中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.013 seconds)

    Method and apparatus for salvaging an oil well tubulars
    2.
    发明授权
    Method and apparatus for salvaging an oil well tubulars 有权

    公开(公告)号：US09963943B1

    公开(公告)日：2018-05-08

    申请号：US14795564

    申请日：2015-07-09

    Applicant: TETRA Technologies, Inc.

    Inventor： Ames Lafferty ,  John Hawkins ,  Tara Landry

    IPC: E21B19/00

    CPC classification number: E21B19/00 ,  E21B29/12

    Abstract: The present invention is directed to a method of salvaging an elongated oil well tubular that extends downwardly from an oil well platform as well as a saw apparatus of improved configuration. The method includes supporting the tubular in a generally upright or vertical position. A cutting apparatus is placed next to the tubular. The cutting apparatus includes a frame that supports a lifting device and a rotary cutter. The lifting device moves the rotary cutter from a first position to a second position that is higher than the first position. The second position is closer to the tubular than the first position. The rotary cutter can travel in an arcuate path when moving from the first position to the second position. The cutter moves along a selected path to cut the tubular. After cutting, the cut section is removed and the tubular then elevated so that an additional cut can be made. This procedure is repeated multiple times until the tubular has been salvaged, cut into many smaller pieces or sections.

Patent Agency Ranking