松辽盆地北部汪家屯地区泉四段沉积相特征
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摘要
以精细岩心观察为基础,结合录井、测井和地震资料分析,对松辽盆地北部汪家屯地区泉头组四段(K1q4)沉积相特征及演化规律进行了详细研究。研究表明汪家屯地区K1q4底界面为三级层序界面,顶界面为最大湖泛面,内部可划分为3个Ⅳ级层序:Q4-sq1、Q4-sq2、Q4-sq3;K1q4整体上属于退积型浅水三角洲沉积,通过研究识别出三角洲平原和三角洲前缘两个亚相,进一步可划分为水上分流河道、支流间湾、水下分流河道等多个沉积微相;Q4-sq1～Q4-sq3沉积时期,总体上表现为由三角洲平原到三角洲前缘水体逐渐加深的沉积过程,各层序内部砂地比比值逐渐减小,有利储集砂体在Q4-sq1沉积期最为发育。
Based on the fine core observation,logging and seismic data,the characteristics and evolution rules of sedimentary facies of the 4 th member of Quantou Formation of Wangjiatun Area in the Northern Songliao Basin were studied in detail.The results show that the bottom boundary of 4 th member of Quantou Formation is the third-order sequence boundary,and top boundary is a maximum flooding surface,the member can be divided into three fourth-order sequences,such as Q4-sq1,Q4-sq2,Q4-sq3.The sedimentary environment of the member belongs to regressive shallowwater delta,the delta plain and delta front are recognized,of which several microfacies such as distributary channel,tributary bay,submerged distributary channel are identified.During the deposition of the 4 th member of Quantou Formation,from Q4-sq1to Q4-sq3,the sedimentary facies is evolved from delta plain to delta front by rising lake level,the ratio of sandstone and strata has been reduced gradually,and the favourable reservoir sandstone is more developed in Q4sq1.
Based on the fine core observation,logging and seismic data,the characteristics and evolution rules of sedimentary facies of the 4 th member of Quantou Formation of Wangjiatun Area in the Northern Songliao Basin were studied in detail.The results show that the bottom boundary of 4 th member of Quantou Formation is the third-order sequence boundary,and top boundary is a maximum flooding surface,the member can be divided into three fourth-order sequences,such as Q4-sq1,Q4-sq2,Q4-sq3.The sedimentary environment of the member belongs to regressive shallowwater delta,the delta plain and delta front are recognized,of which several microfacies such as distributary channel,tributary bay,submerged distributary channel are identified.During the deposition of the 4 th member of Quantou Formation,from Q4-sq1to Q4-sq3,the sedimentary facies is evolved from delta plain to delta front by rising lake level,the ratio of sandstone and strata has been reduced gradually,and the favourable reservoir sandstone is more developed in Q4sq1.
引文
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[9]韩晓东,楼章华,姚炎明,等.松辽盆地湖泊浅水三角洲沉积动力学研究[J].矿物学报,2000,20(3):305～313.
[10]杨婷,单玄龙,刘万洙,等.松辽盆地齐家北地区下白垩统泉头组泉四段沉积微相特征[J].沉积与特提斯地质,2009,24(4):35～41.
[11]张明学,王丽静,梁江平.松辽盆地头台地区扶余油层沉积特征[J].大庆石油地质与开发,2007,26(6):43～46.
[12]亚东菊,张金亮,赵红娟,等.松辽盆地黒帝庙地区姚一段浅水三角洲沉积特征及沉积演化[J].中国海洋大学学报,2011,41(增刊):299～304.
[13]王立武.坳陷湖盆浅水三角洲的沉积特征——以松辽盆地南部姚一段为例[J].沉积学报,2012,30(6):1053～1060.
[2]马中振,庞雄奇.松辽盆地滨北地区岩性油气藏有利区预测[J].天然气工业,2007,27(8):44～47.
[3]蒙启安,黄薇,林铁峰,等.松辽盆地北部岩性油藏形成条件与分布规律[J].中国石油勘探,2004,9(4):6～11.
[4]赵波.松辽盆地安达地区石油地质特征及勘探方向分析[J].石油与天然气地质,2011,3(2):165～170.
[5]白云风,冯志强,程日辉,等.大庆长垣扶余油层沉积层序构成及充填响应[J].吉林大学学报(地球科学版),2012,42(2):312～320.
[6]朱筱敏,刘媛,方庆,等.大型坳陷湖盆浅水三角洲形成条件和沉积模式——以松辽盆地三肇凹陷扶余油层为例[J].地学前缘,2012,19(1):89～99.
[7]胡明毅,马艳荣,刘仙晴,等.大型坳陷型湖盆浅水三角洲沉积特征及沉积相模式——以松辽盆地茂兴-敖南地区泉四段为例[J].石油天然气学报(江汉石油学院学报),2009,31(3):13～17.
[8]邹才能,赵文智,张兴阳,等.大型敞流坳陷湖盆浅水三角洲与湖盆中心砂体的形成与分布[J].地质学报,2008,82(6):813～825.
[9]韩晓东,楼章华,姚炎明,等.松辽盆地湖泊浅水三角洲沉积动力学研究[J].矿物学报,2000,20(3):305～313.
[10]杨婷,单玄龙,刘万洙,等.松辽盆地齐家北地区下白垩统泉头组泉四段沉积微相特征[J].沉积与特提斯地质,2009,24(4):35～41.
[11]张明学,王丽静,梁江平.松辽盆地头台地区扶余油层沉积特征[J].大庆石油地质与开发,2007,26(6):43～46.
[12]亚东菊,张金亮,赵红娟,等.松辽盆地黒帝庙地区姚一段浅水三角洲沉积特征及沉积演化[J].中国海洋大学学报,2011,41(增刊):299～304.
[13]王立武.坳陷湖盆浅水三角洲的沉积特征——以松辽盆地南部姚一段为例[J].沉积学报,2012,30(6):1053～1060.
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