Bits for use in drilling with casting and method of making...

Details Bits for use in drilling with casting and method of making... Bits for use in drilling with casting and method of making...

2006-10-10

2006-10-10

Bates, Zakiya W. (Department: 3676)

Boring or penetrating the earth

With tool drive prime mover or above-ground mechanical...

With installing casing

C175S373000, C175S393000, C175S394000

Reexamination Certificate

active

07117960

ABSTRACT:
Bits for use in drilling with a well completion string having a bit body and a cutting face that includes a plurality of sets of cutter elements mounted on the cutting face. The bit body has a central longitudinal bore having an integrated female non-shouldered, standard oilfield completion string thread. The bits are designed with minimal cutter coverage, and this combined with the integrated completion string thread allows for economical completion of a well with high ROP expected from a PDC type bit. In an additional embodiment, a bit comprises a bit body and a cutting face having integrated cutting structures.

REFERENCES:
patent: 4293048 (1981-10-01), Kloesel, Jr.

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