中国南海A盆地深水区古近系B组层序地层格架特征
|
摘要
运用Vail经典的层序地层学理论,针对中国南海A盆地深水区古近系B组地层地震资料品质差,无井资料、断层复杂、高温高压造成地层破碎导致层序界面不明显等困难,综合浅水区井资料和深水区地震资料,采用井震结合相互验证的方法,识别出SB0,SB1,SB2,SB3,SB4等5个层序界面,将B组自下而上划分为SⅠ,SⅡ,SⅢ,SⅣ4个三级层序,建立了研究区目的层三维等时层序地层格架。结果表明,各层序界面和层序厚度在盆地和凹陷不同部位特征各异,形成这种特征的地质要素主要是差异沉降作用、局部隆升剥蚀作用以及盆地断陷作用等。发育在层序界面附近的低位体系域的斜坡扇、盆底扇和高位体系域的扇三角洲等是隐蔽油气藏的发育区和油气勘探的有利区。
Guided by classical sequence stratigraphy theory of Vail,and aimed at the difficulties of poor seismic data quality,no well data,complexity of faults,stratum fragmentation and stratigraphic sequence interfaces unsigned that formed by high temperature and high pressure of B Formation,finely carved up the stratum of B Formation of Paleogene in deepwater area.In this process,the well data of shallow water area and the seismic date of deepwater area were used,and five sequence interfaces of SB0,SB1,SB2,SB3 and SB4 were identified.Then the stratum of B Formation of Paleogene were divided into four third-class sequences of SⅠ,SⅡ,SⅢ and SⅣ,and the three-dimensional isochronous stratigraphic sequence trellis of B Formation in the study area were founded.The study results show that reasons of the space-time distributing characteristic of each sequence were differently depositing,partly ascending and denudation effect and rift faulting.Slope fan and basin floor fan developed in LST and fan deltas deve-loped in HST were stratigraphic traps developed areas and favorable areas of prospecting.
Guided by classical sequence stratigraphy theory of Vail,and aimed at the difficulties of poor seismic data quality,no well data,complexity of faults,stratum fragmentation and stratigraphic sequence interfaces unsigned that formed by high temperature and high pressure of B Formation,finely carved up the stratum of B Formation of Paleogene in deepwater area.In this process,the well data of shallow water area and the seismic date of deepwater area were used,and five sequence interfaces of SB0,SB1,SB2,SB3 and SB4 were identified.Then the stratum of B Formation of Paleogene were divided into four third-class sequences of SⅠ,SⅡ,SⅢ and SⅣ,and the three-dimensional isochronous stratigraphic sequence trellis of B Formation in the study area were founded.The study results show that reasons of the space-time distributing characteristic of each sequence were differently depositing,partly ascending and denudation effect and rift faulting.Slope fan and basin floor fan developed in LST and fan deltas deve-loped in HST were stratigraphic traps developed areas and favorable areas of prospecting.
引文
1 Henry S P,Paul W.Deepwater remains immature frontier[J].Offshore,2002,62(10):48~50
2张功成,米立军,吴时国等.深水区——南海北部大陆边缘盆地油气勘探新领域[J].石油学报,2007,28(2):15~21
3王春修.国外深水油气勘探动态及经验[J].中国海上油气(地质),2002,16(2):141~144
4陈斯忠,宋建民,陈伟煌.对海上找气的思考[J].中国海上油气(地质),2003,17(3):153~159
5戴金星,胡安平,杨春等.中国天然气勘探及其地学理论的主要新进展[J].天然气工业,2006,26(12):1~5
6龚再升等.中国近海大油气田[M].北京:石油工业出版社,1997
7蔡乾忠.中国海域油气地质学[M].北京:海洋出版社,2005
8陈欢庆,朱筱敏,刘长利等.A盆地深水区L组海相地层层序地层特征[J].矿物岩石,2009,29(1):104~120
9张万选,张厚福,曾洪流等.陆相地震地层学[M].东营:石油大学出版社.1993
10朱筱敏.层序地层学[M].东营:石油大学出版社,2000
11董艳蕾,朱筱敏,李德江等.渤海湾盆地辽东湾地区古近系地震相研究[J].沉积学报,2007,25(4):554~563
12马良,周江羽,王旭丽等.伊通盆地岔路河断陷始新统地层对比[J].石油实验地质,2008,30(3):260~269
13孙家振,李兰斌.地震地质综合解释教程[M].武汉:中国地质大学出版社,2002
14许杰,何治亮,郭建华等.塔里木盆地及周缘晚泥盆世沉积演化[J].石油实验地质,2008,30(6):568~574
15 Magbagbeola O A,Willis.B J.Sequence stratigraphy andsyndepositional deformation of the Agbada Formation,Rob-ertkiri field,Niger Delta,Nigeria[J].AAPG Bulletin,2007,91(7):945~958
16王亚琳,杨贵丽徐春华.合肥侏罗纪盆地性质及其与大别造山带沉积响应[J].石油实验地质,2007,29(1):57~62
17陈新军,徐旭辉,朱建辉等.松辽盆地十屋断陷层序地层研究[J].石油实验地质,2007,29(5):462~465
2张功成,米立军,吴时国等.深水区——南海北部大陆边缘盆地油气勘探新领域[J].石油学报,2007,28(2):15~21
3王春修.国外深水油气勘探动态及经验[J].中国海上油气(地质),2002,16(2):141~144
4陈斯忠,宋建民,陈伟煌.对海上找气的思考[J].中国海上油气(地质),2003,17(3):153~159
5戴金星,胡安平,杨春等.中国天然气勘探及其地学理论的主要新进展[J].天然气工业,2006,26(12):1~5
6龚再升等.中国近海大油气田[M].北京:石油工业出版社,1997
7蔡乾忠.中国海域油气地质学[M].北京:海洋出版社,2005
8陈欢庆,朱筱敏,刘长利等.A盆地深水区L组海相地层层序地层特征[J].矿物岩石,2009,29(1):104~120
9张万选,张厚福,曾洪流等.陆相地震地层学[M].东营:石油大学出版社.1993
10朱筱敏.层序地层学[M].东营:石油大学出版社,2000
11董艳蕾,朱筱敏,李德江等.渤海湾盆地辽东湾地区古近系地震相研究[J].沉积学报,2007,25(4):554~563
12马良,周江羽,王旭丽等.伊通盆地岔路河断陷始新统地层对比[J].石油实验地质,2008,30(3):260~269
13孙家振,李兰斌.地震地质综合解释教程[M].武汉:中国地质大学出版社,2002
14许杰,何治亮,郭建华等.塔里木盆地及周缘晚泥盆世沉积演化[J].石油实验地质,2008,30(6):568~574
15 Magbagbeola O A,Willis.B J.Sequence stratigraphy andsyndepositional deformation of the Agbada Formation,Rob-ertkiri field,Niger Delta,Nigeria[J].AAPG Bulletin,2007,91(7):945~958
16王亚琳,杨贵丽徐春华.合肥侏罗纪盆地性质及其与大别造山带沉积响应[J].石油实验地质,2007,29(1):57~62
17陈新军,徐旭辉,朱建辉等.松辽盆地十屋断陷层序地层研究[J].石油实验地质,2007,29(5):462~465
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心