CA2540648A1 - System and method for correcting errors in depth for measurements made while drilling - Google Patents
System and method for correcting errors in depth for measurements made while drilling Download PDFInfo
- Publication number
- CA2540648A1 CA2540648A1 CA002540648A CA2540648A CA2540648A1 CA 2540648 A1 CA2540648 A1 CA 2540648A1 CA 002540648 A CA002540648 A CA 002540648A CA 2540648 A CA2540648 A CA 2540648A CA 2540648 A1 CA2540648 A1 CA 2540648A1
- Authority
- CA
- Canada
- Prior art keywords
- drillstring
- wellbore
- depth
- corrections
- hookload
- 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
- 238000000034 method Methods 0.000 title claims abstract 10
- 238000005259 measurement Methods 0.000 title claims abstract 7
- 238000005553 drilling Methods 0.000 title claims abstract 4
- 238000012937 correction Methods 0.000 claims abstract 7
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract 2
- 229930195733 hydrocarbon Natural products 0.000 claims abstract 2
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000010276 construction Methods 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
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
Landscapes
- Geology (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Earth Drilling (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Testing Of Balance (AREA)
- Drilling And Boring (AREA)
Abstract
A method and system is disclosed for automatically correcting for depth errors in measurements taken from a drillstring during the drilling phase of the construction of a hydrocarbon wellbore. The correction is based on a stress profile which in turn is based on the states of the drilling rig, drill string description length spec, borehole description trajectory, friction factor and weight on bit.
Claims (8)
1. A method for automatically correcting for depth errors in measurements taken from a drillstring comprising the steps of:
receiving data representing measurements taken in a hydrocarbon wellbore at a plurality of depths within the wellbore from at least one sensor located on a drillstring used to drill the wellbore;
automatically calculating corrections for errors in the depth of the locations; and making use of the measured data having the depths corrected.
receiving data representing measurements taken in a hydrocarbon wellbore at a plurality of depths within the wellbore from at least one sensor located on a drillstring used to drill the wellbore;
automatically calculating corrections for errors in the depth of the locations; and making use of the measured data having the depths corrected.
2. A method according to claim 1 wherein the step of automatically calculating the corrections is based at least in part on the state of a drilling rig used to support the drillstring at the times when the measurements are taken.
3. A method according to claim 1 wherein further comprising the step of measuring the length of portions of the drillstring prior to insertion into the wellbore.
4. A method according to claim 3 wherein a time versus depth log is constructed using at least the measured length of portions of the drillstring.
5. A method according to claim 4 wherein the calculated corrections is applied to time versus depth log to generate a corrected time versus depth log, and wherein the corrected time versus depth log is combined with the data representing measurements taken in the wellbore such that a corrected depth can be attributed to said measurements.
6. A method according to claim 1 wherein said step of calculating corrections is based in part on estimates of stretch of the length of the drillstring.
7. A method according to claim 1 wherein said step of calculating corrections includes the step of computing the hookload.
8. A method according to claim 7 wherein said step of calculating corrections includes the step of computing a calculated hookload and varying the friction factor or the weight on bit until the hookload and the calculated hookload match.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0322966A GB2396697A (en) | 2002-12-27 | 2003-10-01 | Depth correction of drillstring measurements |
| GB0322966.3 | 2003-10-01 | ||
| PCT/GB2004/004123 WO2005033473A1 (en) | 2003-10-01 | 2004-09-28 | System and method for correcting errors in depth for measurements made while drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2540648A1 true CA2540648A1 (en) | 2005-04-14 |
| CA2540648C CA2540648C (en) | 2012-10-30 |
Family
ID=34400954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2540648A Expired - Fee Related CA2540648C (en) | 2003-10-01 | 2004-09-28 | System and method for correcting errors in depth for measurements made while drilling |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA2540648C (en) |
| NO (1) | NO20061563L (en) |
| WO (1) | WO2005033473A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009064732A1 (en) | 2007-11-12 | 2009-05-22 | Schlumberger Canada Limited | Wellbore depth computation |
| US8121788B2 (en) | 2007-12-21 | 2012-02-21 | Schlumberger Technology Corporation | Method and system to automatically correct LWD depth measurements |
| US8600679B2 (en) * | 2008-02-27 | 2013-12-03 | Baker Hughes Incorporated | System and method to locate, monitor and quantify friction between a drillstring and a wellbore |
| US8042624B2 (en) | 2008-04-17 | 2011-10-25 | Baker Hughes Incorporated | System and method for improved depth measurement correction |
| US7823658B2 (en) | 2008-05-09 | 2010-11-02 | Baker Hughes Incorporated | Analyzing resistivity images for determining downhole events and removing image artifacts |
| US8362915B2 (en) | 2009-10-30 | 2013-01-29 | Intelliserv, Llc | System and method for determining stretch or compression of a drill string |
| US9593571B2 (en) * | 2013-05-30 | 2017-03-14 | Schlumberger Technology Coproration | Determining correct drill pipe length and formation depth using measurements from repeater subs of a wired drill pipe system |
| GB201702825D0 (en) * | 2017-02-22 | 2017-04-05 | Ict Europe Ltd | A method for determining well depth |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2608208B1 (en) * | 1986-12-10 | 1989-04-07 | Sedco Forex Sa Services Techni | METHOD FOR MONITORING ROTARY WELL DRILLING OPERATIONS |
| US4852052A (en) * | 1987-05-28 | 1989-07-25 | Teleco Oilfield Services Inc. | Kelly-to-riser position determining system with adjustment for uncompensated heave |
| US4976143A (en) * | 1989-10-04 | 1990-12-11 | Anadrill, Inc. | System and method for monitoring drill bit depth |
| US5511037A (en) * | 1993-10-22 | 1996-04-23 | Baker Hughes Incorporated | Comprehensive method of processing measurement while drilling data from one or more sensors |
-
2004
- 2004-09-28 CA CA2540648A patent/CA2540648C/en not_active Expired - Fee Related
- 2004-09-28 WO PCT/GB2004/004123 patent/WO2005033473A1/en active Application Filing
-
2006
- 2006-04-06 NO NO20061563A patent/NO20061563L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO20061563L (en) | 2006-04-28 |
| CA2540648C (en) | 2012-10-30 |
| WO2005033473A1 (en) | 2005-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150928 |