ZA975507B - Drill tube for forming drill strings. - Google Patents
Drill tube for forming drill strings.Info
- Publication number
- ZA975507B ZA975507B ZA9705507A ZA975507A ZA975507B ZA 975507 B ZA975507 B ZA 975507B ZA 9705507 A ZA9705507 A ZA 9705507A ZA 975507 A ZA975507 A ZA 975507A ZA 975507 B ZA975507 B ZA 975507B
- Authority
- ZA
- South Africa
- Prior art keywords
- drill
- restriction
- valve body
- seat
- drill tube
- Prior art date
Links
- 238000011010 flushing procedure Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Check Valves (AREA)
- Drilling Tools (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Tubes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9602472A SE506855C2 (sv) | 1996-06-24 | 1996-06-24 | Borrör för bildande av borrsträngar samt ventilkropp för sådant borrör |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA975507B true ZA975507B (en) | 1998-01-23 |
Family
ID=20403117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA9705507A ZA975507B (en) | 1996-06-24 | 1997-06-20 | Drill tube for forming drill strings. |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0907820B1 (fr) |
AT (1) | ATE257214T1 (fr) |
AU (1) | AU712137B2 (fr) |
DE (1) | DE69727056D1 (fr) |
SE (1) | SE506855C2 (fr) |
WO (1) | WO1997049891A1 (fr) |
ZA (1) | ZA975507B (fr) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE922221C (de) * | 1952-09-09 | 1955-01-10 | Baker Oil Tools Inc | Rohrschuh fuer den Einbau von Rohrstraengen in mit Fluessigkeit gefuellte Tiefbohrloecher |
GB8518218D0 (en) * | 1985-07-19 | 1985-08-29 | Drilex Ltd | Drop ball sub-assembly |
US5174392A (en) * | 1991-11-21 | 1992-12-29 | Reinhardt Paul A | Mechanically actuated fluid control device for downhole fluid motor |
SE503367C2 (sv) * | 1993-04-27 | 1996-06-03 | Sandvik Ab | Borrörselement för topphammarborrning |
-
1996
- 1996-06-24 SE SE9602472A patent/SE506855C2/sv not_active IP Right Cessation
-
1997
- 1997-06-18 AU AU32821/97A patent/AU712137B2/en not_active Ceased
- 1997-06-18 EP EP97928611A patent/EP0907820B1/fr not_active Expired - Lifetime
- 1997-06-18 AT AT97928611T patent/ATE257214T1/de not_active IP Right Cessation
- 1997-06-18 DE DE69727056T patent/DE69727056D1/de not_active Expired - Lifetime
- 1997-06-18 WO PCT/SE1997/001085 patent/WO1997049891A1/fr active IP Right Grant
- 1997-06-20 ZA ZA9705507A patent/ZA975507B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
AU712137B2 (en) | 1999-10-28 |
SE9602472L (sv) | 1997-12-25 |
ATE257214T1 (de) | 2004-01-15 |
AU3282197A (en) | 1998-01-14 |
DE69727056D1 (de) | 2004-02-05 |
EP0907820A1 (fr) | 1999-04-14 |
WO1997049891A1 (fr) | 1997-12-31 |
EP0907820B1 (fr) | 2004-01-02 |
SE506855C2 (sv) | 1998-02-16 |
SE9602472D0 (sv) | 1996-06-24 |
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