reverse circulation

Hydro-reverse Circulation Continuous Coring ( Sampling) Technique and SF-1 Drill

水力反循环连续取心（样）钻探技术和SF-1型钻探设备

This paper describes the theory, features and testing results of the air reverse circulation drilling process used in geo physical blast hole drilling.

概述了空气反循环钻进工艺应用于物探爆破孔施工的原理、特点及其试验应用情况。

Application of Air-lift Reverse Circulation Drilling Technology for Resolving Well Drilling Problems

应用气举反循环钻进工艺成功解决钻井施工疑难技术问题

Reverse circulation well control method and its calculation in slim hole

适应小井眼的反循环井控方法及其计算

The author has made an exposition of the theory of airlift reverse circulation machines and tools, and its making way as well, which has solved the construction technical difficulty.

本文着重阐述了气举反循环理论和机具制做方法，从而解决了在岩溶发育地区的施工技术难题。

Testing of the Air Reverse Circulation Drilling Process in Geo physical Blast hole Drilling

空气反循环钻进工艺在物探爆破孔施工中的试验应用研究

Experimental Research on Reverse Circulation Drilling with Through-type DTH Hammer for Water Well Drilling in Karst Strata

贯通式潜孔锤在岩溶地层反循环水文水井钻进试验研究

Drilling process analysis of the CJF 20 percussion drill rig of reverse circulation

CJF-20冲击反循环钻机钻进工艺技术分析

APPLICATION OF THE PERCUSSIVE REVERSE CIRCULATION DRILLING IN DRILLING A LARGE DIAMETER PILING EMBEDDED ROCK Status Quo and Trend of Percussive Reverse Circulation Pile Hole Drill Rigs in China

冲击反循环技术装备在大口径嵌岩钻进中的应用我国冲击反循环桩孔钻机现状与发展

Fuzzy Control of Automatic Drilling of Drum-type Percussive Reverse Circulation Drilling Machines

卷筒式冲击反循环钻机自动钻进的模糊控制

Development of Self Moving Reverse Circulation Rig GFC-120

GFC-120型自走式反循环钻机的研制

Study on Fluid Velocity at The Hole Bottom in Large Diameter Reverse Circulation Rotary Drilling

大直径反循环回转钻井底冲洗液流速的研究

Experimental and Drill Bit Flow Field Analyze of Run-through DTH Reverse Circulation Drilling Technique

贯通式潜孔锤反循环钻进技术试验及钻头流场分析