1.
Key Laboratory for Hydrocarbon Accumulation,Ministry of Education P.R.China; Basin and ReservoirResearch Center,Petroleum University, Beijing 102249;
2.
Sinopec Petroleum Exploration and Exploitation Institute, Beijing 100083;
3.
Jianghan Petroleum Exploration Bureau, Qinhe Oil recovery Devision, Jingzhou Hubei 262714;
4.
Shengli Petroleum Exploration Bureau, Binnan Geological Institute,Dongying Shandong 256606

Received Date: 2003-06-02
Publish Date: 2004-03-10

Abstract

It was suggested that 2 600 m is the boundary of early and later stage of diagenesis in Niuzhuang South Slope, Dongyi Depression, Bohai Bay Basin according to porosity, illite/montmorillonite ratio and acoustic transit time, and no abnormal formation pressure was observed from Es4 intervals located in the Niuzhuang South Slope. It was proved that 2 700 m is oil generation threshold (Ro=0.5%) of normal oil window based on vitrinite reflectance and thermal evaluation of biomarkers as well as oil source rock correlation results previously. No solid proofs support the opinion that Es4 shales located in the Niuzhuang South Slope should be the main source rock of oil pools in Bamihe oilfield. It was assumed that less mature oils with small amount as suggested by our recent reinvestigation were expelled through faults, shale layer under formation pressure of overlying intervals periodically. Particularly, deeper fluid pressure was suggested to play active roles in hydrocarbons expulsion of shall intervals indirectly, which is created by large amount of generated and expelled hydrocarbons. Hydrocarbons generated by source rocks with wide range of thermal maturity were expelled by abnormal fluid pressure periodically and contemporaneously leading to mixing of the oils with different maturity during primary migration. Relative small amount of hydrocarbons generated and low efficiency of hydrocarbons expulsion are responsible for low immature petroleum resource of Bamihe oilfield.
- Niuzhunag Sag,
- immature source rock,
- episode hydrocarbon expelling,
- mixed phase primary migration,

References

[1]	庞雄奇, 陈章明, 陈发景.含油气盆地地史、热史、生留排烃史数值模拟研究与烃源岩定量评价.北京:地质出版社, 1993. 10～85[Pang X Q,Chen Z M,Chen F J.Digital modelling the sedimentary history,and thermal evolution,hydrocarbons generation,residence ad well as expulsion procedure,and quantitative evaluation of source rocks in oil and gas bearing basins.Beijing:Geological Publishing House,1993.10～85]
[2]	庞雄奇. 排烃门限控油气理论与应用.北京:石油工业出版社,1995. 15-133.[Pang X Q.Theory of expulsion threshold controlling oil distribution and its application.Beijing:Petroleum Industry Press,1995.15～133]
[3]	庞雄奇,Ian Lerche,王雅春,等. 煤系源岩排烃门限理论研究与应用. 北京:石油工业出版社, 2001.6～270[Pang X Q,Ian Lerche,Wang Y C,et al.Theoretical study and application of hydrocarbon expulsion threshold of coal measures.Beijing:Petroleum industry press(in Chinese),2001,6～270]
[4]	Pang Xiongqi, Li Maowen, Li Sumei, Jin Zhijun. Petroleum systems in the Bohai Bay Basin: Part 2. Geochemical evidence for significant contribution of mature source rocks to "immature oils" in the Bamianhe field. Organic Geochemistry.2003a. In press.
[5]	Pang Xiongqi,Li Maowen,Li Sumei, Jin Zhijun, Xu Zhonglong, Chen Anding. Origin of crude oils in the Jinhu Depression of North Jiangsu-South Yellow Sea Basin, eastern China. Organic Geochemistry, 2003b,34(4):553～573.
[6]	王文军, 宋宁,姜乃煌,等.未熟油与成熟油的混源实验、混源理论图版及其应用.石油勘探与开发, 1999,26(4): 34～37.[Wang W J,Song L,Jiang N H,et al. Mixing of immature and mature oils:laboratory results,calibration maps and potential application.Petroleum Exploration & Development,1999,26,34～37]
[7]	Ruble T E, Lewan M D, Philp R P. New insights on the Green River petroleum system in the Uinta basin from hydrous pyrolysis experiments. AAPG Bulletin,2001, 85(8):1333～1371
[8]	Hu J, Xu S, Tong X, Wu H. The Bohai Bay Basin. In: Zhu X, ed.Chinese Sedimentary Basins. Amsterdam: Elsevier, 1989. 89～105.
[9]	张林晔,张春荣. 低熟油生成机理及成油体系.北京:地质出版社,1999. 77～78, 16.[Zhang L Y,Zhang C R.Origins of Immature Oils and Related Petroleum Systems:Case Studies from the Southem Slope of Niuzuang Sag,Jiyang Depression.Beijing:Geological Publishing house,1999.77～78,16]
[10]	Li Sumei, Li Maowen, Pang Xiongqi, et al.Petroleum systems in the Bohai Bay Basin: Part 1. Distribution and organic geochemistry of petroleum source rocks in the Niuzhuang South Slope. Organic Geochemistry,2003, 34(3): 389～412.
[11]	庞雄庞,李素梅,黎茂稳,等.八面河地区 "未熟-低熟油"成因探讨.沉积学报, 2001,19(4):586～591[Pang X Q,li S M,li M W,et al.Origin of immature oils in Bamianhe oilfield.Acta Sedimentologica Sinica,2001,4:586～591]
[12]	Li Sumei.Distribution and significance of methyl steranes in Bohai Bay Basin, east China. Journal of China University of Geosciences,2002, 13(4):321～329.
[13]	庞雄奇,李素梅,黎茂稳,等.八面河油田油气运移成藏模式探讨.地球科学,2002,6:666～670[Pang X Q,li S M,li M W,et al.Discussion on petroleum migration in Bamianhe Oilfield of Dongying Depression.Eastern China.Earth Science-Journal of China University of Geosciences,2002,6:666～670]
[14]	王新洲,周迪贤,王学军.烃源岩中残留死油量与运移门限值的讨论.石油勘探与开发, 1995, 22: 17～24[Wang Xinzhou,Zhou Dixian,Wang Xuejun.A distribution of residual dead oil content in source rocks and its migration threshold.Petroleum Exploration and Development,1995,22:17～24]
[15]	邹华耀,陆建峰.断层一低熟油烃源岩排油的控制因素.江汉石油学院学报, 1998, 20(2): 33～27[Zhou Huayiao,Lu Jianfeng.Faults:A key factor for expelling low mature oil.Journal of Jianhan Petroleum Institute,1998,20(2):33～27]
[16]	李明诚.石油与天然气运移研究综述.石油勘探与开发,2000,27(4):3～10[Li Mingcheng.An overview of hydrocarbon migration research.Petroleum Exploration and Development,2000,27(4):3～10]
[17]	李素梅,庞雄奇,金之钧.八面河地区原油、烃源岩中甾类化合物的分布特征及其应用. 地球科学, 2002a,6:711-717[Li S M,Pang X Q,Jin Z J.Distribution and significance of steroids in Bamianhe oilfield,East China.Eastern China.Earth Science-Journal of China University of Geosciences,2002a,6,711～717]
[18]	李素梅,庞雄奇,金之钓,等.苏北金湖凹陷混合原油的地质地球化学特征.石油大学学报. 2002b,1:12～15[Li S M,Pang X Q,Jin Z J,et al.Geochemical characteristics of the mixed oil in Jinhu Sag of Subei Basin.Journal of the University of Petroleum,China,2002b,1:12～15]
[19]	李明诚.石油与天然气运移.北京:石油工业出版社, 1994. 12～90[Li M C.Oil and gas migration.Beijing:Petroleum Industry Press,1994.12～90]
[20]	高岗.低熟油排出临界饱和度与泥岩压实关系探讨.中国海上油气, 2000,14(4):266～269[Gao Gang.Correlation of critical expulsion saturation of immature oil with mudstone compaction.China Offshore Oil and Gas(Geology),2000,14(4):266～269]
[21]	童亨茂.地应力对排烃的影响方式及作用模型.石油实验地质, 2000,22(3):201～209[Tong Hengmo.The way and model of stress effect on hydrocarbon expulsion.Experimental Petroleum Geology,2000,22(3):201～209]
[22]	蒂索B.P,威尔特 D.H.石油形成和分布(第二版).徐永元译.北京:石油工业出版社,1989. 216～222[Tissot B P,Whelt D H.Formation and distribution of petroleum.Translated by Xu Yongyuan.Beijing:Petroleum Industry Press,1989.216～222]
[23]	Mann U, et al. Petroleum migration:mechanisms,pathways,efficiencies and numerical simulations. In: WelteD Hand Baker D R, eds. Petroleum and basin evolution. Berlin Heidelber:Springer-Verlag, 1997. 405～520.
[24]	罗晓容.油气初次运移的动力学背景与条件.石油学报, 2001, 22(6): 24-30.[Luo Xiaorong.Dynamic background and condition for oil primary migration.Acta Petrolei Sinica,2001,22(6):24～30]
[25]	Ungerer P,Burrus J,Doligez B, et al. Basin evaluation by integrated two-dimensional modelling of heat transfer fluid flow, hydrocarbon generation,and migration. AAPG,1990,74(3):309～335.
[26]	刘晓峰,解习农.东营凹陷流体压力系统研究.地球科学,2003, 28(1): 78～86[Liu Xiaofeng,Xie Xinong.Study on fluid pressure system in Dongying Depression.Earth Science-Journal of China University of Geosciences,2003,28(1):78～86]
[27]	刘晓峰.超压传递:概念和方式.石油实验地质, 2002, 24(6):533～536[Liu Xiaofeng.Over pressure transference:concept and ways.Petroleum Geology & Experiment,2002.24(6):533～536]
[28]	王新洲,周迪贤,王学军.流体间歇压力运移─石油初次运移的重要方式.石油勘探与开发,1994, 21(1):20～26[Wang Xinzhou,Zhou Dixian,Wang Xuejun.Intermittent fracturing migration of pore fluids-one of the major regime of primary migration of petroleum.Petroleum Exploration and Development,1994,21(1):20～26]
[29]	Hedberg H D. Methane generation and petroleum migration. AAPG Studies in Geology,1980, 10: 179～206.
[30]	张金功,王定一,邸世祥,等.异常超压带内开启泥岩裂隙的分布与油气初次运移.石油与天然气地质, 1996, 17(1): 27～31[Zhang Jingong,Wang Dingyi,Di Shixiang.Li Pilong.Distribution of open frractures in abnormal overpressure mudstone and primary migration of hydrocarbon.Oil & Gas geology,1996,17(1):27～31]
[31]	郝芳,董伟良.沉积盆地超压系统演化、流体活动与成藏机理.地球科学进展, 2001, 16(1): 79～85 [Hao Fang,Dong Weiliang.Evolution of fluid flow and petroleum accumulation in overpressured systems in sedimentary basins.Advance in Earth Sciences,2001,16(1):79～85]
[32]	Ozkaya I. Computer simulation of primary oil migration in Kuwait. Journal of Petroleum Geology,1991,14(1):37～48.
[33]	Price L C, Clayton J L. Extraction of whole versus ground source rock: fundamental petroleum geochemical implications, including oil-source rock correlation. Geochimica et Cosmochimica Acta,1992,56(1):1213～1222.
[34]	Hunt J M.Generation and migration of petroleum from abnormally pressured fluid compartments. AAPG Bulletin, 1990,74:1-12
[35]	Xie X N, Wang C, Li S T. Hydrofracturing and episodic compaction in low permeable muddy rocks of sedimentary basin. Chinese Science Bulletin, 1998, 42(9): 666-670.
[36]	周杰,庞雄奇.一种排烃量计算方法及其应用.石油勘探与开发, 2002, 29(1):24～27[Zhou Jie,Pang Xiongqi. A method for calculating the quantity of hydrocarbon generation and expulsion.Petroleum Exploration and Development,2002,29(1):24～27]

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Discussion of Hydrocarbons Expulsion from Less Mature Source Rocks in the Niuzhuang South Slope of Dongyi Depression, Bohai Bay Basin

1. Key Laboratory for Hydrocarbon Accumulation,Ministry of Education P.R.China; Basin and ReservoirResearch Center,Petroleum University, Beijing 102249;

2. Sinopec Petroleum Exploration and Exploitation Institute, Beijing 100083;

3. Jianghan Petroleum Exploration Bureau, Qinhe Oil recovery Devision, Jingzhou Hubei 262714;

4. Shengli Petroleum Exploration Bureau, Binnan Geological Institute,Dongying Shandong 256606

Received Date: 2003-06-02

Publish Date: 2004-03-10

Key words:

Abstract: It was suggested that 2 600 m is the boundary of early and later stage of diagenesis in Niuzhuang South Slope, Dongyi Depression, Bohai Bay Basin according to porosity, illite/montmorillonite ratio and acoustic transit time, and no abnormal formation pressure was observed from Es4 intervals located in the Niuzhuang South Slope. It was proved that 2 700 m is oil generation threshold (Ro=0.5%) of normal oil window based on vitrinite reflectance and thermal evaluation of biomarkers as well as oil source rock correlation results previously. No solid proofs support the opinion that Es4 shales located in the Niuzhuang South Slope should be the main source rock of oil pools in Bamihe oilfield. It was assumed that less mature oils with small amount as suggested by our recent reinvestigation were expelled through faults, shale layer under formation pressure of overlying intervals periodically. Particularly, deeper fluid pressure was suggested to play active roles in hydrocarbons expulsion of shall intervals indirectly, which is created by large amount of generated and expelled hydrocarbons. Hydrocarbons generated by source rocks with wide range of thermal maturity were expelled by abnormal fluid pressure periodically and contemporaneously leading to mixing of the oils with different maturity during primary migration. Relative small amount of hydrocarbons generated and low efficiency of hydrocarbons expulsion are responsible for low immature petroleum resource of Bamihe oilfield.

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Reference (36)

[1]	庞雄奇, 陈章明, 陈发景.含油气盆地地史、热史、生留排烃史数值模拟研究与烃源岩定量评价.北京:地质出版社, 1993. 10～85[Pang X Q,Chen Z M,Chen F J.Digital modelling the sedimentary history,and thermal evolution,hydrocarbons generation,residence ad well as expulsion procedure,and quantitative evaluation of source rocks in oil and gas bearing basins.Beijing:Geological Publishing House,1993.10～85]
[2]	庞雄奇. 排烃门限控油气理论与应用.北京:石油工业出版社,1995. 15-133.[Pang X Q.Theory of expulsion threshold controlling oil distribution and its application.Beijing:Petroleum Industry Press,1995.15～133]
[3]	庞雄奇,Ian Lerche,王雅春,等. 煤系源岩排烃门限理论研究与应用. 北京:石油工业出版社, 2001.6～270[Pang X Q,Ian Lerche,Wang Y C,et al.Theoretical study and application of hydrocarbon expulsion threshold of coal measures.Beijing:Petroleum industry press(in Chinese),2001,6～270]
[4]	Pang Xiongqi, Li Maowen, Li Sumei, Jin Zhijun. Petroleum systems in the Bohai Bay Basin: Part 2. Geochemical evidence for significant contribution of mature source rocks to "immature oils" in the Bamianhe field. Organic Geochemistry.2003a. In press.
[5]	Pang Xiongqi,Li Maowen,Li Sumei, Jin Zhijun, Xu Zhonglong, Chen Anding. Origin of crude oils in the Jinhu Depression of North Jiangsu-South Yellow Sea Basin, eastern China. Organic Geochemistry, 2003b,34(4):553～573.
[6]	王文军, 宋宁,姜乃煌,等.未熟油与成熟油的混源实验、混源理论图版及其应用.石油勘探与开发, 1999,26(4): 34～37.[Wang W J,Song L,Jiang N H,et al. Mixing of immature and mature oils:laboratory results,calibration maps and potential application.Petroleum Exploration & Development,1999,26,34～37]
[7]	Ruble T E, Lewan M D, Philp R P. New insights on the Green River petroleum system in the Uinta basin from hydrous pyrolysis experiments. AAPG Bulletin,2001, 85(8):1333～1371
[8]	Hu J, Xu S, Tong X, Wu H. The Bohai Bay Basin. In: Zhu X, ed.Chinese Sedimentary Basins. Amsterdam: Elsevier, 1989. 89～105.
[9]	张林晔,张春荣. 低熟油生成机理及成油体系.北京:地质出版社,1999. 77～78, 16.[Zhang L Y,Zhang C R.Origins of Immature Oils and Related Petroleum Systems:Case Studies from the Southem Slope of Niuzuang Sag,Jiyang Depression.Beijing:Geological Publishing house,1999.77～78,16]
[10]	Li Sumei, Li Maowen, Pang Xiongqi, et al.Petroleum systems in the Bohai Bay Basin: Part 1. Distribution and organic geochemistry of petroleum source rocks in the Niuzhuang South Slope. Organic Geochemistry,2003, 34(3): 389～412.
[11]	庞雄庞,李素梅,黎茂稳,等.八面河地区 "未熟-低熟油"成因探讨.沉积学报, 2001,19(4):586～591[Pang X Q,li S M,li M W,et al.Origin of immature oils in Bamianhe oilfield.Acta Sedimentologica Sinica,2001,4:586～591]
[12]	Li Sumei.Distribution and significance of methyl steranes in Bohai Bay Basin, east China. Journal of China University of Geosciences,2002, 13(4):321～329.
[13]	庞雄奇,李素梅,黎茂稳,等.八面河油田油气运移成藏模式探讨.地球科学,2002,6:666～670[Pang X Q,li S M,li M W,et al.Discussion on petroleum migration in Bamianhe Oilfield of Dongying Depression.Eastern China.Earth Science-Journal of China University of Geosciences,2002,6:666～670]
[14]	王新洲,周迪贤,王学军.烃源岩中残留死油量与运移门限值的讨论.石油勘探与开发, 1995, 22: 17～24[Wang Xinzhou,Zhou Dixian,Wang Xuejun.A distribution of residual dead oil content in source rocks and its migration threshold.Petroleum Exploration and Development,1995,22:17～24]
[15]	邹华耀,陆建峰.断层一低熟油烃源岩排油的控制因素.江汉石油学院学报, 1998, 20(2): 33～27[Zhou Huayiao,Lu Jianfeng.Faults:A key factor for expelling low mature oil.Journal of Jianhan Petroleum Institute,1998,20(2):33～27]
[16]	李明诚.石油与天然气运移研究综述.石油勘探与开发,2000,27(4):3～10[Li Mingcheng.An overview of hydrocarbon migration research.Petroleum Exploration and Development,2000,27(4):3～10]
[17]	李素梅,庞雄奇,金之钧.八面河地区原油、烃源岩中甾类化合物的分布特征及其应用. 地球科学, 2002a,6:711-717[Li S M,Pang X Q,Jin Z J.Distribution and significance of steroids in Bamianhe oilfield,East China.Eastern China.Earth Science-Journal of China University of Geosciences,2002a,6,711～717]
[18]	李素梅,庞雄奇,金之钓,等.苏北金湖凹陷混合原油的地质地球化学特征.石油大学学报. 2002b,1:12～15[Li S M,Pang X Q,Jin Z J,et al.Geochemical characteristics of the mixed oil in Jinhu Sag of Subei Basin.Journal of the University of Petroleum,China,2002b,1:12～15]
[19]	李明诚.石油与天然气运移.北京:石油工业出版社, 1994. 12～90[Li M C.Oil and gas migration.Beijing:Petroleum Industry Press,1994.12～90]
[20]	高岗.低熟油排出临界饱和度与泥岩压实关系探讨.中国海上油气, 2000,14(4):266～269[Gao Gang.Correlation of critical expulsion saturation of immature oil with mudstone compaction.China Offshore Oil and Gas(Geology),2000,14(4):266～269]
[21]	童亨茂.地应力对排烃的影响方式及作用模型.石油实验地质, 2000,22(3):201～209[Tong Hengmo.The way and model of stress effect on hydrocarbon expulsion.Experimental Petroleum Geology,2000,22(3):201～209]
[22]	蒂索B.P,威尔特 D.H.石油形成和分布(第二版).徐永元译.北京:石油工业出版社,1989. 216～222[Tissot B P,Whelt D H.Formation and distribution of petroleum.Translated by Xu Yongyuan.Beijing:Petroleum Industry Press,1989.216～222]
[23]	Mann U, et al. Petroleum migration:mechanisms,pathways,efficiencies and numerical simulations. In: WelteD Hand Baker D R, eds. Petroleum and basin evolution. Berlin Heidelber:Springer-Verlag, 1997. 405～520.
[24]	罗晓容.油气初次运移的动力学背景与条件.石油学报, 2001, 22(6): 24-30.[Luo Xiaorong.Dynamic background and condition for oil primary migration.Acta Petrolei Sinica,2001,22(6):24～30]
[25]	Ungerer P,Burrus J,Doligez B, et al. Basin evaluation by integrated two-dimensional modelling of heat transfer fluid flow, hydrocarbon generation,and migration. AAPG,1990,74(3):309～335.
[26]	刘晓峰,解习农.东营凹陷流体压力系统研究.地球科学,2003, 28(1): 78～86[Liu Xiaofeng,Xie Xinong.Study on fluid pressure system in Dongying Depression.Earth Science-Journal of China University of Geosciences,2003,28(1):78～86]
[27]	刘晓峰.超压传递:概念和方式.石油实验地质, 2002, 24(6):533～536[Liu Xiaofeng.Over pressure transference:concept and ways.Petroleum Geology & Experiment,2002.24(6):533～536]
[28]	王新洲,周迪贤,王学军.流体间歇压力运移─石油初次运移的重要方式.石油勘探与开发,1994, 21(1):20～26[Wang Xinzhou,Zhou Dixian,Wang Xuejun.Intermittent fracturing migration of pore fluids-one of the major regime of primary migration of petroleum.Petroleum Exploration and Development,1994,21(1):20～26]
[29]	Hedberg H D. Methane generation and petroleum migration. AAPG Studies in Geology,1980, 10: 179～206.
[30]	张金功,王定一,邸世祥,等.异常超压带内开启泥岩裂隙的分布与油气初次运移.石油与天然气地质, 1996, 17(1): 27～31[Zhang Jingong,Wang Dingyi,Di Shixiang.Li Pilong.Distribution of open frractures in abnormal overpressure mudstone and primary migration of hydrocarbon.Oil & Gas geology,1996,17(1):27～31]
[31]	郝芳,董伟良.沉积盆地超压系统演化、流体活动与成藏机理.地球科学进展, 2001, 16(1): 79～85 [Hao Fang,Dong Weiliang.Evolution of fluid flow and petroleum accumulation in overpressured systems in sedimentary basins.Advance in Earth Sciences,2001,16(1):79～85]
[32]	Ozkaya I. Computer simulation of primary oil migration in Kuwait. Journal of Petroleum Geology,1991,14(1):37～48.
[33]	Price L C, Clayton J L. Extraction of whole versus ground source rock: fundamental petroleum geochemical implications, including oil-source rock correlation. Geochimica et Cosmochimica Acta,1992,56(1):1213～1222.
[34]	Hunt J M.Generation and migration of petroleum from abnormally pressured fluid compartments. AAPG Bulletin, 1990,74:1-12
[35]	Xie X N, Wang C, Li S T. Hydrofracturing and episodic compaction in low permeable muddy rocks of sedimentary basin. Chinese Science Bulletin, 1998, 42(9): 666-670.
[36]	周杰,庞雄奇.一种排烃量计算方法及其应用.石油勘探与开发, 2002, 29(1):24～27[Zhou Jie,Pang Xiongqi. A method for calculating the quantity of hydrocarbon generation and expulsion.Petroleum Exploration and Development,2002,29(1):24～27]

Discussion of Hydrocarbons Expulsion from Less Mature Source Rocks in the Niuzhuang South Slope of Dongyi Depression, Bohai Bay Basin

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