U.S. patent number D524,833 [Application Number D/207,008] was granted by the patent office on 2006-07-11 for access platform for a well top drive system. This patent grant is currently assigned to Varco I/P, Inc.. Invention is credited to Robert Alden Folk, Steven Lorne Folk.
United States Patent | D524,833 |
Folk , et al. | July 11, 2006 |
Inventors: | Folk; Robert Alden (Calgary, CA), Folk; Steven Lorne (Sherwood Park, CA) |
---|---|
Assignee: | Varco I/P, Inc. (Houston,
TX) |
Appl. No.: | D/207,008 |
Filed: | June 7, 2004 |
Current U.S. Class: | D15/199 |
Current International Class: | 1599 |
Field of Search: | ;D15/199 ;166/78.1,77.52,378-380,385,387 ;175/85,203 ;405/259.3,259.6 |
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An Overview of Top-Drive Drilling Systems Applications and Experiences, G.I. Boyadjieff, 1ADC/SPE 14716. 8 pp. 1986. cited by other . Varco Pioneers AC Top Drive, Engineering Award Winners, AC Top Drive Technology Update #1, Hart's Petroleum Engineer, 4 pp., Apr. 1997. cited by other . Challenger Rig & Mfg., Inc., Doghouse. Composite Catalog 1982-83, p. 1984-C, 1982. cited by other . AC Top Drive Technology Update #2, Varco Systems, 1 p. Prior to 2002. cited by other . Top Drive Drilling System TD 500 PAC Variable Frequency AC Top Drive. National Oilwell, 6 pp., 2002. cited by other . 1000 Ton AC Top Drive--TDS--1000. Varco Systems, 2 pp., 2002. cited by other . 750 Ton DC Top Drive TDS--45, Varco Systems, 2 pp., 2002. cited by other . 500 Ton DC Top Drive IDS--1, Varco Systems, 2 pp., 2002. cited by other . Varco's Top Drive Systems are advancing the technology of drilling. Varco Systems, 8 pp., 2001. cited by other. |
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