Abstract: A device and method for inspecting an inspection object of in the vicinity of a further object, both of electrically conductive material, the device comprising a transmitter/receiver arrangement for generating an electromagnetic field in the inspection object, and for measuring a signal indicative of a transient eddy current which is generated in the inspection object by the electromagnetic field, wherein the device further comprises a magnetic shield means, providing at least a partial magnetic shield for the transmitter/receiver arrangement in a direction other than a measurement direction; use of the device from inside an annulus between an inner and an outer tubular, and a method of operating a hydrocarbon well having a well completion, and inspecting the well completion from inside an annulus.

Abstract: A device and method for inspecting an inspection object of in the vicinity of a further object, both of electrically conductive material, the device comprising a transmitter/receiver arrangement for generating an electromagnetic field in the inspection object, and for measuring a signal indicative of a transient eddy current which is generated in the inspection object by the electromagnetic field, wherein the device further comprises a magnetic shield means, providing at least a partial magnetic shield for the transmitter/receiver arrangement in a direction other than a measurement direction; use of the device from inside an annulus between an inner and an outer tubular, and a method of operating a hydrocarbon well having a well completion, and inspecting the well completion from inside an annulus.

Abstract: Measuring the wall thickness of an electrically conductive object using a probe comprising a transmitter coil, a first receiver and a second receiver, which method comprises arranging the probe near the object; inducing transient eddy currents in the object and recording the signals of the receivers with time; measuring the wall thickness from a characteristic of one of the signals; calculating a characteristic value from a combination of the signals; and correcting the measured wall thickness for the distance between the probe and the object using a pre-determined relationship between the wall thickness and the characteristic value for different values of the distance between the probe and the object.

Abstract: A method of inspecting an electrically conductive object so as to detect the presence of an anomaly using a probe comprising a transmitter coil and a receiver coil, which method comprises the steps of: (a) selecting a set of points on the near surface of the object that are to be inspected; (b) selecting a first inspection point from the set; (c) positioning the probe at the selected inspection point, inducing eddy currents in the object and determining a characteristic value, &PHgr;, of the electromagnetic field generated by the eddy currents; (d) selecting a next inspection point from the set and repeating step (c) until all inspection points have had their turn; and (e) inferring that an anomaly is present at an inspection point if the characteristic value &PHgr; differs significantly from a norm.

Abstract: Detecting the presence of an anomaly in or near an object using a probe comprises: a) selecting a set of points on the near surface which are to be inspected, and selecting a first direction and a second direction; b) selecting a first inspection point from the set; c) positioning the probe at the selected inspection point in the first direction, inducing eddy currents in the object and determining a characteristic value of the electromagnetic field; d) positioning the probe in the second direction at the selected inspection point, inducing eddy currents in the object and determining a characteristic value of the electromagnetic field; e) selecting a next inspection point from the set and repeating steps c) and d) until all inspection points have had their turn; and f) inferring that an anomaly is present at an inspection point if a combination of the characteristic values in the first and second direction deviates significantly from a norm.

Abstract: Measuring the wall thickness of an electrically conductive object using a probe comprising a transmitter coil, a first receiver and a second receiver, which method comprises arranging the probe near the object; inducing transient eddy currents in the object and recording the signals of the receivers with time; measuring the wall thickness from a characteristic of one of the signals; calculating a characteristic value from a combination of the signals; and correcting the measured wall thickness for the distance between the probe and the object using a pre-determined relationship between the wall thickness and the characteristic value for different values of the distance between the probe and the object.

Abstract: Detecting the presence of an anomaly in or near an object using a probe comprises:

Abstract: A method of inspecting an electrically conductive object so as to detect the presence of an anomaly using a probe comprising a transmitter coil and a receiver coil, which method comprises the steps of:

Abstract: A system is disclosed for providing service to a vehicle (1) positioned at a service site (2) and billing a person or company for the service provided, wherein the vehicle (1) is provided with a vehicle processing unit (10) which includes a receiver-transmitter connected to a vehicle antenna (12) and with element for manually activating the vehicle processing unit, and wherein the service site (2) comprises element for providing service (3), a site processing unit (20) which includes a receiver-transmitter connected to a site antenna (22), which site processing unit includes element for registering the transaction and means for billing the person or company for the service provided, which system further comprises means for automatically correlating the act of servicing the vehicle with the vehicle (1), which element may comprise a passive tag (30) located at the element for providing service (5), element for energizing the passive tag located on the vehicle (1) and a secondary antenna (33) on the vehicle (1)