松辽盆地长岭断陷火山活动与烃源岩成烃史分析

英文篇名：Volcanic Activities and Hydrocarbon-generating History in the Changling Fault Depression,Songliao Basin
中文刊名：地质论评
英文刊名：Geological Review
作者：闫相宾 ; 金晓辉 ; 李丽娜 ; 马晓娟 ; 赵春满
英文作者：YAN Xiangbin1) ; JIN Xiaohui1) ; LI Lina 1) ; MA Xiaojuan1) ; ZHAO Chunman2)1) SINOPEC Petroleum Exploration & Production Research Institute ; Beijing ; 100083 ; 2) Northeast Oilfield Company ; SINOPEC ; Changchun ; 130062
中文关键词：烃源岩 ; 火山活动 ; 生烃演化史 ; 长岭断陷 ; 松辽盆地
英文关键词：source rock ; volcanic activity ; hydrocarbon-generating history ; Changling fault depression ; Songliao Basin
出版日期：2009-03-15
机构：中国石油化工股份有限公司石油勘探开发研究院;中国石油化工股份有限东北油气分公司;
年：2009
期：02
出版单位：地质论评

摘要

长岭断陷SN109井地震层序地层表明断陷期主要存在三次较大规模的火山活动。烃源岩在3次热事件的长期作用过程中,有机质在沉积初期就处于较高的热演化环境中,加速了有机质的成熟过程。沙河子组—营城组烃源岩约在122Ma(登娄库组沉积末期)埋深1500m,Ro达到0.5%,烃源岩开始生烃,此时,还没有有效的盖层;119Ma时(泉头组沉积末期),烃源岩约埋深2000m,Ro大于1.3%,进入生气高峰和油裂解气阶段,泉二段盖层刚刚形成,天然气以散失为主,约95Ma(青山口组沉积末期)泉二段和青一、二段有效盖层形成,营城组烃源岩热演化Ro达到1.3～2%,油裂解气和高成熟天然气大量聚集,现今气藏中的天然气应以干气为主,勘探方向应加强盆地坳陷和斜坡区古构造,古气藏研究。
The seismic stratigraphy of the well SN109 shows that the Changling fault depression has three relatively large volcanic activities during rift faulting.Under the three hot events,organic matters were in higher thermal evolution environment during the early stage of deposition,which speeded up maturation of source rocks.Shahezi and Yingcheng Fm.began to generate hydrocarbon in about 122Ma(late Denglou Fm.) at a burial depth of 1500m,and the Ro value reached 0.5%,but at that time,there were no effective caprocks.When the Ro value reached 1.3% in 119Ma(late Quantou Fm.) at a burial depth of 2600m,source rocks entered the peak of gas generation and pyrolysis gas stage.At the same time,the caprock of Quan-2 Member had just deposited,natural gas were primarily dispersion.When the Ro value reached 1.3%～2% at 95Ma(late Qingshankou Fm.),the caprock of Quan-2 and Qing-1,Qing-2 Member deposited,and a large quantity of pyrolysis gas and high maturity natural gas accumulated.Now the natural gases in the reservoir are mainly dry gas.The exploratory direction in this area should strengthen the study of paleostructure and gas reservoir at the basin depression and slope.

引文

蔡希源,郑和荣.2004.陆相盆地高精度层序地层学(三),北京:地质出版社,197～254.
    陈践发,徐永昌,黄第藩.2002.塔里木盆地东部地区天然气地球化学特征及成因探讨(之一),沉积学报,18(4):606～610.
    戴金星.2003.威远气田成藏期及气源.石油实验地质,25(5):473～480.
    戴金星.卫延召,赵靖舟,2003.晚期成藏对大气田形成的重大作用,30(1):10～19.
    高瑞琪,蔡希源.1997.松辽盆地油气田形成条件与分布.北京:石油工业出版社,45～100.
    刘德汉.1995.包裹体研究——盆地流体追踪的有利工具.地学前缘,l2.(3～4):149～154.
    刘建.2004.长岭凹陷地热史模拟.天然气工业,24(1):17～19.
    任战利.1999.中国北方沉积盆地构造热演化史研究.北京:石油工业出版社,16～50.
    王璞君,杜小弟,王俊等,.1995.松辽盆地白垩纪年代地层研究及地层时代划分.地质学报,69(4):372～381.
    王庭斌.2003.中国气田的成藏特征分析.石油与天然气地质,24(2):103～110.
    吴聿元,周荔青.2007.松辽盆地主要断陷大—中型油气田形成分布特征.石油实验地质,29(3):7～12.
    俞凯,侯洪斌,郭念发.2002.松辽盆地南部断陷层石油天然气地质.北京:石油工业出版社,136～150.
    周荔青,吴聿元,张淮.2007.松辽盆地断陷层系油气成藏的分区特征.石油实验地质,29(1):7～12.
    周中毅,潘长春.1992.沉积盆地古地温测定方法及应用.广州:广州科技出版社,1～50.
    Hunt J M.1995.Petroleum Geochemistry and Geology.New York:Freeman.16～28.
    Roedder E.1984.Fluidinclusion.Reviews in Mineralogy,12.
    Sweeny J J,Burnham A K.1990.Evaluation of a si mple model ofvitrinite reflectance based on chemical kinetics.AAPG Bulletin,74(10):1559～1570.
    Waples D W.1980.Ti me and temperature in petroleumformation:Application of Loptins methodto petroleumexploration AAPG.Bulletin,64(6):916～926.