Buoyant tubulars and method for installing same in a well bore

Details Buoyant tubulars and method for installing same in a well bore Buoyant tubulars and method for installing same in a well bore

1979-08-15

1982-01-05

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166242, E21B 1700, E21B 1900

Patent

active

043089178

ABSTRACT:
The invention deals with running and pulling lines and tubulars in a liquid-containing well without use of heavy hoisting equipment. Sections of tubulars somewhat more dense than the well liquid are combined with less dense sections to make up a string which is essentially neutrally buoyant in the liquid. Sections of intermediate density may be included also. Examples of suitable plastic materials are given.

REFERENCES:
patent: 3055424 (1962-09-01), Allen
patent: 3206537 (1965-09-01), Steward
patent: 3502150 (1970-03-01), Dunlap
patent: 3999617 (1976-12-01), Ilfrey et al.
patent: 4024913 (1977-05-01), Grable
patent: 4046194 (1977-09-01), Cloud
patent: 4082144 (1978-04-01), Marquis
patent: 4086971 (1978-05-01), Hall et al.

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