摘要
蒸汽辅助重力泄油(SAGD)是稠油油藏开发的有效技术,但由于实施过程中蒸汽热损失较严重,开发经济效益受到影响。为高效地开发这类油藏,模拟特稠油油藏D油田的地质特点制备长岩心,并采用油田实际原油开展了注入介质优选和注入参数优化驱替室内实验研究。结果表明,蒸汽中复合注入一定量的N2+CO2可有效改善开发效果,最优复合比例为1∶3。该研究为D油田开发决策提供了依据。
SAGD is the main development method for heavy oil. However, severe heat loss is faced up with during the steam injection process, which causes negative development performance. Therefore, to better develop the extra-heavy oil reservoir, injected fluids, and parameters were optimized using long core physical modelling from the geologic characteristics of oilfield D in extra-heavy oil reservoir. And results have indicated that injected steam mixed with some gas like CO2 and N2 can better improve the performance of SAGD, with the best injecting fluids temperature being 300℃, steam-gas ratio being 1∶3. And the method is suitable for oilfield D, which is also an example for similar oilfields.
作者
张风义
廖辉
高振南
罗成栋
崔政
耿志刚
葛涛涛
Zhang Fengyi;Liao Hui;Gao Zhennan;Luo Chengdong;Cui Zheng;Geng Zhigang;Ge Taotao(Bohai Oil Research Institute, CNOOC China Limited Tianjin Branch, Tianjin, 300459, China)
出处
《天然气与石油》
2019年第3期66-69,共4页
Natural Gas and Oil
基金
“十三五”国家重大专项“海上稠油油田高效开发示范工程”(2016 ZX 05058)
关键词
特稠油
SAGD
物理模拟
开发方式
注入介质
参数优化
Extra-heavy oil
SAGD
Physical modelling
Development method
Injecting fluids
Parameter optimization
