白淳元,胡望水,周振永,万敏,李相明,张惠文,李硕
BAI Chunyuan,HU Wangshui,ZHOU Zhenyong,WAN Min,LI Xiangming,ZHANG Huiwen,LI Shuo

• 1:长江大学地球科学学院
• 2:油气资源与勘探技术教育部重点实验室
• 3:中国石油华北油田公司第四采油厂

摘要(Abstract)：

目前渤海湾盆地廊固凹陷油气发现量与实际生烃量相差较大。为了加快渤海湾盆地廊固凹陷重点开发区块岩性油气藏的勘探开发进程，基于泉241-州16区块岩心相、测井相及岩屑分析化验等资料，利用地质和地球物理方法，结合沙三中亚段时期的区域沉积背景，对研究区沙三中亚段的主力砂组和重点开发小层的沉积微相、砂体发育和沉积模式进行了系统研究。结果表明：研究区沙三中亚段属于扇三角洲前缘沉积，沉积微相类型可划分为水下分流河道、分流间湾、河口坝、远砂坝及席状砂5种沉积微相，其中，水下分流河道为最主要的沉积微相类型，在平面上呈北西—南东向辫状分布，砂体在平面上呈现由近源到远源逐渐减薄的分布特点，并在以上研究基础上建立了研究区浅水进积型扇三角洲前缘的沉积模式。研究成果可为该区块后续勘探开发提供地质理论指导。
There is much difference between discovery amount of oil and gas and actual hydrocarbon generation amount in Langgu Sag of Bohai Bay Basin. In order to speed up the exploration and development process of litholog-ic reservoirs in the key development blocks in Langgu Sag, the sedimentary microfacies, sand body development and sedimentary pattern of the main sandstone formations and key development sub-layers in studied area are sys-tematically studied based on the data of core facies, logging facies and cuttings analysis of Well Quan 241-Zhou 16 block by using geological and geophysical methods and combined with regional sedimentary setting of Es3m. The re-sults show that Es3~m in studied area is fan delta frontal sediments, and is divided into 5 types of sedimentary microfacies including underwater distributary channel, interdistributary bay, mouth bar, far sand bar and sheet sand. Un-derwater distributary channel is the most dominant sedimentary microfacies type, distributed areally in NW-SE braided pattern. Sand bodies present areally proximal to distal distribution of gradual thinning. Sedimentary pattern of shallow-water progradational fan delta front in studied area is established based on this research. The research provides geological theoretical guidance for further development and exploration in this area.

关键词(KeyWords)： 渤海湾盆地;廊固凹陷;沉积微相;沉积模式;沙三中亚段;泉241-州16区块
Bohai Bay Basin;Langgu Sag;sedimentary pattern;sedimentary microfacies;Es3m;Quan 241-Zhou 16 block

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“渤海湾盆地精细勘探关键技术”（2016ZX05006-002）

作者(Author): 白淳元,胡望水,周振永,万敏,李相明,张惠文,李硕
BAI Chunyuan,HU Wangshui,ZHOU Zhenyong,WAN Min,LI Xiangming,ZHANG Huiwen,LI Shuo

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