Steerable fixed cutter drill bit

Details Steerable fixed cutter drill bit Steerable fixed cutter drill bit

E - Fixed Constructions

21

B

E21B 10/00 (2006.01) E21B 10/46 (2006.01)

Patent

CA 2569436

A fixed cutter drill bit includes a plurality of gage pads, where certain of the gage pads have an active cutting region adjacent to the end of the gage pad adjacent to the bit face, and a passive region at the end of the gage pad adjacent to the pin-end of the bit. The active regions include forward-facing cutter elements. Other gage pads include an active region on the end adjacent to the pin-end, and a passive region on the gage pad end adjacent to the bit face. The passive and active regions have lengths within the range of 40 to 60 percent of the total axial length of the gage pads. A passive gage pad is positioned on the bit between the gage pads having both active and passive regions.

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