Results 111 to 120 of about 565,672 (242)
Axial Vibration Analysis on Drillstring [PDF]
, 2015 The problem of drill string vibration occurs in drilling operations and it will affect the usage life of drill pipe and drill bits. Three types of vibration, which are axial, lateral and torsional vibrations exist in the drill string.
HOW, KEK JIA
core
Bikini and nearby atolls, Marshall Islands; paleontology : Smaller Foraminifera from Bikini drill holes [PDF]
, 1954 Ruth Todd, Rita Post
openalex +1 more source
Well Drilling and Latrine Construction in Rural Burma [PDF]
, 1954 Clarence J. Feldhake
openalex +1 more source
Drill/borescope System for the Mars Polar Pathfinder [PDF]
The primary goals of the Mars Polar Pathfinder (MPP) Discovery Mission are to characterize the composition and structure of Mars' north polar ice cap, and to determine whether a climate record may be preserved in layers of ice and dust.
Paige, D. A. +2 more
core +1 more source
Core drilling for coal in the Moose Creek area, Alaska [PDF]
, 1934 Gerald Ashley Waring
openalex +1 more source
Exploring Castle Island barite deposit by Diamond Drilling [PDF]
, 1932 J. A. Williams, P. A. Decker
openalex +1 more source
Controlled release of free-falling test models [PDF]
, 1970 Releasing device, powered by a drill motor through an adjustable speed reducer, has a spinning release head with three retractable spring-loaded fingers.
Fife, W. J., Holway, H. P.
core +1 more source
Results of core drilling of uranium-bearing lignite deposits in Harding and Perkins counties, South Dakota, and Bowman County, North Dakota [PDF]
, 1952 H.D. Zeller
openalex +1 more source