| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: alternate feed current is supplied to electrically connected central and shield electrodes of arrangement. Current I0 of the central electrode and potential öU of screen electrodes are measured relative to a reference electrode. During logging there are also measured specific resistance üc of drilling fluid and temperature t in the well. There is determined resistance of r0t circuit connecting central and shield electrodes at temperature t out of ratio: r0t=r0(1+öt), where r0 is resistance of the circuit preliminary measured at 20C; öt=t-20; and is a temperature coefficient of resistance. Further, there is calculated ratio and is determined apparent resistivity ük of rock from preliminary calculated dependencies for a row of values of specific resistance of a formation, of resistance r0 and nominal diametre of the well. ^ EFFECT: upgraded accuracy of measurements and reliability of their execution, automatic record of well influence. ^ 1 dwg |
