FIELD: oil-and-gas industry.
SUBSTANCE: flexible tube is to be used in development of oil and gas deposit at sea bottom (in open sea). Said pipe comprises at least one layer 1 composed by 70-91 wt % of at least one polycrystalline polyamide, preferably 5-25 wt %, more preferably 8-15 wt %, and all the more preferably 8-12 wt % of elastomer ethylene copolymer including epoxy, antihydride or acidic functional group introduced by grafting or copolymerisation, and 5-13 wt % of plasticiser. Besides, said pipe comprises second layer 2 consisting of one or several metal elements. Note here that second layer stays in contact with transferred oil or gas. Note here that said first layer 1 surrounds second layer 2 to ensure tightness.
EFFECT: higher resistance to ageing, lower labor input.
6 cl, 1 dwg
