Apparatus and method for connecting a tubing string to downhole

Details Apparatus and method for connecting a tubing string to downhole Apparatus and method for connecting a tubing string to downhole

1976-09-29

1978-01-10

Leppink, James A.

Wells

With below and above ground modification

Eduction pump or plunger in well

166189, 166313, 285137A, E21B 33035, E21B 33122

Patent

active

040673855

ABSTRACT:
Apparatus is disclosed for tieing at least one tubing string suspended in a well pipe from a subsea non-rotatable christmas tree located on the sea floor to a downhole hanger affixed to the well pipe. The tubing string has a tie-back tool arranged on its lower end which contains first orienting means. The hanger contains second orienting means which is engageable with the first orienting means to position the tie-back tool in a desired angular position. Means arranged on the tubing string permit the tie-back tool to rotate to such angular position without placing torsional load on the tubing string. The method in which the tubing string is tied to the hanger is also disclosed.

REFERENCES:
patent: 3012608 (1961-12-01), McLaren, Jr.
patent: 3324983 (1967-06-01), Price
patent: 3368699 (1968-02-01), Scaggs
patent: 3934648 (1976-01-01), Amancharla

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