Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1973-12-17
1976-03-23
Abbott, Frank L.
Metal working
Method of mechanical manufacture
Assembling or joining
52741, 52120, 52121, 52123, E04G 2100, E04G 2306, B21D 3903, B23P 1100
Patent
active
039451070
ABSTRACT:
This disclosure describes a drilling mast system which is adapted to be assembled section by section in a vertical position, as distinguished from the conventional method of raising a drilling mast by assemblying the mast in a horizontal position on the ground and then lifting the mast into a vertical position. The mast is made of a base section and a plurality of upper sections, each one adapted to be mounted on top of the one below it and fastened thereto. After the base section has been assembled on the foundation, the succeeding sections are assembled on the ground or are lifted in pieces and assembled in place on top of the previous section by means of a floating gin pole. The gin pole is supported inside of the mast by means of a plurality of basket cables.
The sections of the mast are made of rectangular horizontal cross section. The floating gin pole extends above the top of the topmost assembled section, and can tilt to the outside of the mast, so as to lift section parts outside the mast. After the top of the mast is completed a jib boom, or auxiliary support and block means, is mounted on the top section and used as a means to lower the floating gin pole to the ground. The auxiliary support means is then used to assemble the crown block on top of the mast. The jib boom is mounted on the top section and used as a means to lower the floating gin pole to the ground. The auxiliary support means is then used to assemble the crown block on top of the mast. The jib boom stays in place during the drilling operation and is used to lift the gin pole back into position when the mast is to be disassembled.
REFERENCES:
patent: 1360131 (1920-11-01), Miller
patent: 1375092 (1921-04-01), Hansen
patent: 1539109 (1925-05-01), Bramdt
patent: 1605472 (1926-11-01), Schick
patent: 1644499 (1927-10-01), Trout
patent: 2299383 (1942-10-01), Crow
patent: 2720694 (1955-10-01), Hines
patent: 2857026 (1958-10-01), Jones
patent: 3672115 (1972-06-01), Abe et al.
Abbott Frank L.
Parker Drilling Company
Ridgill, Jr. James L.
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