| 摘要 |
A method for identifying the location of a binding zone between a stuck tubular and a borehole includes the steps of passing a demagnetizing stress sensor 106 through the tubular on a baseline magnetization pass to magnetize the tubular. Next, the demagnetizing stress sensor 106 measures a baseline magnetization of the tubular. Once the baseline magnetization has been established, the method continues by applying a stress to the tubular and passing the demagnetizing stress sensor 106 through the tubular on a scanning pass while the tubular is stressed. The demagnetizing stress sensor 106 then measures a stress-induced magnetization of the tubular. The method concludes by comparing the baseline magnetization of the tubular against the stress-induced magnetization of the tubular. Notably, in preferred embodiments, the method includes the magnetization of the tubular in a substantially radial direction and the stresses are applied in vectors perpendicular to the radial magnetization of the tubular. |
