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Geomagnetic support for directional drilling
- Authors: Soloviev A.A.1,2
-
Affiliations:
- Geophysical Center RAS
- Schmidt Institute of Physics of the Earth RAS
- Issue: Vol 94, No 10 (2024)
- Pages: 885-891
- Section: С КАФЕДРЫ ПРЕЗИДИУМА РАН
- URL: https://ogarev-online.ru/0869-5873/article/view/270983
- DOI: https://doi.org/10.31857/S0869587324100023
- EDN: https://elibrary.ru/ESNEDD
- ID: 270983
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Abstract
The high-tech directional drilling (DD) procedure for the development of hydrocarbon resources requires high precision positioning of the drill string. Such accuracy can be achieved by navigation based on the Earth’s magnetic field (EMF), which ensures hitting a given target with an error of 3 m at a distance of 15 km. However, the EMF is characterized by multi-scale variability both in space and time. Therefore, the full stack of DD geomagnetic support includes a detailed, real-time estimation of the EMF spatio-temporal variability in the deposit region and geomagnetic activity forecast. Particularly strict control of a drill string orientation is required when drilling in the Arctic region. The article is devoted to modern technologies for effective accounting of the features of the EMF space-time structure to ensure precise navigation of the drill string.
The paper is based on the report delivered at the RAS Presidium meeting on 11 June 2024.
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About the authors
A. A. Soloviev
Geophysical Center RAS; Schmidt Institute of Physics of the Earth RAS
Author for correspondence.
Email: a.soloviev@gcras.ru
член-корреспондент РАН, директор ГЦ РАН, главный научный сотрудник ИФЗ РАН
Russian Federation, Moscow; MoscowReferences
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Supplementary files
Supplementary Files
Action
1.
JATS XML
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Fig. 1. Cluster drilling under dense grid conditions (horizontal projection): ellipses of spatial uncertainty of existing wells are shown in black, those planned for drilling are shown in light gray
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3.
Fig. 2. Accuracy characteristics of quasi-static models of the magnetic field on the Earth’s surface: magnetic declination (degrees) of the main magnetic field in January 2016 (resolution ~800 km) (a), magnetic declination of the total magnetic field, including the main and lithospheric fields (resolution ~10 km) (b), magnetic declination anomaly of the magnetic field caused by lithospheric sources (resolution ~10 km) (c), local measurements of the anomalous component of the total magnetic field intensity (resolution ~10–100 m) (d)
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Fig. 3. Modern magnetic observatory (using the example of the Klimovskaya observatory, Arkhangelsk region): non-magnetic pavilions and measuring equipment Source: [6]
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Fig. 4. Modeling the position of the auroral oval on a virtual globe with a map of the Russian Federation railways Source: http://aurora-forecast.ru
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Fig. 5. Experience of rendering services of the GC RAS on geomagnetic support of directional drilling Note: the asterisks indicate the fields where the geomagnetic support technology is being implemented (GCF – gas condensate field, OGF – oil and gas field, OGCF – oil and gas condensate field)
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7.
Fig. SOLOVIOV Anatoly Alexandrovich
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