河口坝砂体剩余油分布规律及影响因素——以东营凹陷胜坨油田为例  

Remaining Oil Distribution and Impact Factors in Mouth Bar Sands——An example from Shengtuo field in Dongying sag

作　　者：孙玉花[1,2] 辛治国[2] 

机构地区：[1]同济大学海洋与地球科学学院,上海200092 [2]中国石化胜利油田有限责任公司地质科学研究院,山东东营257015

出　　处：《新疆石油地质》2009年第2期215-218,共4页Xinjiang Petroleum Geology

摘　　要：将河口坝划分为单一河口坝和叠置河口坝2种类型,建立了不同厚度、不同渗透率、不同夹层频率、不同注采条件等共计18个概念模型,并数值模拟至模型极限含水。通过对数值模拟结果的对比分析,得到了河口坝剩余油的影响因素及剩余油分布模式。分析认为,影响2种类型河口坝砂体剩余油的最主要因素是渗透率级差和夹层位置与夹层上下储集层渗透率韵律特征;将单一河口坝砂体剩余油模式分为顶部富集型、均匀驱替型和底部富集型3种模型;将叠置河口坝砂体剩余油模式分为界面之上富集型、界面之下富集型和界面上下富集型3种模型。Mouth bar can be divided into single and overriding types. In this paper, 18 conceptual models are set up aeeording to different thicknesses, permeabilities, interbedded rhythms and injeetion-produetion eonditions, and simulated by limiting water cut of 98%. The simulated result presents the impact factors and the distribution mode of remaining oil in mouth bar. And the most important factors are permeability contrast and reservoir permeability rhythms up and down interbeds. Furthermore, the single type of mouth bar sand is subdivided into top enrichment model, homogeneous displacement model and bottom enrichment model for remaining oil; the overriding type is subdivided into above-interface, below-interface and above- and below-interface enrichment models.

关 键 词：河口坝 构型 数值模拟 剩余油 

分 类 号：TE112.24[石油与天然气工程—油气勘探]