石油钻采工艺2012，Vol.34Issue(5)：95-97,101,4.
高温高盐油藏CO2驱泡沫封窜体系研究与应用
Research and application on foam plugged channeling system in high-temperature and high-salt reservoirs CO2 flooding
摘要
Abstract
aiming at the gas channeling problem in CO2 flooding in Zhongyuan oilfield, CO2 foam plugged channeling system with heat resistance and tolerance to salt was developed. The amphoterie surfactant imidazoline was selected to be foaming agent and copolymer TL3000 was foam stabilizer in this system. The evaluation results in laboratory showed that the prescription had excellent synthetically function: resistant temperature 100℃, salt tolerance 20× 104 mg/L, calcium and magnesium resistance 5 000 mg/L. The formula was evaluated by CO2 gas inflation method, and the results showed that its half-life extends to 84 min, and surface tension is 30.6 mN/m while interfacial tension is 0.43 mN/m, and both of them are relatively lower. Visualization plugging experiment showed that this foam system has excellent foaming ability in porous medium. The core plugging test illustrated its strong plugged channeling ability with coefficient of resistance up to 25.63 and residual resistance factor of 9.4. 15 well times field application were launched, and the results indicated that the great plugging channeling capacity for CO2 gas channeling has provided a newly favorable attempt in controlling gas channeling problem in CO2 flooding.关键词
CO2驱/起泡剂/泡沫封窜/高温高盐/中原油田Key words
CO2 flooding/ foaming agent/ foam plugging channeling/ high-temperature and high-salt/ Zhongyuan oilfield分类
能源科技引用本文复制引用
杨昌华,王庆,董俊艳,王斌,杨斌,陈永浩..高温高盐油藏CO2驱泡沫封窜体系研究与应用[J].石油钻采工艺,2012,34(5):95-97,101,4.基金项目
中国石化"水驱废弃油藏二氧化碳驱提高采收率技术研究"项目(编号:P10070). （编号:P10070）
