小间距双井水溶造腔腔体扩展特性

发布时间：2018-04-05 02:38

本文选题：盐岩　切入点：水溶造腔　出处：《东北大学学报(自然科学版)》2017年11期

【摘要】：搭建了小井间距双井水溶造腔的实验装置,通过室内模型实验的方法研究了不同提管方式时溶腔腔体扩展的变化规律,并与单井造腔工艺进行了对比.结果表明:只提注水管时,腔体体积增长速率大于另外两种提管方式,最终形成的腔体体积也最大;不同提管方式对盐壁的溶解速率影响较小,腔底形成的溶蚀角相差也不大;同时提两管与只提注水管形成腔体形状为"船"形,提油垫时形成底部区域很大而上部为两个"塔"形的腔体形状;与单井造腔技术相比,小井间距双井水溶造腔技术在造腔前期具有较大的优势.
[Abstract]:In this paper, the experimental device of water dissolution cavity in two wells with small well spacing is built, and the variation law of cavity expansion under different lifting modes is studied by laboratory model experiment, and compared with that of single well cavity making process.The results show that the volume growth rate of the cavity is larger than that of the other two ways, and the volume of the cavity formed is the largest, and the dissolution rate of the salt wall is less affected by the different lifting ways, and the dissolution angle formed at the bottom of the cavity is not different.At the same time, the two tubing and the only water injection pipe formed the cavity shape of "boat" shape, and formed the cavity shape with large bottom area and two "tower" shape in the upper part when the oil cushion was lifted, which was compared with single well cavity making technology.The technology of water solution cavities with small spacing and double wells has a great advantage in the early stage of cavity formation.
【作者单位】：重庆大学煤矿灾害动力学与控制国家重点实验室;
【基金】：教育部高等学校博士学科点专项科研基金资助项目(20130191130003) 国家自然科学基金青年基金资助项目(51204216)
【分类号】：TE82

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