辽河东部凹陷驾掌寺—小龙湾地区沙三段上亚段沉积古地理及聚煤作用分析
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摘要
利用钻探、测井及地震资料对辽河盆地东部凹陷驾掌寺—小龙湾地区沙河街组三段上亚段进行了沉积环境和聚煤作用分析,编制了各种单因素图件及古地理图,识别出冲积扇、三角洲平原、三角洲前缘和前三角洲以及滨浅湖等古地理单元。分析认为,研究区物源来自东侧东部斜坡带和西侧中央凸起,并在区内沉积中心—驾掌寺—小龙湾凹陷处汇集,在适宜的气候、缓和的构造背景、适中的沉降幅度、较少的碎屑输入条件下,有一定水体深度的三角洲平原分流间湾沼泽区是成煤的有利地带,巨厚煤层分布于小龙湾地区的小14井、小5井以及小31井一带。
Sedimentary paleogeography and coal accumulation were analyzed for the upper part of Member III,Shahejie Formation in the Jiazhangsi area of the eastern Liaohe sag,single-factor plots and paleogeographic map were drawn and palaogeographic units,including alluvial fan,delta plain,delta front,prodelta and shore-shallow lacustrine were recognized.Two provenances deriving from the eastern structural slope to the east and the central uplift to the west provided sediments into the Jiazhangsi-Xiaolongwan depression.The coal accumulation was favored by a suitable(humid and warm) climate,gentle tectonic setting,moderate subsidence and less detritus inputting,and coal is prone to be developed in mires which developed in interdistributary bay of the deltaic plain where provided with condign water deepness.Extremely thick coals were developed in the wells Xiao14,Xiao 5 and Xiao 31 in the Xiaolongwan area。
Sedimentary paleogeography and coal accumulation were analyzed for the upper part of Member III,Shahejie Formation in the Jiazhangsi area of the eastern Liaohe sag,single-factor plots and paleogeographic map were drawn and palaogeographic units,including alluvial fan,delta plain,delta front,prodelta and shore-shallow lacustrine were recognized.Two provenances deriving from the eastern structural slope to the east and the central uplift to the west provided sediments into the Jiazhangsi-Xiaolongwan depression.The coal accumulation was favored by a suitable(humid and warm) climate,gentle tectonic setting,moderate subsidence and less detritus inputting,and coal is prone to be developed in mires which developed in interdistributary bay of the deltaic plain where provided with condign water deepness.Extremely thick coals were developed in the wells Xiao14,Xiao 5 and Xiao 31 in the Xiaolongwan area。
引文
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[18]邵龙义,刘天绩,冉茂云,等.吐哈盆地早侏罗世八道湾组古环境与聚煤作用分析[J].辽宁工程技术大学学报,2006,25(2):189-192.SHAO Long yi,LIU Tian ji,RAN Mao yun et al.Palaeo environmentsand coal accumulation of Early Jurassic Badaowan Formation inTurpan-Hami oil basin northwestern China[J].Journal of Liaoning Technical University,2006,25(2):189-192.
[19]袁井菊,陈明,何晓松,等.辽河东部凹陷古近系层序地层格架及成因分析[J].石油地球物理勘探,2006,41(3):350-356.YUAN Jing Ju,CHEN Ming,HE Xiao song et al.Analysis of tertiarysequence stratigraphic framework and genesis in east Liaohe Sag[J].OGP,2006,41(3):350-356.
[2]Lambiase J J,Bosworth W.Structural controls on sedimentation incontinental rifts[M]//Lambiase J J.Hydrocarbon Habitat In Rift Basins.Geological Society Special Publication,1995,80:117-144.
[3]Morley C K.Comparison of hydrocarbon prospectivity in rift systems[M]//morley C K.geoscience of rift systems evolution of east Africa.AAPG Studies in Geology,1999,44:230-240.
[4]YANG Yong tai,XU Tian guang.Hydrocarbon habitat of the offshore Bohai Basin,China[J].Marine and Petroleum Geology,2004,21(6):691-708.
[5]CHEN Dong xia,PANG Xiong qi,JIANG Zhen xue.Hydrocarbon accumulation in lacustrine turbidite in the rift basin,Bohai Bay[J].Petroleum Science,2006,3(1):12-26.
[6]薛叔浩,罗平,杨永泰,等.辽河坳陷沉积体系与油气分布[J].石油勘探与开发,1997,24(4):19-22.XUE Shu hao.Depositional systems and oil/gas distribution in theLiaohe Depress[J].Petroleum Exploration and Exploitation,1997,24(4):19-22.
[7]于兴河,张道建,等.辽河油田东、西部凹陷深层沙河街组沉积相模式[J].古地理学报,1999,1(3):40-49.YU Xing he,ZHANG Dao jian,GAO Jian jun et al.Depositional faciesand models of deep burial strata of the shahejie formation in the easternand western depressions of Liaohe Oilfield[J].Journal Of Palaeogeography,1999,1(3):40-49.
[8]张占文,陈振岩,郭克园,等.辽河盆地天然气地质[M].北京:地质出版社,2002:2-10.
[9]李潍莲,孙红军,唐文连.辽河盆地东部凹陷北段古近系层序地层特征及油气藏分布[J].中国石油大学学报(自然科学版),2004,28(5):1-5.LI Wei lian,SUN Hong jun,TANG Wen lian.Sequence stratigraphiccharacteristics and petroleum distribution in the palaeogene of northernsection in the eastern sag of Liaohe Basin[J].Journal of the Universityof Petroleum,2004,28(5):1-5.
[10]孙洪斌,张凤莲.辽河坳陷古近系构造—沉积演化特征[J].岩性油气藏,2008,20(2):60-66.SUN Hong bin,ZANG Feng lian.Structural-sedimentary evolutioncharacteristics of paleogene in Liaohe Depression[J].Lithologic Reservoirs,2008,20(2):60-66.
[11]曲爱英.辽河油田东部凹陷红星地区古近纪沉积—构造演化与油气藏分布预测研究[D].北京:中国地质大学(北京),2006.
[12]常海燕.辽河盆地桃园—大平房地区东营组沉积储层特征研究[D].北京:中国地质大学(北京),2006.
[13]李明生,孟召平,王金花,等.辽河盆地黄金带油田沙一段沉积微相及其物性特征[J].大庆石油学院学报,2006,30(6):9-12.LI Ming sheng,MENG Zhao ping,WANG Jin hua et al.Microfaces androck property characteristics of Sha 1 Formation in Huangjindai oil fieldof Liaohe Basin[J].Journal of Daqing Petroleum Institute,2006,30(6):9-11.
[14]彭苏萍,肖乾华,李宏伟,等.辽河断陷东部凹陷中段沙河街组砂岩储集体预测[J].地球学报,2003,24(5):435-438.PENG Su ping,XIAO Qian hua,LI Hong wei et al.Sandy ReservoirPrediction of the Shahejie Formation in Central East Depression,LiaoheBasin[J].ACTA GEOSCIENTIA SINICA,2003,24(5):435-438.
[15]张辉,姜志刚,赵忠英.辽河盆地东部凹陷沙三段煤层测井解译[J].辽宁工程技术大学学报.2006,25(增刊1):101-103.ZHANG Hui,JIANG Zhi-gang,ZHAO Zhong-ying.Logginginterpretation of coalbed of third member of Shahejie formation ineastern depression of Liaohe basin[J].Journal of Liaoning Technical University 2006,25(Supplement1):101-103.
[16]王宇林,赵忠英,姜志刚.辽河盆地东部凹陷沙三段聚煤特征[J].煤炭科学技术,2008,36(4):89-93.WANG Yu lin,ZHAO Zhong ying,J IANG Zhi gang.Gathered coalfeatures of No.3 coal measure in eastern depressed sand of Liaohe Basin[J].Coal Science and Technology,2008,36(4):89-93.
[17]辽河石油地质志编委会.中国石油地质志(卷3)[M].北京:石油工业出版社,1993:31-123.
[18]邵龙义,刘天绩,冉茂云,等.吐哈盆地早侏罗世八道湾组古环境与聚煤作用分析[J].辽宁工程技术大学学报,2006,25(2):189-192.SHAO Long yi,LIU Tian ji,RAN Mao yun et al.Palaeo environmentsand coal accumulation of Early Jurassic Badaowan Formation inTurpan-Hami oil basin northwestern China[J].Journal of Liaoning Technical University,2006,25(2):189-192.
[19]袁井菊,陈明,何晓松,等.辽河东部凹陷古近系层序地层格架及成因分析[J].石油地球物理勘探,2006,41(3):350-356.YUAN Jing Ju,CHEN Ming,HE Xiao song et al.Analysis of tertiarysequence stratigraphic framework and genesis in east Liaohe Sag[J].OGP,2006,41(3):350-356.
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