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<br />Evaluation of cement -American Soda #21-16 <br />CBL and CAST tools were run in the above listed well to evaluate the placement and quality of the cement slurry. CBL/CAST logs were mn in both casings, from the base <br />of each string to surface or to the fluid level in the casing string. A cement basket is positioned near the bottom of the shorter string and cement is placed in the annulus from <br />the cement basket to near surface. <br />The logs on this well indicate the following: <br />Depth Interval Description Isolation <br />Evaluation CAST <br />Impedance Value CAST <br />Impedance Character CBL Pipe Amplitude MSG pipe signal <br />TD to 1,724' Free Pipe (long string) No isolation 1.9 Flat consistent 64, Free pipe value strong <br />1,724' Cement Basket N/A N/A N/A N/A N/A <br />1,724' [0 1,720' Bentonite Plug Good 2+ Medium activity < free pipe value Faded Slightly <br />1,720' to 1,705' Mixture of Spherlite and conventional cmt Fair 2 -4+ Med. To high Activity High, > 40 Faded Slightly <br />1,705' [0 1,672' Conventional cement Good 3 - 5+ Med. To high Acuvity Low, < 20 Faded [o none <br />1,672' [0 1,590' Mixture of Spherlite and conventional cmt Good <I - 5+ High Activity Low, < 10 None <br />1,590' to 320' Conventional cement Good 3 - 5+ Med. To high Activity Low, < 10 to 30 Faded to none <br />320' [0 260' Mixture of Spherlite and conventional cmt Good <I - 5+ High Activity Low, < 20 Faded to none <br />260' to top of log Spherelile cement Fair <I to 3 Medium activity < Gee pipe value Faded Slightly <br />