...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy & fuels >Wettability Determination of the Crude Oil-Reservoir Brine-Reservoir Rock System with Dissolution of CO_2 at High Pressures and Elevated Temperatures
【24h】

Wettability Determination of the Crude Oil-Reservoir Brine-Reservoir Rock System with Dissolution of CO_2 at High Pressures and Elevated Temperatures

机译：在高压和高温下溶解CO_2的原油-储层-盐水-储层岩石系统的润湿性测定

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An experimental method has been developed to determine the wettability, i.e., the contact angle, of the crude oil-reservoir brine-reservoir rock system with dissolution of CO_2 at high pressures and elevated temperatures, using the axisymmetric drop shape analysis (ADSA) technique for the sessile drop case. In the experiment, a see-through windowed high-pressure cell is prefilled with reservoir brine to submerge the reservoir rock. Subsequently, CO_2 is slowly injected through the brine phase to pressurize the system to a prespecified pressure at a constant temperature. After the CO_2-reservoir brine system reaches the equilibrium state, a crude oil sample is introduced by using a specially designed syringe delivery system to form a sessile oil drop on the reservoir rock inside the pressure cell. The sequential images of the dynamic sessile oil drop are acquired and analyzed by applying computer-aided image acquisition and processing techniques to measure the dynamic contact angles at different times. It is found that the dynamic contact angle between the crude oil and the reservoir rock in the presence of CO_2-saturated reservoir brine remains almost constant at a given pressure and a constant temperature, though CO_2 is gradually dissolved into the sessile oil drop until the latter is completely saturated with the former. It is also found that the equilibrium contact angle increases as the pressure increases, whereas it decreases as the temperature increases. In comparison with the equilibrium contact angle data for the crude oil-reservoir brine-reservoir rock system without any dissolution of CO_2, the equilibrium contact angles of the crude oil-reservoir brine-reservoir rock system with dissolution of CO_2 are smaller at T = 27 ℃ but larger at T = 58 ℃. Such wettability alteration will significantly affect oil recovery and subsequent storage when CO_2 is injected into an oil reservoir at high pressures.
机译：已经开发了一种实验方法，使用轴对称液滴形状分析（ADSA）技术来确定在高压和高温下溶解有CO_2的原油-储层盐水-储层岩石系统的润湿性，即接触角。无柄下落的情况。在实验中，一个透明的窗口式高压单元预先充满了储层盐水以淹没储层岩石。随后，将CO_2缓慢注入盐水相，以在恒定温度下将系统加压至预定压力。 CO_2储层盐水系统达到平衡状态后，通过使用专门设计的注射器输送系统引入原油样品，以在压力容器内的储层岩石上形成无影的油滴。通过应用计算机辅助图像采集和处理技术来测量不同时间的动态接触角，可以获取并分析动态无柄油滴的顺序图像。发现在给定压力和恒定温度下，在CO_2饱和的储层盐水存在下，原油与储层岩石之间的动态接触角几乎保持恒定，尽管CO_2逐渐溶解在无柄油滴中，直到后者前者完全饱和。还发现平衡接触角随压力增加而增加，而随温度增加而减小。与没有溶解CO_2的原油-储层盐水-储层岩石系统的平衡接触角数据相比，在T = 27时，溶解有CO_2的原油-储层盐水-储层岩石系统的平衡接触角较小。 ℃，但在T = 58℃时更大。当在高压下将CO_2注入到储油层中时，这种润湿性的变化将显着影响油的回收和随后的储存。

著录项

  • 来源
    《Energy & fuels》 |2008年第4期|p.2362-2371|共10页
  • 作者

    Daoyong Yang; Yongan Gu; Paitoon Tontiwachwuthikul;

  • 作者单位

    Petroleum Technology Research Centre (PTRC), Petroleum Systems Engineering, Faculty of Engineering, University of Regina, Regina, Saskatchewan S4S 0A2 Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TK-;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号