COUPLING APPARATUS FOR COILED TUBINGS OF DIFFERENT DIAMETERS, INSTALLING METHOD FOR COUPLING APPARATUS, AND INSTALLING METHOD FOR TUBINGS OF DIFFERENT DIAMETERS USING COUPLING APPARATUS

COUPLING APPARATUS FOR COILED TUBINGS OF DIFFERENT DIAMETERS, INSTALLING METHOD FOR COUPLING APPARATUS, AND INSTALLING METHOD FOR TUBINGS OF DIFFERENT DIAMETERS USING COUPLING APPARATUS

Disclosed is a coupling apparatus for coiled tubings of different diameters, an installing method for the coupling apparatus, and an installing method for tubings of different diameters. The coupling apparatus includes a bottom joint, a top joint, and a back cap, where a gapped slip sleeve is provid...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YANG, WENXIN, AIBAIBU, ABULIMITI, WANG, JIANLEI, WANG, YAJING, PANG, DEXIN, GUO, XINWEI, ZHAO, QIAN
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
JOINTS OR FITTINGS FOR PIPES
LIGHTING
MEANS FOR THERMAL INSULATION IN GENERAL
MECHANICAL ENGINEERING
PIPES
SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING
THERMAL INSULATION IN GENERAL
WEAPONS
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Beschreibung
Zusammenfassung:Disclosed is a coupling apparatus for coiled tubings of different diameters, an installing method for the coupling apparatus, and an installing method for tubings of different diameters. The coupling apparatus includes a bottom joint, a top joint, and a back cap, where a gapped slip sleeve is provided on a fitting ring groove on an outer side of an upper portion of the bottom joint, and the gapped slip sleeve is coupled with the bottom joint via a rotation preventing element capable of preventing radial rotation of the gapped slip sleeve. The coupling apparatus allows for easy installation and simple maintenance, and coupling coiled tubings of different diameters at the same wellhead with less difficulties, and provides enhanced resistance to tension and torque to avoid piercement and improve safety. The installing method includes retaining the top joint with a large diameter coiled tubing.