SE8802647L - Borrstaang - Google Patents
BorrstaangInfo
- Publication number
- SE8802647L SE8802647L SE8802647A SE8802647A SE8802647L SE 8802647 L SE8802647 L SE 8802647L SE 8802647 A SE8802647 A SE 8802647A SE 8802647 A SE8802647 A SE 8802647A SE 8802647 L SE8802647 L SE 8802647L
- Authority
- SE
- Sweden
- Prior art keywords
- drilling rod
- drilling
- rod
- assembly
- drill crown
- Prior art date
Links
- 238000005553 drilling Methods 0.000 abstract 11
- 238000011010 flushing procedure Methods 0.000 abstract 2
- 238000010276 construction 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
- E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8802647A SE469848B (sv) | 1988-07-15 | 1988-07-15 | Borrstång och borrstångskomponent där borrsträngen innefattar en central stångsats och omgivande rör |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8802647A SE469848B (sv) | 1988-07-15 | 1988-07-15 | Borrstång och borrstångskomponent där borrsträngen innefattar en central stångsats och omgivande rör |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8802647D0 SE8802647D0 (sv) | 1988-07-15 |
SE8802647L true SE8802647L (sv) | 1990-01-16 |
SE469848B SE469848B (sv) | 1993-09-27 |
Family
ID=20372921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8802647A SE469848B (sv) | 1988-07-15 | 1988-07-15 | Borrstång och borrstångskomponent där borrsträngen innefattar en central stångsats och omgivande rör |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE469848B (sv) |
-
1988
- 1988-07-15 SE SE8802647A patent/SE469848B/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE8802647D0 (sv) | 1988-07-15 |
SE469848B (sv) | 1993-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 8802647-1 Effective date: 19950210 Format of ref document f/p: F |
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NUG | Patent has lapsed |
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