摘要
渤海油田采用现有热采注汽管柱注汽时井底蒸汽干度低,达不到方案设计要求,同时注汽管柱自身无长效测试功能。为进一步提升海上油田注汽工艺管柱性能,开展了高效注汽及监测工艺管柱研究。通过模拟计算,明确了影响注汽管柱隔热效果的影响因素,研制了气凝胶隔热管+隔热接箍组合管柱,提升了注汽效果;以高温光纤测试技术为基础,结合海上热采井特点和测试需求,优化设计了长效测试工艺。现场试验表明,高温光纤测试工艺首次成功实现了海上热采井全井筒长效测试,可满足海上热采井长效测试技术需求;通过高温监测数据进行拟合计算,应用高效注汽工艺后,井底干度可达0. 50以上,注汽效果大幅提升。配套形成的高效注汽及监测工艺管柱将进一步提高海上稠油规模化热采开发效果。
The low bottom-hole quality of available steam injection string fails to meet program design requirements in the Bohai Oilfield,and the steam injection string lacks long-term testing function. In order to improve the performances of steam injection string in offshore oilfield,a comprehensive research was conducted on the efficient steam injection and string monitoring. The influencing factors of steam injection string insulating performance were identified through simulation and a combination string with aerogel heat insulation pipe + heat insulation coupling was developed to improve the steam injection performance. Based on the high-temperature fiber testing technology,a long-term testing process was optimized by combining with the thermal recovery well characteristics and testing requirements in offshore oilfield. Field test proves that the full-wellbore long-term testing of offshore thermal recovery well was successfully realized with high-temperature optical fiber testing process,which could meet the technical requirements of long-term testing for offshore thermal recovery wells. After the application of this high-efficiency injection process,the bottom-hole quality can reach more than 0. 50 by fitting calculation with high-temperature monitoring data,which shows a favorable steam injection performance. The supporting high-efficiency steam injection and monitoring string will further improve the large-scale thermal recovery performance of offshore heavy oil.
作者
韩晓冬
邹剑
唐晓旭
王秋霞
刘海英
钟立国
Han Xiaodong;Zou Jian;Tang Xiaoxu;Wang Qiuxia;Liu Haiying;Zhong Liguo(China University of Petroleum(Beijing),Beijing 102249,China;CNOOC(China)Tianjin Branch,Tianjin 300459,China;CNOOC EnerTech-Drilling&Production Company,Tianjin 300452,China)
出处
《特种油气藏》
CAS
CSCD
北大核心
2020年第2期169-174,共6页
Special Oil & Gas Reservoirs
基金
国家科技重大专项“渤海油田高效采油工程及配套技术示范”(2016ZX05058-003)
中海石油(中国)有限公司重大专项“稠油规模化热采有效开发技术”(CNOOC-KJ 135 ZDXM 36 TJ04TJ)。
关键词
热采
注汽管柱
隔热效果
稠油
海上油田
thermal recovery
steam injection string
thermal insulating performance
heavy oil
offshore oilfield
