吴伟,罗冰,罗文军,王文之
Wu Wei,Luo Bing,Luo Wen-jun,Wang Wen-zhi
摘要: 川中古隆起震旦系气源的问题存在争议。重新梳理了震旦系天然气气源对比的主要地球化学证据,发现:川中寒武系和震旦系的天然气乙烷碳同位素与乙烷含量符合同一个瑞利分馏模型,乙烷碳同位素的差异并非是母质类型造成的;震旦系内部甲烷氢同位素值随碳同位素值增加而异常降低,是因过成熟阶段地层水参与了氢交换反应而非水介质盐度的差异;灯影组储层沥青4-甲基二苯并噻吩/1-甲基二苯并噻吩值西南高,东北低,反映油气主要从裂陷槽筇竹寺组侧向运移而来;C7轻烃富甲基环己烷而贫甲苯,天然气主要来自油裂解而非碳酸盐岩。目前没有充足的地球化学证据证明震旦系烃源岩对灯影组天然气有明显贡献,贡献最大的烃源岩是安岳_德阳裂陷槽内筇竹寺组泥岩。
中图分类号:
[1]Zhu G Y,Wang T S,Xie Z Y,et al.Giant gas discovery in the Precambrian deeply buried reservoirs in the Sichuan Basin,China:Implications for gas exploration in old cratonic basins[J].Precambrian Research,2015,262:45-66.
[2]Zou C N,Yang Z,Dai J X,et al.The Characteristics and significance of conventional and unconventional Sinian-Silurian gas systems in the Sichuan Basin,central China[J].Marine and Petroleum Geology,2015,64:386-402. [3]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.] [4]Wei Guoqi,Xie Zengye,Bai Guilin,et al.Organic geochemical characteristics and origin of natural gas in the Sinian-Lower Paleozoic reservoirs,Sichuan Basin[J].Natural Gas Industry,2014,34(3):44-49.[魏国齐,谢增业,白贵林,等.四川盆地震旦系—下古生界天然气地球化学特征及成因判识[J].天然气工业,2014,34(3):44-49.] [5]Dai Jinxing,Pei Xigu,Qi Houfa.Natrual Gas Geology in China:Vol.1[M].Beijing:Petroleum Industry Press,1992:65-86.[戴金星,裴锡古,戚厚发.中国天然气地质学:卷一[M].北京:石油工业出版社,1992:65-86.] [6]Wu Wei,Fang Chenchen,Dong Dazhong,et al.Shale gas geochemical anomalies and gas sourceidentification[J].Acta Peitrolei Sinica,2015,36(11):1332-1366.[吴伟,房忱琛,董大忠,等.页岩气地球化学异常与气源识别[J].石油学报,2015,36(11):1332-1366.] [7]Xia X Y,Chen J,Braun R,et al.Isotopic reversals with respect to maturity trends due to mixing of primary and secondary products in source rocks[J].Chemical Geology,2013,339:205-212. [8]Wu Wei.The Geochemical Characteristics and Its Origin of Silurian Longmaxi Shale Gas in Sichuan Basin[D].Beijing:Doctoral Dissertation of Institute of Petroleum Exploration and Development,2015:41-63.[吴伟.四川盆地志留系龙马溪组页岩气地球化学特征与成因[D].北京:中国石油勘探开发研究院博士学位论文,2015:41-63.] [9]Burruss R C,Laughrey C D.Carbon and hydrogen isotopic reversals in deep basin gas:Evidence for limits to the stability of hydrocarbons[J].Organic Geochemistry,2010,42:1285-1296. [10]Galimov E M.Isotope Organic Geochemistry[J].Organic Geochemistry,2006,37:1200-1262. [11]Osborn S G,McIntosh J C.Chemical and isotopic tracers of the contribution of microbial gas in Devonian organic-rich shales and reservoir sandstones,northern Appalachian Basin[J].Applied Geochemistry,2010,25(3):456-471. [12]Rodriguez N D,Philp R P.Geochemical characterization of gases from the Mississippian Barnett Shale,Fort Worth Basin,Texas[J].AAPG Bulletin,2010,94(11),1641-1656. [13]Jenden P D,Draza D J,Kaplan I R.Mixing of thermogenic natural gas in north Appalachian Basin[J].AAPG Bulletin,1993,77(6):980-998. [14]Tilley B,Muehlenbachs K.Isotope reversals and universal stages and trends of gas maturation in sealed,self-contained petroleum systems[J].Chemical Geology,2013,339:194-204. [HJ1.6mm] [15]Hill R J,Jarvie D M,Zumberge J,et al.Oil and gas geochemistry and petroleum systems of the Fort Worth Basin[J].AAPG Bulletin,2007,91:445-473. [16]Zumberge J,Ferworn K J,Brown S.Isotopic reversal (‘rollover’) in shale gases produced from the Mississippian Barnett and Fayetteville formations[J].Marine and Petroleum Geology,2012,31:43-52. [17]Gao Lin,Schimmelmann A,Tang Yongchun,et al.Isotope rollover in shale gas observed in laboratory pyrolysis experiments:Insight to the role of water in thermogenesis of mature gas[J].Organic Geochemistry,2014,68:95-106. [18]Tian Xingwang,Hu Guoyi,Li Wei,et al.Geochemical characteristics and significance of Sinian reservoir bitumen in Leshan-Longnvsi paleo-uplift area,Sichuan Basin[J].Natural Gas Geoscience,2013,24(5):982-990.[田兴旺,胡国艺,李伟,等.四川盆地乐山—龙女寺古隆起地区震旦系储层沥青地球化学特征及意义[J].天然气地球科学,2013,24(5):982-990.] [19]Li Wei,Hu Guoyi,Zhou Jingao.Asphalt features and gas accumulation mechanism of Sinian reservoirs in the Tongwanpaleo-uplift,Sichuan Basin[J].Natural Gas Industry,2015,35(6):14-23.[李伟,胡国艺,周进高.四川盆地桐湾期古隆起震旦系储层沥青特征与天然气聚集机制[J].天然气工业,2015,35(6):14-23.] [20]Wang Tieguan,He Faqi,Li Meijun,et al.Alkyldibenzothiophenes:molecular tracers for filling pathway in oil reservoirs[J].Chinese Science Bulletin,2004,49(22):2399-2404.[王铁冠,何发岐,李美俊,等.烷基二苯并噻吩类:示踪油藏充注途径的分子标志物[J].科学通报,2005,50(2):176-182.] [21]Du Jinhu,Zou Caineng,Xu Chunchun,et al.Theoretical and technical innovations in strategic discovery of a giant gas field in Cambrian Longwangmiao Formation of central Sichuan paleo-uploft,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.] [22]Wang Zecheng,Jiang Hua,Wang Tongshan,et al.Paleo-geomorphology formed during Tongwantectonization in Sichuan Basin and its significance for hydrocarbon accumulation[J].Petroleum Exploration and Development,2014,41(3):305-312.[汪泽成,姜华,王铜山,等.四川盆地桐湾期古地貌特征及成藏意义[J].石油勘探与开发,2014,41(3):305-312.] [23]Cheng Bin,Liao Zewen,Wang Tongshan,et al.Multiple charges to Sinian reservoirs in the middle Sichuan Basin,SW China:Insight from the adsorbed/occluded hydrocarbons in solid bitumens[J].Journal of Petroleum Science and Engineering,2015,127:130-366. [24]Xu Guosheng,Yuan Haifeng,Ma Yongsheng,et al.The Source of Sinian and Lower-Palaeozoic bitumen and hydrocarbon evolution in the middle and southeast of Sichuan Basin[J].Acta Geologica Sinica,2007,81(8):1143-1152.[徐国盛,袁海峰,马永生,等.川中—川东南地区震旦系—下古生界沥青来源及成烃演化[J].地质学报,2007,81(8):1143-1152.] [25]Hu Guoyi,Xiao Zhongyao,Luo Xia,et al.Light hydrocarbon composition difference between two kinds of cracked gases and its application[J].Natural Gas Industry,2005,25(9):23-25.[胡国艺,肖中尧,罗霞,等.两种裂解气中轻烃组成差异性及其应用[J].天然气工业,2005,25(9):23-25.] [26]Zhao Wenzhi,Wang Zhaoyun,Wang Hongjun,et al.Further discussion on the connotation and significance of the natural gas relaying generation model from organic materials[J].Petroleum Exploration and Development,2011,38(2):129-135.[赵文智,王兆云,王红军,等.再论有机质“接力成气”的内涵与意义[J].石油勘探与开发,2011,38(2):129-135.] |
[1] | 龚德瑜, 张越迁, 郭文建, 宋志华, 卢山, 吴卫安. 次生生物甲烷与生物降解作用的判识——以准噶尔盆地腹部陆梁油气田为例[J]. 天然气地球科学, 2019, 30(7): 1006-1017. |
[2] | 吴小奇, 倪春华, 陈迎宾, 朱建辉, 李贶, 曾华盛. 鄂尔多斯盆地定北地区上古生界天然气来源[J]. 天然气地球科学, 2019, 30(6): 819-827. |
[3] | 吴伟涛, 王一, 赵靖舟, 杨特波, 李军, 黄正良. 鄂尔多斯盆地中部奥陶系马家沟组中组合天然气成藏规律[J]. 天然气地球科学, 2019, 30(6): 828-839. |
[4] | 胡自龙, 卞保力, 刘海磊, 赵龙, 卢山, 王绍清. 准噶尔盆地大井地区天然气成因、来源与成藏过程[J]. 天然气地球科学, 2019, 30(6): 850-859. |
[5] | 倪云燕, 廖凤蓉, 姚立邈, 高金亮, 张蒂嘉. 川中地区须家河组天然气氢同位素特征及其对水体咸化的指示意义[J]. 天然气地球科学, 2019, 30(6): 880-896. |
[6] | 魏强, 李贤庆, 孙可欣, 李瑾, 肖中尧, 梁万乐, 张亚超, . 塔里木盆地库车坳陷克深大气田深层天然气成藏地球化学特征[J]. 天然气地球科学, 2019, 30(6): 897-907. |
[7] | 范东稳, 卢振权, 刘晖, 肖睿, 王伟超, 李永红, 唐世琪. 南祁连盆地哈拉湖坳陷天然气水合物科学钻孔岩心顶空气组成及其地质意义[J]. 天然气地球科学, 2019, 30(4): 526-538. |
[8] | 刘如红, 李剑, 肖中尧, 李谨 , 张海祖, 卢玉红, 张宝收, 马卫, 李德江, 刘满仓. 塔里木盆地库车坳陷吐格尔明地区油气地球化学特征及烃源探讨[J]. 天然气地球科学, 2019, 30(4): 574-581. |
[9] | 孔庆芬 , 张文正, 李剑锋, 昝川莉, . 鄂尔多斯盆地奥陶系盐下天然气地球化学特征及成因[J]. 天然气地球科学, 2019, 30(3): 423-432. |
[10] | 张帆, 冉清昌, 吴玉明, 任志高. 松辽盆地北部古中央隆起带天然气地球化学特征及成藏条件[J]. 天然气地球科学, 2019, 30(1): 126-132. |
[11] | 于聪, 胡国艺, 陈瑞银. 不同煤系烃源岩热解气地球化学差异及其在苏里格气田的应用[J]. 天然气地球科学, 2019, 30(1): 133-142. |
[12] | 马安来, 朱翠山, 顾忆, 李慧莉. 塔中地区中深1C井寒武系原油低聚硫代金刚烷含量分析[J]. 天然气地球科学, 2018, 29(7): 1009-1019. |
[13] | 裴立新, 刚文哲, 朱传真, 刘亚洲, 何文军, 向宝力, 董岩. 准噶尔盆地烷烃气碳同位素组成及来源[J]. 天然气地球科学, 2018, 29(7): 1020-1030. |
[14] | 朱光有, 曹颖辉, 闫磊, 杨海军, 孙崇浩, 张志遥, 李婷婷, 陈永权. 塔里木盆地8 000m以深超深层海相油气勘探潜力与方向[J]. 天然气地球科学, 2018, 29(6): 755-772. |
[15] | 曹颖辉, 李洪辉, 闫磊, 王洪江, 张君龙, 杨敏, 赵一民. 塔里木盆地满西地区寒武系台缘带分段演化特征及其对生储盖组合的影响[J]. 天然气地球科学, 2018, 29(6): 796-806. |
|