研究凝-树脂复合物用于失去循环控制,以改善断裂形成的堵塞效应
Jinzhi Zhu1,2,3,4, Tao Wang1,2,3,4, Shaojun Zhang1,2,3,4
1Tarim Oilfield Branch, Korla 841000, China.
Gels (Basel, Switzerland)
|August 28, 2025
概括
在高温,高压钻井环境中, 一种新的凝树脂复合物有效地堵塞了流失的循环区域. 这种先进的材料提供了卓越的强度,可吸性和环境降解性, 以提高井口稳定性.
科学领域:
- 材料科学
- 石油工程
- 化学工程
背景情况:
- 失去循环是钻井工程的一个关键挑战,导致流体流失,不稳定性和环境问题.
- 传统的堵塞剂在恶劣的高温,高压 (HTHP) 条件和复杂的构成下失效.
研究的目的:
- 为HTHP钻井环境开发高性能凝树脂复合材料.
- 评估材料的结构稳定性,在各种下井条件下的修形特性和性能.
主要方法:
- 用纳米二氧化和核桃颗粒的双-A环氧树脂,六甲基和乙烯纤维素的优化配方.
- 使用富里埃变换红外光谱 (FTIR) 和热重力测量分析 (TGA) 的表征.
- 风病学试验,老化试验,污染耐受性试验,压力阻塞试验和酸溶性试验.
主要成果:
- 复合材料在220°C的初始分解温度下表现出结构稳定性,在140°C的45天后保持了14.4MPa的压力强度.
- 通过剪切稀释行为 (初始粘度: 300-350 mPa·s) 和最小的粘度增加证明了优异的抽取能力.
- 在断裂中达到高突破压力 (15.19 MPa) 并具有很好的适应污染,高盐度和高温.
- 在140°C下,在15%的HCl中具有97.69%的降解率.
结论:
- 开发的凝树脂复合物是一种稳定,高强度,环保的解决方案.
- 这种材料在工程应用中具有显著的潜力,用于减轻在具有挑战性的构成中钻井流体的损失.
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