北黄海盆地东部前中生界基底特征
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摘要
北黄海盆地是中国近海唯一未获得油气突破及勘探程度最低的含油气盆地(朝鲜已在该盆地东部实现了工业性油气突破), 朝鲜在东部凹陷的3口钻井证实北黄海盆地东部凹陷主体前中生界基底是下古生界(Pz1 ) 地层, 与上覆以砂泥岩为主的中—新生界地层在地球物理特征上有很大差异, 该特征提供了以地球物理资料推断和确定中—新生界盆地基底特征的可靠性。通过重力、磁力及大量多道地震资料解释认为, 北黄海盆地前中生界基底最大埋深约5 5km, 凹陷主体部位前中生界基底以下古生界碳酸盐岩为主, 其东北角可能存在上古生界碎屑岩基底, 而凹陷南部可能是元古界浅变质岩基底。
The North Yellow Sea Basin is the only one offshore petroliferous basin of China that is very lowly explored and where we have not made breakthroughs in oil and gas However, Korea has discovered commercial hydrocarbon in the east of the basin Three boreholes of Korea in the eastern depression give evidences that lower Paleozoic strata (Pz 1 ) act as the pre Mesozoic basement of the main body of the eastern depression and differ greatly in geophysical properties from the overlying Mesozoic Cenozoic strata dominated by sandstone and mudstone These geophysical data can be reliably used to infer and determine the characteristics of the Mesozoic Cenozoic basin basement Based upon the interpretations of gravitational, magnetic and multi channel seismic data, there is an evidence that the maximum buried depth of the pre Mesozoic basement is about 5 5 km in the North Yellow Sea Basin If taking the previous buried depth of 1 km as the boundary of the basement, the eastern depression has an area of about 1,700 km 2 Pre Mesozoic basement of the depression mainly consists of carbonate rock of Lower Paleozoic, in the northeast corner of the depression may exist Late Paleozoic basement made up of clastic rock, and there may be Proterozoic basement of epimetamorphic rock in the south of the depression
The North Yellow Sea Basin is the only one offshore petroliferous basin of China that is very lowly explored and where we have not made breakthroughs in oil and gas However, Korea has discovered commercial hydrocarbon in the east of the basin Three boreholes of Korea in the eastern depression give evidences that lower Paleozoic strata (Pz 1 ) act as the pre Mesozoic basement of the main body of the eastern depression and differ greatly in geophysical properties from the overlying Mesozoic Cenozoic strata dominated by sandstone and mudstone These geophysical data can be reliably used to infer and determine the characteristics of the Mesozoic Cenozoic basin basement Based upon the interpretations of gravitational, magnetic and multi channel seismic data, there is an evidence that the maximum buried depth of the pre Mesozoic basement is about 5 5 km in the North Yellow Sea Basin If taking the previous buried depth of 1 km as the boundary of the basement, the eastern depression has an area of about 1,700 km 2 Pre Mesozoic basement of the depression mainly consists of carbonate rock of Lower Paleozoic, in the northeast corner of the depression may exist Late Paleozoic basement made up of clastic rock, and there may be Proterozoic basement of epimetamorphic rock in the south of the depression
引文
[1] 邱中建,龚再升中国油气勘探(第四卷)近海油气区[M]北京:地质出版社,石油工业出版社,1999
[2] 王嘹亮,易海,姚永坚,等黄海海域沉积特征[A]海洋地质杂志社黄海海域油气地质[C]北京:海洋出版社,2003
[3] 刘振湖,姚永坚,曾祥辉北黄海盆地油气远景及勘探的若干问题[A]海洋地质杂志社黄海海域油气地质[C]北京:海洋出版社,2003
[4] 冯志强,姚永坚,曾祥辉,等对黄海中、古生界地质构造及油气远景的新认识[J]中国海上油气(地质),2002,16(6):367-373
[5] 蔡东升,冯晓杰,高乐,等中国近海前第三纪残留盆地及其勘探潜力与方向[J]中国海上油气(地质),2004,16(1):1-16
[6] 许东禹,刘锡清,张训华,等中国近海地质[M]北京:地质出版社,1997
[7] 李乃胜黄海三大盆地的演化[J]海洋与湖沼,1995,26(4):355-362
[8] 杨艳秋,戴春山,刘万洙北黄海盆地基底结构特征[J]海洋地质动态,2003,19(5):25-26
[9] 翟光明中国石油地质志,沿海大陆架及毗邻海域油气区(上册)卷十六[M]北京:石油工业出版社,1990
[10] 戴春山,李刚,蔡峰,等黄海前第三系及油气勘探方向[J]中国海上油气(地质),2003,17(4):225-231
[11] 梅冥相,李仲远滇黔桂地区晚古生代至三叠纪层序地层序列及沉积盆地演化[J]现代地质,2004,18(4):555-563
[12] 李小军,李景明,刘立群,等塔里木盆地东部盆山耦合与区带分析[J]现代地质,2004,18(2):164-170
[13] MaillAD PrinciplesofSedimentaryBasinAnalysis[M]NewYork:SpringerVerlay,1990
[14] 陈发景,张光亚,陈昭年不整合分析及其在陆相盆地构造研究中的意义[J]现代地质,2004,18(3):269-275
[15] 吴志强黄海地层岩石物理特征及其对地震勘探技术的挑战[J]中国海上油气(地质),2003,17(6):407-411
①赖万忠朝鲜油气与西湾盆地勘探中国海洋石油总公司1999②赖万忠IEDS报告1993
[2] 王嘹亮,易海,姚永坚,等黄海海域沉积特征[A]海洋地质杂志社黄海海域油气地质[C]北京:海洋出版社,2003
[3] 刘振湖,姚永坚,曾祥辉北黄海盆地油气远景及勘探的若干问题[A]海洋地质杂志社黄海海域油气地质[C]北京:海洋出版社,2003
[4] 冯志强,姚永坚,曾祥辉,等对黄海中、古生界地质构造及油气远景的新认识[J]中国海上油气(地质),2002,16(6):367-373
[5] 蔡东升,冯晓杰,高乐,等中国近海前第三纪残留盆地及其勘探潜力与方向[J]中国海上油气(地质),2004,16(1):1-16
[6] 许东禹,刘锡清,张训华,等中国近海地质[M]北京:地质出版社,1997
[7] 李乃胜黄海三大盆地的演化[J]海洋与湖沼,1995,26(4):355-362
[8] 杨艳秋,戴春山,刘万洙北黄海盆地基底结构特征[J]海洋地质动态,2003,19(5):25-26
[9] 翟光明中国石油地质志,沿海大陆架及毗邻海域油气区(上册)卷十六[M]北京:石油工业出版社,1990
[10] 戴春山,李刚,蔡峰,等黄海前第三系及油气勘探方向[J]中国海上油气(地质),2003,17(4):225-231
[11] 梅冥相,李仲远滇黔桂地区晚古生代至三叠纪层序地层序列及沉积盆地演化[J]现代地质,2004,18(4):555-563
[12] 李小军,李景明,刘立群,等塔里木盆地东部盆山耦合与区带分析[J]现代地质,2004,18(2):164-170
[13] MaillAD PrinciplesofSedimentaryBasinAnalysis[M]NewYork:SpringerVerlay,1990
[14] 陈发景,张光亚,陈昭年不整合分析及其在陆相盆地构造研究中的意义[J]现代地质,2004,18(3):269-275
[15] 吴志强黄海地层岩石物理特征及其对地震勘探技术的挑战[J]中国海上油气(地质),2003,17(6):407-411
①赖万忠朝鲜油气与西湾盆地勘探中国海洋石油总公司1999②赖万忠IEDS报告1993
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