高温和耐盐聚合物凝粘合剂的合成,特性和现场应用
Guowei Zhou1, Xin Zhang1, Weijun Yan1
1CNPC Greatwall Drilling Company, 101 Anli Road, Chaoyang District, Beijing 100101, China.
Gels (Basel, Switzerland)
|June 25, 2025
概括
一种新的聚合物凝,GW-VIS,使用纳米碳酸,在高温下保持稳定的粘度,高达200°C. 这种高温压缩器为深油气井的高效钻井流体提供了卓越的风湿稳定性和盐分耐受性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 石油工程是石油工程中的一个.
背景情况:
- 高聚合物凝粘度减小剂在高温下经常失效,使流体损失控制复杂化.
- 在具有挑战性的地质条件下,开发强大的攻克器对于高效的钻井操作至关重要.
研究的目的:
- 为高温应用合成和评估一种基于聚合物的新型纳米碳酸盐复合剂 (GW-VIS).
- 评估用于钻井流体配方的开发材料的热学特性,热稳定性和盐分耐受性.
主要方法:
- 烯胺 (AM),2-烯胺-2-甲基硫酸 (AMPS),N-乙烯基 (NVP) 和纳米碳酸的水悬浮聚合.
- 使用红外光谱学,热重力测量分析和扫描电子显微镜进行表征.
- 风病学测试,耐热实验和高温盐耐受性测试.
主要成果:
- 该GW-VIS复合材料表现出高的一致系数 (k = 761),超过了无粘土钻井流体的要求.
- 稳定的粘度保持在180°C (0%降低),在200°C时仅呈现14.8%的下降.
- 该材料表现出极好的盐分耐受性,在200°C热后,在和NaCl度下,粘度降低仅为17.31%.
结论:
- 聚合物凝形成了一个网络结构,提供了高达200°C的优异的风学稳定性,适合深层石油和天然气井开发.
- 纳米碳酸的结合提高了聚合物材料的耐温性和NaCl耐受性.
- 现场试验证实了GW-VIS在无粘土钻井流体中的有效性,支持成功的形成操作.
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