Various / 2008-11-22 00:00:00

The cost of
drilling is about L1,000, and the mode of procedure is as follows: A
derrick being first erected, a 6 inch wrought-iron pipe is driven down
through the soft earth till rock is reached from 75 to 100 feet. Large
drills, weighing from 3,000 to 4,000 lb., are now brought into use; these
rise and fall with a stroke of 4 to 5 feet. The fuel to run these drills
is conveyed by small pipes from adjoining wells. An 8-inch hole having
been bored to a depth of about 500 feet, a 5-5/8 inch wrought-iron pipe
is put down to shut off the water. The hole is then continued 6 inches in
diameter until gas is struck, when a 4-inch pipe is put down. From forty
to sixty days are consumed in sinking the well and striking gas. The
largest well known is estimated to yield about 30,000,000 cubic feet of
gas in twenty-four hours, but half of this may be considered as the
product of a good well. The pressure of gas as it issues from the mouth
of the well is nearly or quite 200 lb. per square inch. One of the gauges
which I examined showed a pressure of 187 lb.
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