Abstract
Abstract During the long-term exploration and development of the oilfield, it is difficult to ensure that all well logging curves are measured by the same type of instrument, the same calibration standard and the same operation mode, For different wells, there must be systematic errors caused by these reasons. Therefore, in addition to environmental correction, it is necessary to standardise logging curves. In XJ oilfield, three logging companies use wireline logging and logging while drilling to complete logging, in multi-well logging interpretation. To eliminate the systematic errors of different measuring tools, to maximise the geological information reflected by logging curves, and to make logging interpretation follow the same standard as much as possible, it is necessary to standardise the logging curve in the whole oilfield. This article takes the standardisation of well 106 in XJ oilfield as an example, the standardisation of different methods was compared, the method of combining frequency histogram and mean variance is better.
Highlights
The practice of long-term oilfield development has proved that even if the logging curves are corrected by environmental impact correction and depth editing, there are still measurement system errors that do not reflect formation changes among different logging companies, different measuring instruments and different wells
In the multi-well logging interpretation, to eliminate the systematic error of different measuring tools, to make the logging curve reflect the geological information to the maximum extent and to make the logging interpretation
In the multi-well logging interpretation, to eliminate the systematic errors of different measuring tools, make the logging curves reflect the geological information to the maximum extent, and make the logging interpretation follow the same standard as much as possible, it is necessary to standardise [1] the logging curves in the whole oilfield
Summary
The practice of long-term oilfield development has proved that even if the logging curves are corrected by environmental impact correction and depth editing, there are still measurement system errors that do not reflect formation changes among different logging companies, different measuring instruments and different wells. In the multi-well logging interpretation, to eliminate the systematic error of different measuring tools, to make the logging curve reflect the geological information to the maximum extent and to make the logging interpretation. When the oilfield standard distribution mode of various logging data is established by key wells or standard layers, the correlation analysis technology can be used to comprehensively analyse the logging data of each well and to correct the systematic measurement error of the instrument so as to eliminate the influence of non-geological factors on the well logging and make the logging response more in line with the geological reality. In the multi-well logging interpretation, to eliminate the systematic errors of different measuring tools, make the logging curves reflect the geological information to the maximum extent, and make the logging interpretation follow the same standard as much as possible, it is necessary to standardise [1] the logging curves in the whole oilfield. In the specific application process, using a certain method alone cannot achieve the desired effect and requires multiple methods to be used in conjunction
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