Drill bit with single cutting head
Patent
·
OSTI ID:6101167
The invention discloses a rotary drill for drilling a well in the surface of the earth the drill comprising a drill bit including an upper portion for connection to a drill string, duct means for carrying fluid to extract detritus and clear the bottom of the well and receiving means; a solid cutting head comprising a conical head portion and a stem portion, the conical head portion including holes therein and cutting elements inserted in the holes, the stem portion being received in the receiving means of the drill bit, wherein the stem and the receiving means include holding means for rotatably holding the cutting head in the drill bit; bearing means between the drill bit and the conical head; and a lubrication system interconnected between the drill bit and the cutting head.
- Assignee:
- TIC; EDB-79-112579
- Patent Number(s):
- US 4154312
- OSTI ID:
- 6101167
- Country of Publication:
- United States
- Language:
- English
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