DE145349C - - Google Patents
Info
- Publication number
- DE145349C DE145349C DENDAT145349D DE145349DA DE145349C DE 145349 C DE145349 C DE 145349C DE NDAT145349 D DENDAT145349 D DE NDAT145349D DE 145349D A DE145349D A DE 145349DA DE 145349 C DE145349 C DE 145349C
- Authority
- DE
- Germany
- Prior art keywords
- drill
- spring
- springs
- rod
- collar
- 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.)
- Active
Links
- 238000005553 drilling Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE145349C true DE145349C (ru) |
Family
ID=412701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT145349D Active DE145349C (ru) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE145349C (ru) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2360741A1 (fr) * | 1976-08-02 | 1978-03-03 | Dresser Ind | Dispositif de reglage du ressort d'un outil de forage |
| DE2906247A1 (de) * | 1978-02-21 | 1979-08-30 | Christensen Inc | Stossdaempfer fuer tiefbohrgestaenge |
| EP0173922A1 (en) * | 1984-09-06 | 1986-03-12 | Secoroc AB | Joint device in extension drill equipment for percussive drilling |
-
0
- DE DENDAT145349D patent/DE145349C/de active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2360741A1 (fr) * | 1976-08-02 | 1978-03-03 | Dresser Ind | Dispositif de reglage du ressort d'un outil de forage |
| DE2906247A1 (de) * | 1978-02-21 | 1979-08-30 | Christensen Inc | Stossdaempfer fuer tiefbohrgestaenge |
| EP0173922A1 (en) * | 1984-09-06 | 1986-03-12 | Secoroc AB | Joint device in extension drill equipment for percussive drilling |
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