复合油井水泥早强剂LL的室内研究  

Laboratory Study of the Composite Oil-Well Cement Early Strength Agent LL

作　　者：梁路[1] 李丽华[1] 张金生[1] 王婧[1] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2014年第2期33-36,40,共5页Journal of Liaoning Petrochemical University

摘　　要：研制了一种复合型无氯油井水泥早强剂LL,采用复配的方法将有机酸D、醇胺类物质E和硝酸盐F按一定比例复配,利用正交试验设计以水泥石6h的抗压强度为考察指标优选试验配比。通过正交试验确定早强剂LL最佳配比为:有机酸D质量分数为1.0%(占水泥质量),醇胺类物质E质量分数为0.04%,硝酸盐F质量分数为4%。在最佳配比下,加入早强剂的质量为水泥质量的2.5%,结果表明,加入早强剂LL的水泥浆稠化时间与水泥净浆稠化时间之比为0.436,小于0.5、水泥石6h抗压强度(39℃、常压)为11.0MPa,大于4.0MPa,满足早强剂行业标准SY/T5004.4—2008的相关要求。与自制缓凝剂MAM、分散剂FASA及降失水剂AS等有良好的相容性。A chlorine-free composite as oil-well cement early strength agent named LL was developed.Combining organic acids A,alcohol amines B and nitrate compound C in a certain ratio,the compressive of cement stone in 6 h as the strength examining index can be designed in optimization test using the orthogonal method.The optimum formula determined by orthogonal was as follows：the weight of organic acids D is 1.0% based on cement,the weight of alcohols amines E is 0.04%, the weight of nitrates F is 4%.Under the optimum proportion,and the performance test of early strength agent LL was carried out after its addition of 2.5% in the cement.The ratio of the thickening time of early strength agent LL slurry to cement slurry is 0.436 less than 0.5,and the compressive strength of cement stone 6 h （39 ℃ and atmospheric pressure）is 11.0 MPa more than 4.0 MPa,they are all meeting the requirement of early strength agent industry standard SY/T5504.4-2008.And it has a good compatibility with the homemade retarders MAM,dispersants FASA and fluid loss AS.

关 键 词：早强剂 复配 油井水泥外加剂 配伍性 抗压强度 

分 类 号：TE662.1[石油与天然气工程—油气加工工程]