16
doi:10.3969/i. issn. 1009 3230.2017.02.004
应用能源技术
2017年第2期（总第230期）
煤层气井光杆密封材料研究
孙锋，杨林
（陇东学院，甘肃庆阳745000）
摘要：文中通过分析煤层气井并口盘根盒喷水原固，总体概括为偏磨、光杆受损的问题、密封材料的问题和排水管道的问题，抓住水从光杆和密封材料间隙喷出的源头，重点分析了传统橡胶制品（盘根)对排采水的密封原理和存在的问题，对盘根盒密封材料作出改进，从物性材质方面对比橡胶制品和棉纺织品，认为棉纺织品对水的密对性能远远超过橡胶制品：从力学性质方面，对普通盘根、维型盘根和棉纺织品在盘根盒中的受力情况分析对比，棉纺织品所受的摩擦力、径向压力、膨胀力均有利于排采水的密对，而且其柔软性也使得它不受形态影响，不受盘根金规格限制，填料空间足量充填，再结合现场应用到煤层气井上，密对时间成倍增长，密封效果得到明显改善。从成本方面分析单井用量，棉纺织品大大降低了排采经费，综合分析认为棉纺织品为最佳光杆密封材料。
关键调：煤层气；盘根盒；光杆；密封填料；棉纺织品
中图分类号：TE933.1
文献标志码：A
文章编号：1009-3230(2017)02-0016-04
StudyonSealingMaterialofCoalSeamGasWell
SUN Feng,YANG Lin
(LongdongUniversity,Qingyang745000,GansuProvince，China）
Abstract: This article through the analysis of coalbed methane well wellhead hydraulic reason of stuffing box, the overall summarized as eccentric wear, and the problems of polished rod is damaged, the problem of sealing material, and the problem of drainage pipeline, seize the water from the source of the polished rod and sealing material clearance, analyzed the traditional rubber products (stuffing) of high rank water sealing principle and the existing problems and make improvement on packing box sealing materials, from the aspects of material physical properties compared with rubber and cotton textiles, think cotton textiles for water sealing performance than rubber products; Terms of the mechanical properties of the ordinary packing, cone type packing in the packing box and cotton textiles force analysis contrast, cotton textiles,radial pressure, expansion of friction force are conducive to high rank water seal, and also makes it its softness is not affected by form, without being limited by the specification of stuffing box, the packing space enough filling, combined with field application to CBM inoue, sealing time exponentially, dramatically improve the sealing effect. From the aspects of cost analysis of single well dosage, cotton textiles greatly reduces the row of collected
funds, compreherisive analysis think cotton textiles for best polished rod sealing material. Key words: Coal bed methane; Packing box; The polished rod; Packing; Cotton textiles
引言 0
煤层气作为新能源，日益受到国家的关注。
收稿日期：20161215
修订日期：2017=01-11
作者简介：孙锋（1986-），男，大专毕业，助理工程师，现
从事排采工作。
万方数据
煤层气的开采是通过抽采煤层水降低煤层压力，将以吸附在煤基质颗粒表面为主并部分游离于煤层孔隙和溶解于煤层水中的甲烷气体解析出来的过程"]。