Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Torgeir Torkildsen"'
Autor:
Erik Nyrnes, Henry Ferguson Wilson, Torgeir Torkildsen, John Lionel Weston, Roger Ekseth, Kazimir Kovalenko, Andrew G. Brooks
Publikováno v:
SPE Drilling & Completion. 25:438-447
Summary Position-uncertainty estimates are used to determine if there is adequate probability of hitting a geological target, of avoiding collision with offset wells, and of drilling a successful relief well in the event of a blowout. These high-valu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfa511c68d9215f88ce449a3b9910a3e
https://doi.org/10.2118/133417-pa
https://doi.org/10.2118/133417-pa
Publikováno v:
Journal of Energy Resources Technology. 128:343-345
Magnetic materials in the drilling fluid used for drilling a petroleum well can significantly shield the Earth’s magnetic field as measured by magnetic sensors inside the drilling pipe. This has been shown to sometimes cause significant errors in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3542fc64c995b53b96d3060c86ab34de
https://doi.org/10.1115/1.2358151
https://doi.org/10.1115/1.2358151
Autor:
Arild Fjogstad, Torgeir Torkildsen, Kristoffer Tellefsen, Per Amund Amundsen, Songxiong Ding, Arild Saasen
Publikováno v:
All Days.
The magnetic property of the drilling fluid is one of the substantial error sources for the determination of azimuth while drilling deviated wells. These errors may be in the range of 1-200m if drilling long, deviated intermediate sections. Therefore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f65d9d26102ef22baed76273783ec564
https://doi.org/10.2118/150548-ms
https://doi.org/10.2118/150548-ms
Publikováno v:
All Days.
The magnetic property of the drilling fluid is one of the substantial error sources for the determination of magnetic azimuth for wellbores. Both the weight material, cuttings, clay and other formation material plus metal filings from the tubular wea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a2e0b4f8fdb0345e4a156a5296d5480
https://doi.org/10.2118/151039-ms
https://doi.org/10.2118/151039-ms
Autor:
Jon Bang, Torgeir Torkildsen
Publikováno v:
All Days.
The magnitudes of certain significant error terms vary with latitude, for both magnetic and gyroscopic surveying instruments. This implies an increase in surveyed azimuth uncertainty, as one moves into northern regions. This work analyzes the influen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc045526b9034f7b19ffe2bf6cb62500
https://doi.org/10.2118/149699-ms
https://doi.org/10.2118/149699-ms
Autor:
Jon Bang, Torgeir Torkildsen
Publikováno v:
SPE Arctic and Extreme Environments Conference and Exhibition.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::379a35f9daf00f26a5c722b9a0ff95a3
https://doi.org/10.2118/149699-ru
https://doi.org/10.2118/149699-ru
Publikováno v:
All Days.
Multi-Station Analysis (MSA) is a technique widely used in MWD directional surveying to provide additional quality control and to correct for systematic errors. Although the method's potential to enhance survey quality has been demonstrated through s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06588540fec0ff76b2ce285d64df368f
https://doi.org/10.2118/125677-ms
https://doi.org/10.2118/125677-ms
Publikováno v:
All Days.
The surveyed position accuracy degrades when one approaches the magnetic and geographical poles. Both magnetic and gyroscopic tools are affected. We have analyzed the accuracy of several magnetic and gyroscopic services in a number of representative
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0adc3d4741997728d5c82d38ca5e2b7
https://doi.org/10.2118/119661-ms
https://doi.org/10.2118/119661-ms
Publikováno v:
All Days.
Summary Magnetic contamination of the drilling fluid may contribute significantly to errors in directional surveying of wellbores. Such contaminations shield the field measured by the magnetic sensors in measurement-while-drilling (MWD) directional t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9594fc98756cf6af5f9a37aaf497bd4
https://doi.org/10.2118/113206-ms
https://doi.org/10.2118/113206-ms
Autor:
Torgeir Torkildsen, Arild Fjogstad, Arild Saasen, Inge Edvardsen, Tor Henry Omland, Per Amund Amundsen
Publikováno v:
All Days.
The drilling fluid may degrade the accuracy of magnetic azimuth and borehole position significantly so that it complicates the drilling operation and reduces the possibility to hit the planned targets. As an example: Azimuth is distorted up to 5° be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dc35d793a5c9594cfc5a4c57e667fb3
https://doi.org/10.2118/87169-ms
https://doi.org/10.2118/87169-ms