空气螺杆钻具限速阀设计及流场数值模拟  

Design of the Air Screwdrill Governor Valve and Numerical Simulation of the Flow Field

作　　者：王勇[1,2] 石昌帅[3] 祝效华[3] 张国伟[2] 

机构地区：[1]中国石油大学(华东)石油工程学院 [2]胜利石油管理局黄河钻井总公司管具公司 [3]西南石油大学机电工程学院

出　　处：《石油机械》2013年第10期29-32,共4页China Petroleum Machinery

基　　金：胜利石油管理局2010年产业化项目"复合钻进用高性能螺杆钻具的研制"(GC1004)

摘　　要：针对空气螺杆钻具在应用过程中存在的"飞车"问题,通过流场模拟探讨了采用空气限速阀分流和解决"飞车"问题的可行性。流场模拟结果表明,带有空气限速阀的容腔内气体流速比无空气限速阀的容腔内气体流速降低了约22%;无空气限速阀的空气螺杆钻具内部压降约为247.0 Pa,带有空气限速阀的空气螺杆钻具压降约为345.2 Pa,其压降增加约28.5%。同时指出,使用空气限速阀可以实现流体分流,增加压降,防止气体膨胀,还可以延长空气螺杆钻具使用寿命,降低钻井成本。In light of the ＂runaway＂ problem existing in the process of applying air screwdrill, the flow field simulation was used to explore the feasibility of adopting the air screwdrill governor valve to solve this problem. The flow field simulation shows that the gas flowrate within the cavity with air governor valve decreases by 22%, compared with that without the valve. The pressure drop within air screwdrill without the valve is about 247.0 Pa. The pressure drop within air screwdrill with the valve is about 345.2 Pa and the pressure drop increases by about 28.5%. At the same time, it is pointed out that use of the valve can achieve fluid shunt, increase pressure drop and prevent gas expansion. It can also lengthen the service life of air screwdrill and reduce the drilling cost.

关 键 词：空气钻井 螺杆钻具 限速阀 流场 数值模拟 

分 类 号：TE921[石油与天然气工程—石油机械设备]