Results 111 to 120 of about 14,048 (222)

Model-Driven Processing of Passive Seismic While Drilling Data Acquired Using Distributed Acoustic Sensing Without Conventional Drill-Bit Pilot Measurements. [PDF]

Sensors (Basel)
Al-Hemyari E, Pevzner R, Tertyshnikov K.
europepmc   +1 more source

Genetic evidence for a periplasmic protein as a third component for a subset of NtrYX family two-component systems. [PDF]

J Bacteriol
Wolber AR, McKay LS, Johnson RM, Hameed ZT, Mote KB, Julio SM, Cotter PA.   +6 more
europepmc   +1 more source

Influence mechanism of polycrystalline diamond compact bit temperature rise based on thermo-fluid-solid coupling. [PDF]

Sci Prog, 2023
Han X, Xue L, Xu J.
europepmc   +1 more source

Rake angle optimization for balanced efficiency and durability in PDC cutter cutting granite interaction via infrared thermal dynamics and fragmentation mechanism. [PDF]

Sci Rep
He X, Zheng B, Luo Z, Hu P, Yang Y, Yin G.   +5 more
europepmc   +1 more source

Predicting porosity in tight sandstone reservoirs based on logging while drilling engineering parameters. [PDF]

Sci Rep
Xue D, Zhang L, Liu Z, Li H, Li J, Jiang C.   +5 more
europepmc   +1 more source

Research on the type and expansion mechanism of internal cracks in rocks under the action of PDC. [PDF]

Sci Rep
Liang Y, Du B, Ren J, Feng S.
europepmc   +1 more source

Vibration behavior analysis of reamers based on drill string dynamics. [PDF]

Sci Rep
Fusheng Y, Yuchun K, Bin L, Qianwen C, Ming S.   +4 more
europepmc   +1 more source

Numerical simulation study of gas-solid two-phase flow characteristics in borehole sampling of coal cuttings. [PDF]

PLoS One
Xue S, Zhang L, Zheng X, Gao C, Liu S.
europepmc   +1 more source

Challenges of drilling Iran's deepest surface hole in the saddle section of Changuleh oilfield with complex structure and pressure regimes. [PDF]

Sci Rep
Jamshidi E, Saen S, Golshaghagh J, Kianoush P, Adib A, Mohammadi A.   +5 more
europepmc   +1 more source

The impact of multidirectional excitation on the stick-slip vibration characteristics of a drill string. [PDF]

Sci Rep
Hongshan Z, Wenchang W, Kaixian A.
europepmc   +1 more source