复合纤维改性水泥浆及性能探讨参考.docVIP

本科毕业设计（论文） 题目 复合纤维改性水泥浆及性能探讨 摘要 目前国内外油田开采环境、技术越来越复杂，对固井水泥浆（石）的性能要求也越来越高。本文针对近年来对纤维改性水泥浆体系研究中纤维掺量对性能影响规律、堵漏及失水性能测试等薄弱环节进行了探讨研究。 通过对陶瓷纤维、聚丙烯纤维改性水泥浆（石）抗折抗压、流变流动、失水和堵漏的实验测试，得出了：当陶瓷纤维与聚丙烯纤维掺量在0.2%左右时，其抗折抗压性能分别提升40%和30%以上达到最优值；纤维的掺量对于水泥浆失水率存在最佳加量；堵漏效果与纤维掺量在一定上限下成正比；水泥石提前收缩；复合改性缺陷等结果。由于其优异的改性性能，陶瓷、聚丙烯纤维水泥浆体系在固井工程有广阔的应用前景。 关键词：固井水泥 陶瓷纤维 聚丙烯纤维 性能 抗压抗折 堵漏 Abstract At present, oil field exploitation of the environment and technology get more and more complex at home and abroad, solid-water slurry (Stone) is forced higher and higher performance requirements. In this paper, modified in recent years on the fiber cement slurry system studies the impact the law of the impact of fiber content on the performance, plugging and water loss, such as weaknesses in performance make a tests conducted studies. paper chose the ceramic fiber and polypropylene fiber put into the oil well cement composites together as well as one by one, including rheology, flexural strength performance, loss of performance for optimization and research. Experiments come to the conclusion: When ceramic fiber and polypropylene fiber content of 0.2 %, its rheological properties did not deteriorate, and bending around a 40% increase in performance, compression performance of more than 30% ，this is the most valuable effect；Fiber cement’s slurry water content has the best rate of increase in the volume of existence; plugging effect of fiber content and the next is proportional to a certain limit; cement shrinkage in advance; complex defects, such as the result of modification. Modified due to its excellent performance, ceramic-polypropylene fiber slurry system works in the cementing broad application prospects. Keywords: Cement Ceramic-Fiber Polypropylene-fiber Properties resist-pressure Bending resistance plugging 目录 1绪论 1 1.1 课题研究背景 1 1.2固井、堵漏及油气井水泥 2 1.2.1固井 2 1.2.2堵漏 2 1.2.3油气井水泥 3 1.3纤维改性水泥浆研究现状 3 1.3.1国外研究现状 3 1.3.2国内研究现状 4 1.4研究思路 5 1.4.1纤维材料的选择 6 1.4.2纤维材料堵漏机理分析 6 1.4.3纤维材料增韧机理分析 7 1.5研