STUDY OF SEQUENCE STRATIGRAPHY AND SUBTLE RESERVOIRS IN THE BIYANG SAG OF THE NANXIANG BASIN
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摘要: 运用T—R旋回基本理论,结合地震剖面反射特征和层序地层学以及区域连井剖面层序地层学解释,建立了南襄盆地泌阳凹陷古近系3级层序地层格架,将该区古近系核桃园组—廖庄组划分为1个Ⅰ级T—R旋回和4个Ⅱ级T—R旋回,并将核桃园组进一步划分为9个Ⅲ级T—R旋回,并进一步分析了泌阳凹陷T—R旋回层序中的沉积体系与沉积层序模式.在以上研究的基础上,对泌阳凹陷隐蔽油气藏分布规律进行了研究,发现其分布受凹陷地质构造与沉积特征控制,具有明显的分带性.同时结合本地区的生、储、盖组合,对泌阳凹陷油气藏进行了综合评价,指出了有利区带和有利勘探方向.Abstract: Based on T-R cycle theory,combined with seismic profile reflection characteristics and sequence stratigraphic analysis as well as local well profile sequence stratigraphic analysis,it is discussed in this paper the 3-grade sequence stratigraphic frameworks in the Lower Tertiary,the Biyang Sag,the Nanxiang Basin.The Hetaoyuan and Liaozhuang Formations of the Lower Tertiary in the Biyang Sag are divided into 1 Ⅰ-grade T-R cycle and 4 Ⅱ-grade T-R cycles.The Hetaoyuan Formation is subdivided into 9 Ⅲ-grade T-R cycles.Sedimentary system and sedimentary sequence patterns in T-R cycles in the Biyang Sag are analyzed.Studies of the distribution pattern of subtle reservoirs in the Biyang Sag indicate that,subtle reservoirs are zoned controlled by geologic structure and sedimentary characteristics.Taking into consideration of oil generation,accumulation and overlying formation in the region,the favorable exploration targets in the sag are predicted.
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Key words:
- T-R cycle /
- sequence stratigraphy /
- sedimentary system /
- subtle reservoir /
- the Biyang Sag /
- the Nanxiang Basin
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[1] 蒋恕,王华.断陷湖盆隐蔽油气藏勘探方法与实践--以泌阳凹陷为例[J].石油天然气学报,2005,27(3):273~277 [2] 张明安,鲜本忠.层序地层学在泌阳凹陷隐蔽油气藏预测中的应用[J].石油实验地质,2003,25(4):395~398 [3] 郭建华,朱美衡,刘辰生等.陆相断陷盆地湖平面变化曲线与层序地层学框架模式讨论[J].矿物岩石,2005,25(2):87~92 [4] Johnson J G,Klapper G,Sandberg C A.Devonian eustatic fluetuatins in Eurameriea[J].Geological Society of America Bulletin,1985,96:567~587 [5] 程晓玲,周小进,郭建华.渤海湾盆地东濮凹陷T-R旋回层序地层学与隐蔽油藏研究[J].石油实验地质,2003,25(5):548~556 [6] 郭建华,宫少波,吴东胜.陆相断陷湖盆T-R旋回沉积层序与研究实例[J].沉积学报,1998,16(1):8~14 [7] 李思田.含能源盆地沉积体系:中国内陆和近海主要沉积体系类型的典型分析[M].武汉:中国地质大学出版社,1996 [8] 杨香华,孙永传,孙家振.泌阳凹陷古近系的层序地层格架及其对边界断裂、古气候和物源的响应[J].地球科学,1994,19(5):676~684 [9] 蒋恕,蔡东升,朱光辉.辽东湾盆地辽中册陷隐蔽油气藏成藏模拟[J].石油实验地质,2007,29(5);70~75 [10] 胡海燕.渤海湾盆地新滩油田垦东32-33块隐蔽油气藏研究[J].石油实验地质,2007,29(2):97~100 [11] 罗群,吏锋兵,黄捍东等.中小型盆地隐蔽油气藏形成的地质背景与成藏模式[J].石油实验地质,2006,28(6):58~63 [12] 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):16~22 [13] 陈文学,姜在兴,鲜本忠.层序地层学与隐蔽圈闭预测[M].北京:石油工业出版社,2001,20~68 [14] 邱荣华.泌阳富油凹陷北部斜坡带浅层复杂断块群油气勘探[J].石油与天然气地质,2006,27(6):103~109 [15] 张永华,田小敏,罗家群.泌阳凹陷隐蔽油气藏分布特征与勘探方法[J].油气地质与采收率,2001(3):36~38 [16] 温志新,王红漫,陈春强等.南襄盆地泌阳凹陷南部陡坡带隐蔽油气藏形成与分布[J].石油实验地质,2006,28(2):117~121 -
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