琼东南华光凹陷深水重力搬运沉积体系及其油气勘探
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摘要
重力搬运沉积作用形成的岩性地层圈闭对深水油气勘探具有非常重要的作用.为弄清琼东南盆地华光凹陷重力搬运沉积特征,基于近年新采集的地震资料和经典层序地层模式,开展了该区的深水沉积特征研究.南海西北部深水区重力搬运沉积特征发育,主要包括中新统三亚组发育的复合水道、上新统变形滑坡体及第四系深水浊积水道.三亚组复合水道具有典型的强弱振幅相互叠置特征,上新统变形滑坡体具有典型的下部变形、上部滑坡的双层结构,第四系深水浊积水道具有典型的侧向迁移、分支水道等特征.这些沉积特征的形成与越南隆起的物源供给有关.复合水道充填可作为潜在的深水储层,滑塌体的形成可能与天然气水合物的形成或解体有关.
The stratigraphic trap formation by mass transport deposition(MTD) in the deepwater area is very important for the deepwater exploration and production.Based on the new seismic data acquired recently and classic sequence stratigraphy theory,we study the deepwater deposition characteristics of Huaguang depression,Qiongdongnan basin.The sedimentary features relates with MTD develop since Miocene,including channel complex developed in Miocene Sanya Formation,Pliocene deformation slide layer and Quaternary deepwater turbidite channels.The Miocene channel complex has typical shingle structure of high amplitude and low amplitude reflection;the Pliocene deformation slide layer has typical deformation feature of lower part and slide of upper part;the Quaternary deepwater turbidite channels have typical lateral migration and bifurcation.These sediment phenomena are related with the sediment supply from the Vietnam uplift.The channel complex in Sanya Formation could be the potential reservoir of the slope deepwater area,and the formation of deformation slide layer may be related with the gas hydrate.
The stratigraphic trap formation by mass transport deposition(MTD) in the deepwater area is very important for the deepwater exploration and production.Based on the new seismic data acquired recently and classic sequence stratigraphy theory,we study the deepwater deposition characteristics of Huaguang depression,Qiongdongnan basin.The sedimentary features relates with MTD develop since Miocene,including channel complex developed in Miocene Sanya Formation,Pliocene deformation slide layer and Quaternary deepwater turbidite channels.The Miocene channel complex has typical shingle structure of high amplitude and low amplitude reflection;the Pliocene deformation slide layer has typical deformation feature of lower part and slide of upper part;the Quaternary deepwater turbidite channels have typical lateral migration and bifurcation.These sediment phenomena are related with the sediment supply from the Vietnam uplift.The channel complex in Sanya Formation could be the potential reservoir of the slope deepwater area,and the formation of deformation slide layer may be related with the gas hydrate.
引文
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Xie,X.N.,Mller,R.D.,Li,S.T.,et al.,2006.Origin ofanomalous subsidence along the northern South ChinaSea margin and its relationship to dynamic topography.Marine and Petroleum Geology,23(7):745-765.
Yao,G.S.,Yuan,S.Q.,Wu,S.G.,et al.,2008.The double provenance supply depositional model and its exlpora-tion prospect in the deepwater of Qiongdongnan basin.PetroleumExploration and Development,35(6):685-691(in Chinese with English abstract).
Yuan,S.Q.,Yao,G.H.,Lu,F.L.,et al.,2009.Features ofLate Cenozoic deepwater sedi mentation in southernQiongdongnan basin,northwestern South China sea.Journal of Earth Science,20(1):172-179.
龚再升,杨甲明,郝芳,等,2001.莺歌海盆地与琼东南盆地成藏条件的比较及天然气勘探方向.地球科学——中国地质大学学报,26(3):286-290.
庞雄,陈长民,朱明,等,2007.深水沉积研究前缘问题.地质论评,53(1):36-43.
王华,陆永潮,廖远涛,等,2004.琼东南盆地中东部三亚组层序构成及有利区带预测.地球科学——中国地质大学学报,29(5):609-614.
王海荣,2007.南海北部大陆边缘深水沉积过程-响应及其主控因素(博士论文).北京:中国石油大学,82-97.
魏魁生,崔旱云,叶淑芬,等,2001.琼东南盆地高精度层序地层学研究.地球科学——中国地质大学学报,26(1):59-66.
吴时国,姚根顺,董冬冬,等,2008.南海北部陆坡大型气田区天然气水合物的成藏地质构造特征.石油学报,29(3):324-328.
姚根顺,袁圣强,吴时国,等,2008.琼东南盆地深水区双物源沉积模式及勘探前景.石油勘探与开发,35(6):685-691.
Deptuck,M.E.,Steffens,G.S.,Barton,M.,et al.,2003.Ar-chitecture and evolution of upper fan channel-belts onthe Niger Delta slope and in the Arabian Sea.Marineand Petroleum Geology,20(6-8):649-676.
Deptuck,M.E.,Sylvester,Z.,Pirmez,C.,et al.,2007.Mi-gration-aggradation history and3Dseismic geomorphol-ogy of submarine channels in the Pleistocene Benin-ma-jor Canyon,western Niger Delta slope.Marine and Pe-troleum Geology,24:406-433.
Fyhn,M.B.W.,Nielsen,L.H.,Boldreel,L.O.,et al.,2007.Geological evolution,regional perspectives andhydrocarbon potential of the northwest Phu Khanh ba-sin,offshore Central Vietnam.Marine and PetroleumGeology,DOI:10.1016/j.marpetgeo.2007.07.01
Gong,Z.S.,Yang,J.M.,Hao,F.,et al.,2001.Difference innatural gas accumulation conditions between Yinggehaiand Qiongdongnan basins and its i mplications for natu-ral gas exploration.Earth Science—Journal of ChinaUniversity of Geosciences,26(3):286-290(in Chinesewith English abstract).
Haflidason,H.,Sejrup,H.P.,Nygard,A.,et al.,2004.Thestoregga slide:Architecture,geometry and slide devel-opment.Marine Geology,213:201-234.
Kolla,V.,Posamentier,H.W.,Wood,L.J.,2007.Deep-wa-ter and fluvial sinuous channels—Characteristics,si mi-larities and dissi milarities,and modes of formation.Ma-rine and Petroleum Geology,24:388-405.
Mc Hugh,C.M.G.,Damuth,J.E.,Mountain,G.S.,2002.Cenozoic mass-transport facies and their correlationwith relative sea-level change,New Jersey continentalmargin.Marine Geology,184(3-4):295-334.
Navarre,J.C.,Claude,D.,Liberelle,E.,et al.,2002.Deep-water turbidite system analysis,West Africa:Sedi men-tary model and i mplications for reservoir model con-struction.Leading Edge(Tulsa,OK),21(11):1132-1139.
Pang,X.,Chen,C.M.,Zhu,M.,et al.,2007.Frontier of thedeep-water deposition study.Geological Review,53(1):36-43(in Chinese with English abstract).
Pettingill,H.S.,Wei mer,P.,2002.World-wide deep waterexploration and production:Past,present,and future.Leading Edge(Tulsa,OK),21(4):371-376.
Popescu,I.,Lericolais,G.,Panin,N.,et al.,2001.Late Qua-ternary channel avulsions on the Danube deep-sea fan.Marine Geology,179(1-2):25-37.
Schwab,A.M.,Cronin,B.T.,Ferreira,H.,2007.Seismicexpression of channel outcrops:Offset stacked versusamalgamated channel systems.Marine and PetroleumGeology,24:504-514.
Shanmugam,G.,2000.50years of the turbidite paradigm(1950s-1990s)deep-water processes and facies mod-els:Acritical perspective.Marine and Petroleum Geolo-gy,17(2):285-342.
Shanmugam,G.,2002.Ten turbidite myths.Earth-ScienceReviews,58(3-4):311-341.
Sultan,N.,Voisset,M.,Marsset,B.,et al.,2007.Potentialrole of compressional structures in generating subma-rine slope failures in the Niger Delta.Marine Geology,237(3-4):169-190.
Wang,H.,Lu,Y.C.,Liao,Y.T.,et al.,2004.Sequence archi-tecture and favorable reservoir prediction of Sanya Forma-tionin the central and eastern Qiongdongnan basin.EarthScience—Journal of China University of Geosciences,29(5):609-614(in Chinese with English abstract).
Wang,H.R.,2007.Sedi mentation processes and its responsein deep-water environment of the northern continentalmargin,the South China sea[Dissertation].PetroleumUniversity of China,Beijing,82-97(in Chinese).
Wei,K.S.,Cui,H.Y.,Ye,S.F.,et al.,2001.High-precisionsequence stratigraphy in Qiongdongnan basin.EarthScience—Journal of China University of Geosciences,26(1):59-66(in Chinese with English abstract).
Wu,S.,Wong,H.K.,Ludmann,T.,1999.Gravity-drivensedi mentation on the northwest continental slope inSouth China sea:Results from high-resolution seismicdata and piston cores.Chinese Journal of Oceanologyand Li mnology,17(2):155-169.
Wu,S.G.,Takahashi,N.,Tokuyama,H.,et al.,2005.Geo-morphology,sedi mentary processes and development ofthe Zenisu deep-sea channel,Northern Philippine Sea.Geo-Marine Letters,25(2):230-240.
Wu,S.G.,Yao,G.S.,Dong,D.D.,et al.,2008.Geologicalstructures for forming gas hydrate reservoir in the hugedeepwater gas field,northern South China sea.Acta Petro-lei Sinica,29(3):324-328(in Chinese with English ab-stract).
Xie,X.N.,Mller,R.D.,Li,S.T.,et al.,2006.Origin ofanomalous subsidence along the northern South ChinaSea margin and its relationship to dynamic topography.Marine and Petroleum Geology,23(7):745-765.
Yao,G.S.,Yuan,S.Q.,Wu,S.G.,et al.,2008.The double provenance supply depositional model and its exlpora-tion prospect in the deepwater of Qiongdongnan basin.PetroleumExploration and Development,35(6):685-691(in Chinese with English abstract).
Yuan,S.Q.,Yao,G.H.,Lu,F.L.,et al.,2009.Features ofLate Cenozoic deepwater sedi mentation in southernQiongdongnan basin,northwestern South China sea.Journal of Earth Science,20(1):172-179.
龚再升,杨甲明,郝芳,等,2001.莺歌海盆地与琼东南盆地成藏条件的比较及天然气勘探方向.地球科学——中国地质大学学报,26(3):286-290.
庞雄,陈长民,朱明,等,2007.深水沉积研究前缘问题.地质论评,53(1):36-43.
王华,陆永潮,廖远涛,等,2004.琼东南盆地中东部三亚组层序构成及有利区带预测.地球科学——中国地质大学学报,29(5):609-614.
王海荣,2007.南海北部大陆边缘深水沉积过程-响应及其主控因素(博士论文).北京:中国石油大学,82-97.
魏魁生,崔旱云,叶淑芬,等,2001.琼东南盆地高精度层序地层学研究.地球科学——中国地质大学学报,26(1):59-66.
吴时国,姚根顺,董冬冬,等,2008.南海北部陆坡大型气田区天然气水合物的成藏地质构造特征.石油学报,29(3):324-328.
姚根顺,袁圣强,吴时国,等,2008.琼东南盆地深水区双物源沉积模式及勘探前景.石油勘探与开发,35(6):685-691.
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