Matrix bit with extended blades

Details Matrix bit with extended blades Matrix bit with extended blades

E - Fixed Constructions

21

B

76/21, 255/69

E21B 10/36 (2006.01) E21B 10/54 (2006.01) E21B 10/60 (2006.01)

Patent

CA 1287343

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.

532376

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