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<br />Four existing petroleum exploration wells in the project area were e- <br /> <br />valuated for use as a test injection well. Initial studies indicated <br /> <br />re-entry of the Continental Scorup No. 1 well was feasible based on a <br /> <br />cost-risk analysis. The cost of rehabilating the Continental well was es- <br /> <br />timated at 1/3 to 1/2 the cost of completing a new well. <br /> <br />Williams Brothers completed a final report on injecting the brine <br /> <br />which contained engineering designs and specifications for the disposal <br /> <br />system, cost estimates, and a handbook for testing the injection well. In <br /> <br />this report, Williams Brothers recommended re-entering the Continental <br /> <br />Scorup No. 1 well contingent upon an inspection of its surface casing. <br /> <br />Based on this information, the Bureau began work on design specifica- <br /> <br />tions and a solicitation for bids for the construction of a test injection <br /> <br />well. Williams Brothers Engineering Company was retained to assist the <br /> <br />Bureau 1n prepar1ng this material with the option of assisting with the <br /> <br />completion of the well. During the preparation of the specifications, in- <br /> <br />formation was obtained by Williams Brothers <br /> <br />which <br /> <br />indicated <br /> <br />the <br /> <br />Continental Well was not suitable for rehabilitation. The well was not <br /> <br />straight, and pieces of drill bits were lodged at the bottom of the hole. <br /> <br />The location of the injection well was moved to the east side of the <br /> <br />Dolores River in an effort to consolidate the projects facilities. The <br /> <br />design specifications for constructing a test injection well were drafted <br /> <br />in May 1983 and reviewed by two independent drilling consultants. <br /> <br />Both <br /> <br />found problems with the design and recommended redesign of the well dril- <br /> <br />ling and completion procedures. They also recommended reanalysis of the <br /> <br />well <br /> <br />location <br /> <br />1n <br /> <br />hopes <br /> <br />of <br /> <br />finding <br /> <br />the <br /> <br />limestone <br /> <br />disposal <br /> <br />'OJ~;,D576 <br /> <br />10 <br />