冀中坳陷东北部石炭—二叠系沉积相特征及古环境再造
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摘要
冀中坳陷石炭—二叠系是渤海湾盆地重要的产气烃源岩,也是华北油田当前主要的天然气勘探区。为了使得本区天然气的勘探取得突破性的进展,本文根据区内已钻井的岩电组合特征、岩心观察结果、沉积旋回、古生物特征及分析化验资料,并结合地震剖面解释成果,对区内石炭—二叠系的沉积体系、及沉积古环境进行了分析研究,指出了该区沉积体系发育有滨海潮坪-沼泽相、河控三角洲相和河流相三大沉积体系,其沉积环境可归纳出缓慢沉降的陆表海沉积环境、缓慢抬升的海陆过渡沉积环境和快速抬升的河流沉积环境3种类型。
Carboniferous-Permian strata in Jizhong depression constitute an important gas hydrocarbon source rock in Bohai Gulf Basin,and also serve as an main natural gas exploration area currently in the North China Oilfield.In order to achieve a breakthrough of gas exploration in the study area,the authors studied Carboniferous-Permian depositional systems and depositional paleoenvironment,on the basis of the lithologicelectric logging features,characteristics of sedimentary cycles,paleontological features,core observations and analytical and test data of drill holes,in combination with results of seismic interpretation.It is pointed out that the study area has developed three types of sedimentary systems: tidal flat-swamps,river deltas and river dominated system.The depositional environments can be classified into three types : the epicontinental sedimentary environment of slow subsidence,the paralic depositional environment of slow uplift and the fluvial environment of rapid uplift.
Carboniferous-Permian strata in Jizhong depression constitute an important gas hydrocarbon source rock in Bohai Gulf Basin,and also serve as an main natural gas exploration area currently in the North China Oilfield.In order to achieve a breakthrough of gas exploration in the study area,the authors studied Carboniferous-Permian depositional systems and depositional paleoenvironment,on the basis of the lithologicelectric logging features,characteristics of sedimentary cycles,paleontological features,core observations and analytical and test data of drill holes,in combination with results of seismic interpretation.It is pointed out that the study area has developed three types of sedimentary systems: tidal flat-swamps,river deltas and river dominated system.The depositional environments can be classified into three types : the epicontinental sedimentary environment of slow subsidence,the paralic depositional environment of slow uplift and the fluvial environment of rapid uplift.
引文
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[14]辛玮江,靳国庆,王桂苓,等.文安斜坡内带岩性地层油气藏勘探[J].特种油气藏,2008,15(5):31-341.Xin Weijiang,Jin Guoqing,Wang Guiling,et al.Lithostratigraphic reservoir exploration inside Wen`an slope[J].Special Oil and Gas Reservoirs,2008,15(5):31-341(in Chinese with English abstract).
[15]刘长江,桑树勋,陈世悦,等.渤海湾盆地石炭—二叠纪沉积作用与储层形成[J].天然气工业,2008,28(4):22-25.Liu Changjiang,Sang Shuxun,Chen Shiyue,et al.Carboniferous-Permian sedimentation and reservoiring in the Bohaiwan basin[J].Natural Gas Industry,2008,28(4):22-25(in Chinese with English abstract).
[16]陈世悦,刘焕杰.华北石炭二叠系层序地层学研究的特点[J].岩相古地理,1994,14(5):11-19.Chen Shiyue,Liu Huanjie.Carboniferous-Permian sequence stratigraphy in north China[J].Lithofacies Palaeogeography,1994,14(5):11-19(in Chinese with English abstract).
[2]梁宏斌,崔周旗,张舒亭,等.冀中坳陷东北部石炭—二叠系储层特征及勘探方向[J].中国石油勘探,2006,(6):8-14.Liang Hongbin,Cui Zhouqi,Zhang Shuting,et al.Reservoir characteristic and exploration target of Carboniferous-Permian reservoirs in Northwestern Jizhong Depression[J].China Petroleum Exporation,2006,(6):8-14(in Chinese with English abstract).
[3]金强,宋国奇,梁宏斌,等.渤海湾盆地源于石炭系—二叠系的煤成气成因特征和潜力分析[J].地质学报,2009,6(6):861-867.Jin Qiang,Song Guoqi,Liang Hongbin,et al.Characteristics of Carboniferous-Permian coal derived gas in the BoHai Bay Basin and their implication to exploration potential[J].Acta Geologicas Inica,2009,6(6):861-867(in Chinese with English abstract).
[4]李国玉,吕鸣岗,等.中国含油气盆地图集[M].北京:石油工业出版社,2002:85-86.Li Guoyu,Lv Minggang,et al.Atlas of China`s Petroliferous Basins[M].Beijing:Petroleum Industry Press,2002:85-86(in Chinese).
[5]梁生正,杨国奇,田建章,等.渤海湾叠合盆地大中型天然气田的勘探方向[J].石油学报,2001,22(6):1-4.Liang Shengzheng,Yang Guoqi,Tian Jianzhang,et al.The exploration orientation of large and medium sized natural gas pools in BoHaiWan polymerized basin[J].Acta Petroleisinica,2001,22(6):1-4(in Chinese with English abstract).
[6]杨明慧,刘池阳,杨斌谊.冀中坳陷中生代构造变形的转换及油气[J].大地构造与成矿学,2001,1(25):113-119.Yang Minghui,Liu Chiyang,Yang Binyi.Tectonic transform of the Mesozoic and their relations to hydrocarbon traps in the Jizhong(central Hebei Province)basin,China[J].Geotectonica et Metallogenia,2001,1(25):113-119(in Chinese with English abstract).
[7]刘文汇,徐永昌.天然气成因类型及判别标志[J].沉积学报,1996,14(1):110-116.Liu Wenhui,Xu Yongchang.Genetic indicators for natural gases[J].Acta Sedimentologica Sinica,1996,14(1):110-116(in Chinese with English abstract).
[8]黄金柱.油气成藏体系概述及研究方法[J].油气地质与采收率,2008,15(2):40-44.Huang Jinzhu.Concept and research methods of petroleum accumulation system[J].Petroleum Geology and Recovery Efficiency,2008,15(2):40-44(in Chinese with English abstract).
[9]冯增昭,王英华,刘焕杰,等.中国沉积学[M].北京:石油工业出版社,1994:279-290.Feng Zengzhao,Wang Yinghua,Liu Huanjie,et al.Sedimentology of China[M].Beijing:Petroleum Industry Press,1994:279-290(in Chinese).
[10]赵澄林.沉积学原理[M].北京:石油工业出版社,2001:64-73.Zhao Chenglin.Principles of Sedimentology[M].Beijing:Petroleum Industry Press,2001:64-73(in Chinese).
[11]Lv Dawei,Li Zengxue,et al.Characteristics of the Permian coal-formed gas sandstone reservoirs in Bohai Bay Basin and the adjacent areas,North China[J].Journal of Petroleum Science and Engineering,2011:516-528.
[12]Ren Jianye,Tamaki,Kensaku.Late Mesozoic and Cenozoic rifting and its dynamic setting in Eastern China and adjacent areas[J].Tectonophysics,2002,344,(3-4):175-205.
[13]胡望水,朱罗剑,杨申谷.霸县凹陷文安斜坡沙一段沉积相再认识[J].特种油气藏,2009,16(6):5-11.Hu Wangshui,Zhu Luojian,Yang Shengu.Re-understanding of Es1sedimentary facies in Wen`an slope of Baxian depression[J].Special Oil and Gas Reservoirs,2009,16(6):5-11(in Chinese with English abstract).
[14]辛玮江,靳国庆,王桂苓,等.文安斜坡内带岩性地层油气藏勘探[J].特种油气藏,2008,15(5):31-341.Xin Weijiang,Jin Guoqing,Wang Guiling,et al.Lithostratigraphic reservoir exploration inside Wen`an slope[J].Special Oil and Gas Reservoirs,2008,15(5):31-341(in Chinese with English abstract).
[15]刘长江,桑树勋,陈世悦,等.渤海湾盆地石炭—二叠纪沉积作用与储层形成[J].天然气工业,2008,28(4):22-25.Liu Changjiang,Sang Shuxun,Chen Shiyue,et al.Carboniferous-Permian sedimentation and reservoiring in the Bohaiwan basin[J].Natural Gas Industry,2008,28(4):22-25(in Chinese with English abstract).
[16]陈世悦,刘焕杰.华北石炭二叠系层序地层学研究的特点[J].岩相古地理,1994,14(5):11-19.Chen Shiyue,Liu Huanjie.Carboniferous-Permian sequence stratigraphy in north China[J].Lithofacies Palaeogeography,1994,14(5):11-19(in Chinese with English abstract).
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