塔中402CⅢ高温高盐油藏泡沫驱实验研究  

Study on foam flooding in high-temperature and high-salinity reservoir of Tazhong 402CⅢ

作　　者：方吉超 戴彩丽[1] 由庆[2] 赵健慧[1] 赵明伟[1] 丁琴芳 赵冀[3] 

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,山东青岛266580 [2]中国地质大学(北京)能源学院,北京100083 [3]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

出　　处：《油气地质与采收率》2014年第4期84-88,116-117,共5页Petroleum Geology and Recovery Efficiency

基　　金：长江学者和创新团队发展计划"复杂油藏开发和提高采收率的理论与技术"(IRT1294);山东省杰出青年基金"提高采收率与采油化学"(JQ201013);国家自然科学基金"锆冻胶分散体的制备;表征及其在多孔介质中的运移规律的研究"(51174221);教育部新世纪优秀人才支持计划"提高采收率与采油化学"(20110226)

摘　　要：针对塔中402CⅢ油藏高温、高盐和高硬度的特点,通过配伍性、起泡性能和热稳定性等实验优选了起泡剂体系,并通过物理模拟实验优化了泡沫驱施工参数,评价了泡沫的驱油潜力。实验结果表明:在温度为110℃、矿化度为11.52×104mg/L和钙镁离子质量浓度为7 654 mg/L的模拟油藏条件下,优选出酰胺丙基甜菜碱CS-1作为泡沫驱用起泡剂,其最佳使用质量分数为0.2%~0.3%,泡沫驱的最佳注入方式为气液混注,最佳注入气液比为1.5∶1,最佳注气速度为1mL/min,最佳注入量为0.5倍孔隙体积,在水驱采收率(56.63%)的基础上采收率提高了4.12%。In view of the characteristics of high hardness,high temperature and high salt in Tazhong 402 C Ⅲ reservoir,the foam agent was selected by means of experiments of compatibility,foamability and thermal stability.The operation parameters were ascertained by physical simulation experiment.Oil displacement experiment was also conducted under the reservoir condition.The results indicate that,under the reservoir condition(temperature 110℃,salinity 11.52×10~4 mg/L,Ca^(2+) & Mg^(2+) 7 654 mg/L),CS-1 was optimized as foaming agent for foam flooding and the working concentration was 0.2%-0.3%.Gas-liquid mixed injection with gas liquid ratio of 1.5:1,1mL/min of injection rate and 0.5 PV of injection quantity were the best operation parameters of foam flooding.And oil displacement experiment shows water flooding recovery increases by 4.12%on the basis of 56.63%.It can provide reference to further enhance oil recovery(EOR) of the high temperature and high salt oil fields.

关 键 词：高温高盐油藏 起泡剂 泡沫驱 注入方式 气液比 注入速度 

分 类 号：TE357.42[石油与天然气工程—油气田开发工程]