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<br />146 <br />WELL FBR 3 <br />Date Started: 9/7/79 <br />Date Completed: 9/10/79 <br />Location: SW 1/4, SW 1/4, Sec 12 T5N R86W <br />Total Depth: 845 ft <br />Well Casing Length: 847.9 ft <br />Elevation Well Casing Top: 7023.3 ft <br />Ground Surface Elevation: 7020.4 ft <br />Drilled by: T. Leach, <br />Starner Drilling <br />Rig: Gardner-Denver Air Rotary, <br />6 1/4-inch tricone bit <br />Logged by: D. Lundy, Geologist <br />Brown and Caldwell <br />Geophysical Logging by: <br />B. Navakovich, Geologist <br />Century Geophysical Corp. <br />Depth <br />range, Character of Materials <br />feet <br />0-2 TOPSOIL grey-brown; clayey, sandy silt; dry to moist <br />2-20 SANDSTONE light brown; very fine to fine grained; weathered; <br />poorly to moderately consolidated; thin interbeds of brown, <br />weathered shale; dry <br />20-80 SANDSTONE light grey; very fine to medium, mostly fine; <br />moderate to well consolidated; dry <br />80-115 SHALE dark grey to black; silty; well consolidated <br />115-135 SILTSTONE light to dark grey; very fine sand; well consolidated <br />135-215 SANDSTONE light to medium grey; silty, very fine to medium <br />grained, mostly fine; poorly to well consolidated <br />215-255 SILTSTONE AND SHALE dark grey to black; horizontally bedded <br />to homogeneous beds; dense, well consolidated <br />255-300 SANDSTONE, SILTSTONE AND SHALE same color and lithology as <br />above; beds less than 5 ft thick <br />300-800 SHALE AND SILTSTONE dark grey to black; horizontal bedding <br />and massive, structureless beds; soft to well consolidated <br />800-820 SANDSTONE dark grey; very fine to medium, mostly fine; well <br />consolidated, calc-cemented; wet <br />820-830 SANDSTONE AND COAL sandstone has lithology as above; coal has <br />vitreous luster; in beds less than 3 ft thick; minor grey <br />siltstone interbeds <br />