发明名称 |
ELECTRICAL CASED WELL LOGGING METHOD |
摘要 |
FIELD: physics. ^ SUBSTANCE: invention relates to well logging and can be used to determine electrical resistance of rock formations surrounding a well cased by a metal column. First and second potential differences are determined using combined measurements of two devices for measuring small quantities which measure voltage drop between neighbouring electrodes of a set of three equidistant measuring electrodes. When determining resistance of a section of a column, non-uniformity of flow of currents transmitted to current electrodes upwards and downwards the column is taken into account. ^ EFFECT: suppressing the dependency of the measured resistivity of rock formations from systematic multiplicative error of the devices for measuring small quantities, high quality and reliability of measurements. ^ 9 dwg |
申请公布号 |
RU2467358(C2) |
申请公布日期 |
2012.11.20 |
申请号 |
RU20110104094 |
申请日期 |
2011.02.04 |
申请人 |
STEPANOV ANDREJ STEPANOVICH |
发明人 |
STEPANOV ANDREJ STEPANOVICH;KASHIK ALEKSEJ SERGEEVICH;RYKHLINSKIJ NIKOLAJ IVANOVICH |
分类号 |
G01V3/20 |
主分类号 |
G01V3/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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