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CEMENT' BOND LOGGING <br />GENERAGINSTRUCTIONS <br />I. Tool Centralization <br />A. Minimum of three centralizers. <br />B. Preferably bow spring or rigid aluminum centralizers. <br />C. Position centralizers immediately above and below transmitter-receiver <br />section and on top of tool assembly. <br />II. Well Data <br />A. Well name, location, serial number (if any). <br />B. Data on cement, including type, volume, time, whether pipe was <br />reciprocated or rotated or both, etc. <br />C. Casing scratcher and centralizer depths. <br />D. Unique downhole conditions. <br />E. Casing data including; size, weight, grade, joint type, depths. Well bore <br />fluid data including type, weight, and salinity. <br />G. Bottom hole temperature. <br />H. Well history for maximum previous pressure on casing. <br />III. Calibration <br />Tool should have been calibrated .it the company shop and the service company <br />should perform surface calibration before running tool is hole. Each service <br />company has their own calibration procedure. An example of one company's shop <br />and well site calibration procedure is shown below: <br />Shop Calibration <br />A. The tool is centered inside a section of 5.5", 151b/ft casing; completely <br />covered with water; tihe tank is pressured to 500 psi; the signal on the aft <br />9 <br />