
第39参第4期 2017年7月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号:10007393(2017)04039306
DOI:10.13639/j.odpt.2017.04.001
Vol. 39 No. 4 July 2017
基于传质扩散理论的高渗油藏窜流通道量化方法
刘义刚’王传军’孟祥海’张云宝」李彦阅刘同敬2.3
1.中海石油(中国)有限公司天津分公司;2.中国石油大学(北京)提高采收率研究院;3.中国石沟大学(北京)石油工程教育部重点实验检室
弓用格式:刘义明,主传军,盖祥海,张云宝,季彦阅,对同敬,基于传质扩散理论的高渗油减审流通道量化方法J」,石油钻朵工艺,2017,39(4):393-398.
摘要:海上高渗砂岩油藏较结疏松,注入水冲剧作用对储层改造作用明,其审流通道在平面上呈“纺锤形”,垂向上有明显“贼层”特征。日前审流通道的时间城、空间城连续量化方法存在数学模型和求解过程过于复杂的缺陷。考虑审流通道平面垂向特征,建立降维方法,将高渗油藏注采并间审流通道三维物理模型变为平面和剖面两个二维物理模型的叠加;根据注入水
“饱和度差异”的“等效扩散系数”概念,建立了包含产出端含水率的平面数学模型;针对“贼层”是无效水循环主要通道的特征,定义了稀释倍数,实现了产出端含水率的解析求解,建立了审流通道厚度、渗遗率级差和等效扩散系数的快速量化方法。矿场算例应用结果显示,暴性水海井和快建水淹并审流通道厚度分别为0.04m、0.38m,渗造率级差分别为22、8,和示踪剂解释结累吻合;解释得到的等效扩散系数同时表征了储层微观非均质性和油水黏度比导致的指进程度及审流通道波及面积的大小。
关键词:高渗砂岩油藏;水驱;传质扩散;窜流通道;水洗变异;渗透率级差;等效扩散系数;数学模型
中图分类号:TE343
文献标识码:A
Quantitativemethodof channeling-pathbydiffusiontheory
in high permeability reservoir
LIU Yigang,WANG Chuanjun',MENG Xianghai', ZHANG Yunbao', LI Yanyue', LIU Tongjing
1. Tianjin Branch of CNOOC (China) Lid. Tianjin 300452, Chinr;
2. Research Irstitufe of Enhance Oil Recovery, China University of Petrolem (Bejing), Bejing 102249, China; 3. MOE Key Laborafory of Peroleum Engineering, China University of Petroleum (Bejing), Bejing 102249, Chinc
e er Ne Nnee channeling-path by diffusion theory in high permeability reservoir [ J] . Oil Drilling & Production Technology, 2017, 39(4): 393-398.
aaee seeseaasa e water flooding. The channeling-path generated from this action looks like spindle in plane and extreme heterogeneity in vertical. There-fore, it results in the current quantitative method and corresponding mathematical model are so complex that they are regularly solved with numerical approach, generally in which includes geological model establishment and discretization in time and space domain, rather than analytical method. Based on the new method proposed in this paper, the 3-D channeling-path physical model of channeling-path in interwell is equivalent with superposition between a horizontal model and vertical model respectively. Consequently, there is a new 3-D mathematical model which is the combination between a horizontal model with cquivalent diffusion coefficient which represents
基金项目:国家科技重大专项“资海油田高效采油工程及配套技术集成及示范"(编号:2016ZX05058-003-018);中海石油有限公司科
研项目“激海高含水油田在线调驱技术研究与应用(编号:YXKY-2016-TJ-02);北京市白然科学基会资助项目“基于数宇岩心的数宇渗流基础探索研究”(编号;2173061)
第一作者:对义则(1969-),教投级高级工程师,从事采油工程技术研究与管理工作。通试地址:(300452)天津市滨海斯区海川路2121号
潮海石沟管理局B座。电话:022-66501271。E-mail;liuyg@cnooc.com.cn
通讯作者:刘同放(1972-),别研究页,从事提高采收率技术研究工作。通试地址:(102249)北京市昌平区府学路18号新综合楼A座。电话:
010-89732158, E-mail; ljcup@cup.edu.cn
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