螺杆钻具在地热井钻探中的应用初探

Application of Screw Drill in Geothermal Well Drilling

摘要:

螺杆钻具钻进因机械钻速高、经济效益明显而在石油、煤田地质等钻探施工中广泛使用，技术也比较成熟，但在地热井钻探施工中还处于摸索试验阶段。就螺杆钻具在地热井钻探中的设备配套、钻进工艺、效益对比等一系列问题进行了阐述，肯定了螺杆钻具在地热井钻探中的钻进效率和经济效益，同时提出了一些需要在今后实践中解决的问题。

Abstract:

Screw drill is a mature technology which is widely used in oil and coalfield geological drilling due to its high ROP and obvious economic benefit, but it is still at the experimental stage in the geothermal well drilling construction. The paper elaborates a series of issues of the equipment, drilling technology and the benefit comparison, affirms the drilling efficiency and economic benefits of screw drill in the geothermal drilling and puts forward some problems to be solved in future practice.