Abstract: The disclosure relates to an ultrasound-based method for calculating wall thickness, or a change thereof, in points within a monitored area of a wall, said method being based on measurement results from a process in which acoustic, guided waves are transmitted from transmitting transducers, propagated in the wall, received by receiving transducers and then recorded. Each recorded signal is interpreted as carrying information about the wall thickness, or change thereof since a previous measurement, throughout a measured section comprising a two-dimensional area of the wall. The wall thickness, or change thereof, is at least in part calculated for each segment of the monitored area, wherein a segment is a subset of the monitored area contained in a distinct combination of the measured sections. The disclosure further relates to an apparatus for acoustic, guided-wave measurement or monitoring of wall thickness, or a change thereof.

Abstract: The disclosure relates to an ultrasound-based method for calculating wall thickness, or a change thereof, in points within a monitored area of a wall, said method being based on measurement results from a process in which acoustic, guided waves are transmitted from transmitting transducers, propagated in the wall, received by receiving transducers and then recorded. Each recorded signal is interpreted as carrying information about the wall thickness, or change thereof since a previous measurement, throughout a measured section comprising a two-dimensional area of the wall. The wall thickness, or change thereof, is at least in part calculated for each segment of the monitored area, wherein a segment is a subset of the monitored area contained in a distinct combination of the measured sections. The disclosure further relates to an apparatus for acoustic, guided-wave measurement or monitoring of wall thickness, or a change thereof.

Abstract: Systems, methods and computer storage mediums accurately measure wall thickness in a region of interest included in complex curved structures. Embodiments of the present disclosure relate to generating a wall thickness loss distribution map of a region of interest that provides an accurate representation of wall thickness for the region of interest included in a complex curved structure. The wall thickness loss distribution map is generated from a two-dimensional model of the wall thickness loss distribution of the region of interest. The two-dimensional model is converted from a three-dimensional representation of the wall thickness loss distribution of the region of interest. The three-dimensional representation of the wall thickness is generated by ultrasonic waves generated by a transducer system that propagated through the region of interest.

Abstract: A method and an apparatus for guided-wave tomographic measurement or monitoring of wall thicknesses of the walls of pipes and similar structures are disclosed. The method is characterized in that use is made of transducers (205) preferably positioned in at least two groups of a plurality of transducers (305?-305?) arranged in a spaced apart pattern on the external surface of the structures, the transducers individually transmit ultrasound signal into the pipe wall 204, in that each ultrasound signal propagates within the pipe wall 204 from the transmitting transducer and is received at one or several receiving transducers, and the received ultrasound signal is converted to an electrical signal by the receiving transducers and recorded by the transceiver (20). Measurements are performed by using a further plurality of transducers (406, 506) that are placed apart from the two groups of a plurality of transducers (305?-305?).

Abstract: Systems, methods and computer storage mediums accurately measure wall thickness in a region of interest included in complex curved structures. Embodiments of the present disclosure relate to generating a wall thickness loss distribution map of a region of interest that provides an accurate representation of wall thickness for the region of interest included in a complex curved structure. The wall thickness loss distribution map is generated from a two-dimensional model of the wall thickness loss distribution of the region of interest. The two-dimensional model is converted from a three-dimensional representation of the wall thickness loss distribution of the region of interest. The three-dimensional representation of the wall thickness is generated by ultrasonic waves generated by a transducer system that propagated through the region of interest.

Abstract: Systems, methods and computer storage mediums accurately measure wall thickness in a region of interest included in complex curved structures. Embodiments of the present disclosure relate to generating a wall thickness loss distribution map of a region of interest that provides an accurate representation of wall thickness for the region of interest included in a complex curved structure. The wall thickness loss distribution map is generated from a two-dimensional model of the wall thickness loss distribution of the region of interest. The two-dimensional model is converted from a three-dimensional representation of the wall thickness loss distribution of the region of interest. The three-dimensional representation of the wall thickness is generated by ultrasonic waves generated by a transducer system that propagated through the region of interest.

Abstract: A method and an apparatus for guided-wave tomographic measurement or monitoring of wall thicknesses of the walls of pipes and similar structures are disclosed. The method is characterized in that use is made of transducers (205) preferably positioned in at least two groups of a plurality of transducers (305?-305?) arranged in a spaced apart pattern on the external surface of the structures, said transducers individually transmit ultrasound signal into the pipe wall 204, in that each said ultrasound signal propagates within the pipe wall 204 from the transmitting transducer and is received at one or several receiving transducers, and said received ultrasound signal is converted to an electrical signal by the receiving transducers and recorded by the transceiver (20), and further characterized in that measurements are performed by using a further plurality of transducers (406, 506) that are placed apart from the two groups of a plurality of transducers (305?-305?).

Abstract: Systems, methods and computer storage mediums accurately measure wall thickness in a region of interest included in complex curved structures. Embodiments of the present disclosure relate to generating a wall thickness loss distribution map of a region of interest that provides an accurate representation of wall thickness for the region of interest included in a complex curved structure. The wall thickness loss distribution map is generated from a two-dimensional model of the wall thickness loss distribution of the region of interest. The two-dimensional model is converted from a three-dimensional representation of the wall thickness loss distribution of the region of interest. The three-dimensional representation of the wall thickness is generated by ultrasonic waves generated by a transducer system that propagated through the region of interest.

Abstract: A method of directional drilling which comprises an intelligent non-invasive ultrasonic sensors that can detect the approaching of an existing well and then can stop and redirect the directional drilling to prevent collisions with preexisting wells.

Abstract: The present invention concerns a method of quantifying, detecting and localizing leaks or flows of liquid, gasses, or particles, in an oil or gas producing well (230). The method utilizes an acoustic transducer (150) arranged in the well (230).

Abstract: A method is described to register structural features in an acoustic conducting material, such as the sheet material of a pipe, a duct, container or the like, where instrumentation fitted at the surface of the material, is used to emit and receive signals in/through the solid material and also to register changes in the received signals as a consequence of changes in the material structure. The method is characterised in that a sensor, or several sensors mutually spaced apart, is (are) arranged to be in contact with the surface of the material, and the sensor(s) is (are) arranged to emit and receive signals to provide an acoustic network with information about the structure of the material, and that the received acoustic signals are compared to previous acoustic signals to ascertain the existence of structural changes in the solid material, and any occurrences of defects in the solid material, and also the position of such defects. A system to carry out the method is also described.