黄骅坳陷沙河街组层序地层样式及隐蔽圈闭预测
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摘要
为了揭示黄骅坳陷中部沙河街组隐蔽油气藏的分布规律,运用层序地层学理论,根据对沙河街组岩芯、测井和地震资料的分析,在该组划分出2个二级层序、7个三级层序及21个体系域,建立了黄骅坳陷中区沙河街组层序地层格架,并探讨了其与沉积、构造演化的对应关系.根据现代沉积学研究结果,在黄骅坳陷中部沙河街组划分出5种沉积体系:扇三角洲体系、湖泊三角洲体系、近岸水下扇体系、深水浊积体系和湖泊体系.结果表明:该区隐蔽油气藏的有利勘探目标主要是歧南凹陷的低位域和高位域砂体.
The Shahejie formation in the central part of Huanghua depression is one of the most important oil-bearing and exploration formations.Based on sequence stratigraphy and analyses of cores,logging and seismic information,two second-order sequences,seven third-order sequences and twenty one system tracts were identified in Shahejie formation of the central part of Huanghua depression.The sequence stratigraphy frame was established and the relationship between the frame and sediment,structural evolution was analyzed.Fan delta system,lacustrine delta system,inshore subaqueous fan system,tubidite system in deep water and lacustrine system were identified in this formation based on modern sedimentology.The results show that the sand bodies of highstand and lowstand are favorable explore targets in Qinan depression.
The Shahejie formation in the central part of Huanghua depression is one of the most important oil-bearing and exploration formations.Based on sequence stratigraphy and analyses of cores,logging and seismic information,two second-order sequences,seven third-order sequences and twenty one system tracts were identified in Shahejie formation of the central part of Huanghua depression.The sequence stratigraphy frame was established and the relationship between the frame and sediment,structural evolution was analyzed.Fan delta system,lacustrine delta system,inshore subaqueous fan system,tubidite system in deep water and lacustrine system were identified in this formation based on modern sedimentology.The results show that the sand bodies of highstand and lowstand are favorable explore targets in Qinan depression.
引文
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[14]郑浚茂,于兴河,谢承强,等.不同沉积环境储层的层内非均质性———以黄骅坳陷为例[J].现代地质,1995,9(4):501-508.ZHENG Jun-mao,YU Xing-he,XIE Cheng-qian,et al.Mesoscopic heterogeneity of reservoir in dif-ferent sedi mentary environments[J].Geoscince,1995,9(4):501-508.
[2]薛叔浩,刘雯林,薛良清,等.湖盆沉积地质与油气勘探[M].北京:石油工业出版社,2002:210-216.
[3]谯汉生,王明明.渤海湾盆地隐蔽油气藏[J].地学前缘,2000,7(4):497-501.JIAO Han-sheng,WANG Ming-ming.Subtle hydro-carbon reservoirs in Bohai wan basin[J].Earth Sci-ence Frontiers,2000,7(4):497-501.
[4]蔡希源.中国石化油气勘探回顾与展望[J].石油与天然气地质,2006,27(6):715-721.CAI Xi-yuan.Reviewand outlook of SINOPEC’s oiland gas exploration[J].Oil&Gas Geology,2006,27(6):715-721.
[5]沈守文,彭大钧,颜其彬,等.试论隐蔽油气藏的分类及勘探思路[J].石油学报,2000,21(1):16-21.SHEN Shou-wen,PENG Da-jun,YAQN Qi-bin,etal.Classification and exploration methods of subtletrap reservoirs[J].Acta Petrolei Sinica,2000,21(1):16-22.
[6]林雄,田景春.非构造油气藏国内外研究现状及发展方向[J].岩相古地理,2002,17(1):28-31.LIN Xiong,TIAN Jing-chun.The nonstructuraloil—gas pools:perspective and research status[J].Lithology and Paleogeology,2002,17(1):28-31.
[7]付国民,郑荣才,赵俊兴,等.鄂尔多斯盆地环县地区延安组高分辨率层序地层学特征[J].中国矿业大学学报,2005,34(3):394-399.FU Guo-min,ZHENG Rong-cai,ZHAO Jun-xin,etal.High resolution sequence stratigraphic character-istics of Yanan formationin Huanxian County of Or-dos Basin[J].Journal of China University of Mining&Technology,2005,34(3):394-399.
[8]吴因业.陆相盆地层序地层学分析的方法与实践[J].石油勘探与开发,1997,24(5):7-10.WU Yin-ye.The analysismethod and practice of se-quence stratigraphy in continental basin[J].Petrole-um Exploration and Development,1997,24(5):7-10.
[9]柏涛,徐志伟.层序地层学在隐蔽圈闭预测中的应用———以松辽盆地南部为例[J].吉林大学学报:地球科学版,2004,34(1):73-78.BAI Tao,XUu Zhi-wei.The appl ication of sequencestratigraphy to the prediction of subtle trap-TakeSongnan region as example[J].Journal of Jilin Uni-versity:Earth Science Edition,2004,34(1):73-78.
[10]杜振川,金瞰昆,孙玉壮,等.高分辨率层序地层模式及油气地质意义———以沾化凹陷下第三系为例[J].中国矿业大学学报,2002,31(4):430-434.DUZhen-chuan,JIN Kan-kun,SUN Yu-zhuang,etal.High-Resolution sequence stratigraphic modelsand its petroleum geological significance of lowertertiary in Zhanhua Sag[J].Journal of China Uni-versity of Mining&Technology,2002,31(4):430-434.
[11]蔡希源,李思田,郑和荣.陆相盆地高精度层序地层学-隐蔽油气藏勘探基础、方法与实践[M].北京:地质出版社,2003:235-246.
[12]饶丹,孙肇才,贾存善,等.中国东部下第三系构造演化与源岩发育关系[J].石油学报,2005,26(6):10-15.RAO Dan,SUNZhao-cai,JIA Cun-shan,et al.Re-lationship between Palaeogene tectonic evolvementand development of source rock in the east of China[J].Acta Petrolei Sinica,2005,26(6):10-15.
[13]陈昭年,陈发景,周建生,等.黄骅坳陷中北区和歧口凹陷断裂构造特征及古应力分析[J].现代地质,1997,11(4):471-477.CHEN Zhao-nian,CHEN Fa-jing,ZHOU Jian-sheng,et al.,Characteristics of faults and pal-eostress analysis in north and middle area of Huang-hua Subbasin and Qikou Depression[J].Geosci-ence,1997,11(4):471-477.
[14]郑浚茂,于兴河,谢承强,等.不同沉积环境储层的层内非均质性———以黄骅坳陷为例[J].现代地质,1995,9(4):501-508.ZHENG Jun-mao,YU Xing-he,XIE Cheng-qian,et al.Mesoscopic heterogeneity of reservoir in dif-ferent sedi mentary environments[J].Geoscince,1995,9(4):501-508.
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