摘要
白251井区油藏衰竭式开发,地层能量无法得到有效补充,油藏递减大,需要采用新技术,改善开发效果.CO2具有增加地层能量、降低原油粘度、改善渗流能力、沟通孔喉等作用,经白251井区的CO2适应性分析后,在该井区开展了CO2吞吐试验,结果表明:实施CO2吞吐后,油井能量恢复,纵向产液剖面得到改善,增油效果好.
Due to depleted reservoir development in Bai 251 well area,formation energy can not be effectivelysupplemented,and reservoir decline is large. New technology is needed to improve development effect. CO2 canincrease formation energy,reduce crude oil viscosity,improve seepage ability and communicate pore throat. After CO2 adaptability analysis in Bai 251 well area,CO2 huff and puff test were carried out in this well area. The re-sults show that after CO2 huff and puff,the energy of oil well is restored,the vertical fluid production profile isimproved,and the effect of oil increase is good.
出处
《新疆石油天然气》
CAS
2019年第3期74-78,8,共5页
Xinjiang Oil & Gas
关键词
CO2吞吐
降粘
增油
CO2 huff and puff
Viscosity reduction
Oil increment
