| 摘要 |
The invention relates to a method of correlating two or more overlapping wel l logs generated by a well logging device which, in use, is positioned in a we ll and is mounted to an elongate member extending along the well to the surface , movement of the elongate member at the surface controlling movement of the logging device along the well. The method comprises: (a) receiving sets of logging data for two or more spatially overlapping logs generated by the logging device, each set comprising measures of a characteristic of the well at longitudinally spaced positions along the well; (b) receiving measurement data for the period or periods of log generation, the measurement data comprising measurements of the load on the elongate member and measurements of the surface position of the elongate member; and (c) correlating the sets of logging data by determining an elongate member compliance which corrects the positions of the measured well characteristics. The corrections in step (c) are performed on the basis of a correction function which relates the positi on of the logging device to at least (i) the measured load on the elongate member, (ii) the measured surface position of the elongate member, and (iii) the compliance of the elongate member.
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