Results 181 to 190 of about 15,062 (254)

Numerical analysis on the drilling force of pneumatic impactors under different working conditions and structural parameters. [PDF]

Sci Rep
Li D, Tong L, Huang Z, Xu X, Wang S, Mao J, Zhu H, Deng Y, Chen X.   +8 more
europepmc   +1 more source

Research on rock breaking mechanism of PDC cutter under the action of ultrasonic vibration. [PDF]

PLoS One
Zhang R, Huang Z, Zhang Z, Han Y, Wang Z, Wang C, Yan Q.   +6 more
europepmc   +1 more source

A supervised machine learning model to select a cost-effective directional drilling tool. [PDF]

Sci Rep
Nour M, Elsayed SK, Mahmoud O.
europepmc   +1 more source

Naphthoquinone preferentially pairs with non-proton-pumping NADH dehydrogenase for respiratory electron transport. [PDF]

PLoS Genet
Khairnar SV, Patil AV, Karvannan L, Anand A.   +3 more
europepmc   +1 more source

Improved Drilling Efficiency Technique Using Integrated PDM and PDC Bit Parameters

, 2010
H. Motahhari, G. Hareland, J.A. James
openalex   +1 more source

Study on the mechanism of multidimensional cutting teeth and the influencing factors of rock breaking efficiency. [PDF]

PLoS One
Chen L, Li D, He J, Meng L, Chi Q, Li G, Chen W, Zhao Y, Yi X, Xia C.   +9 more
europepmc   +1 more source

An intelligent approach to predict the drilling penetration rate using acoustic emission technique (AET). [PDF]

Sci Rep
Khoshouei M, Bagherpour R, Jalalian MH, Purhamadani E.   +3 more
europepmc   +1 more source

Measurement and analysis of chatter in a compliant model of a drillstring equipped with a PDC bit

, 1999
El-Sayed
openalex   +1 more source

Sediment generation through thermal spalling during the 2021 montiferru planargia wildfire and its contribution to postfire debris flows. [PDF]

Sci Rep
Pala C, Melis MT, Pioli L, Sarro R, Loddo S, Cinus S, Brunetti MT.   +6 more
europepmc   +1 more source