Results 141 to 150 of about 257 (165)

Study on the technology and application of cooperative roadway protection with roof cutting pressure relief and CO₂ mineralization and filling. [PDF]

Sci Rep
Deng G, Li H.
europepmc   +1 more source

Research and Application of the Deviation Reduction Mechanism in Stratified Cutting Drilling of Soft-Fragmented Coal Seams. [PDF]

ACS Omega
Wang Y, Zhao A, Yu Z, Guo J, Du K, Ma D.
europepmc   +1 more source

Research on Obstacle-Avoidance Trajectory Planning for Drill and Anchor Materials Handling by a Mechanical Arm on a Coal Mine Drilling and Anchoring Robot. [PDF]

Sensors (Basel)
Sun S, Mao S, Xue X, Wang C, Ma H, Guo Y, Yuan H, Su H.   +7 more
europepmc   +1 more source

Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq. [PDF]

Sci Rep
Al-Dujaili AN, Asad MS, Saeed N, Tileuberdi N.   +3 more
europepmc   +1 more source

Optimization and analysis of rib working resistance in push-the-bit rotary steerable drilling system. [PDF]

PLoS One
Jia J, Sun Y, Gao K, Zhao Y, Li B, Li X.
europepmc   +1 more source

Mechanism and field validation of fly-ash grouting for mitigating mining-induced surface subsidence. [PDF]

Sci Rep
Ding C, Qin Y, Cao C.
europepmc   +1 more source

Evaluation of Closely Spaced Infill Wells in Unconventional Mature Coalbed Methane Field: A Simulation Approach. [PDF]

ACS Omega
More AR, Patwardhan SD.
europepmc   +1 more source

Research on Remote and Near-Field Gas Collaborative Joint Control Technology in Coal and Gas Outburst Coal Seam. [PDF]

ACS Omega
Liu Z, Zhang S, Li X, Cai J, Chen S.
europepmc   +1 more source

Numerical modeling and the ultimate bending experiment of the directional drill pipes bending at the dog-leg of the multi-branch well. [PDF]

Heliyon
Zhang Y, Shu J.
europepmc   +1 more source

Physical Simulation Experiment on the Rock Breaking Efficiency of Pulse Type Controllable Shock Wave. [PDF]

ACS Omega
Wang S, Zhang S, Ma L, Zhao Y, Gao L, Cao Y, Xie P.   +6 more
europepmc   +1 more source