渤海湾盆地渤中28-2南油田群鸟足状浅水三角洲识别与沉积演化

发布时间：2018-04-19 11:32

本文选题：渤海湾盆地 + 渤中坳陷　；参考：《中国海洋大学学报(自然科学版)》2017年09期

【摘要】：在区域沉积环境、岩心描述、岩心室内外分析化验资料、录井资料、测井资料分析基础上,结合渤海海域中南部晚第三纪沉积模式,通过河流相—曲流河和湖相—三角洲沉积、浅水三角洲沉积特点及相标志与渤中28-2南油田群的实际资料综合对比分析,认为渤中28-2南油田群明化镇组下段中部沉积了一套湖相浅水三角洲,浅水三角洲的形状主要以鸟足状浅水三角洲为主,它区别于曲流河沉积,也不同于典型的三角洲沉积。平面上是曲流河沉积向前伸入水下湖相的延伸,仍以河道沉积为主,表现出湖盆面积小、水体浅、能量弱、波浪及岸流作用小、无潮汐作用、湖水密度小等沉积特征。该认识对油田的滚动勘探开发具有重要指导意义。
[Abstract]:On the basis of regional sedimentary environment, core description, analysis of laboratory data, logging data and logging data, combined with the late Tertiary sedimentary model in the central and southern Bohai Sea, the fluvial facies, meandering river and lacustrine facies delta deposits are adopted.The sedimentary characteristics and facies marks of shallow water delta are compared with the actual data of the south oilfield group of Bozhong 28-2. It is considered that a set of lacustrine shallow water delta was deposited in the middle part of the lower member of Minghuazhen formation of Bozhong 28-2 oil field group.The shape of shallow water delta is mainly bird foot shallow water delta, which is different from meandering river deposition and typical delta deposition.On the plane, the meandering river deposits extend forward into the underwater lacustrine facies, and the main sedimentary features are river sedimentation, which shows that the lake basin area is small, the water body is shallow, the energy is weak, the wave and shore currents are small, there is no tidal action, and the lake water density is small.This understanding is of great significance to the rolling exploration and development of oil fields.
【作者单位】：中海石油(中国)有限公司天津分公司渤海石油研究院;山东科技大学地球科学与工程学院;
【基金】：国家自然科学基金项目(51504143)资助~~
【分类号】：P618.13

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