Results 81 to 90 of about 565,672 (242)

A study on PDC drill bits quality [PDF]

, 2013
The quality of innovating PDC (Polycrystalline Diamond Compact) bits materials needs to be determined with accuracy by measuring cutting efficiency and wear rate, both related to the overall mechanical properties.
A. Dourfaye, Akhaishi, Bellin, Bovenkerk, Chen, Crank, de la Pena O'Shea, Detournay, Ersoy, Hong, Ishida, J. Denape, J.-Y. Paris, L. Gerbaud, M. Yahiaoui, Qi, Wojtanowicz   +16 more
core   +5 more sources

Radial Filtration of Drilling Muds [PDF]

, 1940
Milton Williams
openalex   +1 more source

Study on micro drilling of printed circuit board using DLC coated drill

Nihon Kikai Gakkai ronbunshu, 2017
In recent years, needs for micro drilling are increasing, accompanying the development of higher wiring density of printed circuit board (PCB). When drilling PCB for the purpose of making the electric through holes, it has been said that the drill ...
Hiromi YOSHIMURA, Kyohei HORITA, Yukiyoshi HOSHI, Katsuhiro NAGASAWA   +3 more
doaj   +1 more source

Underreamer mechanics [PDF]

, 2009
In the oil and gas industry, an underreamer is a tool used to extend and enlarge the diameter of a previously-drilled bore. The problem proposed to the Study Group is to obtain appropriate mathematical models of underreamer dynamics, in forms that will ...
Barton, David, Coskun, Erhan, Hall, Cameron, Jones, Marvin, Lacey, Andrew, Lorenz, Maike, Maringer, Johannes, Please, Colin, Richardson, Giles   +8 more
core  

Improved Methods of Deep Drilling in the Coalinga Oil Field, California [PDF]

, 1916
Mariarosaria Lombardi
openalex   +1 more source

Records of wells drilled for oil and gas in Montana [PDF]

, 1952
James David Vine, C.E. Erdmann
openalex   +1 more source

Radial Filtration of Drilling Mud [PDF]

, 1952
C.L. Prokop
openalex   +1 more source

The Effect of Drill Design Elements on Drilling Characteristics when Drilling Bone

Journal of Biomechanical Science and Engineering, 2010
Twist drills are often used to prepare implant sites for the internal fixation of fractures, and the stability of the fixation, which depends directly on how securely the implants are held, depends on the quality of the bone around the pilot holes after implant site preparation.
Toshiaki Hara, Tadamaru Ueda, Kenichi Hasegawa, Yasuyuki Endo, Takanori Hasegawa, Yoshihiro Takikawa, Atsushi Wada   +6 more
openaire   +4 more sources

Effects of Input Parameters on the Hole Quality During the Drilling of Al Metal Matrix Composites

Designs
The extensive industrial applications of aluminum (Al) metal matrix composites (MMCs) require optimal drilling conditions in the manufacturing industries.
Alokesh Pramanik, Animesh Kumar Basak
doaj   +1 more source

Record of deep-well drilling for 1904 [PDF]

, 1905
Myron L. Fuller, Samuel Sanford
openalex   +1 more source