Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements
Patent
1990-07-24
1991-07-23
Britts, Ramon S.
Boring or penetrating the earth
Bit or bit element
Plural separable cutter elements
175415, 175417, E21B 1036
Patent
active
050335600
ABSTRACT:
An earth boring bit having a body provided with a shank having a tubular bore and a head along the opposite end of said body having flow passages communicating with the bore, the head having face portions including a center end face portion, a nose portion, a shoulder portion, and a gage portion along the maximum diameter of the bit, and cutting elements mounted over said face portions having cutting faces oriented in the direction of rotation of the drill bit, the areas of the cutting faces of the cutting elements ranging from a maximum at the center face portion to a minimum at the gage portion of the bit. The cutters may be individually mounted, mounted in groups, arranged in random patterns, and arranged in a variety of other patterns, including radial longitudinal rows circumferentially spaced around the bit face.
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Mauer, W. C., Advanced Drilling Techniques; The Petroleum Publishing Co., Tulsa, Chap. 22; pp. 541-591 (1980).
King William W.
Sawyer George S.
Britts Ramon S.
Dresser Industries Inc.
Schoeppel Roger J.
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