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magnetic properties for exploration

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Journal Article
Journal: Interpretation
Published: 16 February 2015
Interpretation (2015) 3 (2): SL1-SL13.
... information. Williams and Dipple (2007) explore mineral abundance estimates with drill data and 3D property distributions obtained by inversion of magnetic and gravity data with geologic reference models. We first examine lithology characterization using general physical property information expected...
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Series: AAPG Studies in Geology
Published: 01 January 2002
DOI: 10.1306/St48794C5
EISBN: 9781629810591
... for hydrocarbon exploration, and we have achieved 85% exploration success using ground-based magnetic and radiometric techniques in Western Canada. Differences in timing and duration of microseepage and differences in composition and pressure of the microseeping hydrocarbon gases from separate petroleum systems...
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Journal Article
Journal: Geophysics
Published: 17 October 2000
Geophysics (2000) 66 (2): 562-570.
... and uncorrected magnetic properties. A systematic error analysis is made in this paper using a 2-D elliptic cylinder model. Generally, demagnetization changes the effective susceptibility and remanence or the effective magnetization in both magnitude and direction. Error analyses show that demagnetization causes...
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Journal Article
Journal: Geophysics
Published: 04 October 2013
Geophysics (2013) 78 (6): D429-D444.
... complicated ore deposits in the presence of strong remanent magnetization and demagnetization. Concerning the structure of the paper, we begin with theories about magnitude magnetic anomalies and 3C borehole magnetic exploration. Subsequently, we discuss the methods of magnetization vector imaging in detail...
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Journal Article
Published: 01 May 2012
Seismological Research Letters (2012) 83 (3): 596-603.
... of bulk crustal properties using the well-established method of H -κ stacking ( Zhu and Kanamori 2000 ). The DMC now includes a method for downloading all EARS receiver functions on a station-by-station basis. We provide a shell script to convert EARS-formatted files and directory structure to a format...
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Series: Society of Exploration Geophysicists Geophysical Monograph Series
Published: 01 January 2003
DOI: 10.5382/Mono.11.37
EISBN: 9781629490069
... as a tool in geologic mapping and mineral exploration. The attenuation of gamma rays by rock or soil prevents their emanation from a depth of greater than the top 20 to 60 cm. This has profound implications for the interpretation of gamma ray spectrometric surveys. Whereas magnetic, electromagnetic...
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Journal Article
Journal: Geophysics
Published: 01 July 1991
Geophysics (1991) 56 (7): 1051-1054.
...H. V. Ram Babu; N. Kameswara Rao; V. Vijaya Kumar Abstract The role of the magnetic method in groundwater exploration is to locate structures such as dikes, faults, fractures, etc., that control the accumulation and movement of groundwater. In hard-rock terrains, the thickness of the weathered...
Journal Article
Journal: Geophysics
Published: 23 August 2012
Geophysics (2012) 77 (5): B219-B225.
... rocks have highly variable magnetic properties. Well-developed faulting further complicates the magnetic signature. Thus, the magnetic method faces its own challenges. 2012 Society of Exploration Geophysicists To invert these data and construct a 3D model of the magnetization strength, we use...
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Journal Article
Journal: Interpretation
Published: 06 April 2018
Interpretation (2018) 6 (2): T367-T375.
... ). The prominent magnetic high may be related to a deep-seated structure, and the broad magnetic low in the residual image may be the cumulative response of overlying metasediments at shallower depths. 2018 Society of Exploration Geophysicists and American Association of Petroleum Geologists...
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Journal Article
Journal: Interpretation
Published: 01 August 2013
Interpretation (2013) 1 (1): T45-T55.
... with the same magnetic data set and how this is related to their effectiveness in identifying exploration targets. The experiment involves exercises that require participants to recognize targets that have characteristics suggestive of gold-copper rich porphyry systems. The relevant magnetic anomalies have...
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Journal Article
Journal: Geophysics
Published: 10 February 2015
Geophysics (2015) 80 (2): WA99-WA111.
... within the steam-swept zone during production and the typical field geometry for fully mature SAGD sites. For this study, we adopt the geometries and properties of the Athabasca Oil Sands as an analog for real-world steam-chamber growth during SAGD production. In contrast to the strong gravity...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 119-130.
... was undertaken at the Department of Terrestrial Magnetism, Carnegie Institution of Washington. The analytical technique combines the high ionisation efficiency of N-TIMS (Negative Thermal Ionisation Mass Spectrometry) ( e.g. Creaser et al. , 1991 ) and a sample preparation procedure adapted from...
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Journal Article
Journal: Geophysics
Published: 25 April 2012
Geophysics (2012) 77 (3): WA211-WA221.
... on core samples. The present study involved theoretical modeling and experimentation on the temperature dependence of the magnetic properties (mass magnetization and magnetic susceptibility) of reservoir rocks and minerals over a range of low and high applied fields. It paves the way for correctly...
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Journal Article
Journal: Geophysics
Published: 09 February 2015
Geophysics (2015) 80 (2): WA69-WA83.
...Joseph Capriotti; Yaoguo Li ABSTRACT Understanding reservoir properties plays a key role in managing a reservoir’s resources and optimizing production. History matching is an important means for characterizing those properties. We developed a method to invert for the distribution of permeability...
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Journal Article
Journal: Geophysics
Published: 11 December 2009
Geophysics (2009) 74 (6): I55-I65.
...Richard A. Krahenbuhl; Yaoguo Li Abstract We have developed a hybrid optimization algorithm for binary inversion of geophysical data associated with lithologic inversion and time-lapse monitoring. The binary condition is designed to invert geophysical data for well-defined physical properties...
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Journal Article
Journal: Geophysics
Published: 01 January 2001
Geophysics (2001) 66 (6): 1669-1679.
...Milenko Burazer; Milinko Grbović; Vicko Žitko Abstract Because magnetic minerals may directly indicate the presence of oil and gas deposits, magnetic methods are applied to hydrocarbon exploration in oil-bearing sedimentary basins. The basic problem in applying these methods is the isolation...
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Journal Article
Journal: Geophysics
Published: 01 June 1972
Geophysics (1972) 37 (3): 507-517.
...Misac N. Nabighian Abstract This paper presents a procedure to resolve magnetic anomalies due to two-dimensional structures. The method assumes that all causative bodies have uniform magnetization and a cross-section which can be represented by a polygon of either finite or infinite depth extent...
Journal Article
Journal: Geophysics
Published: 21 September 2018
Geophysics (2018) 83 (5): J75-J84.
...Camriel Coleman; Yaoguo Li ABSTRACT Three-dimensional inversion plays an important role in the quantitative interpretation of magnetic data in exploration problems, and magnetic amplitude data can be an effective tool in cases in which remanently magnetized materials are present. Because amplitude...
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Journal Article
Journal: Geophysics
Published: 26 February 2016
Geophysics (2016) 81 (2): J35-J46.
... cuttings , in M. J. Davidson , ed., Unconventional methods in exploration for petroleum and natural gas IV : Institute for Study of Earth and Man, Southern Methodist University Press , 107 – 124 . Foote , R. S. , 1987 , Correlations of borehole rock magnetic properties with oil...
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Journal Article
Journal: The Leading Edge
Published: 01 July 2017
The Leading Edge (2017) 36 (7): 552-557.
... by The Society of Exploration Geophysicists 2017 ∗ Corresponding author. We have successfully tested the potential of rotary-wing UAV magnetic systems for mineral exploration using an off-the-shelf solution in central Sweden. Within three hours, approximately 20 km-line total-field magnetic data were...
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