US Patent No: 7,726,415
Number of patents in Portfolio can not be more than 2000
Fixed cutter drill bit
Stats
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Jun 1, 2010
Issued date -
Apr 6, 2006
filing date -
11/399,709
serial no -
In Force
status
Importance
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Abstract
The fixed cutter drill bit disclosed utilizes a unique piloting section and reaming section carefully designed to impart several specific operational advantages. In the piloting section, cutting structures have been arranged so as to create offsetting cutting forces that result in a net zero imbalance during operation. Furthermore, the piloting section utilizes carefully placed shock studs which aid in protecting the primary cutting structure. In addition, the location of the fluid supply nozzles on the body of the reamer section serves to indicate the occurrence of a catastrophic cutting structure failure below the pilot gage.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,582,261 Drill bit having enhanced cutting structure and stabilizing features | 36 | 1994 | |
| 5,549,171 Drill bit with performance-improving cutting structure | 54 | 1994 | |
| 5,592,996 Drill bit having improved cutting structure with varying diamond density | 14 | 1994 | |
| 5,551,522 Drill bit having stability enhancing cutting structure | 27 | 1994 | |
| 5,607,024 Stability enhanced drill bit and cutting structure having zones of varying wear resistance | 83 | 1995 | |
| 5,607,025 Drill bit and cutting structure having enhanced placement and sizing of cutters for improved bit stabilization | 30 | 1995 | |
| 5,737,980 Brazing receptacle for improved PCD cutter retention | 9 | 1996 | |
| 5,906,246 PDC cutter element having improved substrate configuration | 27 | 1996 | |
| 6,164,394 Drill bit with rows of cutters mounted to present a serrated cutting edge | 23 | 1996 | |
| 5,937,958 Drill bits with predictable walk tendencies | 42 | 1997 | |
| 6,148,937 PDC cutter element having improved substrate configuration | 8 | 1997 | |
| 6,918,455 Drill bit with large inserts | 5 | 1998 | |
| 6,564,886 Drill bit with rows of cutters mounted to present a serrated cutting edge | 17 | 2000 | |
| 6,729,420 Multi profile performance enhancing centric bit and method of bit design | 69 | 2002 | |
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| 5,090,492 Drill bit with vibration stabilizers | 44 | 1991 | |
| 5,265,685 Drill bit with improved insert cutter pattern | 40 | 1991 | |
| 5,238,075 Drill bit with improved cutter sizing pattern | 34 | 1992 | |
| 5,346,025 Drill bit with improved insert cutter pattern and method of drilling | 19 | 1993 | |
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| 6,408,958 Superabrasive cutting assemblies including cutters of varying orientations and drill bits so equipped | 59 | 2000 | |
| 6,659,199 Bearing elements for drill bits, drill bits so equipped, and method of drilling | 13 | 2001 | |
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| 4,911,254 Polycrystalline diamond cutting element with mating recess | 17 | 1989 | |
| 5,099,929 Unbalanced PDC drill bit with right hand walk tendencies, and method of drilling right hand bore holes | 41 | 1990 | |
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| 4,515,227 Nozzle placement in a diamond rotating bit including a pilot bit | 32 | 1983 | |
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| 4,618,010 Hole opener | 28 | 1986 | |
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| 6,904,983 Low-contact area cutting element | 9 | 2003 | |
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| 6,568,492 Drag-type casing mill/drill bit | 26 | 2001 | |
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| 6,926,099 Drill out bi-center bit and method for using same | 13 | 2003 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 1, 2013 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 1, 2017 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 1, 2021 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |