氮气隔热在渤海油田热采中的应用研究  

APPLICATION OF NITROGEN INSULATION THERMAL RECOVERY TECHNOLOGY IN THE BOHAI OILFIELD

作　　者：赵利昌[1] 林涛[1] 孙永涛[1] 孙玉豹[1] 马增华[1] 刘海涛[1] 

机构地区：[1]中海油田服务股份有限公司油田生产研究院

出　　处：《钻采工艺》2013年第1期43-45,10,共3页Drilling & Production Technology

基　　金：国家科技重大专项"大型油气田及煤层气开发--海上稠油高效开发新技术(二期)(编号:2011ZX05024-005-001)"部分研究成果

摘　　要：受到海上特殊作业环境的影响,海上油田热采对隔热有较高的要求。建立井筒数学模型评价了在多元热流体热采中油套环空无氮气隔热、油套环空充氮气隔热、油套环空连续注氮气隔热三种方式,对不同氮气隔热方式的隔热效果分析对比,优选了最佳的隔热方式,同时配套了相应的井筒管柱。研究结果表明油套环空连续注氮气隔热效果最好,井筒沿程热损失较其它环空隔热措施小,套管温度低,同时连续氮气的注入有利于增加地层能量。油套环空连续注氮气隔热在渤海稠油油田的现场应用取得了较好的效果,保证了海上热采的顺利实施。It has high requirements on the insulation thermal recovery in offshore oilfield because of special service environment. Three insulated methods were evaluated by establishing the wellbore mathematical model, including nothing nitrogen in tubing casing annulus, nitrogen gas charging in tubing casing annulus, continuously injecting nitrogen in tubing casing annulus. The best insulation method was optimized through analysis and comparison of the insulation effect of different nitrogen insulation ways, and corresponding wellbore string was chosen. The test results showed that insulation effect of the continuously injecting nitrogen in tubing casing annulus was best, and heat loss along wellbore was less, the casing temperature was low, and continuous nitrogen injection could increase the formation energy. The application of continuous nitrogen injection insulation in tubing casing annulus has achieved good results in the Bohai heavy oil field.

关 键 词：渤海油田 多元热流体 热采 隔热 

分 类 号：TE53[石油与天然气工程—油气田开发工程]