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_ 154 <br />WELL FBR 7 <br />Date Started: 9/21/79 Drilled by: T. Leach <br />Starner Drilling <br />Date Completed: 9/24/79 <br />Rig: Gardner-Denver Air Rotary, <br />Location: SW 1/4, SW 1/4, Sec 11 T5N R86W 6 1/4 inch tricone bit <br />Total Depth: 997 ft Logged by: D. Lundy, Geologist <br />Brown and Caldwell <br />Well Casing Length: 940.9 ft <br />Geophysical Logging by: <br />Elevation Well Casing lop: 6692.2 ft B. Navakovich, Geologist <br />Century Geophysical Corp. <br />Ground Surface Elevation: 6690.9 ft. <br />Depth <br />~ range, Character of Materials <br />t feet <br />0-5 SILT medium brown; sandy; firm; dry to moist <br />5-15 SAND brown; silty; soft to firm; moist <br />15-20 SANDSTONE light greyish-tan; silty to medium; weathered; <br />soft to moderately hard; moist <br />20-100 SANDSTONE light grey; silty to fine; soft to moderately hard <br />and consolidated; talc-cemented; dry up to 90 ft; interbeds of <br />grey shale 65-70 ft <br />100-115 SILTSTONE AND SHALE medium to dark grey; black plant debris, <br />coarse sand size; siltstone hard, shale soft and clayey; wet <br />115-275 SANDSTONE light grey; silty to medium, mostly fine; very little <br />talc-cement; less indurated than above sandstone; coally silt- <br />stone at 195-198 ft <br />275-320 SANDSTONE, SILTSTONE AND SHALE light grey, medium to dark grey <br />and black, respectively; interbeds up to 4 ft thick; lithologies <br />similar to above <br />320-335 SHALE AND SILTSTONE black and dark grey; soft to well indurated; <br />talc-cemented <br />335-375 SANDSTONE light grey; very fine to medium, mostly fine; <br />moderately indurated, talc-cemented; minor interbeds of dark <br />grey siltstone increasing with depth <br />