GB1228965A - - Google Patents
Info
- Publication number
- GB1228965A GB1228965A GB1228965DA GB1228965A GB 1228965 A GB1228965 A GB 1228965A GB 1228965D A GB1228965D A GB 1228965DA GB 1228965 A GB1228965 A GB 1228965A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- ring
- lubricant
- pressure
- thickness
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing 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)
- Drilling And Boring (AREA)
Abstract
1,228,965. Drilling. HUGHES TOOL CO. 5 July, 1968, No. 32287/68. Heading E1F. [Also in Division F2] A drill bit comprises a cutter element rotatably mounted on a shaft, with a resilient packing ring being compressed between the element and shaft such that its thickness is not more than substantially 90% of its thickness prior to assembly of the element upon the shaft. The ring, which may be of circular, oval or square cross-section, has preferably a durometer hardness of less than 70 (Shore A) to minimise wear and may be positioned in a groove in the shaft or element. The ring may lie in a clearance groove of lesser depth but of wider extent. In one embodiment the ring is composed of an inner ring of rubber and an outer ring of tetrafluoroethylene resin. Lubricant may be fed to the bearings between the element and shaft from a reservoir which maintains the pressure of the lubricant substantially the same as the pressure of the drilling fluid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3228768 | 1968-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1228965A true GB1228965A (en) | 1971-04-21 |
Family
ID=10336264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1228965D Expired GB1228965A (en) | 1968-07-05 | 1968-07-05 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1228965A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0040845A2 (en) * | 1980-05-27 | 1981-12-02 | Eduardo Barnetche Gonzalez | A wear compensating sealing device |
| US4554985A (en) * | 1984-01-03 | 1985-11-26 | Santrade Limited | Rotary drill bit |
| GB2271794A (en) * | 1992-10-21 | 1994-04-27 | Smith International | Composite seal for rotary cone rock bits |
-
1968
- 1968-07-05 GB GB1228965D patent/GB1228965A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0040845A2 (en) * | 1980-05-27 | 1981-12-02 | Eduardo Barnetche Gonzalez | A wear compensating sealing device |
| EP0040845A3 (en) * | 1980-05-27 | 1982-09-01 | Eduardo Barnetche Gonzalez | A self compensating seal apparatus |
| US4554985A (en) * | 1984-01-03 | 1985-11-26 | Santrade Limited | Rotary drill bit |
| GB2271794A (en) * | 1992-10-21 | 1994-04-27 | Smith International | Composite seal for rotary cone rock bits |
| GB2271794B (en) * | 1992-10-21 | 1996-06-05 | Smith International | Composite seal for rotary cone rock bits |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PE20 | Patent expired after termination of 20 years |