发明授权
- 专利标题: Drill bits with reduced exposure of cutters
- 专利标题(中): 钻头减少切割刀的暴露
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申请号: US11214524申请日: 2005-08-30
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公开(公告)号: US07096978B2公开(公告)日: 2006-08-29
- 发明人: Mark W. Dykstra , William Heuser , Michael L. Doster , Theodore E. Zaleski, Jr. , Jack T. Oldham , Terry D. Watts , Daniel E. Ruff , Rodney B. Walzel , Christopher C. Beuershausen
- 申请人: Mark W. Dykstra , William Heuser , Michael L. Doster , Theodore E. Zaleski, Jr. , Jack T. Oldham , Terry D. Watts , Daniel E. Ruff , Rodney B. Walzel , Christopher C. Beuershausen
- 申请人地址: US TX Houston
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 当前专利权人地址: US TX Houston
- 代理机构: TraskBritt
- 主分类号: E21B10/46
- IPC分类号: E21B10/46
摘要:
A rotary drag bit and method for drilling subterranean formations, including a bit body being provided with at least one cutter thereon exhibiting reduced, or limited, exposure to the formation, so as to control the depth-of-cut of the at least one cutter, so as to control the volume of formation material cut per bit rotation, as well as to control the amount of torque experienced by the bit and an optionally associated bottomhole assembly regardless of the effective weight-on-bit are all disclosed. The exterior of the bit preferably includes a plurality of blade structures carrying at least one such cutter thereon and including a sufficient amount of bearing surface area to contact the formation so as to generally distribute an additional weight applied to the bit against the bottom of the borehole without exceeding the compressive strength of the formation rock.
公开/授权文献
- US20050284660A1 Drill bits with reduced exposure of cutters 公开/授权日:2005-12-29
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