Method and apparatus for effecting sealed connection to upstandi

Details Method and apparatus for effecting sealed connection to upstandi Method and apparatus for effecting sealed connection to upstandi

1981-05-01

1983-08-02

Purser, Ernest R.

Wells

Processes

Placing or shifting well part

166134, 285145, E21B 33129

Patent

active

043960669

ABSTRACT:
An improved apparatus and method are provided for effecting a sealed connection to an upstanding end of a tubular member in a subterranean well where the upstanding end of the tubular member is of irregular configuration at one end. A connecting housing is lowered by a tubing string over the upstanding end of the tubular member and is provided internally with an annular elastomeric seal element and two pairs of cooperating slip elements respectively disposed above and below the annular seal. The actuation of the slip elements to engage the housing with the tubular member is such that a predetermined amount of compression force can be applied to the annular seal to insure that the seal will resist the normal fluid pressures encountered in the well operation, but forces in excess of such predetermined limit are not applied to the seal by the manipulative movements of the reconnected tubing string. The apparatus may include scrapers for scraping the upstanding end of the tubular member to remove particulates adhering thereto prior to effecting the engagement of the annular seal and the various slip elements therewith.

REFERENCES:
patent: 2589506 (1952-03-01), Morrisett
patent: 2598340 (1952-05-01), Baker et al.
patent: 2823754 (1958-02-01), Ault
patent: 2929453 (1960-03-01), Conrad
patent: 3394762 (1968-07-01), Young

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