Oil well pipe for a casing

Details Oil well pipe for a casing Oil well pipe for a casing

1994-08-29

1996-10-15

Bryant, III, James E.

Pipes and tubular conduits

Flexible

Distinct layers

138103, 138110, 138178, F16L 5700

Patent

active

055644139

ABSTRACT:
An oil well pipe for a casing, comprising an oil well body, a sliding layer formed on an outside surface of the oil well body and a protective layer formed on an outside surface of the sliding layer, the sliding layer contains an ethylene-vinyl acetate copolymer having 5 to 60 weight % vinyl acetate. The sliding layer may also contain a maleic acid modified polyethylene or the ethylene-vinyl acetate copolymer may be a maleic acid modified ethylene-vinyl acetate copolymer.

REFERENCES:
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patent: 4036539 (1977-07-01), Saunders et al.
patent: 4178949 (1979-12-01), Mazon
patent: 4335755 (1982-06-01), Sadler et al.
patent: 4483396 (1984-11-01), Kennelly
patent: 4585681 (1986-04-01), Kidera et al.
patent: 4796670 (1989-01-01), Russell et al.
patent: 4811785 (1989-03-01), Weber
patent: 4818148 (1989-04-01), Takeda et al.
Magdy Kamal, "Method permits bending polyurethane-coated pipe", Oil & Gas Journal, vol. 76, No. 36, Sep. 1978, Frankfurt, pp. 107-111.

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