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receiver is adjusted for a maximum output of 80mv. <br />B. Signal output of Sft receiver is adjusted in order to compensate for energy <br />loss related to the 3ft., due to the extended travel time of 114 microseconds. <br />C. Panels aze calibrated for response and linearity . <br />D. A full display of calibration is recorded for every tool. Shop calibrations <br />aze required monthly or more frequently as needed. A copy of the shop <br />calibration should be attached to the log. <br />Well Site Calibration <br />A. With tool in hole and in fluid, panel output is calibrated for a lineaz output <br />relation of 100mv. for 10 chart divisions.-10 my/div. This calibration is <br />done in order to scale the amplitude values. <br />B. Secondary amplitude X4 or XS is calibrated. <br />C. Internal calibration cycle of 35mv amplitude and 50 microseconds <br />wavelength is activated; The gate is set on the cycle, and amplitude <br />deflection is adjusted according to previous 0-100mv settings. <br />D. Calibration cycle is deactivated. Tool signal on 3 foot receiver is present; <br />the gate is set on the first compressional cycle, and amplitude reading is <br />verified. <br />IV. Complete Log Heading. <br />V. Run V DL, MSG, Signature, X-V plot on 200-1200 microsecond time scale. <br />VI. Run repeat sections (200' minimum) through intervals of interest or intervals with <br />questionable bond. <br />VII. Logging speed should be 1800 feetlbr. <br />VII, If tool is improperly centralized, do not continue to log. Pullout of hole and adjust or <br />replace centralizers. <br />IX. Upon completion of logging run, check surface calibration. <br />10 <br />