松辽盆地十屋断陷沉积体系空间展布及演化规律研究
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摘要
通过对岩心、录井、测井及地震资料的综合研究,识别出冲积扇和扇三角洲等8种沉积相类型,并组合为冲积沉积体系、河流—三角洲沉积体系、水下扇—扇三角洲沉积体系和湖泊—深水重力流沉积体系等4种类型。研究表明在箕状单断凹陷的构造背景下,十屋断陷早期以冲积沉积体系为主,从沙河子组沉积期至泉头组沉积期,西部断裂带及北部陡坡带沉积体系由冲积沉积体系演化为水下扇—扇三角洲沉积体系,东南缓坡带的沉积体系由滨—浅湖相沉积体系演化为辫状河三角洲—河流相沉积体系,中部沉积类型多样。
Based on drill core,logging,hole logging and seismic data,we discerned 8 types of sedimentary facies,such as alluvial fan and fan delta etc.and grouped 4 types of depositional system,including alluvial fan system,river-delta system,underwater fan-fan delta system,lake-density flow system.The Shiwu rift subsidence was alluvial fan system at early phase.But at the period of Shahezi to Quantou,the depositional system type changed from alluvial fan system to underwater fan-fan delta system in the west fracture belt and the north steep slope belt,and from lake facies to braid delta-river faices in the southeast slow slope belt,and there is multiform sedimentary types in the middle part.
Based on drill core,logging,hole logging and seismic data,we discerned 8 types of sedimentary facies,such as alluvial fan and fan delta etc.and grouped 4 types of depositional system,including alluvial fan system,river-delta system,underwater fan-fan delta system,lake-density flow system.The Shiwu rift subsidence was alluvial fan system at early phase.But at the period of Shahezi to Quantou,the depositional system type changed from alluvial fan system to underwater fan-fan delta system in the west fracture belt and the north steep slope belt,and from lake facies to braid delta-river faices in the southeast slow slope belt,and there is multiform sedimentary types in the middle part.
引文
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[2]Tang Liming.The sedimentary characteristics and hydrocarbonpotential of Shiwu fault basin in Songliao basin[J].Journal ofChangchun University:Science and Technology,2002,4(32):345-348.[唐黎明.松辽盆地十屋断陷沉积特征与油气前景[J].吉林大学学报:地球科学版,2002,4(32):345-348.]
[3]Yu Kai,Hou Hongbin,Guo Nianfa,et al.Oil and Gas Geologyin South Sag of Songliao Basin[M].Beijing:Petroleum Indus-try Press,2002.[俞凯,侯洪斌,郭念发,等.松辽盆地南部断陷层石油天然气地质[M].北京:石油工业出版社,2002.]
[4]Mi Jingkui,Zhang Shuichang,Tao Shizhen,et al.Genesis andaccumulation period of the CO2in Changling fault depression ofSongliao basin,northeastern China[J].Natural Gas Geosci-ence,2008,19(4):452-456.[米敬奎,张水昌,陶士振,等.松辽盆地南部长岭断陷CO2成因与成藏期研究[J].天然气地球科学,2008,19(4):452-456.]
[5]Wang Guoshou.Characteristics of sedimentary systems in Shi-wu-Dehui region,Songliao basin[J].Oil&Gas Geology,2001,22(4):331-336.[王果寿.松辽盆地十屋—德惠地区沉积体系特征[J].石油与天然气地质,2001,22(4):331-336.]
[6]Wang Jufeng.Sedimentary facies types and evolution featureson steep slope belt in terrestrial fault-depressed basin—A casein Sha 3 and Sha 4 member of Minfeng area in Dongying de-pression[J].Natural Gas Geoscience,2008,19(5):611-617.[王居峰.陆相断陷盆地陡坡带沉积相类型与沉积演化特征——以东营凹陷民丰地区沙三段、沙四段为例[J].天然气地球科学,2008,19(5):611-617.]
[7]Xie Xinong,Huang Yanqiu,Lu Zongsheng.Depositional mod-el and tectonic evolution of Tertiary transform-extensional ba-sins in northeast China:Case study on Yitong and damintun-grabens[J].Journal of China University of Geosciences,1997,8(1):62-67.
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