Results 151 to 160 of about 392 (235)

Investigation of Cuttings Transport in a Reverse Circulation Drill Bit during Direction Drilling Using Two-Phase Flow Simulation. [PDF]

ACS Omega
Cui G, Cao P, Wang M, Wang X, Chen D, Qi B.   +5 more
europepmc   +1 more source

Sensing While Drilling and Intelligent Monitoring Technology: Research Progress and Application Prospects. [PDF]

Sensors (Basel)
Li X, Yao Z, Zhang T, Chang Z.
europepmc   +1 more source

Novel Torque and Drag Model for Drilling Two-Dimensional High-Angle Wells. [PDF]

ACS Omega, 2022
Nour M, Elgibaly AA, Farahat MS, Mahmoud O.   +3 more
europepmc   +1 more source

Mechanism of coal mass fracture expansion under drilling and pressure relief. [PDF]

Sci Rep
Liu K, Liu Y, Lu CP, Zhou LH, Zhou QX, Wang C.   +5 more
europepmc   +1 more source

A novel neural-evolutionary framework for predicting weight on the bit in drilling operations. [PDF]

Sci Rep, 2023
Dowlatabadi M, Azizi S, Dehbashi M, Sadeqi H.   +3 more
europepmc   +1 more source

Reasonable drilling angle and technology application for pre-cracking thick-hard roofs before driving gob-side roadways in ultra-thick seams. [PDF]

Sci Rep
He F, Wu Y, Wang D, Zhang J, Tao K.
europepmc   +1 more source

Research on mechanism and control technique of floor heave in deep soft rock roadway at Banji Coal Mine. [PDF]

Sci Rep
Zhang X, Jing L, Dong H, He H, Lv J, Sun M, Fan Y.   +6 more
europepmc   +1 more source

Analysis of the effect of stabilizer configuration on reamer vibration suppression. [PDF]

Sci Prog
Yu F, Kuang Y, Li B.
europepmc   +1 more source

Study on vibration characteristics of roadheader cutting pre-cracked hard rock. [PDF]

Sci Rep
Liu H, Li F, He J, Wang W, Zhang H.
europepmc   +1 more source

Rotary cutting test on rock-breaking mechanism and efficiency of milled-tooth rolling cutters for shaft sinking by drilling methods. [PDF]

Sci Rep
Wang X, Cheng H, Lin J, Yao Z, Guo L, Zhang L.   +5 more
europepmc   +1 more source