Laserfiche WebLink
AN* <br /> 1985'Y2 SOUTH BROADWAY <br /> DAUB & ASSOCIATES, INC. GRAND JUNCTION, CO 81507-9649 <br /> (970)254-1224 <br /> FAX(970)242-8438 <br /> Email:gjdaub@daubandassociates.com <br /> www.daubandassociates.com <br /> March 23, 2017 y <br /> Mr. Kent Walter �V � S I��''"` ` P!-('r471VED <br /> Bureau of Land Management Q MAR 2 $ �017 <br /> 220 Market Street <br /> Meeker, CO 81641 <br /> DIVISION OF RECLAMATION <br /> Re: Natural Soda LLC Sundry Notice for 16H-1 and 16H-R Well Design MINING&SAFETY <br /> Modifications <br /> Dear Mr. Walter: <br /> Natural Soda LLC (NS) hereby submits the attached Sundry Notice (Fo`m 3160-5). <br /> The Sundry Notice indicates the 161-1-1 and 16H-R proposed start aates and <br /> modifications to the well pair proposed completion. The original surface hole <br /> locations (SHLs) for the 16H pair have also been slightly modified, the 161-1-1 SHL is <br /> now on the north pad and the 16H-R SHL is on the south pad. The SHLs were <br /> modified to better fit the rig layout and reduce potential directional drilling and <br /> collision issues. <br /> Modifications were made to the 161-1-1 production liner installation plan. NS intends <br /> on running the 4.5" production liner to surface instead of using a liner hanger. An <br /> annular packer will be installed above the intermediate casing shoe to seal the <br /> annulus between the intermediate casing and production liner. This will allow NS to <br /> pressure test the outermost casing to satisfy mechanical integrity testing <br /> requirements as mandated by the EPA UIC permit. NS will keep the liner hanger <br /> method as an option. <br /> The 16H-R modifications include eliminating the 12.25" surface hole and 10.75" <br /> surface hole casing, drilling a larger intermediate hole, and potentially changing the <br /> size of the drill out hole to improve the connection with the 161-1-1 lateral. <br /> The downhole equipment and cementing strategies will not change. Cement <br /> volumes and the sizes of the downhole equipment will be modified to accommodate <br /> the specifications described above. <br /> Should you have any questions or comments, please contact me at (970) 254-1224 <br /> or(970) 216-1010 (c), or Kirk Daehling at (888) 464-7632 ext. 114. <br /> Sincerely, <br /> Gerald J. Daub PG, CPG <br /> President <br /> Daub & Associates, Inc. <br /> SPECIALIZING IN PROFESSIONAL GEOLOGICAL, ENVIRONMENTAL, HYDROLOGICAL,GEOTECHNICAL AND PERMITTING SERVICES <br />