紧密堆积优化固井水泥浆体系堆积密实度

发布时间：2018-10-17 16:35

【摘要】：紧密堆积技术是高性能固井水泥浆体系设计关键技术,对提高固井水泥浆性能具有重要意义,其核心是提高颗粒体系的堆积密实度。为此,选用可压缩堆积模型作为紧密堆积理论模型,确定了模型参数和数值计算方法,编制了堆积密实度计算程序并对计算结果进行了验证;通过计算多元颗粒体系的堆积密实度,对影响颗粒体系堆积密实度的因素进行了分析,并进行了水泥浆设计和性能试验。研究结果表明,适当增加超细颗粒组分、合理优化粒径分布区间、提高颗粒体系的大小颗粒平均粒径比可以有效提高堆积密度,相比三元体系,含有纳米材料的五元体系可达到颗粒体系的最紧密堆积,水泥浆性能更好。利用紧密堆积模型指导油井水泥体系干混配比设计具有可行性。
[Abstract]:Tight accumulation technology is the key technology of high-performance solid well water slurry system design. It is of great significance to improve the performance of cementing slurry, and its core is to improve the packing density of the particle system. For this purpose, a compressible build-up model is used as the compact stacking theory model, the model parameters and numerical calculation methods are determined, the calculation program of bulk density is prepared and the calculation results are verified, and the bulk density of the multi-particle system is calculated. The factors affecting the bulk density of the particle system were analyzed, and the cement slurry design and performance test were carried out. The results show that the average particle size ratio of the particle system can be improved by appropriately increasing the ultrafine particle component, optimizing the particle size distribution area, increasing the average particle size ratio of the particle system, and comparing with the ternary system, the five-quinary system containing the nano material can reach the closest packing of the particle system, The cement slurry has better performance. It is feasible to guide the dry-mixing ratio design of oil well cement system with tight accumulation model.
【作者单位】：中国石油集团海洋工程有限公司渤星公司;CNPC钻井工程重点实验室固井技术研究室;中国石油集团海洋工程有限公司工程设计院;
【基金】：中国石油天然气集团公司课题“枯竭油气藏型储气库固井技术与压缩机组现场试验”(编号:2014F-1501)和“井筒工作液新材料新体系基础研究”(编号:2016A-3903)部分研究成果
【分类号】：TE256.6

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