反循环迴转钻进方法

• 作 者: 杨志豪
• 出 处: 探矿工程
• 发表日期: 1979年06期
• 关键词: 钻进方法 反循环钻进 空气升液器 反循环 活塞泵 冲洗液 柱塞泵 岩粉 气举反循环 循环过程

反循环钻进方法是近十几年中发展起来的一种钻进方法。在反循环钻进中，冲洗液从钻孔或双管的环状间隙中流向孔底，然后再从钻杆中流出孔外，进入泥浆池。在循环过程中，岩粉或岩块随着冲洗液被带出孔外。冲洗液的循环是通过各种类型的泵（活塞泵、柱塞泵、离心泵、喷水泵或空气升液器）来完成的。

Reverse circulation drilling method is developed in the past ten years a drilling method. In reverse circulation drilling, the flushing fluid flows from the annular gap of the borehole or double pipe to the bottom of the hole, and then flows out of the hole in the drill pipe to enter the mud pool. During circulation, the rock dust or rock mass is taken out of the hole with the flushing fluid. The rinsing fluid is circulated through various types of pumps (piston pump, plunger pump, centrifugal pump, water jet pump or airlift).