Tubular injector with snubbing jack and oscillator
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United States of America Patent
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Jul 2, 2002
Grant Date -
N/A
app pub date -
Dec 20, 2000
filing date -
Jun 22, 1998
priority date (Note) -
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Abstract
A tubular injector with snubbing jack and oscillator, which eliminates the need for overhead tubular and oscillator support structure and utilizes resonant vibration to remove tubulars (2) and other objects which are stuck in a well. In a first embodiment the apparatus includes a mechanical oscillator (22) mounted on a snubbing jack (30), wherein the tubular load on the snubbing jack (30) can be released and transferred to the oscillator (22) when the tubular (2) is stuck, for vibrating and loosening the tubular (2) in the well. In another embodiment the apparatus is designed to handle coiled tubing (6) and a snubbing-type jack (39) is used in association with a conventional coiled tubing guide (37) and a coiled tubing injector (14), for guiding the coiled tubing (6) from a reel through the guide (37) and through a hollow tubular stem (9) in the oscillating apparatus (22), into the injector (14) and the well.
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