泡沫混排携砂解堵机理及影响因素  

Mechanism and influencing factors of foam mixed flowback of sand production

作　　者：景紫岩 张佳 李国斌[1] 竺彪[3] 韩国庆[2] 刘双双 JING Ziyan;ZHANG Jia;LI Guobin;ZHU Biao;HAN Guoqing;LIU Shuangshuang(PetroChina Research Institute of Petroleum Exploration&Development-Northwest,Lanzhou 730020,China;College of Petroleum Engineering,China University of Petroleum,Beijing 102249,China;Production Optimization,China Oilfield Services Limited.,Tianjin 300450,China;Schlumberger(Beijing),Beijing 100084,China)

机构地区：[1]中国石油勘探开发研究院西北分院,兰州730020 [2]中国石油大学(北京)石油与天然气学院,北京102249 [3]中海油田服务股份有限公司生产事业部,天津300450 [4]斯伦贝谢(北京)技术公司,北京100084

出　　处：《岩性油气藏》2018年第5期154-160,共7页Lithologic Reservoirs

基　　金：国家重大科技专项"渤海油田泡沫混排增产工艺研究"(编号:2011ZX05014-004)资助

摘　　要：随着油田采出程度的提高,油藏近井地带堵塞问题愈加突出,为了消除堵塞、增强近井地带流通能力,提高采收率则成为高效开发的关键问题。根据泡沫混排技术的特点,在对其机理进行深入研究的基础上,设计泡沫混排携砂模拟实验,并对泡沫混排携砂影响因素进行分析。结果表明:气液比、裂缝、孔隙度、放喷压差是影响泡沫携砂能力及细粉砂排出的主要因素。该研究成果可为完善泡沫混排理论模型和实际施工提供很好的理论及技术指导,有助于提高油田单井采收率。With the increase of oil recovery,wellbore blockage in sandstone reservoir is becoming more and more serious.How to remove blockage and increase output has become a key issue of efficient development.From the angle of improving the permeability of oil layer to improve the production,many countries have generally adopted the methods of oil layer acidification and hydraulic fracturing to increase the oil recovery rate,but it also brings many negative problems,such as reservoir damage.Based on the mechanism of foam temporary support,state equation was used to deduce the change equation of formation pressure under the condition of foam compressibility,and study the influence of the main formation conditions and construction parameters under the condition of foam compressi-bility by combining the physical simulation experiment.The results show that gas liquid ratio,fracture,porosity and pressure drop are the main factors that affect the sand carrying capacity and the discharge of fine sand.This study can provide a theoretical and technical guidance for improving foam mixed flowback theoretical model and practical construction,and can help to improve single well recovery.

关 键 词：泡沫混排 机理研究 模拟实验 影响因素 采收率 

分 类 号：TE358.1[石油与天然气工程—油气田开发工程]