...Well-drilling Methods

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U.S. Government Printing Office, 1911 - Wells - 139 pages
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includes percussion drilling method, churn-drill method

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Page 115 - ... immediately after the drawing of the casing, shall drive a round, wooden plug into the well at the point just below where the lower end of the casing shall have rested, which plug shall be at least three feet in length, tapering in form, and to be of the same diameter at the distance...
Page 116 - The casing from the well shall then be pulled or withdrawn therefrom, and immediately thereafter a cast iron ball, eight inches in diameter shall be dropped in the well and securely rammed into the shale by the driller or owner of the well, after which not less than one cubic yard of sand pumping or drilling taken from the well shall be put on top of said iron ball.
Page 115 - ... feet in length, equal in diameter to the diameter of the well below the casing, to a point at least five feet below the bottom of the casing...
Page 116 - ... or cease to be operated for utilizing the flow of gas or oil therefrom, it shall be the duty of any person, firm or corporation having the custody or control of such well at the time of such abandonment...
Page 90 - If the clay is very dry a little water is added, and with the very sticky Cretaceous clay this process can be continued until the whole length of the auger Is filled with a cylinder of mud. This 15 feet of mud represents about 10 feet In depth. Usually, however, the auger is filled for only about 10 feet, representing 7 feet of depth, before lifting the tools. When rock is encountered, a bar drill Is used. This is sometimes attached directly to the wooden poles and sometimes to iron poles. * * *...
Page 117 - ... a civil action in any court of competent jurisdiction in this State against the owner, lessee, agent or manager of said well, and each of them jointly and severally to recover the cost and expense of such tubing and packing, together with attorney's fees and costs of suit.
Page 122 - Now, if both bear a water-level equally high, the test will be fairly made, and the result will indicate their combined capacity; or, if both heads are at least as high, as the surface at the well, the test may be accepted. But suppose that the bed A has been cut into by erosion, or been reached by crevices, or is otherwise defective, while the other, B, remains intact and bears an elevated fountain head. Under these conditions, the water may flow from B, through the bore into A, and escape laterally...
Page 116 - shot" there shall be placed in the bottom of the hole thereof a plug of well-seasoned pine wood, the diameter of which shall be within one-half inch as great as the hole of such well, to extend at least three feet above the salt water level, where salt water has been struck, such plug shall extend at least three feet from the bottom of the well. In both cases such wooden plugs shall be thoroughly rammed down and made tight by the use of drilling tools.
Page 115 - ... rock and before drawing the casing, fill up the well with sand or rock sediment to the depth of at least twenty feet above the...
Page 116 - ... inch as great as the hole of such well, to extend at least three feet above the salt water level, where salt water has been struck; where no salt water has been struck, such plug shall extend at least three feet from the bottom of the well. In both cases such wooden plugs shall be thoroughly rammed down and made tight by the use of drilling tools. After such ramming and tightening the hole of such well shall...

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