南海“神狐型”BSR特征及影响因素
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摘要
为了深入探讨神狐海域BSR特征及其影响因素,对天然气水合物钻探区高分辨率地震资料进行了精细解释。结果表明,神狐海域天然气水合物与BSR具有较好的对应关系,研究区BSR总体表现出多轴(或不光滑)和连续性较差的特征;BSR振幅强度主要与水合物稳定带之下的游离气有关。结合世界典型水合物发现区BSR特征分析认为,"神狐型"BSR的形成可能主要与不同成因水合物在纵向上的相互叠置有关。
The high-resolution seismic reflection profiles from gas hydrate drilling zones of Shenhu area in South China Sea were interpreted precisely so as to analyze the features and the controlling factors of BSR(Bottom Simulating Reflector).It has been concluded that gas hydrate and BSR are closely related.In the study area,BSR is characterized by multi-axes and is discontinuous.The amplitude of BSR is mainly controlled by the free gas underneath the base of gas hydrate stable zone.BSR in Shenhu area might be influenced by the vertical combination of gas hydrates of different origins.
The high-resolution seismic reflection profiles from gas hydrate drilling zones of Shenhu area in South China Sea were interpreted precisely so as to analyze the features and the controlling factors of BSR(Bottom Simulating Reflector).It has been concluded that gas hydrate and BSR are closely related.In the study area,BSR is characterized by multi-axes and is discontinuous.The amplitude of BSR is mainly controlled by the free gas underneath the base of gas hydrate stable zone.BSR in Shenhu area might be influenced by the vertical combination of gas hydrates of different origins.
引文
[1]崔洁,何家雄,周永章,等.珠江口盆地白云凹陷天然气成因及油气资源潜力分析[J].天然气地球科学,2009,20(1):125-130.
[2]沙志彬,杨木壮,梁金强,等.BSR的反射波特征及其对天然气水合物识别的应用[J].南海地质研究,2003:55-61.
[3]雷怀彦,郑艳红,吴保祥.天然气水合物勘探方法:BSR适应性探析[J].海洋石油,2002(4):1-8.
[4]张明,伍忠良.天然气水合物BSR的识别与地震勘探频率[J].海洋学报,2004,26(4):80-88.
[5]Matsumoto R,Paull C,Wallace P.Gas hydrate sampling onthe Blake Ridge and Carolina Rise[R]//ODP Leg 164Pre-liminary Report.Taxas:ODP,1996.
[6]龚建明,曹志敏,陈建文,等.天然气水合物发现区沉积物生气量的模拟实验[J].中国科学(D辑):地球科学,2009,39(2):204-211.
[7]Lorenson T D,Claypool G E,Dougherty J A.Natural gas geo-chemistry of sediments drilled on the 2005Gulf of Mexico JIPcruise[J].Marine and Petroleum Geology,2008,25(9):873-883.
[8]吴能友,张海启,杨胜雄,等.南海神狐海域天然气水合物成藏系统初探[J].天然气工业,2007,27(9):1-6.
[9]Tréhu A M,Bohrmann G,Rack F R,et al.Drilling gas hy-drates on Hydrate Ridge,Cascadia continental margin[R]//ODP Leg 204Preliminary Report.Taxas:ODP,2003.
[10]吴志强,陈建文,龚建明,等.海域天然气水合物的BSR成因[J].海洋地质动态,2004,20(6):25-30.
[11]Shiply T H.Seismic evidence for wide spread possible gashydrate horizons on continental slopes and rises[J].Ameri-can Association of Petroleum Geological Bulletin,1979,63(12):2204-2213.
[12]Kvenvolden K A,McDonald T J.Gas hydrate of the MiddleAmerica Trench,Deep sea drilling project leg 84[R]//von HueneR,Aubouin J,eds.Initial Reports of Deep Sea Drilling Project.Washington DC:U.S.Government Printing Office,1985:667-682.
[13]Milkov A V,Sassen R.Thickness of the gas hydrate stabi-lity zone,Gulf of Mexico continental slope[J].Marine andPetroleum Geology,2000,17(9):981-991.
[14]龚建明,李惠君,张莉,等.水深对海域天然气水合物双BSR的控制作用[J].海洋地质动态,2010,26(7):7-11.
[15]龚建明,胡学平,王文娟,等.南海神狐海域X区块天然气水合物的控制因素[J].现代地质,2009,23(6):1131-1137.
[16]龚建明,杨艳秋,闫桂京,等.南海神狐海域热解成因与天然气水合物稳定带底界[J].中国矿业大学学报,2010,39(6):870-875.
[2]沙志彬,杨木壮,梁金强,等.BSR的反射波特征及其对天然气水合物识别的应用[J].南海地质研究,2003:55-61.
[3]雷怀彦,郑艳红,吴保祥.天然气水合物勘探方法:BSR适应性探析[J].海洋石油,2002(4):1-8.
[4]张明,伍忠良.天然气水合物BSR的识别与地震勘探频率[J].海洋学报,2004,26(4):80-88.
[5]Matsumoto R,Paull C,Wallace P.Gas hydrate sampling onthe Blake Ridge and Carolina Rise[R]//ODP Leg 164Pre-liminary Report.Taxas:ODP,1996.
[6]龚建明,曹志敏,陈建文,等.天然气水合物发现区沉积物生气量的模拟实验[J].中国科学(D辑):地球科学,2009,39(2):204-211.
[7]Lorenson T D,Claypool G E,Dougherty J A.Natural gas geo-chemistry of sediments drilled on the 2005Gulf of Mexico JIPcruise[J].Marine and Petroleum Geology,2008,25(9):873-883.
[8]吴能友,张海启,杨胜雄,等.南海神狐海域天然气水合物成藏系统初探[J].天然气工业,2007,27(9):1-6.
[9]Tréhu A M,Bohrmann G,Rack F R,et al.Drilling gas hy-drates on Hydrate Ridge,Cascadia continental margin[R]//ODP Leg 204Preliminary Report.Taxas:ODP,2003.
[10]吴志强,陈建文,龚建明,等.海域天然气水合物的BSR成因[J].海洋地质动态,2004,20(6):25-30.
[11]Shiply T H.Seismic evidence for wide spread possible gashydrate horizons on continental slopes and rises[J].Ameri-can Association of Petroleum Geological Bulletin,1979,63(12):2204-2213.
[12]Kvenvolden K A,McDonald T J.Gas hydrate of the MiddleAmerica Trench,Deep sea drilling project leg 84[R]//von HueneR,Aubouin J,eds.Initial Reports of Deep Sea Drilling Project.Washington DC:U.S.Government Printing Office,1985:667-682.
[13]Milkov A V,Sassen R.Thickness of the gas hydrate stabi-lity zone,Gulf of Mexico continental slope[J].Marine andPetroleum Geology,2000,17(9):981-991.
[14]龚建明,李惠君,张莉,等.水深对海域天然气水合物双BSR的控制作用[J].海洋地质动态,2010,26(7):7-11.
[15]龚建明,胡学平,王文娟,等.南海神狐海域X区块天然气水合物的控制因素[J].现代地质,2009,23(6):1131-1137.
[16]龚建明,杨艳秋,闫桂京,等.南海神狐海域热解成因与天然气水合物稳定带底界[J].中国矿业大学学报,2010,39(6):870-875.
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