EP0325272A3 - Drill bit with improved steerability - Google Patents
Drill bit with improved steerability Download PDFInfo
- Publication number
- EP0325272A3 EP0325272A3 EP89100960A EP89100960A EP0325272A3 EP 0325272 A3 EP0325272 A3 EP 0325272A3 EP 89100960 A EP89100960 A EP 89100960A EP 89100960 A EP89100960 A EP 89100960A EP 0325272 A3 EP0325272 A3 EP 0325272A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- drill bit
- improved steerability
- steerability
- improved
- drill
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1092—Gauge section of drill bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14629088A | 1988-01-20 | 1988-01-20 | |
US146290 | 1988-01-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0325272A2 EP0325272A2 (en) | 1989-07-26 |
EP0325272A3 true EP0325272A3 (en) | 1990-02-07 |
EP0325272B1 EP0325272B1 (en) | 1993-04-28 |
Family
ID=22516689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890100960 Expired - Lifetime EP0325272B1 (en) | 1988-01-20 | 1989-01-20 | Drill bit with improved steerability |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0325272B1 (en) |
AU (1) | AU613142B2 (en) |
CA (1) | CA1306245C (en) |
DE (1) | DE68906166T2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5161167A (en) * | 1990-06-21 | 1992-11-03 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor laser producing visible light |
FR2743843B1 (en) * | 1996-01-24 | 1998-04-24 | D A T C Diamond And Tungsten C | DRILLING TOOL, PARTICULARLY FOR PERFORMING OIL DRILLING |
FR2751372B1 (en) * | 1996-07-22 | 1998-12-04 | Total Sa | RELAXATION DRILLING TOOL |
US5967247A (en) * | 1997-09-08 | 1999-10-19 | Baker Hughes Incorporated | Steerable rotary drag bit with longitudinally variable gage aggressiveness |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2553701A (en) * | 1949-09-16 | 1951-05-22 | Willard F Comstock | Well drilling bit |
US3318400A (en) * | 1965-03-31 | 1967-05-09 | Exxon Production Research Co | Hollow crown diamond bit |
US3367430A (en) * | 1966-08-24 | 1968-02-06 | Christensen Diamond Prod Co | Combination drill and reamer bit |
US3833077A (en) * | 1971-02-12 | 1974-09-03 | L Lavallee | Diamond drills |
US3978933A (en) * | 1975-01-27 | 1976-09-07 | Smith International, Inc. | Bit-adjacent stabilizer and steel |
US4176723A (en) * | 1977-11-11 | 1979-12-04 | DTL, Incorporated | Diamond drill bit |
-
1989
- 1989-01-18 AU AU28585/89A patent/AU613142B2/en not_active Expired - Fee Related
- 1989-01-19 CA CA000588595A patent/CA1306245C/en not_active Expired - Lifetime
- 1989-01-20 EP EP19890100960 patent/EP0325272B1/en not_active Expired - Lifetime
- 1989-01-20 DE DE1989606166 patent/DE68906166T2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2553701A (en) * | 1949-09-16 | 1951-05-22 | Willard F Comstock | Well drilling bit |
US3318400A (en) * | 1965-03-31 | 1967-05-09 | Exxon Production Research Co | Hollow crown diamond bit |
US3367430A (en) * | 1966-08-24 | 1968-02-06 | Christensen Diamond Prod Co | Combination drill and reamer bit |
US3833077A (en) * | 1971-02-12 | 1974-09-03 | L Lavallee | Diamond drills |
US3978933A (en) * | 1975-01-27 | 1976-09-07 | Smith International, Inc. | Bit-adjacent stabilizer and steel |
US4176723A (en) * | 1977-11-11 | 1979-12-04 | DTL, Incorporated | Diamond drill bit |
Also Published As
Publication number | Publication date |
---|---|
DE68906166D1 (en) | 1993-06-03 |
EP0325272B1 (en) | 1993-04-28 |
DE68906166T2 (en) | 1993-11-25 |
CA1306245C (en) | 1992-08-11 |
AU613142B2 (en) | 1991-07-25 |
EP0325272A2 (en) | 1989-07-26 |
AU2858589A (en) | 1989-07-20 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 19910508 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: EASTMAN TELECO COMPANY |
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