添加剂对不同碳酸盐岩石通过盐酸溶解率的影响
Ernani Dias da Silva Filho1, Guilherme Mentges Arruda1, Luan Vinicius Luna Dos Santos1
1Department of Petroleum Engineering, Federal University of Rio Grande do Norte, 59064-970 Natal, RN, Brazil.
ACS omega
|March 2, 2026
概括
含有表面活性剂的商业添加剂显著减缓碳酸盐储中的矩阵酸化. 这项研究发现,添加剂增加了岩石溶解时间的18倍以上,影响了盐酸 (HCl) 的有效性.
科学领域:
- 石油工程是石油工程中的一个.
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
背景情况:
- 矩阵酸化对于提高碳酸盐储库生产率至关重要.
- 盐酸 (HCl) 是常用的,但它的有效性可能会受到添加剂的影响.
- 通常使用含有表面活性剂的添加剂,如腐蚀抑制剂和乳液防止剂.
研究的目的:
- 评估商业添加剂对各种碳酸盐岩的溶解速度的影响,使用HCl.
- 为了比较酸岩反应动力学与没有添加剂的存在.
- 了解在添加剂配方中的表面活性剂对溶解性能的影响.
主要方法:
- 使用XRD,XRF,NMR和孔隙度测量,对四种不同的碳酸盐岩样本 (印第安纳石灰岩,甘比尔山石灰岩,威斯康星多洛米特,波内特雷多洛米特) 进行了表征.
- 在批量反应堆中进行溶解实验,以获得酸岩反应的动力曲线.
- 分析含有表面活性剂的商业添加剂 (腐蚀抑制剂,乳液防止剂) 对HCl溶液的影响.
主要成果:
- 石岩在没有添加剂的情况下显示出高溶解率 (>1 g min-1),由质量转移控制.
- 多洛米特岩石的反应性较低 (<0.1 g min-1).
- 添加剂显著减缓了所有岩石类型的HCl溶解,因泡形成和减少H+可用性而使酸样本的溶解时间增加了18倍以上.
结论:
- 商业添加剂中的表面活性剂大大降低了碳酸盐岩石的矩阵酸化效率.
- 与多洛米特岩石相比,石岩石的减速作用在石岩石中更为明显.
- 了解这些相互作用对于优化刺激治疗和预测水库反应至关重要.
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