超稠油烟道气辅助蒸汽吞吐室内实验研究

Laboratory experiment of fluegas-assisted steam stimulation in super-heavy oil reservoir

夏春鹏¹ 熊健² 张小东³

晋煤集团技术研究院，山西 晋城　048006 西南石油大学，四川 成都 610500 河南理工大学，河南 焦作　454150

Technology Institute of Jincheng Anthracite Group, Jincheng 048006, China Southwest Petroleum University, Chengdu 610500, China Henan Polytechnic University, Jiaozuo 454150, China

为解决某稠油油藏纯蒸汽吞吐效果不理想的问题，研究了烟道气辅助蒸汽吞吐技术。为此，在室内进行了气注入流体的膨胀实验和烟道气辅助蒸汽吞吐实验。实验研究中，共提出了10种实验方案，并在实验条件下，评价了各种实验方案的吞吐效果。研究结果表明，CO₂和N₂均能改善原油的物性，且CO₂对原油降黏幅度最大、膨胀能力最好；模拟烟道气中CO₂所占的比例越大，驱油效率越高，同时注入量也越大。

Fluegas?鄄assisted steam stimulation technology is studied in order to resolve the inadequate problem of pure steam stimulation effect in one heavy oil reservoir. We have conducted a research on the expansion experiment when gas is injected into fluid and fluegas-assisted steam stimulation experiment. In the study, we have put up ten experimental programs and we have estimated the effects of all kinds of programs in laboratory condition. Study result indicates that CO₂ and N₂ can improve the crude oil property and CO₂ has the maximum amplitude for viscosity reduction of crude oil and best expansion ability. The greater the proportion of CO₂ is in simulated fluegas, the higher displacement efficiency is, and the greater injection rate is.

10.6056/dkyqt2012z1021