优化交联聚乙烯酒精的制备过程及其在泥泥中的热稳定性
Junhao Li1,2, Haochen Ai3, Qingchen Wang4
1Engineering Research Center of Oil and Gas Field Chemistry, Universities of Shaanxi Provence, Xi'an Shiyou University, Xi'an 710065, China.
Gels (Basel, Switzerland)
|February 25, 2025
概括
这项研究优化了甲基交联聚乙醇 (PVA) 作为高温油井水泥泥泥的流体损失添加剂,显著提高了热稳定性和性能.
科学领域:
- 材料科学 材料科学 材料科学
- 石油工程是石油工程中的一个.
- 聚合物化学 聚合物化学
背景情况:
- 油井水泥泥中的高温流体损失是一个关键的挑战.
- 现有的流体损失添加剂在高温下往往会降解或失去效率.
- 开发热稳定的添加剂对于井的完整性至关重要.
研究的目的:
- 合成和优化甲基交联聚乙醇 (PVA) 作为石油井水泥泥泥的有效流体损失添加剂.
- 为了评估优化添加剂在高温和高压条件下的性能.
- 阐明交联PVA增强热稳定的机制.
主要方法:
- 一个因素的实验和统一的设计方法来优化参数.
- 合成具有特定参数 (50°C,1mol/L酸,8%PVA,1.47摩尔比率,1.49%交联) 的甲交联PVA.
- API流体损失测试,学分析,热重力测量分析 (TGA),泽塔潜力和扫描电子显微镜 (SEM).
主要成果:
- 在1%度 (30-110°C,6.9MPa) 下,优化交联PVA控制的API流体损耗<50毫升).
- 改善了泥的形学,使厚曲线平滑,并保持了压力强度.
- 交联的PVA水凝表现出高达260°C的热稳定性.
- SEM和TGA证实了稳定的网状结构,增强了耐热性.
结论:
- 甲交联PVA是一种高效和热稳定的油井水泥泥的流体损失添加剂.
- 交叉连接的网络结构提供了卓越的高温性能和稳定性.
- 这种添加剂为挑战石油和天然气勘探中深孔条件提供了一个有希望的解决方案.
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