北黄海盆地东部坳陷西北区新近系河道—扇体沉积体系识别
|
摘要
以沉积学基本原理为指导,借助三维地震资料,综合相干技术和属性提取技术对北黄海盆地东部坳陷西北区的沉积体进行了识别。精细刻画了新近系底部砾岩之上河道—扇体沉积体系的平面及剖面特征,从而建立了河道—扇体沉积古环境展布图。研究表明:河道—扇体沉积期,来自西北部的物源在研究区的平缓地势下持续演化形成了稳定曲流河。河道上游下切深度大、侧向迁移不明显;中游下切深度小、侧向迁移距离大,点坝及废弃河道等发育;下游段单河道变为两个或多个并置,主河道数增加。河流的末端逐渐向片流转化从而堆积形成了类似末端扇的沉积。该河流—扇体沉积体系的发现,证明研究区存在持续一定时间的暴露性沉积间断,沉积古环境由原地或近原地堆积的近源冲积沉积转变为典型的远源曲流河道—扇体沉积,为今后环境地质研究提供佐证。
The Neogene sequence in the northwest block of the Eastern Depression of the North Yellow Sea Basin are studied based on high-resolution 3Dseismic data,using the coherence and attribution extracting approach.A channel-fan system above the Neogene basal conglomerate is recognized.It was a meandering river system carrying detrital sediments from northwest upon a relatively gentle geomorphology.In the upper reach of the river,the river channel was deeply incised with little lateral migration.In the middle reach of the river,however,the incision was gentle and there was distinctive lateral migration.Point-bars and abandoned channels were well developed.In the lower reach,single channel turned into juxtaposed dual or multiple channels.At the end of the river,it became a kind of sheet flow and formed the deposits similar to a terminal fan.It suggests that the area was exposed to air for a substantial span of time,and changed from proximal alluvial deposits to a distal typical meandering river-fan deposits.
The Neogene sequence in the northwest block of the Eastern Depression of the North Yellow Sea Basin are studied based on high-resolution 3Dseismic data,using the coherence and attribution extracting approach.A channel-fan system above the Neogene basal conglomerate is recognized.It was a meandering river system carrying detrital sediments from northwest upon a relatively gentle geomorphology.In the upper reach of the river,the river channel was deeply incised with little lateral migration.In the middle reach of the river,however,the incision was gentle and there was distinctive lateral migration.Point-bars and abandoned channels were well developed.In the lower reach,single channel turned into juxtaposed dual or multiple channels.At the end of the river,it became a kind of sheet flow and formed the deposits similar to a terminal fan.It suggests that the area was exposed to air for a substantial span of time,and changed from proximal alluvial deposits to a distal typical meandering river-fan deposits.
引文
[1]Galloway W E,Hobday W K.Terrigenous Clastic Depositional Systems:Applications to Fossil Fuel and Groundwater Resources[M].New York:Springer Verlag,1996:1-40.
[2]Zeng H L,Backus M M,Barrow K T,et al.Stratal slicing,part I:realistic 3Dseismic model,and part II:real seismic data[J].Geophysics,1998,63(2):502-522.
[3]Posamentier H W,V Kolla.Seismic geomorphology and stratigraphy of depositional elements in deepwater settings[J].Joural of Sedimentary Research,2003,73(3):367-388.
[4]蔡乾忠.横贯黄海的中朝造山带与北、南黄海成盆成烃关系[J].石油与天然气地质,2005,26(2):185-196.
[5]刘振湖,高红芳,胡小强,等.北黄海盆地东部拗陷中生界含油气系统研究[J].中国海上油气地质,2007,19(4):229-233.
[6]王后金,王嘹亮,冯常茂.北黄海盆地的成盆动力学机制探讨[J].石油天然气学报(江汉石油学院学报),2014,36(5):1-7.
[7]张军华,周振晓,谭明友,等.地震切片解释中的几个理论问题[J].石油地球物理勘探,2007,42(3):348-352.
[8]刘丽薇,郝兴国,赵伟,等.多属性分析技术在薄互层条件下识别古河道的应用[J].大庆石油学院学报,2006,30(4):4-7.
[9]赵爽,李仲东,许红梅.分频解释技术及其在陆相砂岩地层地震勘探中的应用分析[J].矿物岩石,2006,26(2):106-110.
[10]张凤莲,曹国银,李玉清,等.地震属性分析技术在松辽北徐东地区火山岩裂缝中的应用[J].大庆石油学院学报,2007,31(2):12-14.
[11]Posamentier H,Ole M.The character and genesis of mass transport complexes:Geomorphology and process sedimentology from 3Dseismic data[R].Houston:AAPG Annual Convention,2004:11-24.
[12]Kolla V,Posamentier H W,Wood L J.Deep-water and fluvial sinuous channels-Characteristics,similarities and dissimilarities,and modes of formation[J].Marine and Petroleum Geology,2007,24:388-405.
[13]张春生,刘忠保,施东.高弯曲与低弯曲河流比较沉积学研究[J].沉积学报,2000,18(2):227-233.
[14]Rosgen D L.A classification of natural rivers[J].Catena,1994,22(3):169-199.
[15]姜华,汪泽成,王华,等.地震沉积学在塔北哈拉哈塘地区古河道识别中的应用[J].中南大学学报:自然科学版,2011,42(12):3 804-3 810.
[16]夏玉梅,汪佩芳.松嫩平原晚第三纪一更新世抱粉组合及古植被与古气候的研究[J].古地理学报,1987,42(2):165-178.
[17]大港油田石油地质志编辑委员会.中国石油地质志(卷四)[M].北京:石油工业出版社,1991:48-49.
[18]汤良杰,金之钧.多期叠合盆地油气运聚模式[J].石油大学学报:自然科学版,2002,24(4):67-70.
[19]张金亮,戴朝强,张晓华.末端扇——在中国被忽略的一种沉积作用类型[J].地质论评,2007,53(2):170-179.
[2]Zeng H L,Backus M M,Barrow K T,et al.Stratal slicing,part I:realistic 3Dseismic model,and part II:real seismic data[J].Geophysics,1998,63(2):502-522.
[3]Posamentier H W,V Kolla.Seismic geomorphology and stratigraphy of depositional elements in deepwater settings[J].Joural of Sedimentary Research,2003,73(3):367-388.
[4]蔡乾忠.横贯黄海的中朝造山带与北、南黄海成盆成烃关系[J].石油与天然气地质,2005,26(2):185-196.
[5]刘振湖,高红芳,胡小强,等.北黄海盆地东部拗陷中生界含油气系统研究[J].中国海上油气地质,2007,19(4):229-233.
[6]王后金,王嘹亮,冯常茂.北黄海盆地的成盆动力学机制探讨[J].石油天然气学报(江汉石油学院学报),2014,36(5):1-7.
[7]张军华,周振晓,谭明友,等.地震切片解释中的几个理论问题[J].石油地球物理勘探,2007,42(3):348-352.
[8]刘丽薇,郝兴国,赵伟,等.多属性分析技术在薄互层条件下识别古河道的应用[J].大庆石油学院学报,2006,30(4):4-7.
[9]赵爽,李仲东,许红梅.分频解释技术及其在陆相砂岩地层地震勘探中的应用分析[J].矿物岩石,2006,26(2):106-110.
[10]张凤莲,曹国银,李玉清,等.地震属性分析技术在松辽北徐东地区火山岩裂缝中的应用[J].大庆石油学院学报,2007,31(2):12-14.
[11]Posamentier H,Ole M.The character and genesis of mass transport complexes:Geomorphology and process sedimentology from 3Dseismic data[R].Houston:AAPG Annual Convention,2004:11-24.
[12]Kolla V,Posamentier H W,Wood L J.Deep-water and fluvial sinuous channels-Characteristics,similarities and dissimilarities,and modes of formation[J].Marine and Petroleum Geology,2007,24:388-405.
[13]张春生,刘忠保,施东.高弯曲与低弯曲河流比较沉积学研究[J].沉积学报,2000,18(2):227-233.
[14]Rosgen D L.A classification of natural rivers[J].Catena,1994,22(3):169-199.
[15]姜华,汪泽成,王华,等.地震沉积学在塔北哈拉哈塘地区古河道识别中的应用[J].中南大学学报:自然科学版,2011,42(12):3 804-3 810.
[16]夏玉梅,汪佩芳.松嫩平原晚第三纪一更新世抱粉组合及古植被与古气候的研究[J].古地理学报,1987,42(2):165-178.
[17]大港油田石油地质志编辑委员会.中国石油地质志(卷四)[M].北京:石油工业出版社,1991:48-49.
[18]汤良杰,金之钧.多期叠合盆地油气运聚模式[J].石油大学学报:自然科学版,2002,24(4):67-70.
[19]张金亮,戴朝强,张晓华.末端扇——在中国被忽略的一种沉积作用类型[J].地质论评,2007,53(2):170-179.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心