THROOP ROCK BIT
THROOP ROCK BIT
TCI BITs
Overview
Throop Rock Bit designed TCI tricones are precision, high-value bits that produces consistent, lowest-cost-per-foot-drilled results. We offer a wide variety of chisel, conical and spherical shaped tungsten carbide inserts, each uniquely designed for drilling in specific types of rock formations. Available in all circulation types.
circulation types
Central - Full Whole
JFC - Jet Fluid
JAC - Jet Air
RC - Reverse
RFC - Fluid
RAC - Air
SPECIFICATIONS
Drawings and data sheets available for all bits upon request
TR51 (IADC 5-1-1)
SOFT FORMATIONS
The TR51 is designed for soft, low strength formations. Maximum cone offset and long chisel inserts for effective gouging and scraping formation removal. Ample hard facing is applied along with flat TC inserts on the gage of the cone. These features provide maximum protection against abrasion and add additional bearing life.
Formations: Soft shales, sands, clays, soft limestones and other unconsolidated formations
Features: Hard facing of TCI inserts, cone offset, long chisel inserts
Suggested operating weights: 1,000 - 3,000 PSI
Speeds: 50 to 200 RPM
TR53 (IADC 5-3-1)
MEDIUM SOFT FORMATIONS
The TR53 design utilizes the same cone structure as the TR51 but with all conical shaped inserts for efficient drilling in medium soft formation. The conical shaped inserts provide greater wear resistance in the harder formations. Ample hard facing is applied to the shirttail providing maximum protection against abrasion and insures the longest possible bearing life
Formations: Shale, sandstone, and alluvial deposits
Features: Hard facing shirttail, cone offset, conical shaped inserts
Suggested operating weights: 1,500 - 5,000 PSI
Speeds: 50 to 175 RPM
TR61 (IADC 6-1-1)
MEDIUM FORMATIONS
The TR61 is designed for medium formations with harder streaks. Short to medium extension chisel inserts throughout and moderate cone offsets, provide for very high penetration rates while maintaining excellent durability in the varied formations.
Formations: Limestones, sands, dolomites, and medium to hard shales
Features: Hard facing shirttail, TCI insert protection on gage, moderate cone offsets, short to medium extension chisel inserts
Suggested operating weights: 1,000 - 3,000 PSI
Speeds: 40 - 180 RPM
TR63 (IADC 6-3-1)
MEDIUM HARD FORMATIONS
The TR63 is designed for medium hard formations that are semi-abrasive. Chisel shaped inserts on the inner rows to get maximum penetration. Gouging/scraping action is provided by the cone offset. Ample hard facing on the shirttail provides maximum protection against abrasion and insures the longest possible bearing life. Bit stabilization recommended.
Formations: Hard sandy limestone, shale, dolomite and limestone with cherty streaks
Features: Hard facing shirttail, conical TCI inserts on the gage rows, cone offsets, chisel shaped inserts on t he inner rows
Suggested operating weights: 1,500 - 6,000 PSI
Speeds: 55 - 140 RPM
TR64 (IADC 6-4-1)
MEDIUM HARD TO HARD FORMATIONS
The TR64 is similar to the TR63 but with dome shaped TC inserts on the gage rows and chisel shaped inserts on the inner rows for best performance in tight and well cemented medium hard to hard formations.
Formations: Abrasive limestone, sandstone and dolomite where maximum gage wear resistance is required
Features: Hard facing shirttail, cone offsets, dome shaped TC inserts on the gage rows and chisel shaped inserts on the inner rows
Suggested operating weights: 1,500 - 6,000 PSI
Speeds: 55 - 140 RPM
TR74 (IADC 7-4-1)
HARD FORMATIONS
The TR74 features a minimum offset cutting structure design and all dome shaped TC inserts. Designed for hard and abrasive formations. Stabilization near the bit is highly recommended for maximum bit life.
Formations: Quartzite, granite, cherty iron ores, and copper porphyry
Features: Hard facing shirttail, minimal cone offsets, all dome shaped TC inserts
Suggested operating weights: 1,500 - 8,000 PSI
Speeds: 35 - 75 RPM
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