天然气地球科学

• 天然气地球化学 • 上一篇    下一篇

四川盆地安岳气田龙王庙组气藏天然气有水溶气贡献的迹象

周国晓1,秦胜飞2,侯矅华2,吕芳2   

  1. 1.中国矿业大学(北京)地球科学与测绘工程学院,北京 100083;
    2.中国石油勘探开发研究院,北京 100083
  • 收稿日期:2016-04-19 修回日期:2016-09-25 出版日期:2016-12-10 发布日期:2016-12-10
  • 通讯作者: 秦胜飞(1969-)男,安徽五河人,高级工程师,博士,主要从事油气天然气地质与地球化学和油气成藏研究. E-mail:qsf@petrochina.com.cn.
  • 作者简介:周国晓(1991-),男,山西运城人,硕士研究生,主要从事天然气地质与地球化学研究. E-mail:zhouguoxiaogeology@163.com.
  • 基金资助:
    国家自然科学基金项目(编号:41372150);中国石油勘探开发研究院科技创新项目(编号:2012Y-001)联合资助.

The evidence of water soluble gas contribution to gas reservoir ofLongwangmiao Formation in Anyue Gasfield,Sichuan Basin

Zhou Guo-xiao1,Qin Sheng-fei2,Hou Yao-hua2,Lü Fang2   

  1. 1.China University of Mining & Technology,Beijing College of Geoscience and Surveying Engineering,
    Beijing 100083,China;2.Research Institute of Petroleum Exploration & Development,Beijing 100083,China
  • Received:2016-04-19 Revised:2016-09-25 Online:2016-12-10 Published:2016-12-10

摘要: 通过有机地球化学手段对四川盆地安岳大气田龙王庙组天然气和储层沥青进行了系统研究,发现天然气甲烷碳同位素较储层沥青明显偏重。这用目前大家普遍认为的油裂解气的观点难以解释,因根据歧化反应碳同位素分馏原理,油裂解生成的甲烷和沥青,甲烷碳同位素会明显轻于沥青。另外,甲烷碳同位素值与H2S含量也没有明显的相关性,用TSR作用也很难解释气藏中甲烷碳同位素偏重的现象。从气田水中释放出的水溶气甲烷碳同位素较气藏游离天然气的甲烷碳同位素偏重或者重,推断可能是由于地层水水溶相天然气的脱溶,造成龙王庙组气藏中的天然气甲烷碳同位素较储层沥青碳同位素偏重。同时,经激光拉曼测试分析发现大部分烃类包裹体具有液相甲烷特征峰,进一步证实水溶相天然气的存在。通过对气源、地层水、温压环境、构造演化、盖层等地质条件进行分析,提出龙王庙组气藏具有良好的水溶气形成、保存以及晚期随构造抬升水溶气脱气成藏的条件。对比龙王庙组埋深最大时与现今气藏条件下甲烷在地层水中的溶解度,估算出龙王庙组1m3的地层水可释放出6m3的天然气。

关键词: 四川盆地, 安岳气田, 龙王庙组气藏, 水溶气, 成藏

Abstract: Natural gas and reservoir solid bitumen of Lower Cambrian Longwangmiao Formation in Anyue Gasfield have been systematically analyzed using organic geochemical methods.It is found that the methane carbon isotope value is less negative than that of reservoir bitumen.It is difficult to explain this kind of phenomenon using the generally accepted idea that the gas is from oil cracking.According to the principle of the disproportionation reaction of carbon isotopic fractionation,if both methane and bitumen are from crude oil cracking,the carbon isotope of oil cracked methane should be significantly more negative than that of bitumen.In addition,the δ13C1 and the content of H2S have no obvious correlation,so it is impossible to think that the less negative value of δ13C1 is caused by thermochemical sulfate reduction.The carbon isotope of methane released from the gas field water is heavier than that of free gas reservoir.Water soluble gas adds to gas reservoir resulting in the carbon isotope value of methane carbon isotope bigger than that of reservoir bitumen from Longwangmiao Formation.At the same time,the majority of hydrocarbon inclusions with liquid phase methane characteristic peak are found by laser Raman measurement,which further confirms the existence of water soluble gas.Through the analysis of the geological conditions including the gas source,formation water,temperature and pressure environment,tectonic evolution and cover,the Longwangmiao Formation gas reservoir has good conditions of water soluble gas formation,preservation as well as degassing accumulation with the late tectonic uplift.Comparison of formation water solubility under the condition of Longwangmiao Formation deepest burial and present condition,estimating  that 1m3 formation water of Longwangmiao Formation can release 6m3 natural gas.

Key words: Sichuan Basin, Anyue Gasfield, Longwangmiao Formation gas pool, Water-soluble gas, Accumulation

中图分类号: 

  • TE122.2+3

[1]Zou Caineng,Du Jinhu,Xu Chunchun,et al.Formation,distribution,resource potential and discovery of the Sinian-Cambrian giant gasfield,Sichuan Basin,SW China[J].Petroleum Exploration and Development,2014,41(3):278-293.[邹才能,杜金虎,徐春春,等.四川盆地震旦系—寒武系特大型气田形成分布、资源潜力及勘探发现[J].石油勘探与开发,2014,41(3):278-293.]
[2]Du Jinhu,Zou Caineng,Xu Chunchun,et al.Theoretical and technical innovation in strategic discovery of a giant gas field in Cambrian Longwangmiao Formation of central Sichuan paleo-uplift,Sichuan Basin[J].Petroleum Exploration and Development,2014,41(3):268-277.[杜金虎,邹才能,徐春春,等.川中古隆起龙王庙组特大型气田战略发现与理论技术创新[J].石油勘探与开发,2014,41(3):268-277.]
[3]Wei Guoqi,Du Jinhu,Xu Chunchun,et al.Characteristics and accumulation modes of large gas reservoirs in Sinian-Cambrian of Gaoshiti-Moxi region,Sichuan Basin[J].Acta Petrolei Sinica,2015,36(1):1-12.[魏国齐,杜金虎,徐春春,等.四川盆地高石梯—磨溪地区震旦系—寒武系大型气藏特征与聚集模式[J].石油学报,2015,36(1):1-12.]
[4]Zhou Qin,Tian Hui,Wang Yanfei,et al.The generation and evolution characteristics of the Lower Cambrian shale in the central Sichuan Paleo-uplift[J].Natural Gas Geoscience,2015,26(10):1883-1892.[周秦,田辉,王艳飞,等.川中古隆起下寒武统烃源岩生烃演化特征[J].天然气地球科学,2015,26(10):1883-1892.]
[5]Wei Guoqi,Xie Zengye,Song Jiarong,et al.Features and origin of natural gas in the Sinian-Cambrian of central Sichuan Paleo-uplift,Sichuan Basin,SW China[J].Petroleum Exploration and Development,2015,42(6):702-711.[魏国齐,谢增业,宋家荣,等.四川盆地川中古隆起震旦系—寒武系天然气特征及成因[J].石油勘探与开发,2015,42(6):702-711.]
[6]Jin Dongmin,Tan Xiucheng,Li Ling,et al.Characteristics and distribution of grain bank of the Lower Cambrian Longwangmiao Formation in Moxi-Gaoshiti area,Sichuan Basin[J].Journal of Palaeogeography,2015,17(3):347-357.[金东民,谭秀成,李凌,等.四川盆地磨溪—高石梯地区下寒武统龙王庙组颗粒滩特征及分布规律[J].古地理学报,2015,17(3):347-357.]
[7]Dai Jinxing,Pei Xigu,Qi Houfa,et al.Natural Gas Geology in China[M].Beijing:Petroleum Industry Press,1992:102-104.[戴金星,裴锡古,戚厚发,等.中国天然气地质学[M].北京:石油工业出版社,1992:102-104.]
[8]Zhang Lin,Wei Guoqi,Li Xizhe,et al.The thermal history of Sinian-Lower Palaeozic high/over mature source rock in Sichuan Basin[J].Natural Gas Geoscience,2007,18(5):726-731.[张林,魏国齐,李熙喆,等.四川盆地震旦系—下古生界高过成熟烃源岩演化史分析[J].天然气地球科学,2007,18(5):726-731.]
[9]Hao Bin,Hu Suyun,Huang Shipeng,et al.Geochemical characteristics and its significance of reservoir bitumen of Longwangmiao formation in Moxi area,Sichuan Basin[J].Geoscience,2016,30(3):1-13.[郝彬,胡素云,黄士鹏,等.四川盆地磨溪地区龙王庙组储层沥青的地球化学特征及其意义[J].现代地质,2016,30(3):1-13.]
[10]Duan Z H,Moller N,Greenberg J,et al.Prediction of methane solubility in natural waters to high ionic strength from 0 to 250℃ and from 0 to 1600 bar[J].Geochimica et Cosmochimica Acta,1992,56(4),1451-1460.
[11]Qin Shengfei,Zhou Guoxiao,Li Wei,et al.Geochemical evidence of water-soluble gas accumulation in the Weiyuan Gasfield,Sichuan Basin[J].Natural Gas Industry,2016,36(1):43-51.[秦胜飞,周国晓,李伟,等.四川盆地威远气田水溶气脱气成藏地球化学证据[J].天然气工业,2016,36(1):43-51.]
[12]Qin Shengfei.Carbon isotopic composition of water-soluble gases and its geological significance in the Sichuan Basin[J].Petroleum Exploration and Development,2012,39(3):313-319.[秦胜飞.四川盆地水溶气碳同位素组成特征及地质意义[J].石油勘探与开发,2012,39(3):313-319.]
[13]Zhang Jianyong,Liu Wenhui,Teng Geer,et al.Influences of TSR on gaseous hydrocarbon components and carbon isotopes:revelations from high-temperature and high-pressure simulation experiments[J].Petroleum Geology & Experiment,2012,34(1):66-77.[张建勇,刘文汇,腾格尔,等.TSR对气态烃组分及碳同位素组成的影响—高温高压模拟实验的证据[J].石油实验地质,2012,34(1):66-77.]
[14]Zhu Guangyou,Zhang Shuichang,Liang Yingbo,et al.Distribution of high H2S-bearing natural gas and evidence of TSR origin in the Sichuan Basin[J].Acta Geologica Sinica,2006,80(8):1208-1218.[朱光有,张水昌,梁英波,等.四川盆地高含H2S天然气的分布与TSR成因证据[J].地质学报,2006,80(8):1208-1218.]
[15]Zheng Ping,Shi Yuhua,Zou Chunyan,et al.Natural gas sources in the Dengying and Longwangmiao Formation in the Gaoshiti-Moxi area,Sichuan Basin[J].Natural Gas Industry,2014,34(3):50-54.[郑平,施雨华,邹春艳,等.高石梯—磨溪地区灯影组、龙王庙组天然气气源分析[J].天然气工业,2014,34(3):50-54.]
[16]Yuan Haifeng,Zhao Mingxia,Wang Guozhi,et al.Phases of hydrocarbon migration and accumulation in Cambrian Longwangmiao Formation of Moxi structure,Central Sichuan,China[J].Journal of Chengdu University of Technology:Science & Technology Edition,2014,41(6):694-702.[袁海锋,赵明霞,王国芝,等.川中磨溪构造寒武系龙王庙组油气运移期次[J].成都理工大学学报:自然科学版,2014,41(6):694-702.]
[17]Liu Wei,Wang Guozhi,Liu Shugen,et al,Characteristics and geological significance of fluid inclusions in Longwangmiao Formation of Moxi structure in Central Sichuan,China[J].Journal of Chengdu University of Technology:Science & Technology Edition,2014,41(6):723-732.[刘伟,王国芝,刘树根,等.川中磨溪构造龙王庙组流体包裹体特征及其地质意义[J].成都理工大学学报:自然科学版,2014,41(6):723-732.]
[18]Liu Dehan,Dai Jinxing,Xiao Xianming,et al.High density methane inclusions in Puguang Gasfield:Discovery and a T-P genetic study[J].Chinese Sci Bulletin,2010,55(4/5):359-366.[刘德汉,戴金星,肖贤明,等.普光气田中高密度甲烷包裹体的发现及形成的温度和压力条件[J].科学通报,2010,55(4/5):359-366.]
[19]Barker C.Calculated volume and pressure changes during the thermal cracking of oil to gas in reservoirs[J].The American of Petroleum Geologists Bulletin,1990,74(8):1254-1261.
[20]Luo Bing,Zhou Gang,Luo Wenjun,et al.Discovery from exploration of Lower Paleozoic-Sinian system in Central Sichuan Palaeo-uplift and its natural gas abundance law[J].China Petroleum Exploration,2015,20(2):18-29.[罗冰,周刚,罗文军,等.川中古隆起下古生界—震旦系勘探发现与天然气富集规律[J].中国石油勘探,2015,20(2):18-29.]
[21]Chen Zhonghong,Cha Ming,Qu Jiangxiu.Conditions and mechanism of hydrocarbon accumulation in overpressured systems in sedimentary basins[J].Natural Gas Geoscience,2003,14(2):97-102.[陈中红,查明,曲江秀.沉积盆地超压体系油气成藏条件及机理[J].天然气地球科学,2003,14(2):97-102.]
[22]Zhang Lu,Xie Zengye,Wang Zhihong,et al.Caprock characteristics and sealing ability evaluation of Sinian-Cambrian gas reservoirs in Gaoshiti-Moxi area,Sichuan Basin[J].Natural Gas Geoscience,2015,26(5):796-804.[张璐,谢增业,王志宏,等.四川盆地高石梯—磨溪地区震旦系—寒武系气藏盖层特征及封闭能力评价[J].天然气地球科学,2015,26(5):796-804.]
[23]Hu Xulong,Li Jin,Zhang Min,et al.Judge gas reservoir preservation by chemical characteristic parameters of formation water examples from Hutubi and Huoerguosi oil-gas fields[J].Natural Gas Exploration & Development,2008,31(4):23-26.[胡绪龙,李瑾,张敏,等.地层水化学特征参数判断气藏保存条件——以呼图壁、霍尔果斯油气田为例[J].天然气勘探与开发,2008,31(4):23-26.]
[24]Wu Juan,Liu Shungen,Zhao Yihua,et al.Fluid characteristics of Upper Sinian-Lower Cambrian petroliferous strata in Gaoshiti-Moxi structure of Sichuan Basin,China[J].Journal of Chengdu University of Technology:Science & Technology Edition,2014,41(6):713-722.[吴娟,刘树根,赵异华,等.四川盆地高石梯—磨溪构造震旦系—寒武系含气层系流体特征[J].成都理工大学学报:自然科学版,2014,41(6):713-722.]
[25]Liu Shugen,Sun Wei,Zhao Yihua,et al.Differential accumulation and distribution of natural gas and their main controlling factors in the Upper Sinian Dengying Formation,Sichuan Basin[J].Natural Gas Industry,2015,35(1):10-23.[刘树根,孙玮,赵异华,等.四川盆地震旦系灯影组天然气的差异聚集分布及其主控因素[J].天然气工业,2015,35(1):10-23.]
[26]Liu Shugen,Sun Wei,Li Zhiwu,et al.Tectonic uplifting and gas pool formation since Late Cretaceous Epoch,Sichuan Basin[J].Natural Gas Geoscience,2008,19(3):293-300.[刘树根,孙玮,李智武,等.四川盆地晚白垩世以来的构造隆升作用与天然气成藏[J].天然气地球科学,2008,19(3):293-300.]

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[1] 付广;王剑秦. 地壳抬升对油气藏保存条件的影响[J]. 天然气地球科学, 2000, 11(2): 18 -23 .
[2] 周兴熙;. 库车油气系统油气藏相态分布及其控制因素[J]. 天然气地球科学, 2004, 15(3): 205 -213 .
[3] 刘春慧;金振奎;朱桂芳;王庆东;张建良. . 准噶尔盆地东部吉木萨尔凹陷二叠系梧桐沟组储层物性特征及控制因素[J]. 天然气地球科学, 2007, 18(3): 375 -379 .
[4] 张顺存,;王凌;石新璞;方琳浩,;董文举,;孔玉华 . 准噶尔盆地腹部陆西地区石炭系火山岩储层的物性特征及其与电性的关系[J]. 天然气地球科学, 2008, 19(2): 198 -203 .
[5] 朱小燕;孙卫;李建霆;刘宏义;李爱琴;刘一仓;田随良;胡建基 . 陇东城壕—南梁地区长6储层特征研究[J]. 天然气地球科学, 2007, 18(6): 903 -907 .
[6] 张朝;张廷山;魏祥峰;戴传瑞;王秀林 . 也门X区块下白垩统沉积相分析[J]. 天然气地球科学, 2008, 19(06): 835 -839 .
[7] 朱维耀;宋洪庆; 何东博;王明 ;贾爱林;胡永乐 . 含水低渗气藏低速非达西渗流数学模型及产能方程研究[J]. 天然气地球科学, 2008, 19(05): 685 -689 .
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