松辽盆地北部石炭—二叠系油气远景
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摘要
松辽盆地基底内部石炭—二叠系生烃潜力一直是人们关注的焦点。松深地震剖面和钻井资料显示:松辽盆地北部基底及其周边地区石炭—二叠系分布广、厚度大,主要分布于西部断陷区、中央断隆区和东南断隆区,林甸地区厚度达7 km;三肇地区及肇东地区厚度达到6 km,东北隆起区厚度达5 km。基底石炭—二叠系有机质类型一般为Ⅱ2—Ⅲ型,总有机碳含量高,热演化程度不均一。通过TTI-Ro法恢复了松辽盆地北部基底石炭—二叠系上覆地层沉积之前的热演化程度,有机质成熟度有明显变化,盆地东部有利于二次生烃。另外,松辽盆地石炭—二叠系具有二次生烃的热演化条件。石炭—二叠系油气远景主要受石炭—二叠系发育情况、二次埋藏前及二次埋藏过程中的热演化程度控制,松辽盆地北部石炭—二叠系存在3个有利的油气远景区:西部断陷区的林甸地区、东北隆起区的绥化断陷区、东南断陷区徐家围子断陷区。
The potential of Carboniferous-Permian hydrocarbon has been the focus of attention within the basement of Songliao basin.According to Song-deep seismic profiles and drilling data,Carboniferous-Permian Formation of Songliao basin basement and its surrounding areas have wide distribution and large thickness,and mainly distributed in west depress area,the central fault uplift area and the southeast fault uplift area.Lindian has the most thickness of 7 km,secondly,in Three-zhao area,the thickness in Zhaodong is to 6 km,the thickness in Northeast uplift area is 5 km.Type of organic matter of Carboniferous-Permian Formation in basement of Songliao basin belongs toⅡ2-Ⅲ type generally,total organic carbon content is high,and the degree of evolution is heterogeneous.By TTI-Ro method we restore thermal evolution of the overlying Pre-Carboniferous-Permian sedimentation in basement of the north Songliao basin,maturity of organic matter changes significantly,eastern basinis in favor of secondary hydrocarbon generation.The hydrocarbon potential of Carboniferous-Permian is controlled by the Carboniferous-Permian development,thermal evolution before and during the second burial.There are three favorable oil-gas potential area in Carboniferous-Permian Formation developed in basement of Songliao basin including Lindian area in west rift zone,Suihua rift zone of northeast uplift area and Xujiaweizi rift zone in south-east rift zone.
The potential of Carboniferous-Permian hydrocarbon has been the focus of attention within the basement of Songliao basin.According to Song-deep seismic profiles and drilling data,Carboniferous-Permian Formation of Songliao basin basement and its surrounding areas have wide distribution and large thickness,and mainly distributed in west depress area,the central fault uplift area and the southeast fault uplift area.Lindian has the most thickness of 7 km,secondly,in Three-zhao area,the thickness in Zhaodong is to 6 km,the thickness in Northeast uplift area is 5 km.Type of organic matter of Carboniferous-Permian Formation in basement of Songliao basin belongs toⅡ2-Ⅲ type generally,total organic carbon content is high,and the degree of evolution is heterogeneous.By TTI-Ro method we restore thermal evolution of the overlying Pre-Carboniferous-Permian sedimentation in basement of the north Songliao basin,maturity of organic matter changes significantly,eastern basinis in favor of secondary hydrocarbon generation.The hydrocarbon potential of Carboniferous-Permian is controlled by the Carboniferous-Permian development,thermal evolution before and during the second burial.There are three favorable oil-gas potential area in Carboniferous-Permian Formation developed in basement of Songliao basin including Lindian area in west rift zone,Suihua rift zone of northeast uplift area and Xujiaweizi rift zone in south-east rift zone.
引文
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[2]刘晓艳,杜鸿烈,陈章明,等.松辽盆地边缘石炭—二叠系地表石油显示及其地质意义[J].地球化学,2001,30(4):390-394.LIU Xiao-yan,DU Hong-lie,CHEN Zhang-ming,et al.Show of petroleum of C-P systems on the earth’s surfaceat the edge of Songliao basin and its geological signifi-cance[J].Geochimica,2001,30(4):390-394.
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[4]杨光,薛林福,刘振彪,等.松辽盆地深部地震剖面解释与深部地质研究[J].石油与天然气地质,2001,22(4):326-336.YANG Guang,XUE Lin-fu,LIU Zhen-biao,et al.Stu-dies of deep geology with seismic section interpretation inSongliao basin[J].Oil&Gas Geology,2001,22(4):326-336.
[5]高君,李占林,李勤学.松辽盆地北部深部地壳结构及盆地成因机制[J].大庆石油地质与开发,2002,21(1):20-23.GAO Jun,LI Zhan-lin,LI Qin-xue.Crustal structure be-neath northern Songliao basin and Songliao basin genesismechanism[J].Petroleum Geology and Oilfield Develop-ment in Daqing,2002,21(1):20-23.
[6]刘永江,张兴洲,金巍,等.东北地区晚古生代区域构造演化[J].中国地质,2010,37(4):943-951.LIU Yong-jiang,ZHANG Xing-Zhou,JIN Wei,et al.Late Paleozoic tectonic evolution in Northeast China[J].Geology in China,2010,37(4):943-951.
[7]王成文,金巍,张兴洲,等.东北及邻区晚古生代大地构造属性新认识[J].地层学杂志,2008,32(2):119-136.WANG Cheng-wen,JIN Wei,ZHANG Xing-zhou,et al.New understanding of the Late Paleozoic tectonics inNortheastern China and adjacent areas[J].Journal ofStratigraphy,2008,32(2):119-136.
[8]张兴洲,周建波,迟效国,等.东北地区晚古生代构造-沉积特征与油气资源[J].吉林大学学报:地球科学版,2008,38(5):719-725.ZHANG Xing-zhou,ZHOU Jian-bo,CHI Xiao-guo,etal.Late Paleozoic tectonic-sedimentation and petroleumresources in Northeastern China[J].Journal of Jilin Uni-versity:Earth Science Edition,2008,38(5):719-725.
[9]余和中,李玉文,韩守华,等.松辽盆地古生代构造演化[J].大地构造与成矿学,2001,25(4):389-396.YU He-zhong,LI Yu-wen,HAN Shou-hua,et al.TheCarboniferous-Permian source rocks in the Songliao basin[J].Geotectonica et Metallogenia,2001,25(4):389-396.
[10]余和中.松辽盆地及周边地区石炭纪—二叠纪岩相古地理[J].沉积与特提斯地质,2001,21(4):70-83.YU He-zhong.Sedimentary facies and palaeogeographyof the Songliao basin and its peripheral areas during Car-boniferous-Permiantime[J].Sedimentary Geology andTethyan Geology,2001,21(4):70-83.
[11]章凤奇.松辽盆地北部早白垩世火山事件与地球动力学[D].杭州:浙江大学,2007.ZHANG Feng-qi.Early Cretaceous volcanic event in thenorthern Songliao basin and its geodynamics[D].Hang-zhou:Zhejiang University,2007.
[12]王鸿祯,郑闾靱,王训练.中国及邻区石炭纪构造古地理及生物古地理[J].现代地质,1989,3(2):137-154.WANG Hong-zhen,ZHENG Lü-ren,WANG Xun-lian.The tectono-palaeogeography and biogeography of Chinaand adjacent regions in the carboniferous period[J].Geoscience,1989,3(2):137-154.
[13]侯启军,冯志强,冯子辉,等.松辽盆地陆相石油地质学[M].北京:石油工业出版社,2009.HOU Qi-jun,FENG Zhi-qiang,FENG Zi-hui,et al.Continental petroleum geology in Songliao basin[M].Beijing:Petroleum Industry Press,2009.
[14]余和中,蔡希源,韩守华,等.松辽盆地石炭—二叠系分布与构造特征[J].大地构造与成矿学,2003,27(3):277-281.YU He-zhong,CAI Xi-yuan,HAN Shou-hua,et al.Distrbution of the Carboniferous-Permian and its tectoniccharacteristics in Songliao basin[J].Geotectonica etMetallogenia,2003,27(3):277-281.
[15]朱德丰,任延广,吴河勇,等.松辽盆地北部隐伏二叠系和侏罗系的初步研究[J].地质科学,2007,42(4):690-708.ZHU De-feng,REN Yan-guang,WU He-yong,et al.Aprelmnary study on the buried Permian and Jurassic inthe northern Songliao basin[J].Chinese Journal of Ge-ology,2007,42(4):690-708.
[16]余和中,蔡希源,韩守华,等.松辽盆地石炭—二叠系烃源岩研究[J].沉积与特提斯地质,2003,23(2):62-66.YU He-zhong,CAI Xi-yuan,HAN Shou-hua,et al.The Carboniferous-Permian source rocks in the Song-liaobasin[J].Sedimentary Geology and Tethyan Geology,2003,23(2):62-66.
[17]冯子辉,孙春林,刘伟,等.松辽盆地基底浅变质岩的有机地球化学特征[J].地球化学,2005,34(1):73-78.FENG Zi-hui,SUN Chun-lin,LIU Wei,et al.Organicgeochemistry of epimetamorphic rock in basement of theSongliao basin[J].Geochimica,2005,34(1):73-78.
[18]杨春,罗霞,李剑,等.松辽盆地北部基底浅变质岩热模拟实验及其气态产物地球化学特征[J].中国科学:D辑,2007,37(增刊2):118-124.YANG Chun,LUO Xia,LI Jian,et al.Thermal simula-tion experiment and geochemical characteristics of gasproduction in basement of the northern Songliao basin[J].Science in China:Series D,2007,37(Sup.2):118-124.
[19]史征.松辽盆地北部石炭—二叠系构造-热演化史与生烃史的关系研究[D].西安,西北大学,2010.SHI Zheng.Research on relation between tectonic-ther-mal evolution history and hydrocarbon generation historyof Carboniferous-Permian in the north of Songliao basin[D].Xi’an:Northwest Universty,2010.
[20]洪雪,彭晓蕾,刘立,等.吉中磐石地区下石炭统鹿圈屯组海相暗色泥岩特征[J].吉林大学学报:地球科学版,2009,29(2):225-231.HONG Xue,PENG Xiao-lei,LIU Li,et al.Charac-teristics of the dark marine mudstone of the Lower Car-boniferous Luquantun Formation in the Panshi area,central Jilin Province[J].Journal of Jilin University:Earth Science Edition,2009,29(2):225-231.
[21]万传彪,杨建国,余和中,等.松辽盆地及周边地区石炭—二叠系划分对比、古环境及油气远景评价[R].大庆:大庆石油学院,2003:119-128.WAN Chuan-biao,YANG Jian-guo,YU He-zhong,etal.Stratigraphic classification and correlation of Carbo-niferous and Permian,paleo-environment and hydrocar-bon prospect evaluation in Songliao basin and its sur-rounding area[R].Daqing:Daqing Petroleum Institute,2003:119-128.
[22]李贤庆,马安来,钟宁宁,等.烃源岩有机岩石学研究方法与应用[M].重庆:重庆大学出版社,1997.LI Xian-qing,MA An-lai,ZHONG Ning-ning,et al.Research methods and application on hydrocarbon sourcerocks organic petrology[M].Chongqing:ChongqingUniversity Press,1997.
[23]Richards A M,Engebretson C D.Largescale mantle con-vertion and the history of subduction[J].Nature,1992,355:437-440.
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