新型固井用防水窜材料的研究与性能评价

发布时间：2018-05-18 21:04

本文选题：固井 + 水窜　；参考：《钻井液与完井液》2017年04期

【摘要】：固井水窜问题是各油田普遍存在的技术难题,目前缺乏有效的解决办法。针对以上问题,从水泥浆体系出发,首先进行了防水窜材料的结构设计,然后根据结构设计,筛选出相应的防水窜原材料,并通过对其合理的复配研究,制备出了一种新型固井用防水窜材料。实验根据固井不同阶段的水窜机理,采用相应的方式对该材料的防水窜效果进行了评价,结果显示开发的防水窜材料可增加水泥浆内部结构,缩短静胶凝过渡时间,避免水泥石收缩,从而避免水泥浆在不同阶段发生水窜。另外,综合评价结果表明,新型固井防水窜材料可缩短稠化时间、增加水泥石强度,改善水泥浆稳定性,且对水泥浆稠化、流变、失水等性能无不良影响,综合性能良好。
[Abstract]:The problem of cementing water channeling is a common technical problem in various oilfields, and there is a lack of effective solution at present. In view of the above problems, starting from the cement slurry system, the structural design of the waterproof channeling material is first carried out, and then the corresponding waterproof channeling raw materials are screened according to the structural design, and the reasonable compound research is carried out. A new waterproof material for well cementing was prepared. According to the mechanism of water channeling in different stages of cementing, the waterproofing channeling effect of this material is evaluated in a corresponding way. The results show that the developed waterproof channeling material can increase the internal structure of cement slurry and shorten the transition time of static cementing. Avoid shrinkage of cement stone and avoid water channeling in different stages of cement slurry. In addition, the comprehensive evaluation results show that the new cementing waterproof and channeling material can shorten the thickening time, increase the strength of cement stone, improve the stability of cement slurry, and have no adverse effect on the properties of cement slurry, such as thickening, rheology and water loss, and the comprehensive performance is good.
【作者单位】：中国石油集团海洋工程有限公司渤星公司;西部钻探青海钻井公司;
【分类号】：TE256

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