学术论文

      稠油注CO2的方式及其驱油效果的室内实验

      LABORATORY EVALUATION ON DISPLACEMENT EFFICIENCY OF SEVEN SCHEMES OF CO2 INIECTION IN HEAVY OIL RESERVOIR

      摘要:
      针对地层条件下粘度为100mpa·s的稠油,采用室内实验方法研究了稠油注CO2的注入方式,包括CO2吞吐、CO2吞吐转CO2驱转水驱、CO2吞吐转水驱、CO2驱、水驱CO2段塞、CO2-水交替注入等,并对各种注入方式的驱油效率进行了比较。结果表明,在实验条件下,CO2-水交替注入和CO2吞吐转水驱的方式驱油效率最高,稠油CO2吞吐然后转为水驱的方式是可行的。该研究可为现场选择合理的注入方式提供技术参数。
      Abstract:
      Some experiments on seven schemes of CC2 injection are conducted using heavy oil with 100 mPa-s viscosity to evaluate the effect for enhancing oil recovery with CO2 in heavy oil reservoir under reservoir condition. The schemes include GO2 huff-n-puff, CO2 huff-n-puff followed by CO2 and water drive, CO2 huff-n-puff followed by water drive, water alternating CO2 injection (WAG), water drive, CO2 drive, displacement of CO2 slug by water. It is found that WAG and huffn-puff followed by water drive are the two best injection modes for heavy oil reservoir with viscocity of 100 mpa·s. It is conduded that CO2 huff-n-puff followed by water drive is a potential engineering scheme forimproving oil recovery.
      Author: YANG Sheng-lai LI Xin-min LANG Zhao-xin ZHANG Li-hua PAN Dao-lan JIN Li-xia
      作者单位: 石油大学石油工程系,
      刊 名: 石油大学学报(自然科学版) ISTICEIPKU
      年,卷(期): 2001, 25(2)
      分类号: TE357.45
      机标分类号: TE3 F4
      在线出版日期: 2004年1月8日
      基金项目: 中国石油天然气集团公司资助项目