新疆石油地质

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (2): 155-157+188-189.

• 油藏工程 • 上一篇    下一篇

利用CO2改善韦5稠油油藏开采效果

梁玲, 程林松, 李春兰   

  1. 石油大学 石油天然气工程学院,北京 102249
  • 收稿日期:2002-03-28 修回日期:2002-08-23 出版日期:2003-04-01 发布日期:2020-09-17
  • 作者简介:梁 玲（1976-）,女,广西德保人,在读博士生,研究方向为油气渗流。联系电话：010-89733218

Improvement of Recovery Performance of Wei-5 Heavy Oil Reservoir by CO2 Stimulation Process

LIANG Ling, CHENG Lin-song, LI Chun-lan   

  • Received:2002-03-28 Revised:2002-08-23 Online:2003-04-01 Published:2020-09-17
  • About author:LIANG Ling (1976-), Female, Doctor Candidate, Petroleum Geology, 0il/Gas Engineering College, University of Petroleum, Beijing 102249, China.

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摘要： 针对江苏油田韦5中低渗复杂小断块薄层稠油油藏进行CO2 开采方式研究,为同类型稠油油藏利用CO2开采提供有益的借鉴。用数值模拟方法研究了CO2吞吐的敏感因素,结果认为,周期注气量、注气速度和生产过程的井底流压是影响吞吐效果的重要因素,浸泡时间对效果影响不大。以增产油量和换油率作为评价依据的计算结果表明,在大注气量、高注气速度和合理控制的生产井底流压下存在最优吞吐轮次,可以得到较好的CO2吞吐效果。

关键词: 江苏油田, 稠油, 二氧化碳, 数值模拟, 采出程度

Abstract: Study of using CO2 stimulation process in Wei-5 thin-layer heavy oil reservoir with medium-low permeability and complicated small fault block is conducted. By numerical simulation technique, sensitivity factors of CO2 stimulation are analyzed. The result shows that the major factors afcting CO2 stimulation performance include cyclic CO2 injection volume,CO2 injection rate and bottom hole pressure, while the soaked period has restricted effect. Based on increased oil production and improved oil production per unit volume of CO2 injection as evaluated basis, the calculated result indicates that under high CO2 injection volume,high CO2 injection rate and reasonably controlled bottom hole pressure, optimal cyclic numbers can be determined and better CO2 stimulation performance can be obtained. This study can be as a guide for development of those similar to this type of heavy oil reservoir.

Key words: Jiangsu oilfield, heavy oil, CO2, numerical simulation, recovery percent

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