Experimental investigation of drillstring torsional vibration effect on rate of penetration with PDC bits in hard rock

•Conventional laboratory testing overestimates bit performance.•The effect of drillstring torsional vibration decreases with increasing speed.•Energy delivered to the bit is controlled by the drillstring configuration. Polycrystalline diamond compact (PDC) bits have shown tremendous performance comp...

Full description

Saved in:
Bibliographic Details
Published in:Geothermics 2022-07, Vol.103, p.102410, Article 102410
Main Authors: Barnett, Laymon, Al Dushaishi, Mohammed F., Mubarak Hussain Khan, Mohammad Faraz
Format: Article
Language:English
Subjects:
Bit rock interaction
Diamond tools
Drilling
Drilling performance
Drillstring vibrations
Drillstrings
Geothermal Drilling
GEOTHERMAL ENERGY
Geothermal power
Laboratory tests
PDC bit
Penetration
Polycrystalline diamond
Test facilities
Torsional vibration
Vibration
Vibration effects
Vibrations
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Conventional laboratory testing overestimates bit performance.•The effect of drillstring torsional vibration decreases with increasing speed.•Energy delivered to the bit is controlled by the drillstring configuration. Polycrystalline diamond compact (PDC) bits have shown tremendous performance compared to roller cone bits and have gained attraction in deep geothermal drilling applications. While PDC bits can reach a higher rate of penetration compared to other bits, they are more prone to drilling vibrations. The scope of this paper is to quantify the effects of drillstring torsional vibrations on PDC bit performance using a laboratory testing facility. The tests were performed with three drillstring configurations to evaluate the effect of drillstring vibrations. The results showed that rigid testing overestimates the bit rate of penetration by 35% due to torsional vibrations.
ISSN:0375-6505
1879-3576
DOI:10.1016/j.geothermics.2022.102410