ROTARY DRILLING BITS
Trident has new open bearing roller
cone bits in sizes 2-7/8" thru 9-7/8" with regular or jet circulation as
well as sealed bearing and rerun bits up to 28" diameter.
The S.E. 54 utilizes
an offset with large chisel-shaped inserts spaced to provide high penetration
rates in softer formation. It is extremely effective in shale, clay, soft to
medium limestone and other formations of relatively low compressive strength
with hard streaks or abrasive qualities.
IADC Code Range - 521-532
The T4 is designed with high
cone offset and longer, widely spaced teeth to provide maximum penetration in
medium soft to soft formations such as shale, clay, soft sand stone and red
beds. Also effective in other soft to medium formations with relatively low
IADC Code Range - 131-142
The S.E. 56 is
adaptable to a wide variety of formations with higher compressive strengths and
performs well in sandstone, limestone, hard shale and other formations with high
abrasive qualities, numerous hard streaks and broken formations.
IADC Code Range - 541-622
The T3 performs well
in medium formations including unconsolidated shale, medium soft limestone,
medium sandstone and other formations of slightly higher compressive strength
with intermittent hard streaks.
IADC Code Range - 211-232
The S.E. 57
effectively combines chisel and conical inserts to produce a design to drill
slightly harder formations such as hard limestone, dolomite, hard sand and other
formations with hard cherty streaks. The arrangement of the tungsten carbide
inserts provides maximum durability, reduces drill vibration and allows greater
drilling weights in highly compressive strength formations.
IADC Code Range- 631-712
The T2 performs well
in medium to medium hard formations with hard, cherty streaks may require the
T2. Short, closely spaced teeth, applied with tungsten carbide hard-facing
help reduce vibrations through the hard formations.
IADC Code Range - 241-312
For maximum penetration
rates in harder formations, the S.E. 58 utilizes breakage resistant,
projectile shaped tungsten carbide inserts. They are closely spaced for maximum
bottom hole cleaning in hard, abrasive and homogeneous limestone, dolomite,
basalt, granite and chert.
IADC Code Range - 721-742
The TI-H is designed
for hard, abrasive formations such as hard sandstone, dolomite, hard limestone
and granite. The outer gauge rows have webs joining adjacent heel teeth, which
are heavily applied with tungsten carbide hard-facing to provide maximum
resistance to gauge wear.
IADC Code Range - 321-342
REGULAR CIRCULATION DESIGN:
hole or regular circulation bits utilize a full diameter center to maximize
cutter tooth cleaning. This center hole may be left fully open or can be
restricted in size through the use of a center orifice plate.
JET CIRCULATION DESIGN
Jet circulation bits
incorporate three orifices strategically placed between the cutters. These
orifices are equipped with nozzles which direct the high velocity jet stream
to the outside diameter of the hole being drilled.