渤海莱州湾凹陷南部古近系混合沉积特征及发育模式
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摘要
渤海莱州湾凹陷南部古近系沙三下亚段广泛发育陆源碎屑与碳酸盐混合沉积。通过对井壁取心、测井及综合化验资料的分析,对研究区混合沉积特征、发育模式及控制因素进行分析。结果表明:研究区既发育同一岩层内的混合沉积,又发育碳酸盐岩与陆源碎屑的互层混合沉积。混合沉积形成于两大物源注入背景下的湖泊滨岸环境,可进一步分为泥坪、砂质滩坝、浅滩和半深湖等混合沉积亚相,主要体现为波浪和湖流作用的双重影响。沙三下亚段整体呈现出水退式发育的特点,主要发育湖侵域和高位域,湖侵域主要发育半深湖混合沉积和浅滩混合沉积,高位域主要发育砂质滩坝混合沉积。混合沉积物受古地貌、古气候、古物源和湖平面变化的控制,优势储集亚相为砂质滩坝混合沉积亚相和浅滩混合沉积亚相。该研究成果不仅为莱州湾凹陷南部古近系优质动用储量研究提供了指导,而且为下一步勘探指明了方向。
Mixed clastic-carbonate deposits were widely distributed in the Lower part of Paleogene E2 s3 Formation,Laizhou Bay sag,Bohai Sea. This paper studied the characteristics,facies and development model of the mixed deposits in this area based on sidewall coring,well logging data and laboratory sample analysis. Results show that the characteristics of deposits were mixing deposited between terrigenous fragments and carbonate constituent in one layer,and interbedded strata between terrigenous fragment and carbonate in the study area. Mixed rocks developed in lacustrine shore zone with input from two large provenances,and can be further classified into the following types: Mud flat subfacies of mixed deposits,sandy beach-bar subfacies of mixed deposits,shoal subfacies of mixed deposits,and semi-deep lake subfacies of mixed deposits. The mixed deposits were both controlled by wave actions and lake currents. Ac-cording to the seismic,drilling,logging and paleontology data,it showed a regressive sequence feature for the lower part of the E2 s3 Formation which contains lacustrine transgressive system tract(mainly includes mud flat subfacies of mixed deposits and sandstone bank subfacies of mixed deposits) and highstand system tract(mainly includes bar subfacies of mixed deposits). The mixed deposits were controlled by palaeogeomorphology, palaeoclimate, palaeosource and lake level changes. The study showed that sandy beach-bar subfacies of mixed deposits and shoal subfacies of mixed deposits are dominant facies belts providing implications for researches on high-quality development reserves and direction of further exploration.
Mixed clastic-carbonate deposits were widely distributed in the Lower part of Paleogene E2 s3 Formation,Laizhou Bay sag,Bohai Sea. This paper studied the characteristics,facies and development model of the mixed deposits in this area based on sidewall coring,well logging data and laboratory sample analysis. Results show that the characteristics of deposits were mixing deposited between terrigenous fragments and carbonate constituent in one layer,and interbedded strata between terrigenous fragment and carbonate in the study area. Mixed rocks developed in lacustrine shore zone with input from two large provenances,and can be further classified into the following types: Mud flat subfacies of mixed deposits,sandy beach-bar subfacies of mixed deposits,shoal subfacies of mixed deposits,and semi-deep lake subfacies of mixed deposits. The mixed deposits were both controlled by wave actions and lake currents. Ac-cording to the seismic,drilling,logging and paleontology data,it showed a regressive sequence feature for the lower part of the E2 s3 Formation which contains lacustrine transgressive system tract(mainly includes mud flat subfacies of mixed deposits and sandstone bank subfacies of mixed deposits) and highstand system tract(mainly includes bar subfacies of mixed deposits). The mixed deposits were controlled by palaeogeomorphology, palaeoclimate, palaeosource and lake level changes. The study showed that sandy beach-bar subfacies of mixed deposits and shoal subfacies of mixed deposits are dominant facies belts providing implications for researches on high-quality development reserves and direction of further exploration.
引文
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董桂玉,陈洪德,何幼斌,秦志勇,罗进雄,辛长静.2007.陆源碎屑与碳酸盐混合沉积研究中的几点思考.地球科学进展,22(9):931-939.[Dong G Y,Chen H D,He Y B,Qing Z Y,Luo J X,Xin C J.2007.Some problems on the study of the mixed siliciclastic carbonate sediments.Advances in Earth Science,22(9):931-939]
董艳蕾,朱筱敏,滑双君,成克男,于学敏,李德江,李桂芝.2011.黄骅坳陷沙河街组一段下亚段混合沉积成因类型及演化模式.石油与天然气地质,32(1):98-107.[Dong Y L,Zhu X M,Hua SJ,Cheng K N,Yu X M,Li D J,Li G Z.2011.Genetic types and evolutionary model of mixed clastic-carbonate deposits in the lower part of the Sha-1 Formation,the Huanghua Depression.Oil&Gas Geology,32(1):98-107]
郭福生,严兆彬,杜杨松.2003.混合沉积、混积岩和混积层系的讨论.地学前缘,10(3):312-314.[Guo F S,Yan Z B,Du Y S.2003.Discussion on mixing deposit,Hunji rock and Hunji sequence.Earth Science Frontiers,10(3):312-314]
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李祥辉.2008.层序地层中的混合沉积作用及其控制因素.高校地质学报,14(3):395-404.[Li X H.2008.Mixing of siliciclasticcarbonate sediments within systems tracts of depositional sequences and its controlling factors.Geological Journal of China Universities,14(3):395-404]
李玉成,王苏民,黄耀生.1999.气候环境变化的湖泊沉积学响应.地球科学进展,14(4):412-416.[Li Y C,Wang S M,Huang Y S.1999.The lake sediments responses to environmental and climatic change.Advance in Earth Sciences,14(4):412-416]
倪军娥,孙立春,古莉,何娟,赵卫平,刘新光,郭丽娜,吴梦阳.2013.渤海海域石臼坨凸起Q油田沙二段储集层沉积模式.石油与天然气地质,34(4):491-498.[Ni J E,Sun L C,Gu L,He J,Zhao W P,Liu X G,Guo L N,Wu M Y.2013.Depositional patterns of the2nd member of the Shahejie Formation in Q Oilfield of the Shijiutuo Uplift,Bohai Sea.Oil&Gas Geology,34(4):491-498]
牛成民.2012.渤海南部海域莱州湾凹陷构造演化与油气成藏.石油与天然气地质,33(3):424-431.[Niu C M.2012.Tectonic evolution and hydrocarbon accumulation of Laizhouwan depression in southern Bohai Sea.Oil&Gas Geology,33(3):424-431]
沙庆安.2001.混合沉积和混积岩的讨论.古地理学报,3(3):65-66.[Sha Q A.2001.Discussion on mixing deposit and Hun ji Rock.Journal of Palaeogeography(Chinese Edition),3(3):65-66]
宋章强,陈延芳,刘志刚,王雪莲.2013.渤海海域沙一、二时期碳酸盐岩沉积特征及主控因素分析.沉积与特提斯地质,33(1):5-11.[Song Z Q,Chen Y F,Liu Z G,Wang X L.2013.Sedimentary characteristics and controls of the carbonate rocks during the deposition of the first and second members of the Shahejie Formation in the Bohai sea area.Sedimentary Geology and Tethyan Geology,33(1):5-11]
谭梦琪,刘自亮,沈芳,谢润成,刘成川,邓昆,徐浩.2016.四川盆地回龙地区下侏罗统自流井组大安寨段混积岩特征及模式.沉积学报,34(3):571-581.[Tan M Q,Liu Z L,Shen F,Xie R C,Liu C C,Deng K,Xu H.2016.Features and model of mixed sediments of Da'Anzhai Member in Lower Jurassic Ziliujing Formation,Huilong area,Sichuan Basin.Acta Sedimentologica Sinica,34(3):571-581]
王国忠.2001.南海北部大陆架现代礁源碳酸盐与陆源碎屑的混合沉积作用.古地理学报,3(2):47-54.[Wang G Z.2001.Mixed sedimentation of recent reefoid carbonates and terrigenous clastics in the north continental shelf of the South China sea.Journal of Palaeogeography(Chinese Edition),3(2):47-54]
王金友,张立强,张世奇,林会喜.2013.济阳坳陷沾化凹陷沙二段湖相混积岩沉积特征及成因分析:以罗家-邵家地区为例.地质论评,59(6):1085-1096.[Wang J Y,Zhang L Q,Zhang S Q,Lin H X.2013.Sedimentary characteristics and origin of lacustrine mixed rocks of the second member of the Eogene Shahejie Formation in Zhanhua sag,Jiyang Depression:Taking Luojia-Shaojia area for an example.Geological Review,59(6):1085-1096]
王启明,杜晓峰,加东辉,宛良伟.2015.渤海海域428凸起地区沙一二段沉积体系及其主控因素.沉积与特提斯地质,35(4):12-16.[Wang Q M,Du X F,Jia D H,Wan L W.2015.The 1st and2nd members of the Shahejie Formation in No.428 uplifted area,Bohai Sea:Sedimentary systems and their controlling factors.Sedimentary Geology and Tethyan Geology,35(4):12-16]
杨波,胡志伟,李果营,杨海风.2016.渤海莱州湾凹陷南部斜坡带构造特征及油气成藏规律.中国海上油气,28(5):22-29.[Yang B,Hu Z W,Li G Y,Yang H F.2016.Tectonic characteristics and hydrocarbon accumulation rules in south slope of Laizhouwan sag in Bohai sea.China Off Shore Oil and Gas,28(5):22-29]
张金亮,司学强.2007.断陷湖盆碳酸盐与陆源碎屑混合沉积:以东营凹陷金家地区古近系沙河街组第四段上亚段为例.地质论评,53(4):448-453.[Zhang J L,Si X Q.2007.Mixed siliciclastic-carbonate sediment in rift lacustrine basin:A case on the upper part of the Fourth Member of the Eocene Shahejie Formation in Jinjia area,Dongying Depression.Geological Review,53(4):448-453]
张锦泉,叶红专.1989.论碳酸盐与陆源碎屑的混合沉积.成都地质学院学报,16(2):89-92.[Zhang J Q,Ye H Z.1989.A study on carbonate and silicilastic mixed sediments.Journal of Chengdu University of Technology,16(2):89-92]
张雄华.2000.混积岩的分类和成因.地质科技情报,19(4):31-34.[Zhang X H.2000.Classification and origin of mix sediment.Geological Science and Technology Information,19(4):31-34]
赵灿,李旭兵,郇金来,于玉帅.2013.碳酸盐与硅质碎屑的混合沉积机理和控制因素探讨.地质论评,59(4):615-626.[Zhao C,Li X B,Huan J L,Yu Y S.2013.Mechanism of mixied siliciclastic-carbonate sediments and its controlling factors.Geological Review,59(4):615-626]
Aqrawi A A M.1996.Carbonate-siliciclastic sediments of the Upper Cretaceous(Khasib,Tanuma and sa'di Formations)of the Mesopotamian Basin.Marine and Petroleum Geology,13(7):781-790.
Coffey B P,Read J F.2004.Mixed carbonate-siliciclastic sequence stratigraphy of a Paleogene transition zone continental shelf,southeastern USA.Sedimentary Geology,166:21-57.
Dolyle L J,Roberts H H.1988.Carbonate-clastic transitions.Development in Sedimentology,42:304.
Dorsey R J,Kidwell S M.1999.Mixed carbonate-siliciclastic sedimentation on a tectonically active margin.The Journal of Geology,34:165-179.
Halfar J,Ingle J C,Godinez-Orta L.2004.Modern non-tropical mixed carbonate-siliciclastic sediments and environments of the southwestern Gulf of California,Mexico.Sedimentary Geology,165:93-115.
Mount J F.1984.Mixing of silicilastics and carbonate sediments in shallow shelf environments.Geology,12(7):432-435.
Parcell W C,Williams M K.2005.Mixed sediment deposition in a retroarc foreland basin:Lower Ellis Group(M.Jurassic),Wyoming and Montana U.S.A.Sedimentary Geology,177:175-194.
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蔡进功,李从先.1994.内蒙古西南部石炭系碎屑岩-碳酸盐岩混合沉积特征.石油与天然气地质,15(1):80-86.[Cai J G,Li CX.1994.Characteristics of canbonferous mixed siliciclastic and carbonate sediments in southwest Inner Mongolia.Oil&Gas Geology,15(1):80-86]
董桂玉,陈洪德,何幼斌,秦志勇,罗进雄,辛长静.2007.陆源碎屑与碳酸盐混合沉积研究中的几点思考.地球科学进展,22(9):931-939.[Dong G Y,Chen H D,He Y B,Qing Z Y,Luo J X,Xin C J.2007.Some problems on the study of the mixed siliciclastic carbonate sediments.Advances in Earth Science,22(9):931-939]
董艳蕾,朱筱敏,滑双君,成克男,于学敏,李德江,李桂芝.2011.黄骅坳陷沙河街组一段下亚段混合沉积成因类型及演化模式.石油与天然气地质,32(1):98-107.[Dong Y L,Zhu X M,Hua SJ,Cheng K N,Yu X M,Li D J,Li G Z.2011.Genetic types and evolutionary model of mixed clastic-carbonate deposits in the lower part of the Sha-1 Formation,the Huanghua Depression.Oil&Gas Geology,32(1):98-107]
郭福生,严兆彬,杜杨松.2003.混合沉积、混积岩和混积层系的讨论.地学前缘,10(3):312-314.[Guo F S,Yan Z B,Du Y S.2003.Discussion on mixing deposit,Hunji rock and Hunji sequence.Earth Science Frontiers,10(3):312-314]
江茂生,沙庆安.1995.碳酸盐与陆源碎屑混合沉积体系研究进展.地球科学进展,10(6):551-554.[Jiang M S,Sha Q A.1995.Research advances in the mixed siliciclastic-carbonate sedimentary systems.Advances in Earth Science,10(6):551-554]
李祥辉,刘文均,郑荣才.1997.龙门山地区泥盆纪碳酸盐与硅质碎屑的混积相与混积机理.岩相古地理,17(3):1-10.[Li X H,Liu W J,Zheng R C.1997.Hybrid facies and mechanism for the formation of the mixed Devonian carbonate siliciclastic sediments in the Longmen Mountain area,Sichuan.Sedimentary Facies and Palaeogeography,17(3):1-10]
李祥辉.2008.层序地层中的混合沉积作用及其控制因素.高校地质学报,14(3):395-404.[Li X H.2008.Mixing of siliciclasticcarbonate sediments within systems tracts of depositional sequences and its controlling factors.Geological Journal of China Universities,14(3):395-404]
李玉成,王苏民,黄耀生.1999.气候环境变化的湖泊沉积学响应.地球科学进展,14(4):412-416.[Li Y C,Wang S M,Huang Y S.1999.The lake sediments responses to environmental and climatic change.Advance in Earth Sciences,14(4):412-416]
倪军娥,孙立春,古莉,何娟,赵卫平,刘新光,郭丽娜,吴梦阳.2013.渤海海域石臼坨凸起Q油田沙二段储集层沉积模式.石油与天然气地质,34(4):491-498.[Ni J E,Sun L C,Gu L,He J,Zhao W P,Liu X G,Guo L N,Wu M Y.2013.Depositional patterns of the2nd member of the Shahejie Formation in Q Oilfield of the Shijiutuo Uplift,Bohai Sea.Oil&Gas Geology,34(4):491-498]
牛成民.2012.渤海南部海域莱州湾凹陷构造演化与油气成藏.石油与天然气地质,33(3):424-431.[Niu C M.2012.Tectonic evolution and hydrocarbon accumulation of Laizhouwan depression in southern Bohai Sea.Oil&Gas Geology,33(3):424-431]
沙庆安.2001.混合沉积和混积岩的讨论.古地理学报,3(3):65-66.[Sha Q A.2001.Discussion on mixing deposit and Hun ji Rock.Journal of Palaeogeography(Chinese Edition),3(3):65-66]
宋章强,陈延芳,刘志刚,王雪莲.2013.渤海海域沙一、二时期碳酸盐岩沉积特征及主控因素分析.沉积与特提斯地质,33(1):5-11.[Song Z Q,Chen Y F,Liu Z G,Wang X L.2013.Sedimentary characteristics and controls of the carbonate rocks during the deposition of the first and second members of the Shahejie Formation in the Bohai sea area.Sedimentary Geology and Tethyan Geology,33(1):5-11]
谭梦琪,刘自亮,沈芳,谢润成,刘成川,邓昆,徐浩.2016.四川盆地回龙地区下侏罗统自流井组大安寨段混积岩特征及模式.沉积学报,34(3):571-581.[Tan M Q,Liu Z L,Shen F,Xie R C,Liu C C,Deng K,Xu H.2016.Features and model of mixed sediments of Da'Anzhai Member in Lower Jurassic Ziliujing Formation,Huilong area,Sichuan Basin.Acta Sedimentologica Sinica,34(3):571-581]
王国忠.2001.南海北部大陆架现代礁源碳酸盐与陆源碎屑的混合沉积作用.古地理学报,3(2):47-54.[Wang G Z.2001.Mixed sedimentation of recent reefoid carbonates and terrigenous clastics in the north continental shelf of the South China sea.Journal of Palaeogeography(Chinese Edition),3(2):47-54]
王金友,张立强,张世奇,林会喜.2013.济阳坳陷沾化凹陷沙二段湖相混积岩沉积特征及成因分析:以罗家-邵家地区为例.地质论评,59(6):1085-1096.[Wang J Y,Zhang L Q,Zhang S Q,Lin H X.2013.Sedimentary characteristics and origin of lacustrine mixed rocks of the second member of the Eogene Shahejie Formation in Zhanhua sag,Jiyang Depression:Taking Luojia-Shaojia area for an example.Geological Review,59(6):1085-1096]
王启明,杜晓峰,加东辉,宛良伟.2015.渤海海域428凸起地区沙一二段沉积体系及其主控因素.沉积与特提斯地质,35(4):12-16.[Wang Q M,Du X F,Jia D H,Wan L W.2015.The 1st and2nd members of the Shahejie Formation in No.428 uplifted area,Bohai Sea:Sedimentary systems and their controlling factors.Sedimentary Geology and Tethyan Geology,35(4):12-16]
杨波,胡志伟,李果营,杨海风.2016.渤海莱州湾凹陷南部斜坡带构造特征及油气成藏规律.中国海上油气,28(5):22-29.[Yang B,Hu Z W,Li G Y,Yang H F.2016.Tectonic characteristics and hydrocarbon accumulation rules in south slope of Laizhouwan sag in Bohai sea.China Off Shore Oil and Gas,28(5):22-29]
张金亮,司学强.2007.断陷湖盆碳酸盐与陆源碎屑混合沉积:以东营凹陷金家地区古近系沙河街组第四段上亚段为例.地质论评,53(4):448-453.[Zhang J L,Si X Q.2007.Mixed siliciclastic-carbonate sediment in rift lacustrine basin:A case on the upper part of the Fourth Member of the Eocene Shahejie Formation in Jinjia area,Dongying Depression.Geological Review,53(4):448-453]
张锦泉,叶红专.1989.论碳酸盐与陆源碎屑的混合沉积.成都地质学院学报,16(2):89-92.[Zhang J Q,Ye H Z.1989.A study on carbonate and silicilastic mixed sediments.Journal of Chengdu University of Technology,16(2):89-92]
张雄华.2000.混积岩的分类和成因.地质科技情报,19(4):31-34.[Zhang X H.2000.Classification and origin of mix sediment.Geological Science and Technology Information,19(4):31-34]
赵灿,李旭兵,郇金来,于玉帅.2013.碳酸盐与硅质碎屑的混合沉积机理和控制因素探讨.地质论评,59(4):615-626.[Zhao C,Li X B,Huan J L,Yu Y S.2013.Mechanism of mixied siliciclastic-carbonate sediments and its controlling factors.Geological Review,59(4):615-626]
Aqrawi A A M.1996.Carbonate-siliciclastic sediments of the Upper Cretaceous(Khasib,Tanuma and sa'di Formations)of the Mesopotamian Basin.Marine and Petroleum Geology,13(7):781-790.
Coffey B P,Read J F.2004.Mixed carbonate-siliciclastic sequence stratigraphy of a Paleogene transition zone continental shelf,southeastern USA.Sedimentary Geology,166:21-57.
Dolyle L J,Roberts H H.1988.Carbonate-clastic transitions.Development in Sedimentology,42:304.
Dorsey R J,Kidwell S M.1999.Mixed carbonate-siliciclastic sedimentation on a tectonically active margin.The Journal of Geology,34:165-179.
Halfar J,Ingle J C,Godinez-Orta L.2004.Modern non-tropical mixed carbonate-siliciclastic sediments and environments of the southwestern Gulf of California,Mexico.Sedimentary Geology,165:93-115.
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