吉林油田CO_2驱地面工程工艺技术

CO_2 Injection Technology in Jilin Oilfield

CO2驱油是CO2减排的重要途径,是油田提高采收率的重要手段。吉林油田通过大情字井油田的CO2驱油先导试验和扩大试验,完成了从气源到产出气循环注入的全流程工艺及现场试验。形成了先导试验的小站液相注入、扩大试验的集中液相注入、工业化推广的超临界注入3种模式,目前,正在进行工业化推广应用。介绍了CO2驱现场试验及效果,论述了CO2驱地面工程的关键技术,并对CO2驱现场试验的经验进行了总结,对我国CO2埋存、同类油气田的开发建设具有指导和借鉴作用。

The CO2 flooding technology was the main channel of carbon emission reduction and the important means of enhancing the oil recovery.The pilot test and expanding test were carried out in Daqingzijing oilfield of Jilin area.Both the laboratory and field tests of the whole process of CO2 injection from CO2 imput to the produced gaseous CO2 reinjection were fulfilled.There were three modes:liquid phase injection in the pilot test,concentrated liquid phase injection in the expanding test,and supercritical injection in the industrialization application were formed.At present there was ongoing industrialization application.The results of field test for the CO2 flooding technology were introduced,the key technologies were described,and the experiences of the field test were summarized.It had instructive effect for the development of similar oilfields with CO2.