FIELD: mining and petroleum industries. SUBSTANCE: specific resistance of adjacent geological formations is measured from inside of fixed hole. Stationary measurements at predetermined depth are carried out by initial measuring step and subsequent first and second compensation steps correspondingly leading to higher accuracy of measurements. According to the method, sent from casing string to geological formation is first alternating current of first frequency, and second alternating current of second frequency is delivered through casing string. Possible is simultaneous realization of measuring step and both compensation steps needed for obtaining accurate results during displacement of device in vertical direction in fixed hole. EFFECT: high efficiency. 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD MEASURING SPECIFIC RESISTANCE OF EARTH FORMATIONS BY MEANS OF CASING TUBE WITH USE OF SINGLE-CORE ELECTRIC LOGGING CABLE (VERSIONS) AND GEAR FOR IMPLEMENTATION OF METHOD | 1996 |
|
RU2182716C2 |
| POWER SOURCE FOR HIGH ELECTRIC CURRENT WELDING AND METHOD FOR GENERATING WELDING ELECTRIC CURRENT | 2000 |
|
RU2210474C2 |
| PROCEDURE AND DEVICE FOR TRANSFER OR RECEPTION OF INFORMATION BETWEEN DOWNHOLE EQUIPMENT AND SURFACE | 2006 |
|
RU2419820C2 |
| SHIELDED VARIABLE-CAPACITANCE TRANSDUCER | 1994 |
|
RU2144680C1 |
| CAPACITIVE SENSOR CIRCUIT | 2007 |
|
RU2401987C2 |
| SYSTEM AND METHOD TO INDUCE ELECTROMAGNETIC FIELD WITHIN EARTH | 2013 |
|
RU2650434C9 |
| SYSTEM AND METHOD FOR MEASURING OR CREATING ELECTRIC FIELD IN WELL | 2012 |
|
RU2606737C2 |
| METHOD FOR RESISTIVITY LOGGING OF CASED WELLS | 2001 |
|
RU2176802C1 |
| METHOD FOR ELECTRICAL LOGGING CASED WELLS | 2009 |
|
RU2382385C1 |
| DESCRIBING UNDERGROUND STRUCTURE WITH FUNCTION-BASED ITERATIVE INVERSION | 2008 |
|
RU2489735C2 |
