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稠油注CO_2的方式及其驱油效果的室内实验
引用本文:杨胜来,李新民,郎兆新,张丽华,潘道兰,靳丽霞.稠油注CO_2的方式及其驱油效果的室内实验[J].中国石油大学学报(自然科学版),2001,25(2).
作者姓名:杨胜来  李新民  郎兆新  张丽华  潘道兰  靳丽霞
作者单位:石油大学石油工程系,
基金项目:中国石油天然气集团公司导向技术项目 (1998-1999)
摘    要:针对地层条件下粘度为 10 0mPa·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。

关 键 词:稠油  CO2吞吐  CO2驱  注入方式  驱油效率  室内实验

LABORATORY EVALUATION ON DISPLACEMENT EFFICIENCY OF SEVEN SCHEMES OF CO_2 INJECTION IN HEAVY OIL RESERVOIR
YANG Sheng-lai,LI Xin-min,LANG Zhao-xin,ZHANG Li-hua,PAN Dao-lan,JIN Li-xia.LABORATORY EVALUATION ON DISPLACEMENT EFFICIENCY OF SEVEN SCHEMES OF CO_2 INJECTION IN HEAVY OIL RESERVOIR[J].Journal of China University of Petroleum,2001,25(2).
Authors:YANG Sheng-lai  LI Xin-min  LANG Zhao-xin  ZHANG Li-hua  PAN Dao-lan  JIN Li-xia
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.
Keywords:heavy oil  injecting pattern  CO  2 huff\|n\|puff  CO  2 drived  displacement efficiency  laboratory experiment
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