Abstract: The paper introduces the structure,working principle and absorbing water capablitity.Through test and actual application shows that i t can fulfill the requirement of reacting cycle drilling well.

• 文摘:介绍双缸拉杆活塞泵的结构、工作原理及吸水能力，并通过实验和现场使用，证明其能满足反循环式钻井的要求。