抗高温硅酸盐水泥浆体系研究

发布时间：2018-02-03 17:24

本文关键词： 硅酸盐水泥高温韧性固井固井质量　出处：《钻井液与完井液》2017年05期 　论文类型：期刊论文

【摘要】：针对高温条件下,常规硅酸盐加砂水泥浆体系存在的稳定性差、水泥石抗压强度衰退和开裂等问题,有针对性地开展了水泥高温增强材料优选、水泥石力学性能优化和抗高温硅酸盐水泥浆体系综合性能优化等研究,结果表明,高温条件下,掺加火山灰类高活性矿物材料能保证水泥石抗压强度良好发展,无衰退现象;优选的晶须/纤维材料对水泥石"降脆、增韧"作用显著,水泥石高温养护无开裂现象,且弹性模量能控制在9.0 GPa以内;通过配套使用高性能抗高温降失水剂、缓凝剂和高温稳定剂等外加剂,水泥浆体系综合性能良好,具有低失水、高温稳定性好、稠化时间可调、过渡时间短等特点。该研究成果对保证深井、超深井固井安全,提高固井质量具有重要意义。
[Abstract]:Aiming at the problems of poor stability of conventional Portland sand cement slurry system, degradation of compressive strength and cracking of cement stone under high temperature, the optimum selection of high temperature cement reinforcement materials was carried out. The optimization of mechanical properties of cement stone and the optimization of comprehensive performance of high temperature silicate cement slurry system are studied. The results show that the high active mineral material with pozzolanic ash can ensure the good development of compressive strength of cement stone under high temperature conditions. No decline; The optimized whisker / fiber material has a significant effect on the "brittle and toughening" of cement stone. The cement stone has no cracking phenomenon at high temperature and its elastic modulus can be controlled within 9.0 GPa. The cement slurry system has good comprehensive performance, low water loss, good high temperature stability and adjustable thickening time through the use of high performance high temperature water reducing agent, retarder and high temperature stabilizer and other admixtures. The research results are of great significance to ensure the cementing safety of deep and ultra-deep wells and to improve cementing quality.
【作者单位】：中国石油集团钻井工程技术研究院;大庆钻探工程公司钻井生产技术服务二公司;中国石油集团西部钻探公司准东钻井公司;中国石油冀东油田分公司勘探开发建设项目部;
【基金】：“十三五”国家重点研发计划课题二“固井工程用高耐蚀高韧性水泥基材料的研究与应用”(2016YFB0303600)
【分类号】：TE256
【正文快照】： 3.中国石油集团西部钻探公司准东钻井公司,新疆昌吉831500;4.中国石油冀东油田分公司勘探开发建设项目部,河北唐山063200)张弛,陈小旭,李长坤,等.抗高温硅酸盐水泥浆体系研究[J].钻井液与完井液,2017,34(5):62-66.ZHANG Chi,CHEN Xiaoxu,LI Changkun,et al.Study of high temp

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