DOWNHOLE TUBULAR SEGMENT WITH EMBEDDED CONDUCTOR Russian patent published in 2016 - IPC E21B17/00 

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to manufacturing of pipes to be used for pipe columns with embedded conductor for usage in boreholes. The downhole tubular segment is suggested with the following components: the main tubular part with inner channel passing along the segment length and outer and inner surfaces formed by the inner channel, at that the above main tubular part is made of material fit for extrusion and capable to withstand ambient conditions in the borehole, and at least one extruded passage formed in the main tubular part along its length. At that at least this one extruded passage is contained partially inside the segment wall formed between outer and inner surface; it is shaped as a dovetail in its cross-section adapted to limit transversal shift of the conductor placed inside it. At that the dovetail shape is open to the segment wall surface and has width increasing towards its inner area so that at least one extruded passage provides due to its shape potential placement and retention of the conductor in situ in crosswise direction without any additional fastening mechanisms after placement of the conductor.

EFFECT: free passage of borehole facilities such as, for example, cable measuring tools or cementing equipment due to retained full cross-section of inner channels in tubular segments at maintenance of reliable fixture and protection of the conductor inside tubular segments.

9 cl, 6 dwg