초록

A connector for connecting a tube such as a coil tubing, or the like, to well tools, pipe, or another tube. The connector will withstand high pressures and is capable of transmitting high tensile and torque loads, and can be applied to tubes by crimping through use of conventional swaging devices.

대표청구항 ▼

A connector for connecting a tool or the like to one end of a coil tubing, the coil tubing having a bore therethrough defined by an inner wall, said connector comprising: (a) a tubular body having a bore extending longitudinally therethrough, said tubular body having means at one end thereof for att

A connector for connecting a tool or the like to one end of a coil tubing, the coil tubing having a bore therethrough defined by an inner wall, said connector comprising: (a) a tubular body having a bore extending longitudinally therethrough, said tubular body having means at one end thereof for attachment to said tool or the like and having its other end reduced in outside diameter to provide both a stem for insertion into the bore of said coil tubing and a stop shoulder for limiting the penetration of said stem thereinto, said stem being formed with friction means thereon in the form of a helical buttress-type thread for engaging and gripping the inner wall of said coil tubing, said stem being formed, with a plurality of longitudinally directed circumferentially spaced slots cutting gaps in said buttress-type thread, and annular groove means formed on said stem between said stop shoulder and said friction means; (b) resilient seal means carried in said annular groove means on said stem; and (c) a crimping sleeve disposable about said coil tubing and engageable with said stop shoulder of said stem and being crimpable to squeeze the wall of the coil tubing inwardly into gripping and sealing engagement with both said friction means and said resilient seal means.