活塞式井下增压器设计理论研究  

Study of design theory of piston-type downhole booster

作　　者：汪志明[1] 薛亮[1] 邹和均[2] 谢涛[2] 

机构地区：[1]中国石油大学(北京)石油天然气工程学院 [2]吐哈石油勘探开发指挥部钻井公司

出　　处：《石油机械》2007年第11期17-19,80-81,共3页China Petroleum Machinery

基　　金：教育部创新团队研究项目(IRT411)

摘　　要：针对活塞式井底增压器设计中存在的问题探讨了射流式井底增压器的增压原理、设计理论和机械效率。认为井底增压器利用流体静力学原理,在活塞上、下腔形成压力差,驱动活塞往复运动,以钻井液为工作介质,通过把钻井液的压力能转换为机械能,再把机械能转换为一小部分钻井液的压力能的方法实现增压功能;增压器性能取决于活塞上、下腔压力差和增压比,提高上、下腔压力差可以采用2级活塞并联的形式,得出的结论对增压器设计具有指导意义。Downhole booster is the key technique of jet flow at ultrahigh pressure. Drilling speed can be increased with jet flow at ultrahigh pressure. In the paper, the design theory and mechanical efficiency of the booster are discussed. And the results show that hydrostatics is the basis of design theory of piston-type booster. The output pressure is decided by the pressure difference and boost ratio. Two piston cylinders can improve output pressure. The mechanical efficiency of piston-type booster is high. The above studies play a guide role in designing the downhole booster.

关 键 词：射流式井底增压器 流体静力学 增压比 机械效率 水力损失 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]