Drilling Rig Core Articles & Analysis
2 articles found
Widely used in municipal construction, highway bridges, high-rise buildings, and other ground construction projects, with different drilling tools, suitable for dry (short screw), or wet (rotary bucket) and rock formation (core drill) hole-forming operations, rotary drilling The drilling rig has ...
METHODOLOGY One multilevel bedrock monitoring well was installed at each research site (Sites A and B on figure 2). A Longyear 38 drill rig with a tricone bit was used to drill to the till-bedrock interface (approximately 40m/130'). The overburden was then cased off, the casing cemented in and a blow-out protector installed on the ...