DE69121575D1 - Bohrstrangelement mit einer Nut von variabler Tiefe - Google Patents
Bohrstrangelement mit einer Nut von variabler TiefeInfo
- Publication number
- DE69121575D1 DE69121575D1 DE69121575T DE69121575T DE69121575D1 DE 69121575 D1 DE69121575 D1 DE 69121575D1 DE 69121575 T DE69121575 T DE 69121575T DE 69121575 T DE69121575 T DE 69121575T DE 69121575 D1 DE69121575 D1 DE 69121575D1
- Authority
- DE
- Germany
- Prior art keywords
- groove
- drill string
- variable depth
- string element
- depth
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/16—Drill collars
-
- 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
- E21B17/22—Rods or pipes with helical structure
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)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1991/003159 WO1993000500A2 (en) | 1991-06-25 | 1991-06-25 | Variable depth grooved drill string member |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69121575D1 true DE69121575D1 (de) | 1996-09-26 |
DE69121575T2 DE69121575T2 (de) | 1997-03-13 |
Family
ID=22225514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69121575T Expired - Lifetime DE69121575T2 (de) | 1991-06-25 | 1991-06-25 | Bohrstrangelement mit einer Nut von variabler Tiefe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0544835B1 (de) |
CA (1) | CA2090758C (de) |
DE (1) | DE69121575T2 (de) |
WO (1) | WO1993000500A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2411253A1 (en) * | 2001-04-26 | 2002-10-28 | Furukawa Co., Ltd. | Step tube rod, and drilling machine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125173A (en) * | 1964-03-17 | Tubular drill string members | ||
US4285407A (en) * | 1979-12-17 | 1981-08-25 | Samford Travis L | Straight hole driller |
US4460202A (en) * | 1980-11-26 | 1984-07-17 | Chance Glenn G | Intermediate weight drill string member |
FR2517357A1 (fr) * | 1981-11-27 | 1983-06-03 | Smf Int | Tige de forage |
US4811800A (en) * | 1987-10-22 | 1989-03-14 | Homco International Inc. | Flexible drill string member especially for use in directional drilling |
-
1991
- 1991-06-25 EP EP91919444A patent/EP0544835B1/de not_active Expired - Lifetime
- 1991-06-25 DE DE69121575T patent/DE69121575T2/de not_active Expired - Lifetime
- 1991-06-25 CA CA002090758A patent/CA2090758C/en not_active Expired - Lifetime
- 1991-06-25 WO PCT/US1991/003159 patent/WO1993000500A2/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE69121575T2 (de) | 1997-03-13 |
EP0544835A4 (en) | 1993-09-22 |
EP0544835B1 (de) | 1996-08-21 |
CA2090758A1 (en) | 1992-12-26 |
EP0544835A1 (de) | 1993-06-09 |
WO1993000500A3 (en) | 1993-02-18 |
CA2090758C (en) | 1998-07-28 |
WO1993000500A2 (en) | 1993-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |