引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览次   下载 本文二维码信息
码上扫一扫!
分享到: 微信 更多
泡沫分流酸化数学模型的建立及应用
李松岩1,李兆敏1,林日亿2,陈月飞3,郭强4
(1.中国石油大学石油工程学院,山东东营257061;2.中国石油大学储运与建筑工程学院,山东东营257061;3.中国海洋油田服务股份有限公司,天津300451;4.辽河油田欢喜岭采油厂,辽宁盘錦124114)
摘要:
泡沫分流酸化能有效解决常规酸化中由于地层渗透率差兄而导致的小层进酸不均的问题。基于泡沫圈闭理 论和质量守恒原理,建立了泡沫分流酸化的数学模甩并进行了求解,同时确定了泡沫分流酸化工艺的设计原则。结 果表明:地层表皮系数随着酸化过程逐渐减小,井口和井底压力随泡沫的注入逐渐增大,随酸液的注人逐渐减小;泡 沫的注人使高渗层的流量逐渐降低,低渗li的流最逐渐增高,实现后续酸液转向低渗丨i;在相同的地层条件T,泡沫 酸酸化比泡沫段塞分流酸化的分流效果要好,但是作业时间长,井n和井底注人压力较高。现场应用表明泡沫分流 酸化能有效封堵高渗层,恢复产能,动用低渗层,适于非均质油藏油气井、重复酸化老井的解堵增产增注。
关键词:  泡沫段塞  分流酸化  非均质  数学模型
DOI:
分类号:
基金项目:国家&然科学基金(50876115);山东省自然科学基金(Y2007F14)
Mathematical model building for foam diversion acidizing and its application
LI Song-yan1,LI Zhao-min1,LIN Ri-yi2,CHEN Yue-fei3,GUO Qiang4
(1.College of Petroleum Engineering in China University of Petroleum, Dongying 257061,China;2. College of Transport & Storage and Civil Engineering in Chirm University of Petroleum, Dongying 257061, China;3. China Ocean Oilfield Services Limited Corporation, Tianjin 300451, China;4. Huanxiling Oil Production Plant of Liaohe Oilfield, Panjin 124114,China)
Abstract:
Foam diversion can effectively solve the problem that acid distribution among layers of different permeability is un-even during matrix acidizing. Based on gas trapping theory and mass conservation equation, mathematical models for foam diversion acidizing were established. Design methods for foam diversion acidizing were given. The mathematical model was solved by computer program. The results show that initial formation skin factor decreases during acidizing process. Wellhead and bottomhole pressure increase with foam injection, and decrease with acid injection. Flux of high-permeable layer decreases, and flux of low-permeable layer increases during foam injection, which can divert acid into low-permeable layer from high-permeable layer. Under the same formation situation, effect of foam-acid acidizing is better than that of foam slug diversion acidizing. In foam-acid acidizing, operation time is longer, and wellhead and bottomhole pressure are higher. Field application shows that foam-acid acidizing can effectively block high-permeable layer, and improve oil production. It is fit to heterogenous formation and old well with acidizing for many times.
Key words:  foam slug  diversion acidizing  heterogeneity  mathematical model
版权所有 中国石油大学学报(自然科学版)编辑部 Copyright©2008 All Rights Reserved
主管单位:中华人民共和国教育部 主办单位:中国石油大学(华东)
地址: 青岛市黄岛区长江西路66号中国石油大学期刊社 邮编:266580 电话:0532-86983553 E-mail: journal@upc.edu.cn
本系统由:北京勤云科技发展有限公司设计