海拉尔盆地岩心与钻井液对CO_2气测的影响  

Effect of Hailar basin cores and drilling fluid on carbon dioxide gas testing

作　　者：陈新[1] 孙东[2] 高继龙[3] 姚维军[4] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [3]大庆油田责任有限公司第六采油厂,黑龙江大庆163114 [4]大庆石油管理局大庆钻探测井二公司,吉林松原138000

出　　处：《大庆石油学院学报》2009年第6期35-37,46,共4页Journal of Daqing Petroleum Institute

摘　　要：利用岩心样品和钻井液进行CO2脱气实验,分析钻井液类型对CO2气测产生的影响.结果表明:地层条件下含CO2气的岩心与不含CO2的岩心相比,前者脱出气的CO2体积分数明显高于后者.这表明岩心脱气分析可以帮助识别地层条件下岩石中是否存在CO2,推测岩屑也能起到这一作用.4种常用的钻井液脱气分析显示,不同类型的钻井液脱出气中CO2体积分数差异也很大,说明钻井液类型对CO2气测也产生影响.Through the degassing analysis of the core samples,we came to the conclusion that,under reservoir conditions,the CO2 bearing core was compared with the CO2 free core,the degassing carbon dioxide content of the former is significantly higher than that of the latter. This indicates that degassing analysis of the core can help to identify whether carbon dioxide exists in the rock under reservoir conditions,speculates that the debris can also play this role. Degassing analysis of the four kinds of drilling fluid shows that the degassing carbon dioxide content for different types of drilling fluid also makes a great difference,this illustrates that the type of drilling fluid may also have an impact on the carbon dioxide measurement.

关 键 词：二氧化碳 脱气 钻井液 岩心 气测录井 海拉尔盆地 

分 类 号：TE254.1[石油与天然气工程—油气井工程]