Fluid passage formed by diamond insert studs for drag bits
Insert retention and cooling apparatus for drag bits
Rotary drill bit
Drill bit with self cleaning nozzle
Cutting member for rotary drill bit Patent #: 4498549
ApplicationNo. 06/759459 filed on 07/26/1985
US Classes:175/429, Including a nozzle175/339With drilling fluid conduit details
ExaminersPrimary: Leppink, James A.
Assistant: Melius, Terry Lee
Attorney, Agent or Firm
International ClassesE21B 10/00 (20060101)
E21B 10/60 (20060101)
E21B 10/56 (20060101)
E21B 10/46 (20060101)
AbstractA rotary drill bit (10) having a plurality of diamond cutting elements (48) each having a cutting face (60) with a discharge nozzle (64) therein. The discharge nozzle (64) directs the flow of drilling fluid away from the cutting face (60) and is surrounded by the cutting face (60).