| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | COMPLIANTLY COUPLED CUTTING SYSTEM | US12191172 | 2008-08-13 | US20100038139A1 | 2010-02-18 | Ashley Bernard Johnson; Geoffrey C. Downton; John M. Cook |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be movably coupled with chassis. The first plurality of gauge pads may include a second plurality of cutters, and the first plurality of gauge pads may be fixedly coupled with the chassis. | ||||||
| 62 | Drill bit with replaceable blade members | US12456234 | 2009-06-11 | US20090308664A1 | 2009-12-17 | Alan L. Nackerud |
| A drill bit for rotary drilling a well bore of a subterranean formation which has replaceable blades which overlap and interlock with each other and have retention means on more than one axis. The replaceable blades may have cutters with enhanced retention by brazing ring grooves and the body may be flared at its bottom to better retain the blades and cutters. | ||||||
| 63 | Drill shoe | US10788976 | 2004-02-27 | US07096982B2 | 2006-08-29 | David McKay; David M. Haugen |
| A method and apparatus for a drilling with casing includes therewith a drill shoe configured for later drilling through thereof in situ, with cutters retainable thereon in response to the forces encountered during borehole drilling, yet moveable from the envelope through which the later drill shoe will pass when cutting through the in situ drill shoe. The drill shoe includes one or more profiles thereon, into which blades carrying the formation drilling cutters are disposed. The profiles include at least one projection thereon, which is received within a mating slot in the blades. The blades also may be configured to have opposed sections which are configured with respect to one another to have an included angle of less than ninety degrees. | ||||||
| 64 | Well drilling bit | US3430719D | 1967-11-20 | US3430719A | 1969-03-04 | WHITE THOMAS A |
| 65 | Well drilling bit | US48007965 | 1965-08-16 | US3340940A | 1967-09-12 | WHITE MARVIN E |
| 66 | Well drilling bit | US47409865 | 1965-07-22 | US3326308A | 1967-06-20 | WHITE MARVIN E |
| 67 | Unitized drilling bit | US80311059 | 1959-03-31 | US3061025A | 1962-10-30 | STOCKARD JR JESSE L |
| 68 | Drill bits | US81802959 | 1959-06-04 | US3040825A | 1962-06-26 | WILLIAMS JAMES T |
| 69 | Removable blade drag bits | US60101456 | 1956-07-30 | US2890020A | 1959-06-09 | HAWTHORNE HERBERT J; WEAVER EARL M |
| 70 | Detachable blade bit | US65942357 | 1957-05-15 | US2859942A | 1958-11-11 | HAWTHORNE HERBERT J |
| 71 | Removable blade drag bits | US46320254 | 1954-10-19 | US2831657A | 1958-04-22 | HAWTHORNE HERBERT J |
| 72 | Self-piloted rotary drill bit | US70031446 | 1946-09-30 | US2532783A | 1950-12-05 | ORVILLE PHIPPS |
| 73 | Drill | US3721148 | 1948-07-06 | US2529788A | 1950-11-14 | SIGNELL CARL A |
| 74 | Rotary core drill | US72345424 | 1924-07-01 | US1626249A | 1927-04-26 | MORAN ROBERT B; SPENGLER ARTHUR F |
| 75 | Well-drilling device | US43964121 | 1921-01-24 | US1370492A | 1921-03-01 | SMITH PRIMUS W; BOOKHOUT JOHN J |
| 76 | Hydraulic drill. | US1905259064 | 1905-05-05 | US854464A | 1907-05-21 | CHARLTON JAMES |
| 77 | Boring-bit. | US1905272131 | 1905-07-31 | US852745A | 1907-05-07 | STAUB NICOLAUS |
| 78 | Drill. | US1905287150 | 1905-11-13 | US829634A | 1906-08-28 | DECKER HARRY R |
| 79 | Rock-drill. | US1905249602 | 1905-03-11 | US820530A | 1906-05-15 | STURM WILLIAM |
| 80 | Coal-drill | US534236D | US534236A | 1895-02-12 | ||
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