摘要
茨榆坨油田茨13块原油属于普通稠油,1993年开始蒸汽吞吐采油,从第二轮开始效果明显变差,注汽返排率低,有效周期短,产量下降快,套管变形并增多。针对这些问题,在该区块茨21-133井进行CO_2吞吐采油工艺现场试验,获得成功,增油效果明显。
Crude oil of block Ci 13 in Ciyutuo oilfield belongs to general heavy oil. Cyclic steam stimulation started from 1993, and became ineffective obviously from the second cycle, showing as low backflow rate, short effective period, rapid production decreasing, and increasing casing deformation. In accordance with these problems, field test of CO2 flooding had been conducted in well Ci 21 - 133 in this block. The test was successful and oil increment was notable.
出处
《特种油气藏》
CAS
CSCD
2003年第3期82-83,90,共3页
Special Oil & Gas Reservoirs
