FR2272254B1 - - Google Patents
Info
- Publication number
- FR2272254B1 FR2272254B1 FR7417482A FR7417482A FR2272254B1 FR 2272254 B1 FR2272254 B1 FR 2272254B1 FR 7417482 A FR7417482 A FR 7417482A FR 7417482 A FR7417482 A FR 7417482A FR 2272254 B1 FR2272254 B1 FR 2272254B1
- Authority
- FR
- France
- 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
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
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
- E21B10/246—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details with pumping means for feeding lubricant
-
- 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
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
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 |
|---|---|---|---|
| FR7417482A FR2272254A1 (en) | 1974-05-20 | 1974-05-20 | Grease-lubricated three-arm drilling tool - in which lubricant pressure always exceeds pressure of drilling mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7417482A FR2272254A1 (en) | 1974-05-20 | 1974-05-20 | Grease-lubricated three-arm drilling tool - in which lubricant pressure always exceeds pressure of drilling mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2272254A1 FR2272254A1 (en) | 1975-12-19 |
| FR2272254B1 true FR2272254B1 (online.php) | 1978-06-02 |
Family
ID=9139062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7417482A Granted FR2272254A1 (en) | 1974-05-20 | 1974-05-20 | Grease-lubricated three-arm drilling tool - in which lubricant pressure always exceeds pressure of drilling mud |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2272254A1 (online.php) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386667A (en) * | 1980-05-01 | 1983-06-07 | Hughes Tool Company | Plunger lubricant compensator for an earth boring drill bit |
| US8800689B2 (en) | 2011-12-14 | 2014-08-12 | Halliburton Energy Services, Inc. | Floating plug pressure equalization in oilfield drill bits |
| AU2011383300A1 (en) * | 2011-12-14 | 2014-07-31 | Halliburton Energy Services, Inc. | Floating plug pressure equalization in oilfield drill bits |
-
1974
- 1974-05-20 FR FR7417482A patent/FR2272254A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2272254A1 (en) | 1975-12-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |