E/MJ : engineering and mining journal . he collarof the well consist of a casing-head T through which thetubing passes, and a nipple, with relief valve on the sideoutlet of the casing-head T (Fig. 6). The line of tubingshould have a valve between the casing head and theslime pump, and a wooden plug is placed in the end ofthe tubing before lowering in the well. This plug willkeep the tubing clear, and when the slime is pumped August 16, 1919 ENGINKBRING AND MINING JOURNAL 271 will be blown out. A metal check valve could be used,but it may fail to function and has no advantage overa wooden plug.
E/MJ : engineering and mining journal . he collarof the well consist of a casing-head T through which thetubing passes, and a nipple, with relief valve on the sideoutlet of the casing-head T (Fig. 6). The line of tubingshould have a valve between the casing head and theslime pump, and a wooden plug is placed in the end ofthe tubing before lowering in the well. This plug willkeep the tubing clear, and when the slime is pumped August 16, 1919 ENGINKBRING AND MINING JOURNAL 271 will be blown out. A metal check valve could be used,but it may fail to function and has no advantage overa wooden plug. When the tubing is in, the slime pump is started withthe relief valve open. The relief valve must not beclosed, because the gas pressure would blow the tubingout of the casing-head T. After the slime-laden fluidhas been pumped into the hole, it will begin to be blownout of the relief valve, and, at this time, the valve shouldbe used as a throttle to prevent all of the slimes beingejected and to maintain enough pressure to force a por-.
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
