Methods and systems for evaluating integrity of a tubular located within a wellbore are provided. The method includes measuring an operation parameter of the wellbore, measuring a feature of the tubular two or more times to produce an integrity log each time the feature is measured, and determining a tubular integrity analysis for the tubular by using the integrity logs and the operation parameter. The tubular integrity analysis contains parameter limitations for the tubular. The method also includes determining if tubular integrity is within or outside the parameter limitations. If the tubular integrity is within the parameter limitations, then determine a duration of integrity for the tubular. If the tubular integrity is outside of the parameter limitations, then determine a location on the tubular for loss of tubular integrity.

A downhole borehole imaging tool and methods for determining a borehole size includes a magnetoresistive system and a hub moveably coupled to a fixed tool string. The hub includes a magnet. The magnetoresistive system includes magnetoresistive sensors disposed within the fixed tool string and segregated from the magnet. During operation, a routine scan of all sensors measures, for example, the output voltage V, angle θ of magnetic field, and temperature. Measurements from each sensor may then be characterized to account for temperature and input voltages variation of the sensors. The most accurate measurement can be used to derive the position of the hub 44 using the previous baseline parameters stored in the tool.

The invention of a device has four threaded bolts that engage cooperatively threaded apertures in a base. These thread bolts hold the device in a temporary yet stationary position. The device has non-magnetic metal which allows test indicators to display accurate results free from any magnetic fields. The device has a precision bore of a nominal size. The radial value of the nominal size precision bore provides for mathematical calculation of the spindle centerline to work piece distance for measuring. The device has undercuts on both of its sides to aid in removing by hand. These undercuts allow the device to pivot from its stationary position for removal without damaging the planar surface. Alternatively, the device has four magnetic inserts, pocketed upwardly from the bottom surface.

A method for measuring a hole provided in a workpiece is provided and the method comprises: obtaining a three-dimensional point cloud model of the workpiece and a two-dimensional image of the workpiece, defining a first contour in the three-dimensional point cloud model based on an intensity difference of the two-dimensional image, defining a second contour and a third contour respectively based in the first contour, bounding a data point testing region between the second contour and the third contour, respectively defining data point sampling regions along a plurality of cross-section directions of the data point testing region, respectively sampling data points in the data point sampling regions to obtain a turning point set comprising turning points, wherein each of the turning points has the largest turning margin, connecting the turning points which are distributed in the turning point set along a ring direction to obtain an edge of the hole.

A method for measuring a hole provided in a workpiece is provided and the method comprises: obtaining a three-dimensional point cloud model of the workpiece and a two-dimensional image of the workpiece, defining a first contour in the three-dimensional point cloud model based on an intensity difference of the two-dimensional image, defining a second contour and a third contour respectively based in the first contour, bounding a data point testing region between the second contour and the third contour, respectively defining data point sampling regions along a plurality of cross-section directions of the data point testing region, respectively sampling data points in the data point sampling regions to obtain a turning point set comprising turning points, wherein each of the turning points has the largest turning margin, connecting the turning points which are distributed in the turning point set along a ring direction to obtain an edge of the hole.

Apparatus, methods, and kits are for testing a catheter for an obstruction with a lumen by a medical practitioner at the point of use. In some embodiments, an elongate member, including elongate members comprising a gauge portion, is inserted into the lumen configured to detect a reduced diameter condition.

In the case of a measuring method for measuring the geometry of a drilled hole in a workpiece, a measuring system is used which has a measuring unit (110) which, in the state which is set up ready for operation, has a measuring mandrel (120) which can be moved bidirectionally along a travel path parallel to a measuring mandrel axis (125) by means of a linear drive. The measuring mandrel (120) is calibrated at least once with the use of a reference device (200) by way of at least one reference element (230-1, 230-2) of defined internal dimensions, by the measuring mandrel (120) being moved by means of the linear drive into a calibrating location, in which a measuring sensor of the measuring mandrel is arranged in the region of the reference element. During measuring operation, the reference device (200) is arranged in a neutral location outside the travel path of the measuring mandrel (125) in such a way that the measuring mandrel can be introduced into the drilled hole to be measured without dipping through the reference element. The reference device (200) is moved, in order to carry out a calibration operation, out of the neutral location into a calibrating location, in which the reference element is arranged in a calibration position coaxially with respect to the measuring mandrel axis (125). The measuring mandrel (120) is then moved by means of the linear drive into a calibrating location, in which a measuring sensor of the measuring mandrel is arranged in the region of the reference element (230-1, 230-2). In the calibrating location, a calibration measurement for calibrating the measuring mandrel (120) is carried out.

An orthopedic guide that can comprise a base, a first attachment and a second attachment is disclosed. The base can have a plurality of connection features spaced from one another along a longitudinal extent. The base can be configured to seat on a rim of a bone. The first attachment can be selectively coupled to the base at a first end portion thereof and can be selectively coupled to the base at a second end portion thereof. The first attachment can be arch shaped when coupled to the base. The first attachment can define a first plurality of apertures. The second attachment can be selectively coupled to the base at a first end portion thereof and can be selectively coupled to the base at a second end portion thereof. The second attachment can be arch shaped when coupled to the base. The first attachment can define a second plurality of apertures.

A method for measuring a hole provided in a workpiece is provided and the method comprises: obtaining a three-dimensional point cloud model of the workpiece and a two-dimensional image of the workpiece, defining a first contour in the three-dimensional point cloud model based on an intensity difference of the two-dimensional image, defining a second contour and a third contour respectively based in the first contour, bounding a data point testing region between the second contour and the third contour, respectively defining data point sampling regions along a plurality of cross-section directions of the data point testing region, respectively sampling data points in the data point sampling regions to obtain a turning point set comprising turning points, wherein each of the turning points has the largest turning margin, connecting the turning points which are distributed in the turning point set along a ring direction to obtain an edge of the hole.

A method for measuring a hole provided in a workpiece is provided and the method comprises: obtaining a three-dimensional point cloud model of the workpiece and a two-dimensional image of the workpiece, defining a first contour in the three-dimensional point cloud model based on an intensity difference of the two-dimensional image, defining a second contour and a third contour respectively based in the first contour, bounding a data point testing region between the second contour and the third contour, respectively defining data point sampling regions along a plurality of cross-section directions of the data point testing region, respectively sampling data points in the data point sampling regions to obtain a turning point set comprising turning points, wherein each of the turning points has the largest turning margin, connecting the turning points which are distributed in the turning point set along a ring direction to obtain an edge of the hole.