CA2620905A1 - Method and apparatus for determining destructive torque on a drilling assembly - Google Patents
Method and apparatus for determining destructive torque on a drilling assembly Download PDFInfo
- Publication number
- CA2620905A1 CA2620905A1 CA002620905A CA2620905A CA2620905A1 CA 2620905 A1 CA2620905 A1 CA 2620905A1 CA 002620905 A CA002620905 A CA 002620905A CA 2620905 A CA2620905 A CA 2620905A CA 2620905 A1 CA2620905 A1 CA 2620905A1
- Authority
- CA
- Canada
- Prior art keywords
- angular acceleration
- torque
- bottom hole
- hole assembly
- determining
- 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.)
- Granted
Links
Landscapes
- Earth Drilling (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A method and apparatus for determining destructive torque on a bottom hole assembly, includes measuring a parameter related to angular acceleration at at least one location along the drill string; comparing angular acceleration determined from the measured parameter to a selected threshold, the selected threshold being related to a moment of inertia of selected components on the drill string, and a maximum torque applicable to at least one of threaded connections between the selected components, and tubular components of the drill string; and generating a warning indication when the angular acceleration exceeds the selected threshold. The method, and an apparatus comprising means for performing the method, provide real time determination of destructive torque, thus enabling prompt remedial action for specific movement modes, reducing the chance of drill string failure.
Claims (16)
1. A method for determining destructive torque on a bottom hole assembly, comprising:
measuring a parameter related to angular acceleration at at least one location along the drill string;
comparing angular acceleration determined from the measured parameter to a selected threshold, the selected threshold related to a moment of inertia of selected components of the drill string and a maximum torque applicable to at least one of threaded connections between the selected components, and tubular components of a drill string; and generating a warning indication when the angular acceleration exceeds the selected threshold.
measuring a parameter related to angular acceleration at at least one location along the drill string;
comparing angular acceleration determined from the measured parameter to a selected threshold, the selected threshold related to a moment of inertia of selected components of the drill string and a maximum torque applicable to at least one of threaded connections between the selected components, and tubular components of a drill string; and generating a warning indication when the angular acceleration exceeds the selected threshold.
2. The method as defined in claim 1 wherein the generating a warning indication comprises reformatting a mud pressure modulation telemetry scheme.
3. The method as defined in claim 1 wherein the selected components comprise at least one of a bit, a mud motor, an MWD tool, a joint of drill pipe, a stabilizer and a drill collar.
4. The method as defined in claim 1 further comprising changing at least one drilling operating parameter in response to the generating the warning indication.
5. The method as defined in claim 4 wherein the at least one drilling operating parameter comprises at least one of weight on bit, rotary speed of the drill string and flow rate of a drilling fluid.
6. The method as defined in claim 1 wherein the parameter comprises angular acceleration.
7. The method as defined in claim 1 wherein the parameter comprises torque measured in at least one component of the bottom hole assembly.
8. The method as defined in claim 7 further comprising determining a periodicity of the torque, measuring a rotational speed variation of the bottom hole assembly, and determining angular acceleration from a waveform having amplitude corresponding to the variation of rotational speed and periodicity corresponding to the periodicity of the torque.
9. The method as defined in claim 1 wherein the parameter comprises rotational speed of the bottom hole assembly.
10. The method as defined in claim 9 further comprising determining angular acceleration from the rotational speed of the bottom hole assembly.
11. The method as defined in claim 10 wherein the determining angular acceleration comprises fitting a periodic waveform to the rotational speed of the bottom hole assembly, and determining the angular acceleration from the periodic waveform.
12. The method as defined in claim 1 wherein the parameter comprises torque applied to a drill string at the earth's surface.
13. The method as defined in claim 1 further comprising:
measuring a parameter related to axial acceleration of the bottom hole assembly;
determining axial forces from the measured parameter;
combining the determined axial forces with a torque determined from the parameter related to angular acceleration; and generating a warning signal when the combined torque and axial force exceeds a combined safe operating threshold.
measuring a parameter related to axial acceleration of the bottom hole assembly;
determining axial forces from the measured parameter;
combining the determined axial forces with a torque determined from the parameter related to angular acceleration; and generating a warning signal when the combined torque and axial force exceeds a combined safe operating threshold.
14. An apparatus for determining destructive torque on a bottom hole assembly, comprising:
a sensor measuring angular acceleration at least one location along the drill string;
means for comparing angular acceleration to a selected threshold operatively coupled to the sensor, the selected threshold related to a moment of inertia of selected components of the bottom hole assembly and a maximum torque applicable to threaded connections between the selected components; and means for generating a warning indication when the angular acceleration exceeds the selected threshold.
a sensor measuring angular acceleration at least one location along the drill string;
means for comparing angular acceleration to a selected threshold operatively coupled to the sensor, the selected threshold related to a moment of inertia of selected components of the bottom hole assembly and a maximum torque applicable to threaded connections between the selected components; and means for generating a warning indication when the angular acceleration exceeds the selected threshold.
15. The apparatus as defined in claim 14 wherein the means for generating a warning indication comprises means for reformatting a mud pressure modulation telemetry scheme.
16. The apparatus as defined in claim 14 wherein the selected components comprise at least one of a bit, a joint of drill pipe, a mud motor, an MWD tool, a stabilizer and a drill collar.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37411702P | 2002-04-19 | 2002-04-19 | |
| US60/374,117 | 2002-04-19 | ||
| CA002482922A CA2482922C (en) | 2002-04-19 | 2003-04-03 | Method and apparatus for determining drill string movement mode |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002482922A Division CA2482922C (en) | 2002-04-19 | 2003-04-03 | Method and apparatus for determining drill string movement mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2620905A1 true CA2620905A1 (en) | 2003-10-30 |
| CA2620905C CA2620905C (en) | 2011-07-12 |
Family
ID=39400591
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2620905A Expired - Fee Related CA2620905C (en) | 2002-04-19 | 2003-04-03 | Method and apparatus for determining destructive torque on a drilling assembly |
| CA2615481A Expired - Fee Related CA2615481C (en) | 2002-04-19 | 2003-04-03 | Method and apparatus for determining drill string movement mode |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2615481A Expired - Fee Related CA2615481C (en) | 2002-04-19 | 2003-04-03 | Method and apparatus for determining drill string movement mode |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2620905C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3356645A4 (en) * | 2015-10-06 | 2019-05-29 | Halliburton Energy Services, Inc. | Systems and methods for detecting downhole tool location inside a borehole |
| CN111655970A (en) * | 2017-12-04 | 2020-09-11 | Hrl实验室有限责任公司 | Continuous trajectory calculation for directional drilling |
-
2003
- 2003-04-03 CA CA2620905A patent/CA2620905C/en not_active Expired - Fee Related
- 2003-04-03 CA CA2615481A patent/CA2615481C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3356645A4 (en) * | 2015-10-06 | 2019-05-29 | Halliburton Energy Services, Inc. | Systems and methods for detecting downhole tool location inside a borehole |
| CN111655970A (en) * | 2017-12-04 | 2020-09-11 | Hrl实验室有限责任公司 | Continuous trajectory calculation for directional drilling |
| CN111655970B (en) * | 2017-12-04 | 2023-12-12 | Hrl实验室有限责任公司 | Continuous trajectory computation for directional drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2620905C (en) | 2011-07-12 |
| CA2615481C (en) | 2010-08-31 |
| CA2615481A1 (en) | 2003-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20220301 |
|
| MKLA | Lapsed |
Effective date: 20200831 |