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C40 <br />Table C24. Miscellaneous information pertaining to well 21012-7L. <br />Hydrologic ~~~ <br />Zone <br />Location <br />Monitored: Lower Sandstone Facies Number: 21012-7L <br />1st stage Surface <br />Date Drilled: 9/24/79 Total Depth: 920 ft. Elevation: <br />2nd Stage 10/17/79 <br />Drill or <br />Date Logged: Logged Depth: Core Hole: <br />(GAMMA) <br />REMARKS: <br />Top "D" Coal = 756 ft. <br />Top "C" Coal (Gamma Kick) = 777 ft. <br />Top "B" Horizon sandstone = 813 ft. <br />Dept to markers vary from hole to hole because <br />of differences in ground surface elevation 2" inside <br />and the natural dip of the sediments. Ground ~1/ Diameter steel <br />Surface Pipe <br />First stage of completion: <br />Placed 5 gallons of sand on <br />baskets then pumped in 10 sacks <br />cement on top of the sand. • <br />Upper <br />Second state of completion: 350' Sandstone <br />Placed 450 gallons of a mixture of sure Top Plug Facies <br />gel and quick gel (hald and half) on <br />top of first stage cement. <br />Bottom two joints (42 ft.) of 2 inch pipe 537' Top of coal <br />perforated with 3 rows of torch cut slots. zone @ 536.5' <br />Siltstone b <br />Coal Facies <br />Bottom of coal zone 0 3°0 <br />@ 800.0' 0.4 <br />813' 812.75' <br />810.25' <br />~ Bottom 2 <br />~ joints <br />~ perforated <br />904.98' <br />Bottom of 2" pipe <br />plugged off TD 920.0' <br />• <br />