IE850412L - Method for detecting wear of a rotatable bit - Google Patents
Method for detecting wear of a rotatable bitInfo
- Publication number
- IE850412L IE850412L IE850412A IE41285A IE850412L IE 850412 L IE850412 L IE 850412L IE 850412 A IE850412 A IE 850412A IE 41285 A IE41285 A IE 41285A IE 850412 L IE850412 L IE 850412L
- Authority
- IE
- Ireland
- Prior art keywords
- bit
- sensor
- drill
- wear
- wellbore
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000005553 drilling Methods 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 3
- 230000004913 activation Effects 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
- E21B12/00—Accessories for drilling tools
- E21B12/02—Wear indicators
-
- 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
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)
Abstract
A method and apparatus for detecting wear of a rotatable bit used to drill a wellbore are disclosed. In drilling operations, a drilling fluid is pumped down through a drill stem and is discharged through ports (14) in the drill bit (12) and into the annulus between the drill stem and the wellbore. Excessive wear of the bit (12) at a selected location is detected by a sensor (24) which is linked (28) to a restrictive device (30) capable of reducing the flow of drilling fluid through at least one port (14). To detect excessive wear of the bit (12), at least one abradable sensor (24) is located in the bit (12) at a selected location. As the drill bit (12) wears at that location, the sensor (24) abrades until finally it is activated. Activation of the sensor (24) is transmitted by a communication device such as a wire (28) or hydraulic fluid to manipulate the restricting device (30). More than one sensor may be simultaneously linked to the restricting device with communication devices to detect wear of the drill bit at differing locations. <IMAGE>
[GB2157342A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58220384A | 1984-02-21 | 1984-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IE850412L true IE850412L (en) | 1985-08-21 |
Family
ID=24328227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE850412A IE850412L (en) | 1984-02-21 | 1985-02-20 | Method for detecting wear of a rotatable bit |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS60238596A (en) |
| CA (1) | CA1237952A (en) |
| GB (1) | GB2157342B (en) |
| IE (1) | IE850412L (en) |
| IT (1) | IT1182193B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655300A (en) * | 1984-02-21 | 1987-04-07 | Exxon Production Research Co. | Method and apparatus for detecting wear of a rotatable bit |
| US7207215B2 (en) * | 2003-12-22 | 2007-04-24 | Halliburton Energy Services, Inc. | System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| GB2516450A (en) | 2013-07-22 | 2015-01-28 | Schlumberger Holdings | Instrumented rotary tools with attached cutters |
-
1985
- 1985-01-30 CA CA000473206A patent/CA1237952A/en not_active Expired
- 1985-02-12 IT IT47676/85A patent/IT1182193B/en active
- 1985-02-15 JP JP60028132A patent/JPS60238596A/en active Pending
- 1985-02-19 GB GB08504193A patent/GB2157342B/en not_active Expired
- 1985-02-20 IE IE850412A patent/IE850412L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB8504193D0 (en) | 1985-03-20 |
| JPS60238596A (en) | 1985-11-27 |
| GB2157342B (en) | 1987-05-07 |
| IT8547676A0 (en) | 1985-02-13 |
| IT8547676A1 (en) | 1986-08-12 |
| IT1182193B (en) | 1987-09-30 |
| CA1237952A (en) | 1988-06-14 |
| GB2157342A (en) | 1985-10-23 |
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