FIELD: process engineering.
SUBSTANCE: invention relates to winding shells of composite material on casing with precut opening to be fitted in flow string of multihole wells. Proposed mandrel comprises forming surface shaped to tube opening and connected with two or more bearing rod mechanisms. Said forming surface may be fitted and locked in tube opening while bearing rod mechanisms may be fitted against the stop in tune wall opposite said opening. Note here that rod mechanisms are connected with said forming surface to deflect from perpendicular in one direction only while bearing rod may be locked relative to tube axis with surface and rod in operating position.
EFFECT: shell of composite material with precut opening.
6 dwg
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