利用重磁资料研究南海东北部海域中生界分布
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摘要
由于受多种因素的影响,南海东北部海域中深部地震反射资料品质较差,信噪比较低,有效波能量弱,中深层反射波组特征不明显,为此,采取重磁震三方面资料相结合的地球物理综合解释方法,通过对研究区周边岩石物性特征分析、重磁资料精细处理与分析,结合地震资料显示的地层结构分析,圈出该地区的中生界分布范围,为我国油气资源战略选区和勘探开发提供地质科学依据。
Owing to interferences of several factors,the deep seismic data obtained from northeastern South China Sea basin are poor in quality,low in signal-to-noise ratio and weak in effective wave energy.In addition,the characteristics of reflection waves of the medium-deep layer are not clear.In view of such a situation,the method of comprehensive interpretation that applies gravimetric and magnetic data in combination with seismic data is adopted in this paper.By analyzing the features of peripheral rocks in the study area and further processing and analyzing the gravimetric and magnetic data in combination with the stratigraphic analysis,the authors found the distribution of Mesozoic strata,thus providing a scientific basis for oil and gas exploration.
Owing to interferences of several factors,the deep seismic data obtained from northeastern South China Sea basin are poor in quality,low in signal-to-noise ratio and weak in effective wave energy.In addition,the characteristics of reflection waves of the medium-deep layer are not clear.In view of such a situation,the method of comprehensive interpretation that applies gravimetric and magnetic data in combination with seismic data is adopted in this paper.By analyzing the features of peripheral rocks in the study area and further processing and analyzing the gravimetric and magnetic data in combination with the stratigraphic analysis,the authors found the distribution of Mesozoic strata,thus providing a scientific basis for oil and gas exploration.
引文
[1]刘昭蜀,赵焕庭,范时清,等.南海地质[M].北京:科学出版社,2002.
[2]邵磊,尤洪庆,郝沪军,等.南海东北部中生界岩石学特征及沉积环境[J].地质评论,2007,53(2):164-169.
[3]吴国,王汝建,郝沪军,等.南海北部海相中生界发育的微体化石证据[J].海洋地质与第四纪地质,2007,27(1):79-85.
[4]杨少坤,林鹤鸣,郝沪军.珠江口盆地东部中生界海相油气勘探前景[J].石油学报,2002,23(5):28-33.
[5]何家雄,夏斌,陈恭洋,等.台西南盆地中新生界石油地质与油气勘探前景[J].新疆石油地质,2006,27(4):398-402.
[6]夏戡原,黄慈流.南海中生代特提斯期沉积盆地的发现与找寻中生代含油气盆地的前景[J].地学前缘,2000,7(3):227-238.
[7]林珍.南沙中部海域北康、曾母盆地重磁异常特征及解释[J].物探与化探,2003,27(4):263-268.
[8]林珍,易海,王衍堂.重磁资料在北黄海盆地综合地球物理解释中的应用[J].物探与化探,2008,32(2):111-115.
[9]林珍,姚永坚.南黄海某典型剖面重磁震联合反演及综合解释[J].物探与化探,2009,33(4):361-367,373.
[2]邵磊,尤洪庆,郝沪军,等.南海东北部中生界岩石学特征及沉积环境[J].地质评论,2007,53(2):164-169.
[3]吴国,王汝建,郝沪军,等.南海北部海相中生界发育的微体化石证据[J].海洋地质与第四纪地质,2007,27(1):79-85.
[4]杨少坤,林鹤鸣,郝沪军.珠江口盆地东部中生界海相油气勘探前景[J].石油学报,2002,23(5):28-33.
[5]何家雄,夏斌,陈恭洋,等.台西南盆地中新生界石油地质与油气勘探前景[J].新疆石油地质,2006,27(4):398-402.
[6]夏戡原,黄慈流.南海中生代特提斯期沉积盆地的发现与找寻中生代含油气盆地的前景[J].地学前缘,2000,7(3):227-238.
[7]林珍.南沙中部海域北康、曾母盆地重磁异常特征及解释[J].物探与化探,2003,27(4):263-268.
[8]林珍,易海,王衍堂.重磁资料在北黄海盆地综合地球物理解释中的应用[J].物探与化探,2008,32(2):111-115.
[9]林珍,姚永坚.南黄海某典型剖面重磁震联合反演及综合解释[J].物探与化探,2009,33(4):361-367,373.
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