• TCI Bits

    Tungsten Carbide Insert (TCI) bits. Throop offers a wide variety of types of chisel, conical and spherical shaped tungsten carbide inserts, each uniquely designed for drilling in specific types of rock formations. Available in central, jet, and reverse circulation.

  • 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

  • Circulation Styles

    Central - Full Whole

    RC - Reverse

    JAC - Jet Air

    RFC - Fluid

    RAC - Air

    JFC - Jet Fluid

  • GET A QUOTE

    Throop Rock Bit Headquarters
    1995 North Public Road
    Tonkawa, Oklahoma 74653 USA
    +1 (580) 628-3416