التفاصيل البيبلوغرافية
| العنوان: |
非均质含大孔道油藏体膨颗粒凝胶体系调驱控水微观可视化优化方法. |
| Alternate Title: |
Optimization method with microscopic visualization of water control mechanism by combination of swelling particles and gels by in heterogeneous reservoirs with large pores. |
| المؤلفون: |
涂彬1, 李杰1 hollyme@163.com, 杨光辉2, 寸少妮3, 方凯3, 李相方1 |
| المصدر: |
Oil Drilling & Production Technology / Shiyou Zuancai Gongyi. 2024, Vol. 46 Issue 5, p600-617. 18p. |
| مصطلحات موضوعية: |
*AUTOMATIC control systems, NUCLEAR magnetic resonance, WATER consumption, OIL reservoir engineering, FLOOD control |
| Abstract (English): |
In heterogeneous reservoirs with high water consumption bands, the effect of single flooding technique after multi-phase flooding is getting worse and worse, and the combination of bulk particle and gel flooding has potential. The study of the micro-mechanism of the combination of bulk particle and gel is of great importance to reservoir adaptability and parameter optimization. The relationship between permeability and pore throat size was determined through the combination of mercury injection curves and nuclear magnetic resonance T2 spectra, leading to the establishment of a corresponding microscopic displacement model. Microfluidic experiments and visual glass chip models were employed to directly observe the microscopic blocking mechanisms of bulk particles and gels. The bulk particle size corresponding to the actual pore throat size was evaluated based on injection capacity. Based on these observations, the injection parameters of bulk expanded particles and gels were evaluated and optimized using longitudinal and planar heterogeneity models.When the bulk expansion particle diameter to pore throat diameter ratio (BTR) was less than 1.0, injection was more effective. However, when the BTR exceeded 2.0, injection became difficult. Larger particles entering the pore throat exhibited greater strength post-expansion, resulting in better plugging properties. The injection effect was optimal with a higher proportion of bulk slug (0.7 PV) and a lower proportion of gel slug (0.3 PV). Compared to pure gel or bulk slug, the recovery rate increased by 20.1%. The combination of glue and bulk expansion particles can improve oil recovery by plugging heterogeneous reservoirs dominated by large pores. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
(目的意义) 非均质含大孔道油藏的单一调驱效果差, 体膨颗粒和凝胶组合调驱控水具有潜在优势, 微观机理和参数优选具有重要作用。(方法过程) 通过压汞曲线和核磁共振 T2 谱相结合方法确定渗透率和孔喉尺寸关系, 建立相应的微观驱替模型, 通过微流控实验和可视化玻璃薄片模型直接观察体膨颗粒和凝胶的微观封堵机理, 以注入能力评价得到与实际孔喉尺寸匹配的体膨颗粒粒径, 基于此通过非均质模型评价并优选了体膨颗粒和凝胶的注入参数。(结果现象) 研究结果表明, 凝胶具有良好的注入性; 体膨颗粒在体膨颗粒半径/孔隙半径为 1.0 以下时注入性较好, 该值在 1.5~2.0 时注入性和封堵性均较好; 组合调驱时, 体膨颗粒段塞 0.7 PV、凝胶段塞 0.3 PV时封堵效果更好, 相比单纯体膨颗粒采出程度最终增加20.1%。(结论建议) 研究结果为非均质含大孔道油藏组合调驱的现场应用提供了理论依据与实践指导, 有助于提高此类油藏的调驱控水效率。 [ABSTRACT FROM AUTHOR] |
|
Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Business Source Index |