中国CO2提高石油采收率与地质埋存技术研究

STUDY ON CO2 EOR AND GEOLOGICAL SEQUESTRATION TECHNIQUE IN CHINA

控制CO2的排放已经得到世界各国政府和科技人员的广泛关注，已经成为一项声势浩大的国际行动。在我国实行CO2高效利用与地质埋存相结合的技术思路是缓解环境污染压力、提高石油采收率的有效途径。在分析CO2提高石油采收率与地质埋存技术研究现状和趋势的基础上，针对我国大多数油田非均质性强、渗透率低、原油黏度和含蜡量高、原油与CO2的混相压力高等特点，分析了CO2提高石油采收率与地质埋存技术体系中的关键科学问题：适合中国地质特点的CO2提高石油采收率与地质埋存评价体系问题、中国地质特点CO2提高石油采收率与地质埋存的基本地质理论问题、CO2提高石油采收率与地质埋存过程中的物理化学理论问题、CO2提高石油采收率与地质埋存驱动过程中的渗流力学问题及CO2分离、运输与防腐的相关科学问题，指出了在研究过程中需遵循的思路对策与途径，为中国CO2提高石油采收率与地质埋存一体化研究指明了方向。

Governments and scientific and technical personnel in all countries in the world pay their wide attention to control of CO2 emission, which becomes an internationally powerful and dynamic action. Execution of the techni- cal thinking of combining CO2 high efficiency use with geological sequestration is an effective way to relieve environ- ment pollution pressure and EOR. On the basis of situation and tendency of CO2 EOR and geological sequestration technique, in view of behaviors of most oilfields in our country, including serious heterogeneity, low permeability, high oil viscosity and paraffin content, high miscible pressure of crude oil and CO2, and so on, this paper analyses the key scientific problems in CO： EOR and geological sequestration technique system： the evaluation system prob- lem of CO2 EOR and geological sequestration suitable for geological behaviors in China, the basically geological the- ory problem of COz EOR and geological sequestration with geological behaviors in China, the physical chemistry theory problem during CO2 EOR and geological sequestration, the problem of fluid mechanics in porous medium during CO2 EOR and geological sequestration, and the scientific problem relative to CO2 separation, transportation and resistant to corrosion. The thinking and countermove needed to be followed are pointed out, which points out the direction for the integral study on CO2 EOR and geological sequestration in China.