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<br />Evaluation of cement -American Soda #29-20 <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 [he 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 [he following: <br />Depth Interval Description Isolation <br />Evaluation CAST <br />Impedance Value CAST <br />Impedance Character CBL Pipe Amplitude MSC pipe signal <br />TD to 1,800' Free Pipe (long string) No isolation 1.6 Flat consistent High, Free pipe value strong <br />1,800' Cement Basket N/A N/A N/A N/A N/A <br />1,800' to 1,788' Bentonite Plug Good >1.8 Active,> mud value <Gee pipe value Faded Slightly <br />1,788' to 1,774' Good conventional cement Good 2 -3 Medium activity Low, < 10 Faded < (ree <br />1,774' to 1,746' Good conventional cement Good 4 Medium activity Low, 10 - 20 None <br />1,746' [o 1,742' Poor quality cement between lips Poor < 2 Med. To high Activity < free pipe value Faded < free <br />1,742' [0 1,704' Good conventional cement Good 3 - 4 Med. To high Activity < free pipe value Faded to none <br />1,704' [0 1,700' Poor quality cement between lifts Poor 2 Law activity High < free pipe value Faded < free <br />1,700' [0 1,644' Good conventional cement Good 3 - 4 Medium activity Low, < 10 Faded to none <br />1,644' l0 1,627' Spherelite cement Good <I Med. To high Activity < free pipe value Faded < (ree <br />1,627' [0 1,590' Good conventional cement Good 4 - 5 Medium activity Low, < 10 None <br />1,590' to 1,586' Poor quality cement between lifts Poor 2 Low activity High < Gee pipe value Faded < free <br />1,586' to 1,534' Mixture of Spherlite and conventional cmt Good I - 5 High activity Low, <10 - IS Faded to none <br />1,534' [0 1,500' Partial cement and Gee Ouid Poor [o none <2 Flat consistent High, Free pipe value suong <br />1,500' [o 1, 186 Mixture of Spherlite and conventional cmt Good <I to 4 Med. To high Activity < free pipe value Faded < free <br />1,186 to top of log Mixture of Spherlite and conventional cmt Good 3 - 3.5 Low activity, consistent < free pipe value Faded < Gee <br />