GB2359838B - Improvements in or relating to rotary drill bits - Google Patents
Improvements in or relating to rotary drill bitsInfo
- Publication number
- GB2359838B GB2359838B GB0113284A GB0113284A GB2359838B GB 2359838 B GB2359838 B GB 2359838B GB 0113284 A GB0113284 A GB 0113284A GB 0113284 A GB0113284 A GB 0113284A GB 2359838 B GB2359838 B GB 2359838B
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- drill bits
- rotary drill
- rotary
- bits
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
- E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9708022.0A GB9708022D0 (en) | 1997-04-21 | 1997-04-21 | Curved blades and gauge |
GB9808135A GB2325014B (en) | 1997-04-21 | 1998-04-17 | Improvements in or relating to rotary drill bits |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0113284D0 GB0113284D0 (en) | 2001-07-25 |
GB2359838A GB2359838A (en) | 2001-09-05 |
GB2359838B true GB2359838B (en) | 2002-03-13 |
Family
ID=26311418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0113284A Expired - Lifetime GB2359838B (en) | 1997-04-21 | 1998-04-17 | Improvements in or relating to rotary drill bits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2359838B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2292163A (en) * | 1994-08-10 | 1996-02-14 | Smith International | Drill bit having enhanced cutting structure and stabilizing features |
WO1996024744A1 (en) * | 1995-02-07 | 1996-08-15 | Brit Bit Limited | Improvements in or relating to drill bits |
WO1998021441A1 (en) * | 1996-11-12 | 1998-05-22 | Baroid Technology Inc. | Steel-bodied bit |
-
1998
- 1998-04-17 GB GB0113284A patent/GB2359838B/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2292163A (en) * | 1994-08-10 | 1996-02-14 | Smith International | Drill bit having enhanced cutting structure and stabilizing features |
WO1996024744A1 (en) * | 1995-02-07 | 1996-08-15 | Brit Bit Limited | Improvements in or relating to drill bits |
WO1998021441A1 (en) * | 1996-11-12 | 1998-05-22 | Baroid Technology Inc. | Steel-bodied bit |
Also Published As
Publication number | Publication date |
---|---|
GB2359838A (en) | 2001-09-05 |
GB0113284D0 (en) | 2001-07-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20180416 |