METHOD FOR DETERMINING PROPERTIES OF A FORMATION

摘要

The method for determining properties of a formation comprises disposing a well-logging tool in a borehole, the well-logging tool comprising a device for variation of temperature of the formation and two identical acoustic logging probes located symmetrically along the well-logging tool length relative to the device for variation of temperature of the formation. During the logging tool movement in the borehole continuous variation of the formation temperature, acoustic logging and measurement of formation temperature are performed. Dependencies of the measured velocity and attenuation of the Stoneley waves as functions of the measured temperature of the formation are obtained. Based on the obtained dependencies properties of the formation are determined.