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引用本文:	马聪,步玉环,赵邵彪,陈兵,郭辛阳.固井用铝酸盐水泥改性试验研究[J].建筑材料学报,2015,18(1):100-106

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固井用铝酸盐水泥改性试验研究
马聪¹, 步玉环², 赵邵彪³, 陈兵¹, 郭辛阳²
1.上海交通大学土木工程系,上海200240;2.中国石油大学华东油气井工程系，山东青岛266580;3.长城钻探工程有限公司钻井三公司,辽宁盘锦124000

摘要:

针对铝酸盐水泥用于高温、高含CO2井固井时发生抗压强度衰退问题，分别研究了微硅、矿渣、粉煤灰、六偏磷酸钠及其复配对铝酸盐水泥抗压强度的影响.在优选100%（质量分数）六偏磷酸钠与75%（质量分数）微硅复配掺合料（ASS）改性基础上研究了碳纤维、聚丙烯腈纤维、聚酯纤维对改性铝酸盐水泥抗折强度的影响，并评价了掺03%（质量分数）碳纤维ASS改性铝酸盐水泥（ASSC改性铝酸盐水泥）的抗CO2腐蚀性能.结果表明：复配掺合料ASS对铝酸盐水泥各龄期抗压强度具有良好的增强作用，解决了铝酸盐水泥后期抗压强度倒缩问题；碳纤维对ASS改性铝酸盐水泥增韧效果明显，且对其抗压强度影响较小；ASSC改性铝酸盐水泥在高温、高CO2分压下长期养护50d后，其力学性能未发生衰退，并具有优秀的耐CO2腐蚀性能.

关键词: 改性铝酸盐水泥力学性能耐CO2腐蚀

DOI：103969/jissn1007 9629201501018

分类号:

基金项目:国家自然科学基金资助项目（51378309）;中国铁路总公司科技研究开发计划项目（2013G008 F）

Experimental Study on Modification of Aluminate Cement Used in Oil Well Cementing

MA Cong¹, BU Yuhuan², ZHAO Shaobiao³, CHEN Bing¹, GUO Xinyang²

1.Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China;2.Department of Oil and Gas Well Engineering, China University of PetroleumHuadong,Qingdao 266580, China;3th Drilling Company, GWDC, Panjing 124000, China

Abstract:

To solve the problem of the reduction of compressive strength of aluminate cement（HAC） used in high CO2 content oil well cementing, the influences of silica fume（SF）, slag（BFS）, fly ash（FA）, sodium hexametaphosphate(SHP) and their combined use on the compressive strength of aluminate cement were investigated. According to the experimental results, the combined admixture（ASS） composed of 100%（by mass） sodium hexametaphosphate and 75%（by mass） silica fume was optimized for modification of aluminate cement, and on this basis the impacts of carbon fiber（CF）, polyacrylonitrile fiber（PANF） and polyester fiber（PETF） on flexural strength of aluminate cement modified by ASS were studied. The CO2 resistant performance of aluminate cement modified by ASS with 03% carbon fiber added（aluminate cement modified by ASSC） was tested and analyzed. The results show that the combined admixture ASS has synergist effect on the compressive strength of aluminate cement, resulting the reduction of compressive strength at late period. Carbon fiber can enhance the flexural strength without adverse impact on compressive strength of aluminate cement modified by ASS. The aluminate cement modified by ASSC has outstanding CO2 resistant performance, and its mechanical property doesnt decline after curing at high temperature and high pCO2 for 50d.

Key words: modification aluminate cement mechanical property CO2 resistant