FIELD: electricity.
SUBSTANCE: invention is related to flexible drill string for transfer of liquid mediums and electric energy between sea surface and equipment located on sea bottom. Suggested flexible drill string comprises a row of pipes for transfer of liquid mediums, electric conductors assembled in bundle, filling material located at least partially around specified pipes and conductors between them, and external protective shell. Besides flexible drill string includes separate weight-bearing elements, which are light rods made of composite material, in particular light rods may be coal rods including inbuilt strengthening fibers, which may be either assembled in bundles or be located individually or in combination of both.
EFFECT: higher strength of flexible drill string bearing capacity.
10 cl, 9 dwg
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