-
Directional drilling (or
slant drilling) is the
practice of
drilling non-
vertical bores. It can be
broken down into four main groups:
oilfield directional...
- A
drill bit is a
cutting tool used in a
drill to
remove material to
create holes,
almost always of
circular cross-section.
Drill bits come in many sizes...
-
developed in
ancient Egypt by 3000 BC. The pump
drill was
invented during Roman times. It
consists of a
vertical spindle aligned by a
piece of
horizontal wood...
- A
drifter drill,
sometimes called a rock
drill, is a tool used in
mining and
civil engineering to
drill into rock. Rock
drills are used for
making holes...
-
often adopt a
vertically integrated structure,
meaning that they are
active along the
entire supply chain from
locating deposits,
drilling and extracting...
-
deepest hole
drilled to date is the Kola
Superdeep Borehole, with a true
vertical drill-depth of
around 12 km (7.5 mi). However, the
distance to the center...
- available. It
drills rapidly, but
produces an
irregular hole
contaminated by soot and fuel oil. A Soviet-designed
drill used a
motor to
provide vertical vibration...
-
executed a
successful drill up to 12
metres (39 ft)
while Oil and
Natural Gas
Corporation was
preparing for
vertical drilling. On 28 November, "rat-hole"...
- A hand
drill is the
simplest primitive method to
produce rapid rotary motion of a rod. It
consists in
holding the rod
vertically between both
hands and...
- the
drilling fluid. In the diagram,
these are
stands of
drill pipe
which are 2 or 3
joints of
drill pipe
connected and
stood in the
derrick vertically, usually...