辽西低凸起锦州地区古近系沙河街组三段砂体分布特征及物源分析
|
摘要
横向低凸起常因残余面积小,而在物源体系中未得到重视。利用高分辨率三维地震资料,通过断裂组合、断层接触关系、垂向位移和上下盘地层厚度等特征的识别,在辽东湾地区辽西低凸起锦州25地区识别出同向叠覆型和同向趋近型两类构造转换带。采用"点面反馈,源体比对"的思路,依据钻井岩相、宏观地震相和地震属性的分析,结合砂岩重矿物组合、ZTR指数和成分成熟度等资料,在研究区沙三段识别出3类与低凸起具有成因联系的沉积相:构造转换型扇三角洲、陡坡坡折型近岸水下扇和凸缘末梢交叉断裂型扇三角洲,建立了低凸起差异物源分配模式。同时,结合钻井泥岩声波时差中地层剥蚀的响应,提出易于风化的母岩、剥蚀区动态变化和高效物源通道是低凸起围区砂体能够富集的根本原因。构造转换带型扇三角洲对解决该地区小物源贫砂问题意义重大。
Few attention has been paid to the Liaoxi Lateral Low Uplift in provenance system analyses due to its small residual area.Using high resolution three dimensional seismic data,through analyses of the combination and contact of faults,vertical displacement and the thickness of strata of the hanging wall and foot wall,synthetic-overlapping and synthetic approaching tectonic transition belts exist in JZ25 area in the Liaoxi Lateral Low Uplift of Liaodongwan Bay area.Based on drilling litho facies,seismic facies,seismic attribute analyses,heavy mineral assemblage of sandstone,ZTR index and composition maturity,three types of sedimentary facies are identifid,including tectonic transition fan delta,steep slope subaqueous fan and peripheral rift fan delta.Combining with strata erosion response of mudstone acoustic time difference.The authors propose that sandbody accumulation depends on mother rock easily being wea-thered,dynamic change of erosion area and efficient provenance path.The tectonic transition fan delta is important for improving the sandbody-lacking status in the relatively small provenance area.
Few attention has been paid to the Liaoxi Lateral Low Uplift in provenance system analyses due to its small residual area.Using high resolution three dimensional seismic data,through analyses of the combination and contact of faults,vertical displacement and the thickness of strata of the hanging wall and foot wall,synthetic-overlapping and synthetic approaching tectonic transition belts exist in JZ25 area in the Liaoxi Lateral Low Uplift of Liaodongwan Bay area.Based on drilling litho facies,seismic facies,seismic attribute analyses,heavy mineral assemblage of sandstone,ZTR index and composition maturity,three types of sedimentary facies are identifid,including tectonic transition fan delta,steep slope subaqueous fan and peripheral rift fan delta.Combining with strata erosion response of mudstone acoustic time difference.The authors propose that sandbody accumulation depends on mother rock easily being wea-thered,dynamic change of erosion area and efficient provenance path.The tectonic transition fan delta is important for improving the sandbody-lacking status in the relatively small provenance area.
引文
陈发景,贾庆素,张洪年.2004.传递带及其在砂体发育中的作用[J].石油与天然气地质,25(2):144-148.
加东辉,徐长贵,周心怀,等.2007.辽东湾地区辽东带中南部古近纪古地貌恢复、演化及其对沉积体系的控制[J].古地理学报,9(2):157-160.
姜培海.2001.辽西低凸起油气成藏的主要控制因素及勘探潜力[J].油气地质与采收率,8(4):24-27.
李宝刚.2008.高邮凹陷断裂调节带发育特征及其石油地质意义[J].中国石油大学学报(自然科学版),32(1):19-23.
林畅松,潘元林,肖建新,等.2000.“构造坡折带”——断陷盆地层序分析和油气预测的重要概念[J].地球科学——中国地质大学学报,25(3):260-262.
刘宝珺.1996.沉积岩石学[M].北京:地质出版社,87-105.
漆家福,杨桥,陈发景,等.1994.辽东湾—下辽河盆地新生代构造的运动学特征及其演化过程[J].现代地质,8(1):1-9.
漆家福.2007.裂陷盆地中的构造变换带及其石油地质意义[J].海相油气地质,12(4):43-50.
徐长贵,赖维成,薛永安,等.2004.古地貌分析在渤海古近系储集层预测中的应用[J].石油勘探与开发,31(5):53-56.
沿海大陆架及毗邻海域油气区石油地质志编写组.1990.中国石油地质志(卷十六).沿海大陆架及毗邻海域油气区(上册)[M].北京:石油工业出版社,83-85.
赵澄林,杨丛笑,刘孟慧.1996.渤海盆地早第三纪陆源碎屑岩相古地理学[M].北京:石油工业出版社,87-105.
周心怀,项华,于水,等.2005.渤海锦州南变质岩潜山油藏储集层特征与发育控制因素[J].石油勘探与开发,32(6):17-20.
周心怀,余一欣,魏刚,等.2008.渤海辽东湾海域JZ25-IS转换带与油气成藏的关系[J].石油学报,29(6):837-840.
Morley C K,Nelson R A,Patton T L,et al.1990.Transfer zones in theEast African in lift-system and their relevance to hydrocarbon explo-ration in rifts[J].AAPG Bulletin,74(8):1234-1253.
加东辉,徐长贵,周心怀,等.2007.辽东湾地区辽东带中南部古近纪古地貌恢复、演化及其对沉积体系的控制[J].古地理学报,9(2):157-160.
姜培海.2001.辽西低凸起油气成藏的主要控制因素及勘探潜力[J].油气地质与采收率,8(4):24-27.
李宝刚.2008.高邮凹陷断裂调节带发育特征及其石油地质意义[J].中国石油大学学报(自然科学版),32(1):19-23.
林畅松,潘元林,肖建新,等.2000.“构造坡折带”——断陷盆地层序分析和油气预测的重要概念[J].地球科学——中国地质大学学报,25(3):260-262.
刘宝珺.1996.沉积岩石学[M].北京:地质出版社,87-105.
漆家福,杨桥,陈发景,等.1994.辽东湾—下辽河盆地新生代构造的运动学特征及其演化过程[J].现代地质,8(1):1-9.
漆家福.2007.裂陷盆地中的构造变换带及其石油地质意义[J].海相油气地质,12(4):43-50.
徐长贵,赖维成,薛永安,等.2004.古地貌分析在渤海古近系储集层预测中的应用[J].石油勘探与开发,31(5):53-56.
沿海大陆架及毗邻海域油气区石油地质志编写组.1990.中国石油地质志(卷十六).沿海大陆架及毗邻海域油气区(上册)[M].北京:石油工业出版社,83-85.
赵澄林,杨丛笑,刘孟慧.1996.渤海盆地早第三纪陆源碎屑岩相古地理学[M].北京:石油工业出版社,87-105.
周心怀,项华,于水,等.2005.渤海锦州南变质岩潜山油藏储集层特征与发育控制因素[J].石油勘探与开发,32(6):17-20.
周心怀,余一欣,魏刚,等.2008.渤海辽东湾海域JZ25-IS转换带与油气成藏的关系[J].石油学报,29(6):837-840.
Morley C K,Nelson R A,Patton T L,et al.1990.Transfer zones in theEast African in lift-system and their relevance to hydrocarbon explo-ration in rifts[J].AAPG Bulletin,74(8):1234-1253.
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