建筑结构控制下的油藏属性建模  

MODELING OF RESERVOIR ATTRIBUTES CONTROLLED BY ARCHITECTURAL STRUCTURE

作　　者：齐陆宁[1,2] 杨少春[1] 林博[2] 

机构地区：[1]中国石油大学地球资源与信息学院,山东东营257061 [2]中国石化胜利油田分公司海洋采油厂,山东东营257237

出　　处：《大庆石油地质与开发》2010年第6期73-77,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：基金项目：“十五”国家重点攻关项目“大中型油田勘探开发关键技术研究”资助（编号2003BA613A-02）.

摘　　要：以胜坨油田二区沙二段3^4层为例，结合建构要素解析与随机建模理论，重点研究建构要素控制下的油藏属性建模，来发现各种建构要素控制的油藏类型细分及剩余油分布规律。通过对7口取心井观察，结合岩性、沉积特征、电性特征分析，划分了9种岩相类型、7级沉积界面和7种构型要素，各种构建要素代表不同的变差函数。模型分析统计显示，河道充填沉积和心滩分布范围最广，占总量的63．1％；天然堤较为发育，占10．6％；决口扇、洪泛平原、河道滞留沉积、落淤层分别占8．9％，8．1％、4．9％、4．4％。总之，综合考虑孔隙度、渗透率及剩余油量，建构要素控制下的剩余油分布可以从小到大分布如下：落淤层、洪泛平原、天然堤、决口扇、河道滞留沉积、心滩、河道充填沉积。Taking Layer 34 of Sha No. 2 Member in No. 2 Area of Shengtuo Oilfield as an example and integrating architectural element analysis and stochastic modeling theory, this paper focuses on the oil reservoir attribute modeling controlled by the above elements, so as to find out the subdivision of reservoir types and remained oil distribution laws for all kinds of oil reservoirs controlled by various architectural elements. Through the observation of 7 cored wells and combining the analyses of lithology, sedimentary features, electrical features, 9 lithofacies types, 7 interface ranks and 7 architectural-elements are classified. Different Variation functions are represented by each architectural-element respectively. The model analysis reveals that channel filled deposition and channel bar are the most, up to 63.1% of the total; natural levee is well-developed and reaches 10.6% ; crevasse splay, flood plain, channel detained deposition and siltation interlayer amount to 8.9%, 8.1%, 4.9% and d. 4% respectively. To sum up, taking porosity, permeability and amount of remained oil production into comprehensive consideration, the remained oil distribution controlled by every architectural-element can be ranged from the min. to the max： siltationinterlayer, flood plain, natural levee, and crevasse splay, channel detained deposition, channel bar, and channel filled deposition.

关 键 词：河流相 构型要素分析 变差函数 随机建模 

分 类 号：TE319[石油与天然气工程—油气田开发工程]