高强度可控制树脂插头剂及其对断裂形成的性能评估
Xiongwei Liu1,2, Biao Qi1,2, Xiuping Chen1,2
1Key Laboratory of Enhanced Oil Recovery in Carbonate Fractured-Vuggy Reservoirs, SINOPEC, Xinjiang 830011, China.
Gels (Basel, Switzerland)
|August 28, 2024
概括
这项研究开发了一种高强度的甲氨酸树脂堵塞剂,用于打击钻井操作中流失的循环. 优化的配方有效地密封断裂,显示出显著的突破压力,以提高井口稳定性.
科学领域:
- 钻井工程 钻井工程
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 失去循环会在钻井中带来重大风险,包括井口不稳定性和爆破.
- 有效的堵塞材料对于安全和高效的钻井操作至关重要.
- 尿素甲树脂提供高温耐受性和强度,用于失去循环控制.
研究的目的:
- 开发和优化一种基于尿素甲树脂的堵塞剂,用于失去循环.
- 评估在各种条件下开发的堵塞剂的性能.
- 为在破裂区中钻井流体损失提供一种新的解决方案.
主要方法:
- 优化尿素甲树脂配方,添加诸如贝他因,西兰合剂KH-570,化,甲,甲和甲纤维素等添加剂.
- 在最佳温度 (60-80°C) 和固化时间 (1-3小时) 下研究质和固化特性.
- 评估盐离子 (Na+,Ca2+) 和断裂特征对堵塞性能的影响.
主要成果:
- 准备了一个优化的树脂堵塞剂系统,具有可控制的固化性能.
- 该系统表现出稳定的粘度,并在固化之前表现为粘性液体.
- 用Na+形成水增强了固化强度和减少了时间,而Ca2+增加了时间和减少了强度.
- 在各种类型和大小的断裂中实现了有效的堵塞,突破压力高达9.98 MPa.
结论:
- 开发的高强度可固化树脂堵塞剂系统有效地解决了断裂区域中流失的循环问题.
- 该系统在模拟下孔条件下展示了出色的堵塞性能和高突破压.
- 这项研究为缓解钻井流体损失提供了有价值的见解和实际应用.
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