Swivel body for a top drive in a wellbore derrick

- Varco I/P, Inc.
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Description

FIG. 1 is a perspective view of a design for a swivel body according to the present invention.

FIG. 2 is a top view of the swivel body of FIG. 1.

FIG. 3 is a first side view of the swivel body of FIG. 1.

FIG. 4 is a bottom view of the swivel body of FIG. 1.

FIG. 5 is a second side view of the swivel body of FIG. 1, opposite the first side shown in FIG. 3.

FIG. 6 is a front view of the swivel body of FIG. 1; and,

FIG. 7 is a rear view of the swivel body of FIG. 1.

Claims

The ornamental design for a swivel body for a top drive in a wellbore derrick, as shown and described.

Referenced Cited
U.S. Patent Documents
4010600 March 8, 1977 Poole et al.
4115911 September 26, 1978 Poole et al.
4187920 February 12, 1980 Johnson
4205423 June 3, 1980 Poole et al.
4219087 August 26, 1980 Johnson
4421179 December 20, 1983 Boyadjieff
4449596 May 22, 1984 Boyadjieff
4458768 July 10, 1984 Boyadjieff
4529045 July 16, 1985 Boyadjieff et al.
4589503 May 20, 1986 Johnson et al.
4605077 August 12, 1986 Boyadjieff
4753300 June 28, 1988 Shaw et al.
4759239 July 26, 1988 Hamilton et al.
4793422 December 27, 1988 Krasnov
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5236035 August 17, 1993 Brisco et al.
5293933 March 15, 1994 Brisco
5950724 September 14, 1999 Giebeler
6276466 August 21, 2001 Boyd
6634423 October 21, 2003 Giebeler et al.
Other references
  • An Overview of Top-Drive Drilling Systems Applications and Experiences, G.I. Boyadjieff, IADC/SPE 14716, 8 pp. 1986.
  • Varco Pioneers AC Top Drive, Engineering Award Winners, AC Top Drive Technology Update #1, Hart's Petroleum Engineer, 4 pp., Apr. 1997.
  • Challenger Rig & Mfg., Inc., Doghouse, Composite Catalog 1982-83, p. 1984-C, 1982.
  • AC Top Drive Technology Update #2, Varco Systems, 1 p. Prior to 2002.
  • Top Drive Drilling System TD 500 PAC Variable Frequency AC Top Drive, National Oilwell, 6 pp., 2002.
  • 1000 Ton AC Top Drive—TDS—1000, Varco Systems, 2 pp., 2002.
  • 750 Ton DC Top Drive TDS—45, Varco Systems, 2 pp., 2002.
  • 500 Ton DC Top Drive IDS—1, Varco Systems, 2 pp., 2002.
  • Varco's Top Drive Systems are advancing the technology of drilling, Varco Systems, 8 pp., 2001.
Patent History
Patent number: D519136
Type: Grant
Filed: Jun 24, 2004
Date of Patent: Apr 18, 2006
Assignee: Varco I/P, Inc. (Houston, TX)
Inventors: Robert Alden Folk (Calgary), Steven Lorne Folk (Sherwood Park)
Primary Examiner: Antoine D. Davis
Attorney: Guy McClung
Application Number: 29/208,314
Classifications
Current U.S. Class: Tool Or Work Holder (D15/140)