主动大陆边缘海沟-斜坡盆地沉积体系分析——以缅甸若开海岸盆地某工区为例
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摘要
本文以国内少见的发育在主动大陆边缘的特殊盆地类型海沟-斜坡盆地作为研究对象,通过建立井震结合的不同沉积体系的地质-地球物理识别模板,用二维地震资料对研究区目的层的沉积体系进行了解析。结果显示,研究区发育窄的滨浅海、小规模的三角洲、浊积扇、下切谷、半深海陆坡和半深海平原等沉积体系。滨浅海、三角洲和浊积扇沉积体系发育的砂体是主要的储集体。海沟-斜坡盆地的规模较小,以生气为主,可能形成中小型断块油气藏。
The sedimentary systems are explored on the basis of 2D seismic data for the target strata in one block in the Arakan Coast basin,Myanmar developed in the trench-slope basins along the active continental margin.The results of research in this study have disclosed that the sedimentary stsyems in the study area dominantly consist of the littoral-shallow sea,delta,turbidite fan,incised valley,bathyal continental slope and bathyal plain sedimentary systems.The reservoir rocks are mainly developed in the littoral-shallow sea,delta and turbidite fan sedimentary systems.The small-sized trench-slope basins may be host to the medium-or small-sized block oil-gas pools dominated by natural gas.
The sedimentary systems are explored on the basis of 2D seismic data for the target strata in one block in the Arakan Coast basin,Myanmar developed in the trench-slope basins along the active continental margin.The results of research in this study have disclosed that the sedimentary stsyems in the study area dominantly consist of the littoral-shallow sea,delta,turbidite fan,incised valley,bathyal continental slope and bathyal plain sedimentary systems.The reservoir rocks are mainly developed in the littoral-shallow sea,delta and turbidite fan sedimentary systems.The small-sized trench-slope basins may be host to the medium-or small-sized block oil-gas pools dominated by natural gas.
引文
[1]MIALL A D.Principles of Sedimentary Basin Analysis[M].NewYork:Springer-Verlag,1984.371.
[3]DICKINSON W R,SEELY D R.Structure and stratigraphy of fore-arc regions[J].American Association of Petroleum GeologistsBulletin,1977,63:2-31.
[4]陆克政等编,《含油气盆地分析》[M],北京:中国石油出版社,2006.
[5]PIVNIK D A.Polyphase deformation in a froe-arc/back-arc basinSalin subbsin,Myanmar(Burma)[J].AAPG Bulletin,1998,82(10):1837-1856.
[6]SLEEP N,TOKSOZ M N.Evolution of marginal basins[J].Nature,1973,233:548-500.
[7]CURRAY J R.Tectonics and history of the Andaman Sea region[J].Journal of Asian Earth Sciences,2005,25:187-232.
[8]DICKINSON W R.Forearc basins[A].Busby C J,Ingersoll R V.Tectonics of Sedimentary Basins[C].Cambridge Massachusetts:Blackwell Science,1995.211-261.
[9]周树青,黄海平,林畅松,等.环太平洋活动大陆边缘盆地类型及油气成藏条件[J].海洋石油,2006,26(4):13-17.
[10]张传恒,张世红.弧前盆地研究进展综述[J].地质科技情报,1998,17(4):1-6.
[11]KOCYIGIT A.An example of an accretionary forearc basin fromnorthern central Anatolia and its implications for the history ofsubduction of Neo-Tethys in Turkey[J].Geol.Soc.Am.Bull.,1991,103:22-36.
[12]LEGGETT J K.The sedimentological evolution of a Lower Paleozoicaccretionary forearc in the Southern Upland of Scotland[J].Sedimentology,1980,27:401-417.
[13]MOORE G F,KARIG D E.Development of sedimentary basins onthe lower trench slope[J].Geology,1976,4:693-697.
[14]ALAM M.Geology and depositional history of Cenozoic sedimentsof the Bengal Basin of Bangladesh[J].Palaeogeography,Palaeoclimatology,Palaeoecology,1989,69:25-139.
[15]MOLNAR P,TAPPONNIER P.Cenozoic tectonics of Asia:effectsof a continental collision[J].Science,1975,189:419-426.
[16]SCLATER J G,FISHER R L.The evolution of the east centralIndian Ocean,with emphasis on the tectonic setting of theNinetyeast Ridge[J].Geological Society of America Bulletin,1974,85:683-702.
[17]CHEN H H,DOBSON J,HELLER F et al.Paleomagnetic evidencefor clockwise rotation of the Simao region since the Cretaceous-aconsequence of India-Asia collision[J].Earth Planet.Sci.Lett.,1995,134:203-217.
[3]DICKINSON W R,SEELY D R.Structure and stratigraphy of fore-arc regions[J].American Association of Petroleum GeologistsBulletin,1977,63:2-31.
[4]陆克政等编,《含油气盆地分析》[M],北京:中国石油出版社,2006.
[5]PIVNIK D A.Polyphase deformation in a froe-arc/back-arc basinSalin subbsin,Myanmar(Burma)[J].AAPG Bulletin,1998,82(10):1837-1856.
[6]SLEEP N,TOKSOZ M N.Evolution of marginal basins[J].Nature,1973,233:548-500.
[7]CURRAY J R.Tectonics and history of the Andaman Sea region[J].Journal of Asian Earth Sciences,2005,25:187-232.
[8]DICKINSON W R.Forearc basins[A].Busby C J,Ingersoll R V.Tectonics of Sedimentary Basins[C].Cambridge Massachusetts:Blackwell Science,1995.211-261.
[9]周树青,黄海平,林畅松,等.环太平洋活动大陆边缘盆地类型及油气成藏条件[J].海洋石油,2006,26(4):13-17.
[10]张传恒,张世红.弧前盆地研究进展综述[J].地质科技情报,1998,17(4):1-6.
[11]KOCYIGIT A.An example of an accretionary forearc basin fromnorthern central Anatolia and its implications for the history ofsubduction of Neo-Tethys in Turkey[J].Geol.Soc.Am.Bull.,1991,103:22-36.
[12]LEGGETT J K.The sedimentological evolution of a Lower Paleozoicaccretionary forearc in the Southern Upland of Scotland[J].Sedimentology,1980,27:401-417.
[13]MOORE G F,KARIG D E.Development of sedimentary basins onthe lower trench slope[J].Geology,1976,4:693-697.
[14]ALAM M.Geology and depositional history of Cenozoic sedimentsof the Bengal Basin of Bangladesh[J].Palaeogeography,Palaeoclimatology,Palaeoecology,1989,69:25-139.
[15]MOLNAR P,TAPPONNIER P.Cenozoic tectonics of Asia:effectsof a continental collision[J].Science,1975,189:419-426.
[16]SCLATER J G,FISHER R L.The evolution of the east centralIndian Ocean,with emphasis on the tectonic setting of theNinetyeast Ridge[J].Geological Society of America Bulletin,1974,85:683-702.
[17]CHEN H H,DOBSON J,HELLER F et al.Paleomagnetic evidencefor clockwise rotation of the Simao region since the Cretaceous-aconsequence of India-Asia collision[J].Earth Planet.Sci.Lett.,1995,134:203-217.
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