本文主要研究内容
作者陈玲玲(2019)在《黄县盆地古近系李家崖组油页岩特征及成矿条件分析》一文中研究指出:本文以黄县盆地古近系李家崖组为主要研究目的层,目的层以发育丰富的油页岩和煤资源为特征。本文基于钻孔资料、工业品质分类、地球化学分析、显微镜观察及沉积相分析等手段,对研究区油页岩与煤的成矿条件差异和有机质富集模式进行详细研究。研究区目的层可分为上含煤段和下含煤段,下含煤段发育油4和煤4;而上含煤段从下而上主要发育有油3、煤3、煤2、油2、煤1、油1、煤上1、煤上2、煤上3和油上3,共发育5层油页岩和7层煤。其中油4厚度为05.5m,埋深为100400m之间;油3厚度为00.8m,埋深为100500m,;油2厚度为022m,埋深为1001100m;油1厚度04m,埋深为100400m;油上3层厚度0.41.0m,埋深为200700m之间为,可见油4具有厚度大埋深相对较浅,具有较高的开采价值;油3虽然埋深较浅,但由于厚度过薄,不具有开采利用价值;油2为研究区稳定的可采层;油1品质较差,开采价值较低;油上3厚度较薄,开采利用价值低。黄县盆地李家崖组油页岩可划分为高品质油页岩和低品质油页岩。高品质油页岩(含油率12.0724.38%)有机质丰度较高,有机碳含量为20.0540.95%,有机质类型以混合型(I-II1)为主,处于未成熟的热演化阶段,具有低-中灰分(38.6864.41%)、中-高发热量(6.4918.85MJ/kg)和特低-低硫(0.311.77%)的特征。低品质油页岩(含油率3.694.56%)的有机碳含量为9.7615.40%,有机质类型以混合型(II2)为主,处于未成熟的热演化阶段,具有中灰分(70.7174.41%)、低-中高发热量(3.936.49MJ/kg)和特低硫(0.290.32%)的特征。煤的有机质丰度极高,有机碳含量为58.6%,有机质类型为腐殖型(Ⅲ),为中高含油率(11.73%)、低灰分(8.80%)、高发热量(24.89MJ/kg)、特低硫(0.25%)的含油煤。依据光片和生物标志化合物分析可知,黄县盆地李家崖组高品质油页岩有机质主要来源于湖泊内源的菌藻类体(层状藻为主),其次为外源的以陆源高等植物为来源的镜质组分,而壳质组分含量较少;低品质油页岩有机质主要为陆源的镜质组,次为内源藻类体,而外源壳质组分含量也较低;煤有机质以陆源高等植物镜质组为主,次为外源的壳质组分,无藻类体来源。元素地球化学参数CIA指数、Th/U、Rb/Sr和Fe/Mn比值分析结果表明,研究区李家崖组高品质油页岩形成时期古气候与低品质油页岩相比风化程度较高的更为温暖湿润环境,而煤发育在风化丰度较低的偏温暖湿润气候阶段。生物标志化合物(Pr/Ph、Pr/n-C17、Ph/n-C18)、Sr/Ba元素比值表明,李家崖组高品质油页岩主要形成于弱还原的半咸水-咸水条件下,其盐度的增加可能与海侵事件有关,低品质油页岩形成于弱氧化的淡水环境中,而煤形成于氧化的淡水环境。基于古气候、古水体条件、有机质来源及类型,建立了研究区油页岩和煤垂向演化的有机质富集模型(A-E阶段)。在温暖湿润的古气候背景下,高品质油页岩形成于A和C阶段,此时,湖泊水体较深的浅湖环境,水体加深形成贫氧环境,海侵作用导致海水的大量注入使水体盐度增大,形成盐度分层,同时携带的大量营养物质,使水生生物大量繁盛,较高的湖泊生产力和良好的有机质保存条件下,最终形成高品质油页岩;低品质油页岩形成于B和E阶段,此时海侵作用结束,湖泊水体较浅,为浅湖淡水环境水生生物量减少,陆源有机质及碎屑矿物输入量增加,给湖泊水体携带较多的氧气,导致水体向弱氧化条件转化,因此,较低的古湖泊生产力和不利于有机质保存的淡水弱氧化环境形成品质较低的油页岩;煤形成于D阶段,此时湖盆沼泽化,浅湖淤积形成沼泽环境,盆地内植物繁盛,为煤的形成提供丰富的有机质来源。得出湖泊水体环境和有机质来源是研究区形成高、低品质油页岩形成的主控因素。
Abstract
ben wen yi huang xian pen de gu jin ji li jia ya zu wei zhu yao yan jiu mu de ceng ,mu de ceng yi fa yo feng fu de you xie yan he mei zi yuan wei te zheng 。ben wen ji yu zuan kong zi liao 、gong ye pin zhi fen lei 、de qiu hua xue fen xi 、xian wei jing guan cha ji chen ji xiang fen xi deng shou duan ,dui yan jiu ou you xie yan yu mei de cheng kuang tiao jian cha yi he you ji zhi fu ji mo shi jin hang xiang xi yan jiu 。yan jiu ou mu de ceng ke fen wei shang han mei duan he xia han mei duan ,xia han mei duan fa yo you 4he mei 4;er shang han mei duan cong xia er shang zhu yao fa yo you you 3、mei 3、mei 2、you 2、mei 1、you 1、mei shang 1、mei shang 2、mei shang 3he you shang 3,gong fa yo 5ceng you xie yan he 7ceng mei 。ji zhong you 4hou du wei 05.5m,mai shen wei 100400mzhi jian ;you 3hou du wei 00.8m,mai shen wei 100500m,;you 2hou du wei 022m,mai shen wei 1001100m;you 1hou du 04m,mai shen wei 100400m;you shang 3ceng hou du 0.41.0m,mai shen wei 200700mzhi jian wei ,ke jian you 4ju you hou du da mai shen xiang dui jiao jian ,ju you jiao gao de kai cai jia zhi ;you 3sui ran mai shen jiao jian ,dan you yu hou du guo bao ,bu ju you kai cai li yong jia zhi ;you 2wei yan jiu ou wen ding de ke cai ceng ;you 1pin zhi jiao cha ,kai cai jia zhi jiao di ;you shang 3hou du jiao bao ,kai cai li yong jia zhi di 。huang xian pen de li jia ya zu you xie yan ke hua fen wei gao pin zhi you xie yan he di pin zhi you xie yan 。gao pin zhi you xie yan (han you lv 12.0724.38%)you ji zhi feng du jiao gao ,you ji tan han liang wei 20.0540.95%,you ji zhi lei xing yi hun ge xing (I-II1)wei zhu ,chu yu wei cheng shou de re yan hua jie duan ,ju you di -zhong hui fen (38.6864.41%)、zhong -gao fa re liang (6.4918.85MJ/kg)he te di -di liu (0.311.77%)de te zheng 。di pin zhi you xie yan (han you lv 3.694.56%)de you ji tan han liang wei 9.7615.40%,you ji zhi lei xing yi hun ge xing (II2)wei zhu ,chu yu wei cheng shou de re yan hua jie duan ,ju you zhong hui fen (70.7174.41%)、di -zhong gao fa re liang (3.936.49MJ/kg)he te di liu (0.290.32%)de te zheng 。mei de you ji zhi feng du ji gao ,you ji tan han liang wei 58.6%,you ji zhi lei xing wei fu shi xing (Ⅲ),wei zhong gao han you lv (11.73%)、di hui fen (8.80%)、gao fa re liang (24.89MJ/kg)、te di liu (0.25%)de han you mei 。yi ju guang pian he sheng wu biao zhi hua ge wu fen xi ke zhi ,huang xian pen de li jia ya zu gao pin zhi you xie yan you ji zhi zhu yao lai yuan yu hu bo nei yuan de jun zao lei ti (ceng zhuang zao wei zhu ),ji ci wei wai yuan de yi liu yuan gao deng zhi wu wei lai yuan de jing zhi zu fen ,er ke zhi zu fen han liang jiao shao ;di pin zhi you xie yan you ji zhi zhu yao wei liu yuan de jing zhi zu ,ci wei nei yuan zao lei ti ,er wai yuan ke zhi zu fen han liang ye jiao di ;mei you ji zhi yi liu yuan gao deng zhi wu jing zhi zu wei zhu ,ci wei wai yuan de ke zhi zu fen ,mo zao lei ti lai yuan 。yuan su de qiu hua xue can shu CIAzhi shu 、Th/U、Rb/Srhe Fe/Mnbi zhi fen xi jie guo biao ming ,yan jiu ou li jia ya zu gao pin zhi you xie yan xing cheng shi ji gu qi hou yu di pin zhi you xie yan xiang bi feng hua cheng du jiao gao de geng wei wen nuan shi run huan jing ,er mei fa yo zai feng hua feng du jiao di de pian wen nuan shi run qi hou jie duan 。sheng wu biao zhi hua ge wu (Pr/Ph、Pr/n-C17、Ph/n-C18)、Sr/Bayuan su bi zhi biao ming ,li jia ya zu gao pin zhi you xie yan zhu yao xing cheng yu ruo hai yuan de ban xian shui -xian shui tiao jian xia ,ji yan du de zeng jia ke neng yu hai qin shi jian you guan ,di pin zhi you xie yan xing cheng yu ruo yang hua de dan shui huan jing zhong ,er mei xing cheng yu yang hua de dan shui huan jing 。ji yu gu qi hou 、gu shui ti tiao jian 、you ji zhi lai yuan ji lei xing ,jian li le yan jiu ou you xie yan he mei chui xiang yan hua de you ji zhi fu ji mo xing (A-Ejie duan )。zai wen nuan shi run de gu qi hou bei jing xia ,gao pin zhi you xie yan xing cheng yu Ahe Cjie duan ,ci shi ,hu bo shui ti jiao shen de jian hu huan jing ,shui ti jia shen xing cheng pin yang huan jing ,hai qin zuo yong dao zhi hai shui de da liang zhu ru shi shui ti yan du zeng da ,xing cheng yan du fen ceng ,tong shi xie dai de da liang ying yang wu zhi ,shi shui sheng sheng wu da liang fan cheng ,jiao gao de hu bo sheng chan li he liang hao de you ji zhi bao cun tiao jian xia ,zui zhong xing cheng gao pin zhi you xie yan ;di pin zhi you xie yan xing cheng yu Bhe Ejie duan ,ci shi hai qin zuo yong jie shu ,hu bo shui ti jiao jian ,wei jian hu dan shui huan jing shui sheng sheng wu liang jian shao ,liu yuan you ji zhi ji sui xie kuang wu shu ru liang zeng jia ,gei hu bo shui ti xie dai jiao duo de yang qi ,dao zhi shui ti xiang ruo yang hua tiao jian zhuai hua ,yin ci ,jiao di de gu hu bo sheng chan li he bu li yu you ji zhi bao cun de dan shui ruo yang hua huan jing xing cheng pin zhi jiao di de you xie yan ;mei xing cheng yu Djie duan ,ci shi hu pen zhao ze hua ,jian hu yu ji xing cheng zhao ze huan jing ,pen de nei zhi wu fan cheng ,wei mei de xing cheng di gong feng fu de you ji zhi lai yuan 。de chu hu bo shui ti huan jing he you ji zhi lai yuan shi yan jiu ou xing cheng gao 、di pin zhi you xie yan xing cheng de zhu kong yin su 。
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论文详细介绍
论文作者分别是来自吉林大学的陈玲玲,发表于刊物吉林大学2019-06-25论文,是一篇关于黄县盆地论文,李家崖组论文,油页岩和煤论文,地球化学特征论文,展布特征论文,有机质富集论文,吉林大学2019-06-25论文的文章。本文可供学术参考使用,各位学者可以免费参考阅读下载,文章观点不代表本站观点,资料来自吉林大学2019-06-25论文网站,若本站收录的文献无意侵犯了您的著作版权,请联系我们删除。
标签:黄县盆地论文; 李家崖组论文; 油页岩和煤论文; 地球化学特征论文; 展布特征论文; 有机质富集论文; 吉林大学2019-06-25论文;