Laserfiche WebLink
COMPO4YTfOM <br />~i Wellheads were set up for water level measurement with <br />either water level measuring tapes or water pressure gauges. <br />3.3 Details o£ 6:e 11 Construction <br />The following section provides specific details of <br />the construction procedures for each we11~. Information on con- <br />struction procedures and problems, drill cuttings, geophysical <br />logs, and test intervals is included. For all three well sites, <br />the deepest well is number 1, and the shallowest well is num- <br />ber 3. <br />3.3.1 We11 Site GF <br />Well GF-1 <br />Well GF-1 was initially drilled with 6-3/8 and 6-inch <br />•~ "bits. Dri11 cuttings from the Upper [•?i'_.1iz:r.s Fork :'cr::u:ior. <br />showed stratigraphically complex beds of shale, siltstone, sand- <br />stone, and coal six inches to ten feet thick. Fine, white sand <br />from the T:aenty Mile Sandstone first appeared between 590 and <br />600 feet. Drilling was stopped at 640 feet. The well began to <br />flow at 5 to 10 gallons per minute (gpm). <br />Geophysical logs were obtained for the entire 640 feet <br />Figure 3-4 displays the geophysical logs for Ide11 GF-1. <br />The first two attempts to install casing were unsuc- <br />cessful. Casing and tremie pipe sections were accidentally lost <br />down the hole on the first attempt. These sections could not <br />be fished out, and it Laas necessary to drill out the lost hard- <br />ware. On the second attempt to install casing, the casing jammed <br />in the hole. A 7-7/8 inch bit was then used to enlarge (ream) <br />•~ <br />3-9 <br />