Matrix bit with extended blades

Details Matrix bit with extended blades Matrix bit with extended blades

1986-05-23

1987-05-26

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Core forming type

175417, 76108A, E21B 1036

Patent

active

046677569

ABSTRACT:
A matrix bit is shown of the type having a metallic mandrel with a connecting end for connection in a well pipe string leading to the well surface. An opposite end is covered with a cast matrix material which defines a central bit body. A plurality of integral blades are formed of the cast matrix material and extend axially and radially from the central bit body. Each of the blades is reinforced by a metallic extension which is contained within the matrix material and extends coaxially with each blade.

REFERENCES:
patent: 3757878 (1973-09-01), Wilder et al.
patent: 3757879 (1973-09-01), Wilder et al.
patent: 3825083 (1974-07-01), Flarity et al.
patent: 4351401 (1982-09-01), Fielder
patent: 4440247 (1984-04-01), Sartor
patent: 4460053 (1984-07-01), J/u/ rgens et al.
Engineering Update, vol. 6, No. 3, Nov. 1985.

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