新安边油区延9、延10沉积微相研究  

Sedimentary microfacies of the Yan-9、Yan-10 reservoir of Yan'an formation in Xin'anbian district

作　　者：张鹏 李鑫[2] 贺杠 乔伟[2] 刘成洋[2] 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]延长油田股份有限公司定边采油厂,陕西定边718600 [3]中煤陕西榆林能源化工有限公司,陕西榆林719000

出　　处：《石油化工应用》2013年第1期76-79,98,共5页Petrochemical Industry Application

摘　　要：新安边油区延9属于湖泊-三角洲相沉积体系,主要是三角洲平原亚相,主要发育分流河道和漫滩沼泽沉积(或河道间沉积)微相。岩性在纵向上表现为砂岩和泥岩的互层,既有进积型也具有前积型沉积。测井曲线主要以钟型、箱型以及钟型一箱型组合为主,反映分流河道沉积,而锯齿形曲线一般为漫滩沼泽或河道间沉积。延10属于河流相沉积,属于辫状河亚相充填沉积,主要发育河道砂坝、河道沉积和河漫滩三种微相。在纵向上砂岩、泥岩、煤或炭质泥岩组成的进积型多旋回沉积,沉积初期多为巨厚多阶性辫状河较粗碎屑岩填充沉积。根据对研究区沉积微相的研究,结合单井相和连井剖面对比分析,对延9、延10沉积微相进行了综合表征,并提出了开发调整意见,为新安边油区特低渗透油田的高效开发奠定了地质基础。The Xin＇anbian of the oil zone Yan-9 belongs to the lakes - delta facies sedimentary system, mainly the delta plain, mainly developed shunt （or river between the river and floodplain swamp deposition）microfacies. Lithology performance in the vertical interbedded sandstone and mudstone, both into the plot type foreset deposition. Logging curve to the bell box and bell-shaped box combination, reflect the diversion channel deposits, and jagged curve is generally deposited floodplain swamp or river. Yan-10 of fluvial deposition is a braided river the subphase filling deposition, the major developmental river dam, river sediments and floodplain three kinds of micro-phase. In the longitudinal direction into the plot-type multicyclic sedimentation of sandstone, mudstone, coal or carbonaceous mudstone deposited early thick multi-step braided fluvial the coarser clastic fill deposition. Sedimentary microfacies research study area, combined with the single well phase and even well profile comparative analysis, extension Yan-9,Yan-lO is deposited micro-phase comprehensive characterization, and put forward the views of the development and adjustment, ultra-low permeability oil region of Xin＇an side efficient development of the oil fields laid geological foundation.

关 键 词：湖泊三角洲 单井相 沉积微相 连井剖面 

分 类 号：P618.13[天文地球—矿床学]