低渗透油藏注CO_2驱油现状研究

Study on CO_2 Flooding Technology and Current Application in the Low-permeability Reservoir

低渗透油田最基本的特点就是流体渗透能力差、产能低,常规方式下采收率低。CO2作为一种驱油剂,在低渗油藏的开发中具有明显的增油降水效果,即CO2驱油技术在封存CO2,降低该温室气体对环境影响的同时,可以提高油田的采收率。通过探讨低渗透油藏注CO2提高原油采收率的驱油机理和应用现状,指出CO2在提高低渗油藏采收率方面大有可为。

With the low porosity and low permeability,low natural output is the usual consequence in low-permeability reservoirs.As one displacement agent,CO2 can increase oil output and decrease water flow,as a result,CO2 flooding technology is beneficial to EOR and can seal up this green gas at the same time.The great use of CO2 in EOR is showed in this study by investigating oil displacement mechanism and its application status worldwide.