Patent ID: 6390212
Filing Date: 2002-05-21
Classification: E21B

Abstract:
A drill bit for drilling bore holes into earth formations comprising:an upper body for attaching the drill bit to a drill string and a lower body having cutting means and a shoulder therebetween; stabilizer means having wear-resistant inserts; means to meter pressurized fluid to the stabilizer means and the bore hole for cuttings removal; said means including a plurality of adjustable and removable nozzles to regulate the amount of said pressurized fluid delivered to the drill hole; said nozzles being removably secured on the shoulder and on the cutting means whereby said pressurized fluid is balanced in such a manner as to facilitate removal of the cuttings from the bottom of the drill bit and to create a fluidized bed of said fluid near the upper shoulders of said upper body for alleviating pressure at the bottom of the bore hole and facilitating removal of the cuttings up the bore hole.