河流相储层建模算法Fluvsim的改进  

An improved Fluvsim algorithm about fluvial reservoir modeling

作　　者：李君[1] 李少华[2] 昌伦杰[3] 王超[1] 李若竹[3] 马慧[1] LI Jun;LI Shaohua;CHANG Lunjie;WANG Chao;LI Ruozhu;MA Hui(Research Institute of Exploration and Development,Tarim Oilfield Company,CNPC,Korla 841000,China;College of Geosciences,Yangtze University,Wuhan 430100,China;Development Department,Tarim Oilfield Company,CNPC,Korla 841000,China)

机构地区：[1]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000 [2]长江大学地球科学学院,湖北武汉430100 [3]中国石油塔里木油田分公司开发事业部,新疆库尔勒841000

出　　处：《西北大学学报（自然科学版）》2018年第5期729-733,共5页Journal of Northwest University（Natural Science Edition）

基　　金：国家科技重大专项基金资助项目(2011ZX05011-001);国家自然科学基金资助项目(41272136)

摘　　要：为了刻画出河道宽度和厚度规律性变化的特征,对Fluvsim方法进行了改进。在保证原有河道形态的基础上引入了河道的物源方向,通过建立河道宽度及厚度各自变化的线性关系,构建相应的分布函数,通过蒙特卡洛抽样得到河道上每一点处的厚度及宽度值,进而刻画河道顺物源方向宽度及厚度规律性变化的特征。克拉玛依油田六中东区冲积扇储层中的流沟构型单元具有河道的几何形态,并且具有顺物源方向流沟宽度逐渐变宽、厚度逐渐变薄的特点。利用改进的Fluvsim方法较好地刻画了流沟的这种规律性变化特征,再现了流沟的真实几何形态。本研究提出的新方法对于其他几何形态呈规律性变化的储层单元的建模具有借鉴意义。FLUVSIM algorithm could well describe curved geometrical shape of channel reservoir,but the method can′t characterize it that the width or thickness changes regularly.To dipict the change rules of channel,the Fluvsim algorithm is improved.Introducing the direction of deposition based on origin channel shape and building adapted distribution function by setting the linear relation of channel width and thickness,then we can well depict the regularly changing characteristic of channel width and thickness along direction of deposition by getting width and thickness value of different channel locations through Montecarlo sampling.The Gulley architecture of Alluvial Fan reservoir at Liuzhong Dong area in Karamay Oilfield has channel′s geometric shape,and the gulley has the feature that its width will become more widely and widely and thickness will become thinner and thinner along direction of deposition.Using the improved Fluvsim algorithm,we can well describe the regular changing feature of gulley,and reproduce the geometry shape of gulley.The new method has mirror significance to geology modeling of other reservoir that its pattern also becomes regularly.

关 键 词：基于目标 Fluvsim 冲积扇 构型 流沟 建模 

分 类 号：TE343[石油与天然气工程—油气田开发工程]