Apparatus for the measurement of ore in mine ore benches or ore stockpiles is disclosed, the apparatus comprising: a mobile platform, defining a platform zone, wherein the mobile platform is positionable on or above a mine ore bench or stockpile; and at least one magnetic resonance (MR) sensor comprised in the mobile platform. The MR sensor includes a main loop and a drive loop located above the main loop. A magnetic resonance sensor control system is provided and configured to control at least one of: the positioning of the at least one MR sensor relative to the platform zone and/or mine ore bench or ore stockpile; the positioning of elements comprised in the MR sensor relative to each other; electromagnetic suppression characteristics of the at least one MR sensor; and/or sensitivity of the at least one MR sensor as a function of distance of the sensor from the mine ore bench or ore stockpile.

Disclosed herein are methods for testing wettability of dense oil reservoir. The method comprises: by using a nuclear magnetic resonance testing method, testing nuclear magnetic resonance maps of the dense oil reservoir in the saturated water state and in the saturated oil state; by using the nuclear magnetic resonance maps, analyzing a water-wetting degree and an oil-wetting degree of the dense oil reservoir; calculating a mixed wettability index of the dense oil reservoir, and estimating the wettability of the dense oil reservoir according to the mixed wettability index. This disclosure can effectively improve testing efficiency, quantitatively analyze the water-wetting degree and the oil-wetting degree of the dense oil reservoir, and improve accuracy of testing results.

Analyzing crude oils and, more specifically, indirectly measuring asphaltene concentration in crude oils may be performed via nuclear magnetic resonance (NMR) techniques. For example, determining the asphaltene concentration of a crude oil sample having an unknown concentration of asphaltene and having the API gravity of about 20 to about 41 may be achieved by applying a measured NMR property of the unknown sample to a mathematical regression for asphaltene concentration in crude oil as a function of an NMR property according to the following equation where C is the asphaltene concentration, k is the Huggins constant that describes the solvent quality, [] is the intrinsic viscosity.

[00001]$\frac{1}{T_1}=\frac{1}{T_2}1+\left[\right].Math.C+{k\left[\right]}^2.Math.C^2$

The disclosure relates to a locating system, comprising at least one hand-held locating sensor, which is provided for capturing locating data related to objects to be located that are hidden under an examination surface, a position sensor, which is provided for capturing position data, which can be associated with the locating data, and an evaluating unit, which is provided for determining at least two-dimensional map information from the locating data and the position data and providing said at least two-dimensional map information. According to the disclosure, the locating system comprises at least one data source, which is provided for providing data for the purpose of a modification of the at least two-dimensional map information.

A hand-held locating apparatus comprises at least one hand-held locating device for acquiring locating data on objects that are hidden below a surveyed surface and are to be located, and comprises a position sensor for sensing position data of the locating device in relation to the surveyed surface. The locating system includes at least one evaluation device for determining directionally and/or spatially resolved location information from the locating data in a first mode of operation of the locating system without repositioning the locating device in relation to the surveyed surface and for determining at least three-dimensional locating information from the locating data and the position data by assigning locating data to position data in a second mode of operation. Also disclosed is a method for locating objects hidden below a surveyed surface, wherein the at least two modes of operation of the locating system can be selected.

A hand-held locating apparatus comprises at least one hand-held locating device for acquiring locating data on objects that are hidden below a surveyed surface and are to be located, and comprises a position sensor for sensing position data of the locating device in relation to the surveyed surface. The locating system includes at least one evaluation device for determining directionally and/or spatially resolved location information from the locating data in a first mode of operation of the locating system without repositioning the locating device in relation to the surveyed surface and for determining at least three-dimensional locating information from the locating data and the position data by assigning locating data to position data in a second mode of operation. Also disclosed is a method for locating objects hidden below a surveyed surface, wherein the at least two modes of operation of the locating system can be selected.

The disclosure relates to a method for operating an imaging location device by which at least two-dimensional map information is generated by location of concealed location objects under an examination surface. It is proposed that a handling instruction for guiding the location device is derived using an evaluation unit of the location device from positioning data determined by means of a location unit of the location device and/or from position data determined by means of a position sensor of the location device and/or from system parameters of the location device, in order to obtain optimized accrual of map information relating to the location.

An imaging locating device includes a first locating apparatus, a position sensor, and an evaluation apparatus. The first locating apparatus is configured to detect locating data in relation to objects to be located. The objects are concealed under an examination surface. The position sensor is configured to detect position data of the locating device in relation to the examination surface. The evaluation apparatus is configured to determine a first at least two-dimensional map information items by assigning the locating data of a first category from the first locating apparatus to the position data. The evaluation data is further configured to determine at least one further at least two-dimensional map information item. The at least one further at least two-dimensional map information item differs from the first at least two-dimensional map information item.

A method of sensing motion in an MRI scanner includes transmitting at least two tones having different frequencies, using intermodulation to combine the two tones, transmitting the two tones as a combined signal during an MRI scan of a patient, receiving the combined signal using a receiver in the MRI scanner, demodulating the combined signal to produce a demodulated signal, and analyzing the demodulated signal to detect motion of the patient during the MRI scan.