On the development of high-frequency torsional impact drilling techniques for hard formation drilling
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DOI: 10.1177/1687814018781605
Abstract: Stick-slip vibration is a big problem that the drilling of deep wells has to face, especially for drilling of tough formations. This type of vibration leads to failure problems, reduces the rate of penetration, and… read more here.
Keywords: torsional impact; high frequency; impact drilling; frequency torsional ... See more keywords
Numerical simulation analysis of hybrid impact cutting and its comparison with torsional impact cutting
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DOI: 10.21595/jve.2019.20429
Abstract: Hybrid impact drilling is a new drilling method proposed in recent years, the PDC (polycrystalline diamond compact) bit impacts the rock in torsional and axial directions during its rotation. From the perspective of field application,… read more here.
Keywords: hybrid impact; impact; rock breaking; impact cutting ... See more keywords