Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea
The years ahead will see increased petroleum-related activity in the Barents Sea, with operations far off the coast of Norway. The region is at high geomagnetic latitude in the auroral zone, and therefore, directional drilling by use of magnetic reference will experience enlarged azimuth uncertainty...
Published in: | SPE Drilling & Completion |
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Language: | English |
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2014
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Online Access: | https://orbit.dtu.dk/en/publications/3175128e-f929-4f3f-a85a-224c0f3574d9 https://doi.org/10.2118/166226-pa |
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ftdtupubl:oai:pure.atira.dk:publications/3175128e-f929-4f3f-a85a-224c0f3574d9 2024-04-28T08:12:31+00:00 Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea Edvardsen, I. Nyrnes, E. Johnsen, M. G. L. Hansen, T. P. Løvhaug, U. Matzka, Jürgen 2014 https://orbit.dtu.dk/en/publications/3175128e-f929-4f3f-a85a-224c0f3574d9 https://doi.org/10.2118/166226-pa eng eng https://orbit.dtu.dk/en/publications/3175128e-f929-4f3f-a85a-224c0f3574d9 info:eu-repo/semantics/restrictedAccess Edvardsen , I , Nyrnes , E , Johnsen , M G , L. Hansen , T , P. Løvhaug , U & Matzka , J 2014 , ' Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea ' , S P E Drilling & Completion , vol. 29 , no. 2 , pp. 215-225 . https://doi.org/10.2118/166226-pa Energy Engineering and Power Technology Mechanical Engineering Bottom-hole assembly Directional drilling Drilling equipment Drills Geomagnetism Interference suppression Ionosphere Magnetic materials Offshore gas fields Oil field equipment Oil fields Surveys Continental shelves Efficient managements Magnetic disturbance Magnetic interference Magnetic monitoring Non-magnetic steel Offshore oil and gas fields Oil and gas fields Offshore oil wells accuracy assessment borehole drill bit drilling geomagnetic field magnetic method reliability analysis surveying well technology Arctic Ocean Barents Sea Norway article 2014 ftdtupubl https://doi.org/10.2118/166226-pa 2024-04-10T14:30:09Z The years ahead will see increased petroleum-related activity in the Barents Sea, with operations far off the coast of Norway. The region is at high geomagnetic latitude in the auroral zone, and therefore, directional drilling by use of magnetic reference will experience enlarged azimuth uncertainty compared with operations in the Norwegian and North Seas. Two main contributors to azimuth uncertainty are magnetic disturbances from electric currents in the ionosphere and axial magnetic interference from the drillstring. The former is more frequent in the Barents Sea than farther south, and the effect of the latter is increased because of diminished value of the magnetic horizontal component. Wellbore directional surveying for operations on the continental shelf in the North Sea and the Norwegian Sea rely on wellestablishedprocedures for near-real-time magnetic monitoring by use of onshore magnetic-reference stations. The different land and sea configuration, distant offshore oil and gas fields, higher geomagnetic latitude, and different behavior of the magnetic field require the procedures to be reassessed before being applied to the Barents Sea. To reduce drilling delays, procedures must be implemented to enable efficient management of magnetic disturbances.In some areas of the Barents Sea, the management requires new equipment to be developed and tested before drilling, such as seabed magnetometer stations. One simple way to reduce drillstring interference is increasing the amount of nonmagnetic steel in the bottomhole assembly (BHA). To maintain azimuth uncertaintyat an acceptable level in northern areas, it is crucial that wellbore-directional-surveying requirements are given high priority and considered early during well planning. During the development phase of an oil and gas field, the planned wells must be assigned adequate positional-uncertainty models and, if possible, be designed in a direction that minimizes the wellbore directional uncertainty. ©2014 Society of Petroleum Engineers. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Norwegian Sea Technical University of Denmark: DTU Orbit SPE Drilling & Completion 29 02 215 225 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Energy Engineering and Power Technology Mechanical Engineering Bottom-hole assembly Directional drilling Drilling equipment Drills Geomagnetism Interference suppression Ionosphere Magnetic materials Offshore gas fields Oil field equipment Oil fields Surveys Continental shelves Efficient managements Magnetic disturbance Magnetic interference Magnetic monitoring Non-magnetic steel Offshore oil and gas fields Oil and gas fields Offshore oil wells accuracy assessment borehole drill bit drilling geomagnetic field magnetic method reliability analysis surveying well technology Arctic Ocean Barents Sea Norway |
spellingShingle |
Energy Engineering and Power Technology Mechanical Engineering Bottom-hole assembly Directional drilling Drilling equipment Drills Geomagnetism Interference suppression Ionosphere Magnetic materials Offshore gas fields Oil field equipment Oil fields Surveys Continental shelves Efficient managements Magnetic disturbance Magnetic interference Magnetic monitoring Non-magnetic steel Offshore oil and gas fields Oil and gas fields Offshore oil wells accuracy assessment borehole drill bit drilling geomagnetic field magnetic method reliability analysis surveying well technology Arctic Ocean Barents Sea Norway Edvardsen, I. Nyrnes, E. Johnsen, M. G. L. Hansen, T. P. Løvhaug, U. Matzka, Jürgen Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea |
topic_facet |
Energy Engineering and Power Technology Mechanical Engineering Bottom-hole assembly Directional drilling Drilling equipment Drills Geomagnetism Interference suppression Ionosphere Magnetic materials Offshore gas fields Oil field equipment Oil fields Surveys Continental shelves Efficient managements Magnetic disturbance Magnetic interference Magnetic monitoring Non-magnetic steel Offshore oil and gas fields Oil and gas fields Offshore oil wells accuracy assessment borehole drill bit drilling geomagnetic field magnetic method reliability analysis surveying well technology Arctic Ocean Barents Sea Norway |
description |
The years ahead will see increased petroleum-related activity in the Barents Sea, with operations far off the coast of Norway. The region is at high geomagnetic latitude in the auroral zone, and therefore, directional drilling by use of magnetic reference will experience enlarged azimuth uncertainty compared with operations in the Norwegian and North Seas. Two main contributors to azimuth uncertainty are magnetic disturbances from electric currents in the ionosphere and axial magnetic interference from the drillstring. The former is more frequent in the Barents Sea than farther south, and the effect of the latter is increased because of diminished value of the magnetic horizontal component. Wellbore directional surveying for operations on the continental shelf in the North Sea and the Norwegian Sea rely on wellestablishedprocedures for near-real-time magnetic monitoring by use of onshore magnetic-reference stations. The different land and sea configuration, distant offshore oil and gas fields, higher geomagnetic latitude, and different behavior of the magnetic field require the procedures to be reassessed before being applied to the Barents Sea. To reduce drilling delays, procedures must be implemented to enable efficient management of magnetic disturbances.In some areas of the Barents Sea, the management requires new equipment to be developed and tested before drilling, such as seabed magnetometer stations. One simple way to reduce drillstring interference is increasing the amount of nonmagnetic steel in the bottomhole assembly (BHA). To maintain azimuth uncertaintyat an acceptable level in northern areas, it is crucial that wellbore-directional-surveying requirements are given high priority and considered early during well planning. During the development phase of an oil and gas field, the planned wells must be assigned adequate positional-uncertainty models and, if possible, be designed in a direction that minimizes the wellbore directional uncertainty. ©2014 Society of Petroleum Engineers. |
format |
Article in Journal/Newspaper |
author |
Edvardsen, I. Nyrnes, E. Johnsen, M. G. L. Hansen, T. P. Løvhaug, U. Matzka, Jürgen |
author_facet |
Edvardsen, I. Nyrnes, E. Johnsen, M. G. L. Hansen, T. P. Løvhaug, U. Matzka, Jürgen |
author_sort |
Edvardsen, I. |
title |
Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea |
title_short |
Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea |
title_full |
Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea |
title_fullStr |
Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea |
title_full_unstemmed |
Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea |
title_sort |
improving the accuracy and reliability of mwd/magnetic-wellbore-directional surveying in the barents sea |
publishDate |
2014 |
url |
https://orbit.dtu.dk/en/publications/3175128e-f929-4f3f-a85a-224c0f3574d9 https://doi.org/10.2118/166226-pa |
genre |
Arctic Arctic Ocean Barents Sea Norwegian Sea |
genre_facet |
Arctic Arctic Ocean Barents Sea Norwegian Sea |
op_source |
Edvardsen , I , Nyrnes , E , Johnsen , M G , L. Hansen , T , P. Løvhaug , U & Matzka , J 2014 , ' Improving the accuracy and reliability of MWD/magnetic-Wellbore-Directional surveying in the barents sea ' , S P E Drilling & Completion , vol. 29 , no. 2 , pp. 215-225 . https://doi.org/10.2118/166226-pa |
op_relation |
https://orbit.dtu.dk/en/publications/3175128e-f929-4f3f-a85a-224c0f3574d9 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.2118/166226-pa |
container_title |
SPE Drilling & Completion |
container_volume |
29 |
container_issue |
02 |
container_start_page |
215 |
op_container_end_page |
225 |
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1797579363252699136 |