Results 81 to 90 of about 194,053 (216)
Key Technology for Drilling Speed Improvement of High Abrasive Formation in Aktobe
Shiyou jixie, 2018 The Zahnanor and North Tluwa oil field in the Aktobe area are rich in oil and gas resources. The main oil and gas reservoirs are located in the Carboniferous strata below the Permian.
Wang Gang +6 more
doaj
Comparative Study of Percussion Drilling in Glasses with a Femtosecond Laser in Single Pulse, MHz-Burst, and GHz-Burst Regimes and Optimization of the Hole Aspect Ratio. [PDF]
Micromachines (Basel), 2023 Balage P +6 more
europepmc +1 more source
Process Parameter Prediction and Modeling of Laser Percussion Drilling by Artificial Neural Networks. [PDF]
Micromachines (Basel), 2022 Wang CS, Hsiao YH, Chang HY, Chang YJ.
europepmc +1 more source
Energy Transmission in Percussive Drilling [PDF]
Fall Meeting of the Society of Petroleum Engineers of AIME, 1959 Abstract A simple analysis of the mechanics of stress and energy transmission in percussive drilling is presented. Four basic components of the system are recognized:the hammer,the drill rod,the bit, andthe rock and the effect of each in determining the ultimate energy transmitted into the rock is considered.
openaire +1 more source
University Percussion Ensemble, April 2, 1986
, 2016 Recorded during a live performance at Dalton Center Recital Hall, Western Michigan University, Kalamazoo, Michigan, April 2, 1986, 2:00 p.m., the 312th concert of the School of Music’s 1985-1986 season.Members of the University Percussion Ensemble in ...
Western Michigan University. Percussion Ensemble
core
Computer simulation of percussive drilling.
Shigen-to-Sozai, 1991 A drilling model which consists of drill-body, piston, rod and bit is presented. The model is based on onedimensional stress-wave theory for piston, rod and bit. A force/penetration relationship with hysteresis is assumed for bit/rock interaction. A computer program based on the model is also developed which allows continuous simulation of drilling ...
OKUBO, Seisuke, NISHIMATSU, Yuichi
openaire +2 more sources
University Percussion Ensemble, April 15, 1981
, 2019 Recorded during a live performance at Oakland Recital Hall, Western Michigan University, Kalamazoo, Michigan on April 15, 1981, 8:00 p.m., program no. 354 of the School of Music's 1980-1981 season.University Percussion Ensemble, Michael Varner, director ;
Western Michigan University. Percussion Ensemble
core
, 2013 <p>The Costa Rica Seismogenesis Project (CRISP) was designed to elucidate processes that control nucleation and seismic rupture of large earthquakes at erosional subduction zones. The CRISP study area is located offshore the Osa Peninsula where the
Burkett, Ashley +33 more
core +1 more source
University Percussion Ensemble, March 16, 1975
, 2017 Recorded during a live performance at Oakland Recital Hall, Western Michigan University, Kalamazoo, Michigan, March 16, 1975, program no. 188 of the Department of Music’s 1974-1975 season.University Percussion Ensemble, Don Baker, director ; Terry Turner,
Western Michigan University. Percussion Ensemble
core
Steerable percussion air drilling system [PDF]
, 1995 In the Steerable Percussion Air Drilling System (SPADS), air percussion is used to drill directionally in hard formations. Compared to mud or air powered PDM motors, SPADS offers directional drilling at high penetration rate, reduced mud costs ...
Gray, M.A., Oliver, M.S., Bui, H.D.
core