The range of induction-coil magnetic field sensors for geophysical explorations

Poliakov, S. V.; Reznikov, B. I.; Shchennikov, A. V.; Kopytenko, E. A.; Samsonov, B. V.

doi:10.3103/s0747923917010078

Cited by 17 publications

(6 citation statements)

References 4 publications

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“…The sensor based on magnetoplasmonic crystal as a probe provides high sensitivity at small spot size which makes it sufficient and promising for biomedical applications and allows one to scan the surface area without moving the probe element. Magneto-modulati on 9,13,39,40 Magnetooptical 41,42 Magnons 16…”

Section: Experimental Demonstrationmentioning

confidence: 99%

Magnetic field sensor based on magnetoplasmonic crystal

Belyaev

Rodionova

Grunin

et al. 2020

Sci Rep

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Here we report on designing a magnetic field sensor based on magnetoplasmonic crystal made of noble and ferromagnetic metals deposited on one-dimensional subwavelength grating. The experimental data demonstrate resonant transverse magneto-optical Kerr effect (TMOKE) at a narrow spectral region of 50 nm corresponding to the surface plasmon-polaritons excitation and maximum modulation of the reflected light intensity of 4.5% in a modulating magnetic field with the magnitude of 16 Oe. Dependences of TMOKE on external alternating current (AC) and direct current (DC) magnetic field demonstrate that it is a possibility to use the magnetoplasmonic crystal as a high-sensitive sensing probe. The achieved sensitivity to DC magnetic field is up to 10 −6 Oe at local area of 1 mm 2 .

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Section: Experimental Demonstrationmentioning

confidence: 99%

Magnetic field sensor based on magnetoplasmonic crystal

Belyaev

Rodionova

Grunin

et al. 2020

Sci Rep

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“…Let us briefly review the latest developments for conventional magnetic field sensors with respect to the magnetic field resolution: There are still improvements in conventional-type induction coil sensors, e.g., Poliakov et al (2017). Besides those, in the past decade, new induction coil sensors were developed, so-called B field coils (Macnae 2012) which allow for the measurement of the magnetic field with a noise floor of ∼ 10fT∕ √ Hz but at the expense of significant low-frequency noise.…”

Section: Appendix 2 Magnetometer Specificationmentioning

confidence: 99%

SQUIDs for magnetic and electromagnetic methods in mineral exploration

et al. 2022

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Research on quantum sensors for the detection of magnetic fields (quantum magnetometers) is one of the fast-moving areas of Quantum Technologies. Since there exist expectations about their use in geophysics, this work will provide a brief overview on the various developing quantum technologies and their individual state of the art for implementing quantum magnetometers. As one example, the developments on superconducting quantum interference devices, so-called SQUIDs as a specific implementation of a quantum magnetometer, are presented. In the course of this, SQUID instrument implementations and associated demonstrations and case studies will be presented. An airborne vector magnetometer with ultra-low noise ($$<10 \mathrm{fT}/\sqrt{\mathrm{Hz}}$$ < 10 fT / Hz ) and high dynamic range of $$>32 \mathrm{bit}$$ > 32 bit will be introduced which has the prospect to be applied for the magnetic method in parallel with electromagnetic methods such as passive audio-frequency magnetics or semi-airborne methods using active transmitters such as elongated grounded dipole sources. The according signals are separated in the frequency domain. A second implementation is an airborne full tensor gradiometer instrument will be discussed which has shown already a number of successful case studies and which turned into commercial operation in the past years. Besides the airborne instrument, a very successful implementation of quantum magnetometers is the SQUID-based receiver for the ground-based transient electromagnetic method. Today it is a mature technology which has been in commercial use for more than a decade and has led to a number of discoveries of conductive ore bodies. One case study will be presented which demonstrates the performance of this instrument. Finally, future prospects of using quantum magnetometers, including SQUIDs and new optically pumped magnetometers, in geophysical exploration will be discussed. Particular applications for both sensor types will be introduced.

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“…Many magnetic field sensors exist [94], but only induction coil magnetometers and fluxgate magnetic field sensors have maintained their place in the market. SQUID (Super-conducting Quantum Interference Device) were very popular in the 1980s [95] because they can be up to 1 million times more sensitive than coils, but they are very difficult to handle in operations and are at least 10 times more expensive thus do not allows the deployment of several tens or hundreds of these sensors. That leaves them for research purposes until the cost come down and operations get improved.…”

Section: Csem Processingmentioning

confidence: 99%

An Array Multi-Physics Acquisition System with Focus on Reservoir Monitoring for the Energy Transition

2022

EESRR

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During the energy transition, geophysics will need to focus on novel green energy applications and to reduce the carbon footprint of hydrocarbon production. For both reservoir, monitoring is important, in particular dynamic monitoring of reservoir fluids. For renewable energies such as geothermal, electromagnetics has always been the geophysical ‘work horse’, while mostly microseismic has been used for monitoring. For hydrocarbon reservoirs, added value toward ZERO carbon footprint is obtained by increasing the recovery factor by of 30-40 % and thus reducing the cost/carbon emission per produced barrel. In addition, CO2 is sequestered in brine saturated reservoirs and also needs to be monitored. We are addressing the fluid monitoring issue here for electromagnetics and are reviewing how hardware, methodology and application are interlinked to build a complete system. Various applications and case histories where the results can be verified by borehole logs support this. The key issue is that our measurement need to respond to geologic realistic Earth formations which are, generally speaking, anisotropic. We direct the entire design of the system in solving that problem with direc-tional sensitive measurements. Next, when we want to monitor reservoir change we require a repeatability and accuracy hereto not necessary. By carefully controlling the entire hardware design from sensor to applications stage this can be achieved and we can obtain log scale resolution from surface measurement which was hereto not possible.

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The range of induction-coil magnetic field sensors for geophysical explorations

Cited by 17 publications

References 4 publications

Magnetic field sensor based on magnetoplasmonic crystal

Magnetic field sensor based on magnetoplasmonic crystal

SQUIDs for magnetic and electromagnetic methods in mineral exploration

An Array Multi-Physics Acquisition System with Focus on Reservoir Monitoring for the Energy Transition

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