1. A bit of history: overcoming early setbacks, PDC bits now drill 90%-plus of worldwide footage;Dan;Drilling contractor,2015
2. International advancement of drilling bits for oil and gas well (III)——PDC bits progress and present trend (I);Zuo;Exploration Engineering (Rock & Soil Drilling and Tunneling),2016
3. On measures for treating PDC bit bailing and new type of bits against bailing-Up;Yu;Journal of Jianghan Petroleum University of Staff and Workers,2013