Coiled tubing test stopper

The invention discloses a coiled tubing test stopper. The coiled tubing test stopper comprises a fishing head, movable seal modules and a locking module; the movable seal modules comprise sealing ballseats, sealing ball heads, limiting ball seat, connecting joints and movable seal assemblies; the up...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZU JIAN, YE CHUNBO, JIANG JUN, LIU HAIYING, ZHOU ZHAOCHUAN, QIU LICAN, WANG QING, LIU ZHILONG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a coiled tubing test stopper. The coiled tubing test stopper comprises a fishing head, movable seal modules and a locking module; the movable seal modules comprise sealing ballseats, sealing ball heads, limiting ball seat, connecting joints and movable seal assemblies; the upper ends of the sealing ball seats are connected with the fishing head, the lower ends of the sealing ball seats are connected with the limiting ball seats, the movable seal assemblies are arranged inside the upper ends of the sealing ball seats, inner spherical surfaces are arranged at the lower ends of the sealing ball seats, inner spherical surfaces and inclined surfaces are arranged on the lower parts of the inner walls of the limiting ball seats, and outer spherical surfaces are arranged at the lower ends of the limiting ball seats; the upper parts of the sealing ball heads are limited in the inner spherical surfaces formed by the sealing ball seats and the limiting ball seats, and thelower parts of the sealin