FIELD: construction, pipeline.
SUBSTANCE: invention pertains to construction and may be used in oil and gas industry in laying or repairing of transfer pipelines under water obstacle. Pilot borehole is drilled, enlarged and pipeline string consisting of bent along the axis pipes is drawn through it. Pilot borehole is drilled along the radius of the bending deflection of the pipeline string. Inside the drawn pipeline string there is a duct supplying air in to the front end of the string. Pipeline string is drawn in two stages. At first, first part of the string is drawn reaching lowermost position in the bore hole and is balanced by filling pipeline string with water. Second part of the string is welded and continued to be drawn.
EFFECT: widened field of application.
2 dwg
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