Magnetic Properties Services

Measuring magnetic susceptibility and other magnetic properties are among the paleomagnetic services provided by Applied Paleomagnetics to the petroleum and geotechnical industries worldwide since 1986. Magnetic susceptibility and other magnetic properties can be measured using samples from surface outcrops, subsurface cores, or cuttings from subsurface cores. The Applied Paleomagnetics laboratory is equipped for measuring magnetic susceptibility, NRM intensity and direction, Koenigsberger ratio, determining magnetic mineralogy, and age-dating magnetic minerals. Our magnetic properties services can be used to identify trace amounts (ppm) of magnetic minerals like magnetite, hematite, pyrrhotite, and goethite by a variety of methods used in rock magnetism and environmental magnetism. Magnetic techniques used to identify magnetic minerals include thermal demagnetization of composite IRM and environmental magnetism plots; these methods use isothermal remanent magnetization, magnetic susceptibility, and magnetic coercivity to determine magnetic mineralogy and grain-size distributions by comparison with magnetite, hematite, pyrrhotite, and goethite references samples of known grain size and composition. Our magnetic properties services have been used in oil and gas exploration and in age-dating fluid migration and diagenesis in cores from hydrocarbon reservoirs. In Western Canada, magnetically enhanced zones above microseeping hydrocarbon reservoirs exhibit increased magnetic susceptibility and distinctive magnetic properties that are diagnostic of the microseeping reservoir. In Western Canada, the strongest magnetic anomalies and highest magnetic susceptibility occur above the deepest, most prolific pinnacle reef reservoirs. Paleomagnetic applications exploit differences in magnetic properties of magnetic minerals, which can record either primary or secondary magnetization. Our magnetic properties services are designed to establish the magnetic mineralogy and grain-size distribution, which helps determine whether a magnetization is more likely to be primary or secondary and in which magnetic mineral it resides.

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