松辽盆地北部西斜坡萨尔图油层二砂组沉积微相研究
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摘要
大量岩心、录井、测井、地震、分析化验资料表明,松辽盆地北部西斜坡萨尔图油层二砂组主要分布于研究区东部,平面上主要由三角洲相和湖泊相组成。三角洲相主要发育河口坝微相、远砂坝微相和下切谷充填沉积。湖泊相主要发育滨浅湖砂坝和滨浅湖混合滩微相。河口坝砂体规模较大,物性较好,是油气聚集的有利储层。下切谷充填沉积呈长宽带状、面积较大,东连齐家—古龙坳陷,西接富拉尔基滨岸砂坝。砂岩中普遍含油显示,是富拉尔基油藏重要的油气运移通道。
The characteristics of sedimentary mocrofacies of No.2 sand beds group of Saertu servoirs in the west clinoform region of north Songliao Basin are studied subtly.In the course of research,synthetically is applied up to date theories and methods of sedimentography,and geophysics,with using cores,logging,well logging,seismics,analysis assay data and paleontology data.No.2 sand beds group of Saertu servoirs distributes mainly middle part and east part.It composes mostly of delta facies and lacustrine facies in plane.Delta facies are mainly composed of delta estuarine bars,distal end bars microfacies and filling of erosion valley.Lacustrine facies aremainly composed of shore-shallow lacustrine sand bars and shore-shallow lacustrine mixing beaches mocrofacies.The scale of delta estuarine bars are relatively larger,and their physical properties are comparatively good.Delta estuarine bars are favorable servoirs of oil and gas migrating and gathering.The distribution of filling of erosion valley presents long-wide banding and its area is relatively larger.It connects eastern Qijia-gulong sag and western shore sand bars in Fulaerji region.Sandstones contain generally oil.Filling of erosion valley is important oil-gas migrating channel of Fulaerji servoirs.No.2 sand beds group of Saertu servoirs is overlain by regional caprocks of Nenjiang formation and strata of Nenjiang formation form caprock sealing.
The characteristics of sedimentary mocrofacies of No.2 sand beds group of Saertu servoirs in the west clinoform region of north Songliao Basin are studied subtly.In the course of research,synthetically is applied up to date theories and methods of sedimentography,and geophysics,with using cores,logging,well logging,seismics,analysis assay data and paleontology data.No.2 sand beds group of Saertu servoirs distributes mainly middle part and east part.It composes mostly of delta facies and lacustrine facies in plane.Delta facies are mainly composed of delta estuarine bars,distal end bars microfacies and filling of erosion valley.Lacustrine facies aremainly composed of shore-shallow lacustrine sand bars and shore-shallow lacustrine mixing beaches mocrofacies.The scale of delta estuarine bars are relatively larger,and their physical properties are comparatively good.Delta estuarine bars are favorable servoirs of oil and gas migrating and gathering.The distribution of filling of erosion valley presents long-wide banding and its area is relatively larger.It connects eastern Qijia-gulong sag and western shore sand bars in Fulaerji region.Sandstones contain generally oil.Filling of erosion valley is important oil-gas migrating channel of Fulaerji servoirs.No.2 sand beds group of Saertu servoirs is overlain by regional caprocks of Nenjiang formation and strata of Nenjiang formation form caprock sealing.
引文
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8张志坚,张国斌,佟卉,等.松辽盆地北部泰康地区青山口组一段沉积微相特征.大庆石油学院学报,2004;28(6):84—86
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10王平在,辛仁臣.松辽盆地北部徐家围子断陷沉积体系及其演化规律.大庆石油学院学报,2001;25(3):36—40
11王树恒,卢双舫,杨善民.松辽盆地北部西斜坡青二、三段四级层序C1水进域沉积微相特征.大庆石油学院学报,2006;30(6):16—19,25
12王树恒,吴和勇,辛仁臣,等.松辽盆地北部西部斜坡高台子油层三砂组沉积微相研究.大庆石油地质与开发,2006;25(3):10—12
2高瑞祺,蔡希源.松辽盆地油气田形成条件与分布规律.北京:石油工业出版社.1997;47—103
3傅广,张云峰,杜春国.松辽盆地北部岩性油藏形成机制及主控因素.石油勘探与开发,2002;29(5):22—24
4雷茂盛,王文革,李春柏.松辽盆地岩性圈闭形成机理及识别方法.大庆石油地质与开发,1999;18(3):7—9
5迟元林,蒙启安,杨玉峰.松辽盆地岩性油藏形成背景与成藏条件分析.大庆石油地质与开发,2004;23(5):10—15
6宋铁星,师继红,王雪峰.松辽盆地主要次生岩性圈闭形成条件.大庆石油地质与开发,2001;20(4):17—21
7田春志,辛仁臣,李慧勇.松辽盆地北部西部断陷沙河子组沉积特征.大庆石油学院学报,2002;26(2):1—4
8张志坚,张国斌,佟卉,等.松辽盆地北部泰康地区青山口组一段沉积微相特征.大庆石油学院学报,2004;28(6):84—86
9王连君,辛仁臣,张明学,等.松辽盆地北部的西部断陷营城组沉积特征.大庆石油学院学报,2003;27(1):1—3,109
10王平在,辛仁臣.松辽盆地北部徐家围子断陷沉积体系及其演化规律.大庆石油学院学报,2001;25(3):36—40
11王树恒,卢双舫,杨善民.松辽盆地北部西斜坡青二、三段四级层序C1水进域沉积微相特征.大庆石油学院学报,2006;30(6):16—19,25
12王树恒,吴和勇,辛仁臣,等.松辽盆地北部西部斜坡高台子油层三砂组沉积微相研究.大庆石油地质与开发,2006;25(3):10—12
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