涡流工具排水采气技术研究  

Research on Water Drainage and Gas Recovery Technology by Vortex Tool

作　　者：刘凯[1] 孙丽艳[2] 

机构地区：[1]沈阳航空航天大学航空航天工程学院 [2]沈阳黎明航空发动机集团有限责任公司

出　　处：《石油机械》2017年第9期87-91,共5页China Petroleum Machinery

基　　金：国家自然科学基金项目"环形燃烧室排放产物化学动力学研究"(51376133);航空科学基金项目"高温升喷嘴低污染抗结焦技术研究"(2015ZB54003)

摘　　要：涡流排水采气技术可明显降低临界产量,增加产水和产气量,进而延长气井寿命,然涡流工具几何参数较多,对工况变化敏感,各参数间的相互影响关系不清。为此,采用数值模拟、地面试验和井下试验相结合的手段,研究了涡流工具各几何参数对不同工况的适应规律。分析结果表明:各工况下涡流工具螺旋角50°和55°均具有较好的旋流特性和损失特性,为首选螺旋角;涡流工具中心体直径与所适应产气量有直接相关性,中心体直径每增加1 mm可使最低产气量降低15%~20%;螺旋线宽度不会影响涡流工具对产气量的适应范围,但会影响工具的作用距离。所得结论可为涡流工具的设计和现场应用提供参考依据。The vortex water drainage and gas recovery by can significantly reduce the critical production, in-crease the water and gas production, and prolong the life of the gas wells. However, the geometrical parameters of the vortex tool are numerous and have unclear relation to each other and sensitive to the change of the working con-ditions. The geometrical parameters of the vortex tool are studied b y means of numerical simulation, ground test and downhole test. The results show that the vortex tool has a good swirl characteristics and loss characteristics under the helix angle of 50° and 55°, which are the preferred helix angles. The diameter of the center body of the vortex tool is direcdy related to the accommodated gas production. Every 1 mm increase in the diameter of the center body can reduce the minimum gas production by 15% to 20%. The spiral width has no effect on gas production range of the vortex tool, but will influence the tool＇s effective distance. The study conclusion can provide references for the de-sign and field application of vortex tool.

关 键 词：涡流工具 排水采气 气井 作用距离 螺旋角 旋流特性 

分 类 号：TE934[石油与天然气工程—石油机械设备]