渤海海域天然气保存条件与分布特征

滕长宇，邹华耀，郝芳，王应斌，王奇

doi:10.11764/j.issn.1672-1926.2015.01.0071

天然气地球科学 >

2015 , Vol. 26 >Issue 1: 71 - 80

DOI: https://doi.org/10.11764/j.issn.1672-1926.2015.01.0071

天然气地质学

渤海海域天然气保存条件与分布特征

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1.中国石油大学(北京)油气资源与探测国家重点实验室，北京 102249；2.中国地质大学(武汉)构造与油气资源教育部重点实验室，湖北武汉 430074；
3.中海石油有限公司天津分公司，天津 300452

滕长宇（1985-），男，辽宁大连人，博士研究生，主要从事石油与天然成藏机理研究. E-mail：tengchangyu999@163.com.

收稿日期: 2014-02-19

修回日期: 2014-07-15

网络出版日期: 2015-01-10

基金资助

国家自然科学基金(编号:41271265)|国家科技重大专项(编号:2011ZX05023-006-07)联合资助.

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Preservation Condition and Occurrence of the Gas Pools in the Bohai Bay Area

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1.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China;2.Key Laboratory of Tectonics and Petroleum Resources,Ministry of Education,China University of Geosciences,Wuhan 430074,China;3.Tianjin Branch of CNOOC Limited,Tianjin 300452,China

Received date: 2014-02-19

Revised date: 2014-07-15

Online published: 2015-01-10

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摘要

渤海海域已发现了一系列的大中型油田，然而天然气的发现率较低。该区发育多套成熟烃源岩，具备形成大中型气田的气源条件，保存条件是该区天然气富集成藏的关键。该区天然气的保存主要受2个因素控制：①新构造运动期断层活动强度与盖层中断裂的发育密度|②盖层的厚度和盖储(排替+剩余)压力差。辽东湾地区新构造运动期断层发育密度小，活动强度弱，油气主要在古近系运聚成藏，又由于古近系气藏的盖储压力差较大、盖层封闭能力强，有利于天然气的保存，目前渤海海域储量最大的2个气田都分布于该区。渤中地区,通源断层活动强烈，大量的油气运移至新近系，使得现今新近系聚集了丰富的原油，但是由于新近系盖层中断层发育密集、盖储压力差小，封闭能力弱，天然气容易发生散失而难以形成商业聚集|然而古近系气藏盖储压力差较大，盖层封闭能力强，有利于天然气保存，目前在该区已发现6个储量数十亿方的天然气田。

关键词： 保存条件; 盖层; 新构造运动; 天然气; 渤海海域

本文引用格式

滕长宇，邹华耀，郝芳，王应斌，王奇 . 渤海海域天然气保存条件与分布特征[J]. 天然气地球科学, 2015 , 26(1) : 71 -80 . DOI: 10.11764/j.issn.1672-1926.2015.01.0071

Abstract

A series of big-medium sized oil fields have been found in the Bohai Bay area,but the proved reserve of gas is very small.It developed multiple sets of mature source rocks,which are abundant enough for the formation of big-medium sized gas fields,thus preservation condition is a vital factor in the gas accumulation.Whether the gas could be preserved or not depends mainly on two key elements.They are(1)faulting intensity during the Neotectonism and density of the secondary faults in cap-rocks;(2)thickness of the cap-rocks and drops of the displacement pressures and overpressures between cap-rocks and reservoirs(DPCR).In the Liaodong Bay province,density and activity intensity of the faults developed during the Neotectonism are very little and DPCRs of the Paleogene reservoirs are very high,so the gas pools are well preserved in the Paleogene.Today,the two biggest gas fields in the Bohai Bay area just occur in the Liaodong Bay province.In contrast,in the Bozhong province,plenty of petroleum has migrated into the Neogene reservoirs through the intense activity faults.However,because of poor sealing property of the Neogene cap-rocks,most of the gas pools have suffered damage,whereas some of the pools in the Paleogene are preserved owing to the excellent Paleogene cap-rocks.So far,6 gas fields with reserves about several billion cubic meters have been found in the Paleogene of the Bozhong province.

Key words： Preserved condition; Cap-rock; Neotectonism; Gas; Bohai Bay area

参考文献

［1］Gong Zaisheng,Wang Guochun.Neotectonism and late hydrocarbon accumulation in Bohai Sea[J].Acta Petrolei Sinica,2001,22(2):1-7.［龚再升,王国纯.渤海新构造运动控制晚期油气成藏[J].石油学报,2001,22(2):1-7.］
［2］Zou Huayao,Gong Zaisheng,Teng Changyu,et al.Late-stage rapid accumulation of the PL19-3 giant oilfield in an active fault zone during Neotectonism in the Bozhong Depression,Bohai Bay[J].Science China:Earth Sciences,2011,54(3):388-398.［邹华耀,龚再升,滕长宇,等.渤中坳陷新构造运动断裂活动带PL19-3大型油田晚期快速成藏[J].中国科学:地球科学,2011,41(4):482-492.］
［3］Wan Guimei,Tang Liangjie,Zhou Xinhuai,et al.Neogene-Quaternary fault characteristics and its formation mechanism in Bohai Sea[J].Acta Petrolei Sinica,2010,31(4):591-595.［万桂梅,汤良杰,周心怀,等.渤海海域新近纪—第四纪断裂特征及形成机制[J].石油学报,2010,31(4):591-595.］
［4］Zhou Xinhuai,Niu Chengmin,Teng Changyu.Relationship between faulting and hydrocarbon pooling during the Neotectonic movement around the central Bohai Bay[J].Oil & Gas Geology,2009,30(4):469-475.［周心怀,牛成民,滕长宇.环渤中地区新构造运动期断裂活动与油气成藏关系[J].石油与天然气地质,2009,30(4):469-475.］
［5］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.［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.］
［6］Teng Changyu,Zou Huayao,Hao Fang.Control of differential tectonic evolution on petroleum occurrence in Bohai Bay Basin[J].Sience China:Earth Sciences,2014,57(5):1117-1128.［滕长宇,邹华耀,郝芳.渤海湾盆地构造差异演化与油气差异富集[J].中国科学:地球科学,2014,44(4):579-590.］
［7］Li Sanzhong,Suo Yanhui,Dai Liming,et al.Development of the Bohai Bay Basin and destruction of the North China Craton[J].Earth Science Frontiers,2010,17(4):64-89.［李三忠,索艳慧,戴黎明,等.渤海湾盆地形成与华北克拉通破坏[J].地学前缘,2010,17(4):64-89.］
［8］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,2011,42:323-339.
［9］Yu Yixin,Zhou Xinhuai,Xu Changgui,et al.Characteristics and formation mechanisms of the Cenozoic faults in the Bohai Sea waters[J].Oil & Gas Geology,2011,32(2):273-279.［余一欣,周心怀,徐长贵,等.渤海海域新生代断裂发育特征及形成机制[J].石油与天然气地质,2011,32(2):273-279.］
［10］Deng Yunhua,Xu Changgui,Li Jianping.Discussion on the forming conditions of Bohai Oilfield[J].Engineering Sciences,2011,13(5):10-15.［邓运华,徐长贵,李建平.渤海大油田形成条件探讨[J].中国工程科学,2011,13(5):10-15.］
［11］Zuo Yinhui,Qiu Nansheng,Zhang Yuan,et al.Geothermal regime and hydrocarbon kitchen evolution of the offshore Bohai Bay Basin,north China[J].AAPG Bulletin,2011,95(5):749-769.
［12］Zuo Yinhui,Qiu Nansheng,Li Jianping,et al.Matured evolution modeling for the Paleogene source rocks of the Bohai Basin[C].5^th International Symposium on Hydrocarbon Accumulation Mechanisms and Petroleum Resource Evaluation,Beijing:Petroleum Industry Press,2010:601-610.［左银辉,邱楠生,李建平,等.渤海盆地辽东湾地区古近系烃源岩成熟演化模拟[C].第五届油气成藏机理与油气资源评价国际学术研讨会论文集.北京:石油工业出版社,2010:601-610.］
［13］Hooper E C D.Fluid migration along growth faults in compacting sediments[J].Journal of Petroleum Geology,1991,14(2):161-180.
［14］Czauner B,Mádl-Sznyi J.The function of faults in hydraulic hydrocarbon entrapment:Theoretical considerations and a field study from the Trans-Tisza region,Hungary[J].AAPG Bulletin,2011,95(5):795-811.
［15］Sun Yumei,Li Youchuan,Gong Zaisheng,et al.Fluid inclusion evidence for late- stage petroleum accumulation,Bozhong Depresion,Bohai Gulf Basin[J].Bulletin of Mineralogy,Petrology and Geochemistry,2009,28(1):24-33.［孙玉梅,李友川,龚再升,等.渤海湾盆地渤中坳陷油气晚期成藏的流体包裹体证据[J].矿物岩石地球化学通报,2009,28(1):24-33.］［16］Xue Yongan,Liu Tinghai,Wang Yingbin,et al.Main controlling factors and mode of natural gas accumulation in Bohai Bay area[J].Petroleum Exploration and Development,2007,34(5):521-528.［薛永安,刘廷海,王应斌,等.渤海海域天然气成藏主控因素与成藏模式[J].石油勘探与开发,2007,34(5):521-528.］
［17］Wang Genzhao,Xia Qinglong.Natural gas distribution,main controls over accumulation and exploration targets in Bohai Sea[J].China Offshore Oil and Gas,2009,21(1):15-18.［王根照,夏庆龙.渤海海域天然气分布特点、成藏主控因素与勘探方向[J].中国海上油气,2009,21(1):15-18.］
［18］Gong Deyu,Xu Guosheng,Zhou Donghong,et al.Distribution characteristics and main controlling factors of natural gases in Liaodong Bay,east China[J].Natural Gas Geoscience,[JP3]2013,24(2):388-397.［龚德瑜,徐国盛,周东红,等.辽东湾海域天然气分布特点及其控制因素[J].天然气地球科学,2013,24(2):388-397.］
［19］Schlmer S,Krooss B M.Experimental characterisation of the hydrocarbon sealing efficiency of cap rocks[J].Marine and Perroleum Geology,1997,14(5):565-580.
［20］Lv Yanfang,Chen Zhangming,Wan Longgui.An estimation of the displacement pressure of the cap rocks by means of acoustic internal transit time[J].Petroleum Exploration and Development,1994,21(2):43-47.［吕延防,陈章明,万龙贵.利用声波时差计算盖岩排替压力[J].石油勘探与开发,1994,21(2):43-47.］
［21］Fu Guang,Pang Xiongqi,Jiang Zhenxue.Method for researching on mud-caprock sealing ability with the use of interval transit times[J].Oil Geophysical Prospecting,1996,31(4):521-528.［付广,庞雄奇,姜振学.利用声波时差资料研究泥岩盖层封闭能力的方法[J].石油地球物理勘探,1996,31(4):521-528.］
［22］Lv Yanfang,Fu Guang,Zhang Faqiang,et al.Quantitative study on sealing ability of ultra-pressure caprock[J].Acta Sedimentologica Sinica,2000,18(3):465-468.［吕延防,付广,张发强,等.超压盖层封烃能力的定量研究[J].沉积学报,2000,18(3):465-468.］
［23］Magara K.Compaction and migration of fluids in Miocene mudstone,Nagaoka plain,Japan[J].AAPG Bulletin,1968,52(12):2466-2501.
［24］Smith D A.Theoretical consideration of sealing and nonsealing faults[J].AAPG Bulletin,1966,50(2):363-374.
［25］Fu Guang,Xu Fengming.Quantitative research on controlling of thickness to seal abilities of caprock[J].Natural Gas Geoscience,2003,14(3):186-190.［付广,许凤鸣.盖层厚度对封闭能力控制作用分析[J].天然气地球科学,2003,14(3):186-190.］
［26］Hu Guoyi,Wang Xiaobo,Wang Yifeng,et al.Cap rock characteristics of medium and large gas fields in China[J].Natural Gas Geoscience,2009,20(2):162-166.［胡国艺,汪晓波,王义凤,等.中国大中型气田盖层特征[J].天然气地球科学,2009,20(2):162-166.］
［27］Zhu Weilin,Ge Jiandang.Gas exploration potential in offshore Bohai Bay Basin[J].Acta Petrolei Sinica,2001,22(2):8-13.［朱伟林,葛建党.渤海海域天然气勘探前景分析[J].石油学报,2001,22(2):8-13.］

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