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<br />Evaluation of cement -American Soda #20-11 <br />CBL and CAST tools were nm m the above listed well to evaluate the placement and quality of the cement slurry. CBL/CAST logs were run 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 [his 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 [0 1,658' Free Pipe (long string) No isolation 2.1 Flat consistent 62, Free pipe value snong <br />1,658' Cement Basket N/A N/A N/A N/A N/A <br />1,658' to 1,652' Bentonite Plug Good 2+ Medium activity < free pipe value Faded Slightly <br />1,652' to 1,631' Mixture of Spherlite and conventional cmt Fair 2 - 4+ Med. To high Activity Low, < 10 to 30 Faded Slightly <br />1,631' to 1,560' Conventional cement Good 3 - 5+ Med. To high Activity Low, < 10 Faded to none <br />1,560' to 1,396' Mixture o(Spherlite and conventional cmt Good <I - 5+ High Activity Low, < 10 None <br />1,396' [0 910' Conventional cement Good 3 - 5+ Med. To high Activity Low, < 10 Faded to none <br />910' to 897' Partial cement and free Ouid Poor I.5 - 3 Flat consistent in spots > 40 Strang <br />897' to 218' Consistent cement Good 2 - 4+ Medium activity Low, < I S Faded to none <br />218' [o top of log Mixture of Spherlite and conventional cmt Good <I - 4+ High Activity Low, < 1 S Faded to none <br />